Merge pull request #112 from hrfee/matrix

Matrix Integration

api.go

@@ -354,6 +354,34 @@ func (app *appContext) newUser(req newUserDTO, confirmed bool) (f errorFunc, suc
 			}
 		}
 	}
+	var matrixUser MatrixUser
+	matrixVerified := false
+	if matrixEnabled {
+		if req.MatrixPIN == "" {
+			if app.config.Section("matrix").Key("required").MustBool(false) {
+				f = func(gc *gin.Context) {
+					app.debug.Printf("%s: New user failed: Matrix verification not completed", req.Code)
+					respond(401, "errorMatrixVerification", gc)
+				}
+				success = false
+				return
+			}
+		} else {
+			user, ok := app.matrix.tokens[req.MatrixPIN]
+			if !ok || !user.Verified {
+				matrixVerified = false
+				f = func(gc *gin.Context) {
+					app.debug.Printf("%s: New user failed: Matrix PIN was invalid", req.Code)
+					respond(401, "errorInvalidPIN", gc)
+				}
+				success = false
+				return
+			}
+			matrixVerified = user.Verified
+			matrixUser = *user.User
+
+		}
+	}
 	telegramTokenIndex := -1
 	if telegramEnabled {
 		if req.TelegramPIN == "" {
@@ -536,7 +564,17 @@ func (app *appContext) newUser(req newUserDTO, confirmed bool) (f errorFunc, suc
 			app.telegram.verifiedTokens = app.telegram.verifiedTokens[:len(app.telegram.verifiedTokens)-1]
 		}
 	}
-
+	if matrixVerified {
+		matrixUser.Contact = req.MatrixContact
+		delete(app.matrix.tokens, req.MatrixPIN)
+		if app.storage.matrix == nil {
+			app.storage.matrix = map[string]MatrixUser{}
+		}
+		app.storage.matrix[user.ID] = matrixUser
+		if err := app.storage.storeMatrixUsers(); err != nil {
+			app.err.Printf("Failed to store Matrix users: %v", err)
+		}
+	}
 	if (emailEnabled && app.config.Section("welcome_email").Key("enabled").MustBool(false) && req.Email != "") || telegramTokenIndex != -1 || discordVerified {
 		name := app.getAddressOrName(user.ID)
 		app.debug.Printf("%s: Sending welcome message to %s", req.Username, name)
@@ -1239,10 +1277,14 @@ func (app *appContext) GetUsers(gc *gin.Context) {
 			user.Telegram = tgUser.Username
 			user.NotifyThroughTelegram = tgUser.Contact
 		}
-		if dc, ok := app.storage.discord[jfUser.ID]; ok {
+		if mxUser, ok := app.storage.matrix[jfUser.ID]; ok {
-			user.Discord = dc.Username + "#" + dc.Discriminator
+			user.Matrix = mxUser.UserID
-			user.DiscordID = dc.ID
+			user.NotifyThroughMatrix = mxUser.Contact
-			user.NotifyThroughDiscord = dc.Contact
+		}
+		if dcUser, ok := app.storage.discord[jfUser.ID]; ok {
+			user.Discord = dcUser.Username + "#" + dcUser.Discriminator
+			user.DiscordID = dcUser.ID
+			user.NotifyThroughDiscord = dcUser.Contact
 		}
 		resp.UserList[i] = user
 		i++
@@ -1498,6 +1540,8 @@ func (app *appContext) GetConfig(gc *gin.Context) {
 	resp.Sections["email"].Settings["language"] = el
 	resp.Sections["password_resets"].Settings["language"] = pl
 	resp.Sections["telegram"].Settings["language"] = tl
+	resp.Sections["discord"].Settings["language"] = tl
+	resp.Sections["matrix"].Settings["language"] = tl
 
 	gc.JSON(200, resp)
 }
@@ -1506,6 +1550,7 @@ func (app *appContext) GetConfig(gc *gin.Context) {
 // @Produce json
 // @Param appConfig body configDTO true "Config split into sections as in config.ini, all values as strings."
 // @Success 200 {object} boolResponse
+// @Failure 500 {object} boolResponse
 // @Router /config [post]
 // @Security Bearer
 // @tags Configuration
@@ -1531,7 +1576,11 @@ func (app *appContext) ModifyConfig(gc *gin.Context) {
 			}
 		}
 	}
-	tempConfig.SaveTo(app.configPath)
+	if err := tempConfig.SaveTo(app.configPath); err != nil {
+		app.err.Printf("Failed to save config to \"%s\": %v", app.configPath, err)
+		respondBool(500, false, gc)
+		return
+	}
 	app.debug.Println("Config saved")
 	gc.JSON(200, map[string]bool{"success": true})
 	if req["restart-program"] != nil && req["restart-program"].(bool) {
@@ -2089,6 +2138,7 @@ func (app *appContext) SetContactMethods(gc *gin.Context) {
 		return
 	}
 	if tgUser, ok := app.storage.telegram[req.ID]; ok {
+		change := tgUser.Contact != req.Telegram
 		tgUser.Contact = req.Telegram
 		app.storage.telegram[req.ID] = tgUser
 		if err := app.storage.storeTelegramUsers(); err != nil {
@@ -2096,13 +2146,16 @@ func (app *appContext) SetContactMethods(gc *gin.Context) {
 			app.err.Printf("Telegram: Failed to store users: %v", err)
 			return
 		}
-		msg := ""
+		if change {
-		if !req.Telegram {
+			msg := ""
-			msg = " not"
+			if !req.Telegram {
+				msg = " not"
+			}
+			app.debug.Printf("Telegram: User \"%s\" will%s be notified through Telegram.", tgUser.Username, msg)
 		}
-		app.debug.Printf("Telegram: User \"%s\" will%s be notified through Telegram.", tgUser.Username, msg)
 	}
 	if dcUser, ok := app.storage.discord[req.ID]; ok {
+		change := dcUser.Contact != req.Discord
 		dcUser.Contact = req.Discord
 		app.storage.discord[req.ID] = dcUser
 		if err := app.storage.storeDiscordUsers(); err != nil {
@@ -2110,13 +2163,33 @@ func (app *appContext) SetContactMethods(gc *gin.Context) {
 			app.err.Printf("Discord: Failed to store users: %v", err)
 			return
 		}
-		msg := ""
+		if change {
-		if !req.Discord {
+			msg := ""
-			msg = " not"
+			if !req.Discord {
+				msg = " not"
+			}
+			app.debug.Printf("Discord: User \"%s\" will%s be notified through Discord.", dcUser.Username, msg)
+		}
+	}
+	if mxUser, ok := app.storage.matrix[req.ID]; ok {
+		change := mxUser.Contact != req.Matrix
+		mxUser.Contact = req.Matrix
+		app.storage.matrix[req.ID] = mxUser
+		if err := app.storage.storeMatrixUsers(); err != nil {
+			respondBool(500, false, gc)
+			app.err.Printf("Matrix: Failed to store users: %v", err)
+			return
+		}
+		if change {
+			msg := ""
+			if !req.Matrix {
+				msg = " not"
+			}
+			app.debug.Printf("Matrix: User \"%s\" will%s be notified through Matrix.", mxUser.UserID, msg)
 		}
-		app.debug.Printf("Discord: User \"%s\" will%s be notified through Discord.", dcUser.Username, msg)
 	}
 	if email, ok := app.storage.emails[req.ID]; ok {
+		change := email.Contact != req.Email
 		email.Contact = req.Email
 		app.storage.emails[req.ID] = email
 		if err := app.storage.storeEmails(); err != nil {
@@ -2124,11 +2197,13 @@ func (app *appContext) SetContactMethods(gc *gin.Context) {
 			app.err.Printf("Failed to store emails: %v", err)
 			return
 		}
-		msg := ""
+		if change {
-		if !req.Email {
+			msg := ""
-			msg = " not"
+			if !req.Email {
+				msg = " not"
+			}
+			app.debug.Printf("\"%s\" will%s be notified via Email.", email.Addr, msg)
 		}
-		app.debug.Printf("\"%s\" will%s be notified via Email.", email.Addr, msg)
 	}
 	respondBool(200, true, gc)
 }
@@ -2233,6 +2308,140 @@ func (app *appContext) DiscordServerInvite(gc *gin.Context) {
 	gc.JSON(200, DiscordInviteDTO{invURL, iconURL})
 }
 
+// @Summary Generate and send a new PIN to a specified Matrix user.
+// @Produce json
+// @Success 200 {object} boolResponse
+// @Failure 400 {object} boolResponse
+// @Failure 401 {object} boolResponse
+// @Failure 500 {object} boolResponse
+// @Param invCode path string true "invite Code"
+// @Param MatrixSendPINDTO body MatrixSendPINDTO true "User's Matrix ID."
+// @Router /invite/{invCode}/matrix/user [post]
+// @tags Other
+func (app *appContext) MatrixSendPIN(gc *gin.Context) {
+	code := gc.Param("invCode")
+	if _, ok := app.storage.invites[code]; !ok {
+		respondBool(401, false, gc)
+		return
+	}
+	var req MatrixSendPINDTO
+	gc.BindJSON(&req)
+	if req.UserID == "" {
+		respondBool(400, false, gc)
+		return
+	}
+	ok := app.matrix.SendStart(req.UserID)
+	if !ok {
+		respondBool(500, false, gc)
+		return
+	}
+	respondBool(200, true, gc)
+}
+
+// @Summary Check whether a matrix PIN is valid, and mark the token as verified if so. Requires invite code.
+// @Produce json
+// @Success 200 {object} boolResponse
+// @Failure 401 {object} boolResponse
+// @Param pin path string true "PIN code to check"
+// @Param invCode path string true "invite Code"
+// @Param userID path string true "Matrix User ID"
+// @Router /invite/{invCode}/matrix/verified/{userID}/{pin} [get]
+// @tags Other
+func (app *appContext) MatrixCheckPIN(gc *gin.Context) {
+	code := gc.Param("invCode")
+	if _, ok := app.storage.invites[code]; !ok {
+		app.debug.Println("Matrix: Invite code was invalid")
+		respondBool(401, false, gc)
+		return
+	}
+	userID := gc.Param("userID")
+	pin := gc.Param("pin")
+	user, ok := app.matrix.tokens[pin]
+	if !ok {
+		app.debug.Println("Matrix: PIN not found")
+		respondBool(200, false, gc)
+		return
+	}
+	if user.User.UserID != userID {
+		app.debug.Println("Matrix: User ID of PIN didn't match")
+		respondBool(200, false, gc)
+		return
+	}
+	user.Verified = true
+	app.matrix.tokens[pin] = user
+	respondBool(200, true, gc)
+}
+
+// @Summary Generates a Matrix access token from a username and password.
+// @Produce json
+// @Success 200 {object} boolResponse
+// @Failure 400 {object} stringResponse
+// @Failure 401 {object} boolResponse
+// @Failure 500 {object} boolResponse
+// @Param MatrixLoginDTO body MatrixLoginDTO true "Username & password."
+// @Router /matrix/login [post]
+// @tags Other
+func (app *appContext) MatrixLogin(gc *gin.Context) {
+	var req MatrixLoginDTO
+	gc.BindJSON(&req)
+	if req.Username == "" || req.Password == "" {
+		respond(400, "errorLoginBlank", gc)
+		return
+	}
+	token, err := app.matrix.generateAccessToken(req.Homeserver, req.Username, req.Password)
+	if err != nil {
+		app.err.Printf("Matrix: Failed to generate token: %v", err)
+		respond(401, "Unauthorized", gc)
+		return
+	}
+	tempConfig, _ := ini.Load(app.configPath)
+	matrix := tempConfig.Section("matrix")
+	matrix.Key("enabled").SetValue("true")
+	matrix.Key("homeserver").SetValue(req.Homeserver)
+	matrix.Key("token").SetValue(token)
+	matrix.Key("user_id").SetValue(req.Username)
+	if err := tempConfig.SaveTo(app.configPath); err != nil {
+		app.err.Printf("Failed to save config to \"%s\": %v", app.configPath, err)
+		respondBool(500, false, gc)
+		return
+	}
+	respondBool(200, true, gc)
+}
+
+// @Summary Links a Matrix user to a Jellyfin account via user IDs. Notifications are turned on by default.
+// @Produce json
+// @Success 200 {object} boolResponse
+// @Failure 400 {object} boolResponse
+// @Failure 500 {object} boolResponse
+// @Param MatrixConnectUserDTO body MatrixConnectUserDTO true "User's Jellyfin ID & Matrix user ID."
+// @Router /users/matrix [post]
+// @tags Other
+func (app *appContext) MatrixConnect(gc *gin.Context) {
+	var req MatrixConnectUserDTO
+	gc.BindJSON(&req)
+	if app.storage.matrix == nil {
+		app.storage.matrix = map[string]MatrixUser{}
+	}
+	roomID, err := app.matrix.CreateRoom(req.UserID)
+	if err != nil {
+		app.err.Printf("Matrix: Failed to create room: %v", err)
+		respondBool(500, false, gc)
+		return
+	}
+	app.storage.matrix[req.JellyfinID] = MatrixUser{
+		UserID:  req.UserID,
+		RoomID:  roomID,
+		Lang:    "en-us",
+		Contact: true,
+	}
+	if err := app.storage.storeMatrixUsers(); err != nil {
+		app.err.Printf("Failed to store Matrix users: %v", err)
+		respondBool(500, false, gc)
+		return
+	}
+	respondBool(200, true, gc)
+}
+
 // @Summary Returns a list of matching users from a Discord guild, given a username (discriminator optional).
 // @Produce json
 // @Success 200 {object} DiscordUsersDTO

config.go

@@ -15,6 +15,7 @@ var emailEnabled = false
 var messagesEnabled = false
 var telegramEnabled = false
 var discordEnabled = false
+var matrixEnabled = false
 
 func (app *appContext) GetPath(sect, key string) (fs.FS, string) {
 	val := app.config.Section(sect).Key(key).MustString("")
@@ -43,7 +44,7 @@ func (app *appContext) loadConfig() error {
 			key.SetValue(key.MustString(filepath.Join(app.dataPath, (key.Name() + ".json"))))
 		}
 	}
-	for _, key := range []string{"user_configuration", "user_displayprefs", "user_profiles", "ombi_template", "invites", "emails", "user_template", "custom_emails", "users", "telegram_users", "discord_users"} {
+	for _, key := range []string{"user_configuration", "user_displayprefs", "user_profiles", "ombi_template", "invites", "emails", "user_template", "custom_emails", "users", "telegram_users", "discord_users", "matrix_users"} {
 		app.config.Section("files").Key(key).SetValue(app.config.Section("files").Key(key).MustString(filepath.Join(app.dataPath, (key + ".json"))))
 	}
 	app.URLBase = strings.TrimSuffix(app.config.Section("ui").Key("url_base").MustString(""), "/")
@@ -83,22 +84,26 @@ func (app *appContext) loadConfig() error {
 	app.MustSetValue("user_expiry", "email_html", "jfa-go:"+"user-expired.html")
 	app.MustSetValue("user_expiry", "email_text", "jfa-go:"+"user-expired.txt")
 
+	app.MustSetValue("matrix", "topic", "Jellyfin notifications")
+
 	app.config.Section("jellyfin").Key("version").SetValue(version)
 	app.config.Section("jellyfin").Key("device").SetValue("jfa-go")
 	app.config.Section("jellyfin").Key("device_id").SetValue(fmt.Sprintf("jfa-go-%s-%s", version, commit))
 	messagesEnabled = app.config.Section("messages").Key("enabled").MustBool(false)
 	telegramEnabled = app.config.Section("telegram").Key("enabled").MustBool(false)
 	discordEnabled = app.config.Section("discord").Key("enabled").MustBool(false)
+	matrixEnabled = app.config.Section("matrix").Key("enabled").MustBool(false)
 	if !messagesEnabled {
 		emailEnabled = false
 		telegramEnabled = false
 		discordEnabled = false
+		matrixEnabled = false
 	} else if app.config.Section("email").Key("method").MustString("") == "" {
 		emailEnabled = false
 	} else {
 		emailEnabled = true
 	}
-	if !emailEnabled && !telegramEnabled && !discordEnabled {
+	if !emailEnabled && !telegramEnabled && !discordEnabled && !matrixEnabled {
 		messagesEnabled = false
 	}
 

config/config-base.json

@@ -568,7 +568,7 @@
                     "depends_true": "enabled",
                     "type": "bool",
                     "value": false,
-                    "description": "Require Discord connection on sign-up."
+                    "description": "Require Discord connection on sign-up. See the jfa-go wiki for info on setting this up."
                 },
                 "token": {
                     "name": "API Token",
@@ -633,7 +633,7 @@
             "order": [],
             "meta": {
                 "name": "Telegram",
-                "description": "Settings for Telegram signup/notifications"
+                "description": "Settings for Telegram signup/notifications. See the jfa-go wiki for info on setting this up."
             },
             "settings": {
                 "enabled": {
@@ -676,6 +676,80 @@
                 }
             }
         },
+        "matrix": {
+            "order": [],
+            "meta": {
+                "name": "Matrix",
+                "description": "Settings for Matrix invites/signup/notifications. See the jfa-go wiki for info on setting this up."
+            },
+            "settings": {
+                "enabled": {
+                    "name": "Enabled",
+                    "required": false,
+                    "requires_restart": true,
+                    "type": "bool",
+                    "value": false,
+                    "description": "Enable signup verification through Matrix and the sending of notifications through it.\nSee the jfa-go wiki for setting up a bot."
+                },
+                "required": {
+                    "name": "Require on sign-up",
+                    "required": false,
+                    "required_restart": true,
+                    "depends_true": "enabled",
+                    "type": "bool",
+                    "value": false,
+                    "description": "Require Matrix connection on sign-up."
+                },
+                "homeserver": {
+                    "name": "Home Server URL",
+                    "required": false,
+                    "requires_restart": true,
+                    "depends_true": "enabled",
+                    "type": "text",
+                    "value": "",
+                    "description": "Matrix Home server URL."
+                },
+                "token": {
+                    "name": "Access Token",
+                    "required": false,
+                    "requires_restart": true,
+                    "depends_true": "enabled",
+                    "type": "text",
+                    "value": "",
+                    "description": "Matrix Bot API Token."
+                },
+                "user_id": {
+                    "name": "Bot User ID",
+                    "required": false,
+                    "requires_restart": true,
+                    "depends_true": "enabled",
+                    "type": "text",
+                    "value": "",
+                    "description": "User ID of bot account (Example: @jfa-bot:riot.im)"
+                },
+                "topic": {
+                    "name": "Chat topic",
+                    "required": false,
+                    "requires_restart": true,
+                    "depends_true": "enabled",
+                    "type": "text",
+                    "value": "Jellyfin notifications",
+                    "description": "Topic of Matrix private chats."
+                },
+                "language": {
+                    "name": "Language",
+                    "required": false,
+                    "requires_restart": false,
+                    "depends_true": "enabled",
+                    "type": "select",
+                    "options": [
+                        ["en-us", "English (US)"]
+                    ],
+                    "value": "en-us",
+                    "description": "Default Matrix message language. Visit weblate if you'd like to translate."
+                }
+            }
+        },
         "password_resets": {
             "order": [],
             "meta": {
@@ -1225,6 +1299,14 @@
                     "value": "",
                     "description": "Stores telegram user IDs and language preferences."
                 },
+                "matrix_users": {
+                    "name": "Matrix users",
+                    "required": false,
+                    "requires_restart": false,
+                    "type": "text",
+                    "value": "",
+                    "description": "Stores matrix user IDs and language preferences."
+                },
                 "discord_users": {
                     "name": "Discord users",
                     "required": false,

email.go

@@ -25,6 +25,8 @@ import (
 	"github.com/mailgun/mailgun-go/v4"
 )
 
+var renderer = html.NewRenderer(html.RendererOptions{Flags: html.Smartypants})
+
 // implements email sending, right now via smtp or mailgun.
 type EmailClient interface {
 	Send(fromName, fromAddr string, message *Message, address ...string) error
@@ -337,7 +339,6 @@ func (emailer *Emailer) constructConfirmation(code, username, key string, app *a
 
 func (emailer *Emailer) constructTemplate(subject, md string, app *appContext) (*Message, error) {
 	email := &Message{Subject: subject}
-	renderer := html.NewRenderer(html.RendererOptions{Flags: html.Smartypants})
 	html := markdown.ToHTML([]byte(md), nil, renderer)
 	text := stripMarkdown(md)
 	message := app.config.Section("messages").Key("message").String()
@@ -817,6 +818,12 @@ func (app *appContext) sendByID(email *Message, ID ...string) error {
 				return err
 			}
 		}
+		if mxChat, ok := app.storage.matrix[id]; ok && mxChat.Contact && matrixEnabled {
+			err = app.matrix.Send(email, mxChat.RoomID)
+			if err != nil {
+				return err
+			}
+		}
 		if address, ok := app.storage.emails[id]; ok && address.Contact && emailEnabled {
 			err = app.email.send(email, address.Addr)
 			if err != nil {

go.mod

@@ -38,6 +38,7 @@ require (
 	github.com/lithammer/shortuuid/v3 v3.0.4
 	github.com/mailgun/mailgun-go/v4 v4.5.1
 	github.com/mailru/easyjson v0.7.7 // indirect
+	github.com/matrix-org/gomatrix v0.0.0-20210324163249-be2af5ef2e16 // indirect
 	github.com/russross/blackfriday/v2 v2.1.0 // indirect
 	github.com/skratchdot/open-golang v0.0.0-20200116055534-eef842397966 // indirect
 	github.com/smartystreets/goconvey v1.6.4 // indirect

go.sum

@@ -189,6 +189,8 @@ github.com/mailru/easyjson v0.0.0-20190626092158-b2ccc519800e/go.mod h1:C1wdFJiN
 github.com/mailru/easyjson v0.7.6/go.mod h1:xzfreul335JAWq5oZzymOObrkdz5UnU4kGfJJLY9Nlc=
 github.com/mailru/easyjson v0.7.7 h1:UGYAvKxe3sBsEDzO8ZeWOSlIQfWFlxbzLZe7hwFURr0=
 github.com/mailru/easyjson v0.7.7/go.mod h1:xzfreul335JAWq5oZzymOObrkdz5UnU4kGfJJLY9Nlc=
+github.com/matrix-org/gomatrix v0.0.0-20210324163249-be2af5ef2e16 h1:ZtO5uywdd5dLDCud4r0r55eP4j9FuUNpl60Gmntcop4=
+github.com/matrix-org/gomatrix v0.0.0-20210324163249-be2af5ef2e16/go.mod h1:/gBX06Kw0exX1HrwmoBibFA98yBk/jxKpGVeyQbff+s=
 github.com/mattn/go-colorable v0.1.8 h1:c1ghPdyEDarC70ftn0y+A/Ee++9zz8ljHG1b13eJ0s8=
 github.com/mattn/go-colorable v0.1.8/go.mod h1:u6P/XSegPjTcexA+o6vUJrdnUu04hMope9wVRipJSqc=
 github.com/mattn/go-isatty v0.0.4/go.mod h1:M+lRXTBqGeGNdLjl/ufCoiOlB5xdOkqRJdNxMWT7Zi4=

html/admin.html

@@ -8,6 +8,7 @@
             window.emailEnabled = {{ .email_enabled }};
             window.telegramEnabled = {{ .telegram_enabled }};
             window.discordEnabled = {{ .discord_enabled }};
+            window.matrixEnabled = {{ .matrix_enabled }};
             window.ombiEnabled = {{ .ombiEnabled }};
             window.usernameEnabled = {{ .username }};
             window.langFile = JSON.parse({{ .language }});
@@ -340,6 +341,19 @@
             </div>
         </div>
         {{ end }}
+        <div id="modal-matrix" class="modal">
+            <form class="modal-content card" id="form-matrix" href="">
+                <span class="heading">{{ .strings.linkMatrix }}</span>
+                <p class="content">{{ .strings.linkMatrixDescription }}</p>
+                <input type="text" class="field input ~neutral !high mt-half mb-1" placeholder="{{ .strings.matrixHomeServer }}" id="matrix-homeserver">
+                <input type="text" class="field input ~neutral !high mt-half mb-1" placeholder="{{ .strings.username }}" id="matrix-user">
+                <input type="password" class="field input ~neutral !high mt-half mb-1" placeholder="{{ .strings.password }}" id="matrix-password">
+                <label>
+                    <input type="submit" class="unfocused">
+                    <span class="button ~urge !normal full-width center supra submit">{{ .strings.submit }}</span>
+                </label>
+            </form>
+        </div>
         <div id="notification-box"></div>
         <span class="dropdown" tabindex="0" id="lang-dropdown">
             <span class="button ~urge dropdown-button">
@@ -545,6 +559,9 @@
                                     {{ if .telegram_enabled }}
                                     <th>Telegram</th>
                                     {{ end }}
+                                    {{ if .matrix_enabled }}
+                                    <th>Matrix</th>
+                                    {{ end }}
                                     {{ if .discord_enabled }}
                                     <th>Discord</th>
                                     {{ end }}

html/form-base.html

@@ -22,6 +22,9 @@
     window.discordPIN = "{{ .discordPIN }}";
     window.discordInviteLink = {{ .discordInviteLink }};
     window.discordServerName = "{{ .discordServerName }}";
+    window.matrixEnabled = {{ .matrixEnabled }};
+    window.matrixRequired = {{ .matrixRequired }};
+    window.matrixUserID = "{{ .matrixUser }}";
 </script>
 <script src="js/form.js" type="module"></script>
 {{ end }}

html/form.html

@@ -48,6 +48,24 @@
             </div>
         </div>
         {{ end }}
+        {{ if .matrixEnabled }}
+        <div id="modal-matrix" class="modal">
+            <div class="modal-content card">
+                <span class="heading mb-1">{{ .strings.linkMatrix }}</span>
+                <p class="content mb-1"> {{ .strings.matrixEnterUser }}</p>
+                <input type="text" class="input ~neutral !high" placeholder="@user:riot.im" id="matrix-userid">
+                <div class="subheading link-center mt-1">
+                    <span class="shield ~info mr-1">
+                        <span class="icon">
+                            <i class="ri-chat-3-line"></i>
+                        </span>
+                    </span>
+                    {{ .matrixUser }}
+                </div>
+                <span class="button ~info !normal full-width center mt-1" id="matrix-send">{{ .strings.submit }}</span>
+            </div>
+        </div>
+        {{ end }}
         <span class="dropdown" tabindex="0" id="lang-dropdown">
             <span class="button ~urge dropdown-button">
                 <i class="ri-global-line"></i>
@@ -84,7 +102,10 @@
                             {{ if .discordEnabled }}
                             <span class="button ~info !normal full-width center mb-1" id="link-discord">{{ .strings.linkDiscord }}</span>
                             {{ end }}
-                            {{ if or (.telegramEnabled) (.discordEnabled) }}
+                            {{ if .matrixEnabled }}
+                            <span class="button ~info !normal full-width center mb-1" id="link-matrix">{{ .strings.linkMatrix }}</span>
+                            {{ end }}
+                            {{ if or (.telegramEnabled) (or .discordEnabled .matrixEnabled) }}
                             <div id="contact-via" class="unfocused">
                                 <label class="row switch pb-1">
                                     <input type="radio" name="contact-via" value="email"><span>Contact through Email</span>
@@ -99,6 +120,11 @@
                                     <input type="radio" name="contact-via" value="discord" id="contact-via-discord"><span>Contact through Discord</span>
                                 </label>
                                 {{ end }}
+                                {{ if .matrixEnabled }}
+                                <label class="row switch pb-1">
+                                    <input type="radio" name="contact-via" value="matrix" id="contact-via-matrix"><span>Contact through Matrix</span>
+                                </label>
+                                {{ end }}
                             </div>
                             {{ end }}
                             <label class="label supra" for="create-password">{{ .strings.password }}</label>

lang/admin/en-us.json

@@ -98,7 +98,9 @@
         "notifyUserCreation": "On user creation",
         "sendPIN": "Ask the user to send the PIN below to the bot.",
         "searchDiscordUser": "Start typing the Discord username to find the user.",
-        "findDiscordUser": "Find Discord user"
+        "findDiscordUser": "Find Discord user",
+        "linkMatrixDescription": "Enter the username and password of the user to use as a bot. Once submitted, the app will restart.",
+        "matrixHomeServer": "Home server address"
     },
     "notifications": {
         "changedEmailAddress": "Changed email address of {n}.",

lang/common/en-us.json

@@ -8,6 +8,7 @@
         "emailAddress": "Email Address",
         "name": "Name",
         "submit": "Submit",
+        "send": "Send",
         "success": "Success",
         "error": "Error",
         "copy": "Copy",
@@ -18,6 +19,7 @@
         "contactEmail": "Contact through Email",
         "contactTelegram": "Contact through Telegram",
         "linkDiscord": "Link Discord",
+        "linkMatrix": "Link Matrix",
         "contactDiscord": "Contact through Discord",
         "theme": "Theme"
     }

lang/form/en-us.json

@@ -19,14 +19,17 @@
         "confirmationRequiredMessage": "Please check your email inbox to verify your address.",
         "yourAccountIsValidUntil": "Your account will be valid until {date}.",
         "sendPIN": "Send the PIN below to the bot, then come back here to link your account.",
-        "sendPINDiscord": "Type {command} in {server_channel} on Discord, then send the PIN below via DM to the bot."
+        "sendPINDiscord": "Type {command} in {server_channel} on Discord, then send the PIN below via DM to the bot.",
+        "matrixEnterUser": "Enter your User ID, press submit, and a PIN will be sent to you. Enter it here to continue."
     },
     "notifications": {
         "errorUserExists": "User already exists.",
         "errorInvalidCode": "Invalid invite code.",
         "errorTelegramVerification": "Telegram verification required.",
         "errorDiscordVerification": "Discord verification required.",
+        "errorMatrixVerification": "Matrix verification required.",
         "errorInvalidPIN": "PIN is invalid.",
+        "errorUnknown": "Unknown error.",
         "verified": "Account verified."
     },
     "validationStrings": {

lang/telegram/en-us.json

@@ -4,6 +4,7 @@
     },
     "strings": {
         "startMessage": "Hi!\nEnter your Jellyfin PIN code here to verify your account.",
+        "matrixStartMessage": "Hi\nEnter the below PIN in the Jellyfin sign-up page to verify your account.",
         "invalidPIN": "That PIN was invalid, try again.",
         "pinSuccess": "Success! You can now return to the sign-up page.",
         "languageMessage": "Note: See available languages with {command}, and set language with {command} <language code>."

main.go

@@ -100,6 +100,7 @@ type appContext struct {
 	email            *Emailer
 	telegram         *TelegramDaemon
 	discord          *DiscordDaemon
+	matrix           *MatrixDaemon
 	info, debug, err logger.Logger
 	host             string
 	port             int
@@ -353,6 +354,10 @@ func start(asDaemon, firstCall bool) {
 		if err := app.storage.loadDiscordUsers(); err != nil {
 			app.err.Printf("Failed to load Discord users: %v", err)
 		}
+		app.storage.matrix_path = app.config.Section("files").Key("matrix_users").String()
+		if err := app.storage.loadMatrixUsers(); err != nil {
+			app.err.Printf("Failed to load Matrix users: %v", err)
+		}
 
 		app.storage.profiles_path = app.config.Section("files").Key("user_profiles").String()
 		app.storage.loadProfiles()
@@ -590,6 +595,16 @@ func start(asDaemon, firstCall bool) {
 				defer app.discord.Shutdown()
 			}
 		}
+		if matrixEnabled {
+			app.matrix, err = newMatrixDaemon(app)
+			if err != nil {
+				app.err.Printf("Failed to initialize Matrix daemon: %v", err)
+				matrixEnabled = false
+			} else {
+				go app.matrix.run()
+				defer app.matrix.Shutdown()
+			}
+		}
 	} else {
 		debugMode = false
 		address = "0.0.0.0:8056"

matrix.go

@@ -0,0 +1,238 @@
+package main
+
+import (
+	"encoding/json"
+	"fmt"
+	"strings"
+
+	"github.com/gomarkdown/markdown"
+	"github.com/matrix-org/gomatrix"
+)
+
+type MatrixDaemon struct {
+	Stopped         bool
+	ShutdownChannel chan string
+	bot             *gomatrix.Client
+	userID          string
+	tokens          map[string]UnverifiedUser // Map of tokens to users
+	languages       map[string]string         // Map of roomIDs to language codes
+	app             *appContext
+}
+
+type UnverifiedUser struct {
+	Verified bool
+	User     *MatrixUser
+}
+
+type MatrixUser struct {
+	RoomID  string
+	UserID  string
+	Lang    string
+	Contact bool
+}
+
+type MatrixIdentifier struct {
+	User      string `json:"user"`
+	IdentType string `json:"type"`
+}
+
+func (m MatrixIdentifier) Type() string { return m.IdentType }
+
+var matrixFilter = gomatrix.Filter{
+	Room: gomatrix.RoomFilter{
+		Timeline: gomatrix.FilterPart{
+			Types: []string{
+				"m.room.message",
+				"m.room.member",
+			},
+		},
+	},
+	EventFields: []string{
+		"type",
+		"event_id",
+		"room_id",
+		"state_key",
+		"sender",
+		"content.body",
+		"content.membership",
+	},
+}
+
+func newMatrixDaemon(app *appContext) (d *MatrixDaemon, err error) {
+	matrix := app.config.Section("matrix")
+	homeserver := matrix.Key("homeserver").String()
+	token := matrix.Key("token").String()
+	d = &MatrixDaemon{
+		ShutdownChannel: make(chan string),
+		userID:          matrix.Key("user_id").String(),
+		tokens:          map[string]UnverifiedUser{},
+		languages:       map[string]string{},
+		app:             app,
+	}
+	d.bot, err = gomatrix.NewClient(homeserver, d.userID, token)
+	if err != nil {
+		return
+	}
+	filter, err := json.Marshal(matrixFilter)
+	if err != nil {
+		return
+	}
+	resp, err := d.bot.CreateFilter(filter)
+	d.bot.Store.SaveFilterID(d.userID, resp.FilterID)
+	for _, user := range app.storage.matrix {
+		if user.Lang != "" {
+			d.languages[user.RoomID] = user.Lang
+		}
+	}
+	return
+}
+
+func (d *MatrixDaemon) generateAccessToken(homeserver, username, password string) (string, error) {
+	req := &gomatrix.ReqLogin{
+		Type: "m.login.password",
+		Identifier: MatrixIdentifier{
+			User:      username,
+			IdentType: "m.id.user",
+		},
+		Password: password,
+		DeviceID: "jfa-go-" + commit,
+	}
+	bot, err := gomatrix.NewClient(homeserver, username, "")
+	if err != nil {
+		return "", err
+	}
+	resp, err := bot.Login(req)
+	if err != nil {
+		return "", err
+	}
+	return resp.AccessToken, nil
+}
+
+func (d *MatrixDaemon) run() {
+	d.app.info.Println("Starting Matrix bot daemon")
+	syncer := d.bot.Syncer.(*gomatrix.DefaultSyncer)
+	syncer.OnEventType("m.room.message", d.handleMessage)
+	// syncer.OnEventType("m.room.member", d.handleMembership)
+	if err := d.bot.Sync(); err != nil {
+		d.app.err.Printf("Matrix sync failed: %v", err)
+	}
+}
+
+func (d *MatrixDaemon) Shutdown() {
+	d.bot.StopSync()
+	d.Stopped = true
+	close(d.ShutdownChannel)
+}
+
+func (d *MatrixDaemon) handleMessage(event *gomatrix.Event) {
+	if event.Sender == d.userID {
+		return
+	}
+	lang := "en-us"
+	if l, ok := d.languages[event.RoomID]; ok {
+		if _, ok := d.app.storage.lang.Telegram[l]; ok {
+			lang = l
+		}
+	}
+	sects := strings.Split(event.Content["body"].(string), " ")
+	switch sects[0] {
+	case "!lang":
+		if len(sects) == 2 {
+			d.commandLang(event, sects[1], lang)
+		} else {
+			d.commandLang(event, "", lang)
+		}
+	}
+}
+
+func (d *MatrixDaemon) commandLang(event *gomatrix.Event, code, lang string) {
+	if code == "" {
+		list := "!lang <lang>\n"
+		for c := range d.app.storage.lang.Telegram {
+			list += fmt.Sprintf("%s: %s\n", c, d.app.storage.lang.Telegram[c].Meta.Name)
+		}
+		_, err := d.bot.SendText(
+			event.RoomID,
+			list,
+		)
+		if err != nil {
+			d.app.err.Printf("Matrix: Failed to send message to \"%s\": %v", event.Sender, err)
+		}
+		return
+	}
+	if _, ok := d.app.storage.lang.Telegram[code]; !ok {
+		return
+	}
+	d.languages[event.RoomID] = code
+	if u, ok := d.app.storage.matrix[event.RoomID]; ok {
+		u.Lang = code
+		d.app.storage.matrix[event.RoomID] = u
+		if err := d.app.storage.storeMatrixUsers(); err != nil {
+			d.app.err.Printf("Matrix: Failed to store Matrix users: %v", err)
+		}
+	}
+}
+
+func (d *MatrixDaemon) CreateRoom(userID string) (string, error) {
+	room, err := d.bot.CreateRoom(&gomatrix.ReqCreateRoom{
+		Visibility: "private",
+		Invite:     []string{userID},
+		Topic:      d.app.config.Section("matrix").Key("topic").String(),
+	})
+	if err != nil {
+		return "", err
+	}
+	return room.RoomID, nil
+}
+
+func (d *MatrixDaemon) SendStart(userID string) (ok bool) {
+	roomID, err := d.CreateRoom(userID)
+	if err != nil {
+		d.app.err.Printf("Failed to create room for user \"%s\": %v", userID, err)
+		return
+	}
+	lang := "en-us"
+	pin := genAuthToken()
+	d.tokens[pin] = UnverifiedUser{
+		false,
+		&MatrixUser{
+			RoomID: roomID,
+			UserID: userID,
+			Lang:   lang,
+		},
+	}
+	_, err = d.bot.SendText(
+		roomID,
+		d.app.storage.lang.Telegram[lang].Strings.get("matrixStartMessage")+"\n\n"+pin+"\n\n"+
+			d.app.storage.lang.Telegram[lang].Strings.template("languageMessage", tmpl{"command": "!lang"}),
+	)
+	if err != nil {
+		d.app.err.Printf("Matrix: Failed to send welcome message to \"%s\": %v", userID, err)
+		return
+	}
+	ok = true
+	return
+}
+
+func (d *MatrixDaemon) Send(message *Message, roomID ...string) (err error) {
+	md := ""
+	if message.Markdown != "" {
+		// Convert images to links
+		md = string(markdown.ToHTML([]byte(strings.ReplaceAll(message.Markdown, "![", "[")), nil, renderer))
+	}
+	for _, id := range roomID {
+		if md != "" {
+			_, err = d.bot.SendFormattedText(id, message.Text, md)
+		} else {
+			_, err = d.bot.SendText(id, message.Text)
+		}
+		if err != nil {
+			return
+		}
+	}
+	return
+}
+
+// User enters ID on sign-up, a PIN is sent to them. They enter it on sign-up.
+
+// Message the user first, to avoid E2EE by default

models.go

@@ -19,6 +19,8 @@ type newUserDTO struct {
 	TelegramContact bool   `json:"telegram_contact"`                            // Whether or not to use telegram for notifications/pwrs
 	DiscordPIN      string `json:"discord_pin" example:"A1-B2-3C"`              // Discord verification PIN (if used)
 	DiscordContact  bool   `json:"discord_contact"`                             // Whether or not to use discord for notifications/pwrs
+	MatrixPIN       string `json:"matrix_pin" example:"A1-B2-3C"`               // Matrix verification PIN (if used)
+	MatrixContact   bool   `json:"matrix_contact"`                              // Whether or not to use matrix for notifications/pwrs
 }
 
 type newUserResponse struct {
@@ -137,6 +139,8 @@ type respUser struct {
 	Discord               string `json:"discord"`    // Discord username (if known)
 	DiscordID             string `json:"discord_id"` // Discord user ID for creating links.
 	NotifyThroughDiscord  bool   `json:"notify_discord"`
+	Matrix                string `json:"matrix"` // Matrix ID (if known)
+	NotifyThroughMatrix   bool   `json:"notify_matrix"`
 }
 
 type getUsersDTO struct {
@@ -260,6 +264,7 @@ type SetContactMethodsDTO struct {
 	Email    bool   `json:"email"`
 	Discord  bool   `json:"discord"`
 	Telegram bool   `json:"telegram"`
+	Matrix   bool   `json:"matrix"`
 }
 
 type DiscordUserDTO struct {
@@ -281,3 +286,22 @@ type DiscordInviteDTO struct {
 	InviteURL string `json:"invite"`
 	IconURL   string `json:"icon"`
 }
+
+type MatrixSendPINDTO struct {
+	UserID string `json:"user_id"`
+}
+
+type MatrixCheckPINDTO struct {
+	PIN string `json:"pin"`
+}
+
+type MatrixConnectUserDTO struct {
+	JellyfinID string `json:"jf_id"`
+	UserID     string `json:"user_id"`
+}
+
+type MatrixLoginDTO struct {
+	Homeserver string `json:"homeserver"`
+	Username   string `json:"username"`
+	Password   string `json:"password"`
+}

router.go

@@ -127,6 +127,11 @@ func (app *appContext) loadRoutes(router *gin.Engine) {
 				router.GET(p+"/invite/:invCode/discord/invite", app.DiscordServerInvite)
 			}
 		}
+		if matrixEnabled {
+			router.GET(p+"/invite/:invCode/matrix/verified/:userID/:pin", app.MatrixCheckPIN)
+			router.POST(p+"/invite/:invCode/matrix/user", app.MatrixSendPIN)
+			router.POST(p+"/users/matrix", app.MatrixConnect)
+		}
 	}
 	if *SWAGGER {
 		app.info.Print(warning("\n\nWARNING: Swagger should not be used on a public instance.\n\n"))
@@ -164,7 +169,7 @@ func (app *appContext) loadRoutes(router *gin.Engine) {
 		api.GET(p+"/config", app.GetConfig)
 		api.POST(p+"/config", app.ModifyConfig)
 		api.POST(p+"/restart", app.restart)
-		if telegramEnabled || discordEnabled {
+		if telegramEnabled || discordEnabled || matrixEnabled {
 			api.GET(p+"/telegram/pin", app.TelegramGetPin)
 			api.GET(p+"/telegram/verified/:pin", app.TelegramVerified)
 			api.POST(p+"/users/telegram", app.TelegramAddUser)
@@ -178,6 +183,8 @@ func (app *appContext) loadRoutes(router *gin.Engine) {
 			api.GET(p+"/ombi/users", app.OmbiUsers)
 			api.POST(p+"/ombi/defaults", app.SetOmbiDefaults)
 		}
+		api.POST(p+"/matrix/login", app.MatrixLogin)
+
 	}
 }
 

storage.go

@@ -15,21 +15,22 @@ import (
 )
 
 type Storage struct {
-	timePattern                                                                                                                                                        string
+	timePattern                                                                                                                                                                     string
-	invite_path, emails_path, policy_path, configuration_path, displayprefs_path, ombi_path, profiles_path, customEmails_path, users_path, telegram_path, discord_path string
+	invite_path, emails_path, policy_path, configuration_path, displayprefs_path, ombi_path, profiles_path, customEmails_path, users_path, telegram_path, discord_path, matrix_path string
-	users                                                                                                                                                              map[string]time.Time
+	users                                                                                                                                                                           map[string]time.Time
-	invites                                                                                                                                                            Invites
+	invites                                                                                                                                                                         Invites
-	profiles                                                                                                                                                           map[string]Profile
+	profiles                                                                                                                                                                        map[string]Profile
-	defaultProfile                                                                                                                                                     string
+	defaultProfile                                                                                                                                                                  string
-	displayprefs, ombi_template                                                                                                                                        map[string]interface{}
+	displayprefs, ombi_template                                                                                                                                                     map[string]interface{}
-	emails                                                                                                                                                             map[string]EmailAddress
+	emails                                                                                                                                                                          map[string]EmailAddress
-	telegram                                                                                                                                                           map[string]TelegramUser // Map of Jellyfin User IDs to telegram users.
+	telegram                                                                                                                                                                        map[string]TelegramUser // Map of Jellyfin User IDs to telegram users.
-	discord                                                                                                                                                            map[string]DiscordUser  // Map of Jellyfin user IDs to discord users.
+	discord                                                                                                                                                                         map[string]DiscordUser  // Map of Jellyfin user IDs to discord users.
-	customEmails                                                                                                                                                       customEmails
+	matrix                                                                                                                                                                          map[string]MatrixUser   // Map of Jellyfin user IDs to Matrix users.
-	policy                                                                                                                                                             mediabrowser.Policy
+	customEmails                                                                                                                                                                    customEmails
-	configuration                                                                                                                                                      mediabrowser.Configuration
+	policy                                                                                                                                                                          mediabrowser.Policy
-	lang                                                                                                                                                               Lang
+	configuration                                                                                                                                                                   mediabrowser.Configuration
-	invitesLock, usersLock                                                                                                                                             sync.Mutex
+	lang                                                                                                                                                                            Lang
+	invitesLock, usersLock                                                                                                                                                          sync.Mutex
 }
 
 type TelegramUser struct {
@@ -790,6 +791,14 @@ func (st *Storage) storeDiscordUsers() error {
 	return storeJSON(st.discord_path, st.discord)
 }
 
+func (st *Storage) loadMatrixUsers() error {
+	return loadJSON(st.matrix_path, &st.matrix)
+}
+
+func (st *Storage) storeMatrixUsers() error {
+	return storeJSON(st.matrix_path, st.matrix)
+}
+
 func (st *Storage) loadCustomEmails() error {
 	return loadJSON(st.customEmails_path, &st.customEmails)
 }

telegram.go

@@ -58,7 +58,7 @@ func genAuthToken() string {
 	rand.Seed(time.Now().UnixNano())
 	pin := make([]rune, 8)
 	for i := range pin {
-		if i == 2 || i == 5 {
+		if (i+1)%3 == 0 {
 			pin[i] = '-'
 		} else {
 			pin[i] = runes[rand.Intn(len(runes))]

ts/admin.ts

@@ -63,6 +63,8 @@ window.availableProfiles = window.availableProfiles || [];
 
     window.modals.updateInfo = new Modal(document.getElementById("modal-update"));
 
+    window.modals.matrix = new Modal(document.getElementById("modal-matrix"));
+
     if (window.telegramEnabled) {
         window.modals.telegram = new Modal(document.getElementById("modal-telegram"));
     }

ts/form.ts

@@ -1,6 +1,6 @@
 import { Modal } from "./modules/modal.js";
 import { notificationBox, whichAnimationEvent } from "./modules/common.js";
-import { _get, _post, toggleLoader, toDateString } from "./modules/common.js";
+import { _get, _post, toggleLoader, addLoader, removeLoader, toDateString } from "./modules/common.js";
 import { loadLangSelector } from "./modules/lang.js";
 
 interface formWindow extends Window {
@@ -9,6 +9,7 @@ interface formWindow extends Window {
     successModal: Modal;
     telegramModal: Modal;
     discordModal: Modal;
+    matrixModal: Modal;
     confirmationModal: Modal
     code: string;
     messages: { [key: string]: string };
@@ -20,6 +21,8 @@ interface formWindow extends Window {
     discordStartCommand: string;
     discordInviteLink: boolean;
     discordServerName: string;
+    matrixRequired: boolean;
+    matrixUserID: string;
     userExpiryEnabled: boolean;
     userExpiryMonths: number;
     userExpiryDays: number;
@@ -150,6 +153,69 @@ if (window.discordEnabled) {
     };
 }
 
+var matrixVerified = false;
+var matrixPIN = "";
+if (window.matrixEnabled) {
+    window.matrixModal = new Modal(document.getElementById("modal-matrix"), window.matrixRequired);
+    const matrixButton = document.getElementById("link-matrix") as HTMLSpanElement;
+    matrixButton.onclick = window.matrixModal.show;
+    const submitButton = document.getElementById("matrix-send") as HTMLSpanElement;
+    const input = document.getElementById("matrix-userid") as HTMLInputElement;
+    let userID = "";
+    submitButton.onclick = () => {
+        addLoader(submitButton);
+        if (userID == "") {
+            const send = {
+                user_id: input.value
+            };
+            _post("/invite/" + window.code + "/matrix/user", send, (req: XMLHttpRequest) => {
+                if (req.readyState == 4) {
+                    removeLoader(submitButton);
+                    userID = input.value;
+                    if (req.status != 200) {
+                        window.notifications.customError("errorUnknown", window.messages["errorUnknown"]);
+                        window.matrixModal.close();
+                        return;
+                    }
+                    submitButton.classList.add("~positive");
+                    submitButton.classList.remove("~info");
+                    setTimeout(() => {
+                        submitButton.classList.add("~info");
+                        submitButton.classList.remove("~positive");
+                    }, 2000);
+                    input.placeholder = "PIN";
+                    input.value = "";
+                }
+            });
+        } else {
+            _get("/invite/" + window.code + "/matrix/verified/" + userID + "/" + input.value, null, (req: XMLHttpRequest) => {
+                if (req.readyState == 4) {
+                    removeLoader(submitButton)
+                    const valid = req.response["success"] as boolean;
+                    if (valid) {
+                        window.matrixModal.close();
+                        window.notifications.customPositive("successVerified", "", window.messages["verified"]);
+                        matrixVerified = true;
+                        matrixPIN = input.value;
+                        matrixButton.classList.add("unfocused");
+                        document.getElementById("contact-via").classList.remove("unfocused");
+                        const radio = document.getElementById("contact-via-discord") as HTMLInputElement;
+                        radio.checked = true;
+                    } else {
+                        window.notifications.customError("errorInvalidPIN", window.messages["errorInvalidPIN"]);
+                        submitButton.classList.add("~critical");
+                        submitButton.classList.remove("~info");
+                        setTimeout(() => {
+                            submitButton.classList.add("~info");
+                            submitButton.classList.remove("~critical");
+                        }, 800);
+                    }
+                }
+            },);
+        }
+    };
+}
+
 if (window.confirmation) {
     window.confirmationModal = new Modal(document.getElementById("modal-confirmation"), true);
 }
@@ -229,6 +295,8 @@ interface sendDTO {
     telegram_contact?: boolean;
     discord_pin?: string;
     discord_contact?: boolean;
+    matrix_pin?: string;
+    matrix_contact?: boolean;
 }
 
 const create = (event: SubmitEvent) => {
@@ -254,6 +322,13 @@ const create = (event: SubmitEvent) => {
             send.discord_contact = true;
         }
     }
+    if (matrixVerified) {
+        send.matrix_pin = matrixPIN;
+        const radio = document.getElementById("contact-via-matrix") as HTMLInputElement;
+        if (radio.checked) {
+            send.matrix_contact = true;
+        }
+    }
     _post("/newUser", send, (req: XMLHttpRequest) => {
         if (req.readyState == 4) {
             let vals = req.response as respDTO;

ts/modules/accounts.ts

@@ -18,6 +18,8 @@ interface User {
     discord: string;
     notify_discord: boolean;
     discord_id: string;
+    matrix: string;
+    notify_matrix: boolean;
 }
 
 interface getPinResponse {
@@ -44,13 +46,27 @@ class user implements User {
     private _discordUsername: string;
     private _discordID: string;
     private _notifyDiscord: boolean;
+    private _matrix: HTMLTableDataCellElement;
+    private _matrixID: string;
+    private _notifyMatrix: boolean;
     private _expiry: HTMLTableDataCellElement;
     private _expiryUnix: number;
     private _lastActive: HTMLTableDataCellElement;
     private _lastActiveUnix: number;
+    private _notifyDropdown: HTMLDivElement;
     id = "";
     private _selected: boolean;
 
+    private _lastNotifyMethod = (): string => {
+        // Telegram, Matrix, Discord
+        const telegram = this._telegramUsername && this._telegramUsername != "";
+        const discord = this._discordUsername && this._discordUsername != "";
+        const matrix = this._matrixID && this._matrixID != "";
+        if (discord) return "discord";
+        if (matrix) return "matrix";
+        if (telegram) return "telegram";
+    }
+
     get selected(): boolean { return this._selected; }
     set selected(state: boolean) {
         this._selected = state;
@@ -96,105 +112,179 @@ class user implements User {
 
     get notify_email(): boolean { return this._notifyEmail; }
     set notify_email(s: boolean) {
-        this._notifyEmail = s;
+        if (this._notifyDropdown) {
-        if (window.telegramEnabled && this._telegramUsername != "") {
+            (this._notifyDropdown.querySelector(".accounts-contact-email") as HTMLInputElement).checked = s;
-            const email = this._telegram.getElementsByClassName("accounts-contact-email")[0] as HTMLInputElement;
+        }
-            if (email) {
+    }
-                email.checked = s;
+
+    private _constructDropdown = (): HTMLDivElement => {
+        const el = document.createElement("div") as HTMLDivElement;
+        const telegram = this._telegramUsername != "";
+        const discord = this._discordUsername != "";
+        const matrix = this._matrixID != "";
+        if (!telegram && !discord && !matrix) return;
+        let innerHTML = `
+        <i class="icon ri-settings-2-line ml-half dropdown-button"></i>
+        <div class="dropdown manual">
+            <div class="dropdown-display lg">
+                <div class="card ~neutral !low">
+                    <span class="supra sm">${window.lang.strings("contactThrough")}</span>
+                    <label class="row switch pb-1 mt-half">
+                        <input type="checkbox" name="accounts-contact-${this.id}" class="accounts-contact-email">
+                        </span>Email</span>
+                    </label>
+                    <div class="accounts-area-telegram">
+                        <label class="row switch pb-1">
+                            <input type="checkbox" name="accounts-contact-${this.id}" class="accounts-contact-telegram">
+                            <span>Telegram</span>
+                        </label>
+                    </div>
+                    <div class="accounts-area-discord">
+                        <label class="row switch pb-1">
+                            <input type="checkbox" name="accounts-contact-${this.id}" class="accounts-contact-discord">
+                            <span>Discord</span>
+                        </label>
+                    </div>
+                    <div class="accounts-area-matrix">
+                        <label class="row switch pb-1">
+                            <input type="checkbox" name="accounts-contact-${this.id}" class="accounts-contact-matrix">
+                            <span>Matrix</span>
+                        </label>
+                    </div>
+                </div>
+            </div>
+        </div>
+        `;
+        el.innerHTML = innerHTML;
+        const button = el.querySelector("i");
+        const dropdown = el.querySelector("div.dropdown") as HTMLDivElement;
+        const checks = el.querySelectorAll("input") as NodeListOf<HTMLInputElement>;
+        for (let i = 0; i < checks.length; i++) {
+            checks[i].onclick = () => this._setNotifyMethod();
+        }
+
+        button.onclick = () => {
+            dropdown.classList.add("selected");
+            document.addEventListener("click", outerClickListener);
+        };
+        const outerClickListener = (event: Event) => {
+            if (!(event.target instanceof HTMLElement && (el.contains(event.target) || button.contains(event.target)))) {
+                dropdown.classList.remove("selected");
+                document.removeEventListener("click", outerClickListener);
+            }
+        };
+        return el;
+    }
+
+    get matrix(): string { return this._matrixID; }
+    set matrix(u: string) {
+        if (!window.matrixEnabled) {
+            this._notifyDropdown.querySelector(".accounts-area-matrix").classList.add("unfocused");
+            return;
+        }
+        const lastNotifyMethod = this._lastNotifyMethod() == "matrix";
+        this._matrixID = u;
+        if (!u) {
+            this._notifyDropdown.querySelector(".accounts-area-matrix").classList.add("unfocused");
+            this._matrix.innerHTML = `
+            <span class="chip btn !low">${window.lang.strings("add")}</span>
+            <input type="text" class="input ~neutral !normal stealth-input unfocused" placeholder="@user:riot.im">
+            `;
+            (this._matrix.querySelector("span") as HTMLSpanElement).onclick = this._addMatrix;
+        } else {
+            this._notifyDropdown.querySelector(".accounts-area-matrix").classList.remove("unfocused");
+            this._matrix.innerHTML = `
+            <div class="table-inline">
+                ${u}
+            </div>
+            `;
+            if (lastNotifyMethod) {
+                (this._matrix.querySelector(".table-inline") as HTMLDivElement).appendChild(this._notifyDropdown);
             }
         }
-        if (window.discordEnabled && this._discordUsername) {
+    }
-            const email = this._discord.getElementsByClassName("accounts-contact-email")[0] as HTMLInputElement;
+   
-            email.checked = s;
+    private _addMatrix = () => {
+        const addButton = this._matrix.querySelector(".btn") as HTMLSpanElement;
+        const icon = this._matrix.querySelector("i");
+        const input = this._matrix.querySelector("input.stealth-input") as HTMLInputElement;
+        if (addButton.classList.contains("chip")) {
+            input.classList.remove("unfocused");
+            addButton.innerHTML = `<i class="ri-check-line"></i>`;
+            addButton.classList.remove("chip")
+            if (icon) {
+                icon.classList.add("unfocused");
+            }
+        } else {
+            if (input.value.charAt(0) != "@" || !input.value.includes(":")) return;
+            const send = {
+                jf_id: this.id,
+                user_id: input.value
+            }
+            _post("/users/matrix", send, (req: XMLHttpRequest) => {
+                if (req.readyState == 4) {
+                    document.dispatchEvent(new CustomEvent("accounts-reload"));
+                    if (req.status != 200) {
+                        window.notifications.customError("errorConnectMatrix", window.lang.notif("errorFailureCheckLogs"));
+                        return;
+                    }
+                    window.notifications.customSuccess("connectMatrix", window.lang.notif("accountConnected"));
+                }
+            });
+        }
+    }
+
+    get notify_matrix(): boolean { return this._notifyMatrix; }
+    set notify_matrix(s: boolean) {
+        if (this._notifyDropdown) {
+            (this._notifyDropdown.querySelector(".accounts-contact-matrix") as HTMLInputElement).checked = s;
         }
     }
     
     get telegram(): string { return this._telegramUsername; }
     set telegram(u: string) {
-        if (!window.telegramEnabled) return;
+        if (!window.telegramEnabled) {
+            this._notifyDropdown.querySelector(".accounts-area-telegram").classList.add("unfocused");
+            return;
+        }
+        const lastNotifyMethod = this._lastNotifyMethod() == "telegram";
         this._telegramUsername = u;
-        if (u == "") {
+        if (!u) {
-            this._telegram.innerHTML = `<span class="chip btn !low">Add</span>`;
+            this._notifyDropdown.querySelector(".accounts-area-telegram").classList.add("unfocused");
+            this._telegram.innerHTML = `<span class="chip btn !low">${window.lang.strings("add")}</span>`;
             (this._telegram.querySelector("span") as HTMLSpanElement).onclick = this._addTelegram;
         } else {
-            let innerHTML = `
+            this._notifyDropdown.querySelector(".accounts-area-telegram").classList.remove("unfocused");
+            this._telegram.innerHTML = `
             <div class="table-inline">
                 <a href="https://t.me/${u}" target="_blank">@${u}</a>
+            </div>
             `;
-            if (!window.discordEnabled || !this._discordUsername) {
+            if (lastNotifyMethod) {
-                innerHTML += `
+                (this._telegram.querySelector(".table-inline") as HTMLDivElement).appendChild(this._notifyDropdown);
-                    <i class="icon ri-settings-2-line ml-half dropdown-button"></i>
-                    <div class="dropdown manual">
-                        <div class="dropdown-display lg">
-                            <div class="card ~neutral !low">
-                                <span class="supra sm">${window.lang.strings("contactThrough")}</span>
-                                <label class="row switch pb-1 mt-half">
-                                    <input type="checkbox" name="accounts-contact-${this.id}" class="accounts-contact-email">
-                                    <span>Email</span>
-                                </label>
-                                <label class="row switch pb-1">
-                                    <input type="checkbox" name="accounts-contact-${this.id}" class="accounts-contact-telegram">
-                                    <span>Telegram</span>
-                                </label>
-                            </div>
-                        </div>
-                    </div>
-                `;
-            }
-            innerHTML += "</div>";
-            this._telegram.innerHTML = innerHTML;
-            if (!window.discordEnabled || !this._discordUsername) {
-                // Javascript is necessary as including the button inside the dropdown would make it too wide to display next to the username.
-                const button = this._telegram.querySelector("i");
-                const dropdown = this._telegram.querySelector("div.dropdown") as HTMLDivElement;
-                const checks = this._telegram.querySelectorAll("input") as NodeListOf<HTMLInputElement>;
-                for (let i = 0; i < checks.length; i++) {
-                    checks[i].onclick = () => this._setNotifyMethod("telegram");
-                }
-
-                button.onclick = () => {
-                    dropdown.classList.add("selected");
-                    document.addEventListener("click", outerClickListener);
-                };
-                const outerClickListener = (event: Event) => {
-                    if (!(event.target instanceof HTMLElement && (this._telegram.contains(event.target) || button.contains(event.target)))) {
-                        dropdown.classList.remove("selected");
-                        document.removeEventListener("click", outerClickListener);
-                    }
-                };
             }
         }
     }
     
     get notify_telegram(): boolean { return this._notifyTelegram; }
     set notify_telegram(s: boolean) {
-        if (!window.telegramEnabled || !this._telegramUsername) return;
+        if (this._notifyDropdown) {
-        this._notifyTelegram = s;
+            (this._notifyDropdown.querySelector(".accounts-contact-telegram") as HTMLInputElement).checked = s;
-        const telegram = this._telegram.getElementsByClassName("accounts-contact-telegram")[0] as HTMLInputElement;
-        if (telegram) {
-            telegram.checked = s;
-        }
-        if (window.discordEnabled && this._discordUsername) {
-            const telegram = this._discord.getElementsByClassName("accounts-contact-telegram")[0] as HTMLInputElement;
-            telegram.checked = s;
         }
     }
 
-    private _setNotifyMethod = (mode: string = "telegram") => {
+    private _setNotifyMethod = () => {
-        let el: HTMLElement;
+        const email = this._notifyDropdown.getElementsByClassName("accounts-contact-email")[0] as HTMLInputElement;
-        if (mode == "telegram") { el = this._telegram }
-        else if (mode == "discord") { el = this._discord }
-        const email = el.getElementsByClassName("accounts-contact-email")[0] as HTMLInputElement;
         let send = {
             id: this.id,
             email: email.checked
         }
         if (window.telegramEnabled && this._telegramUsername) {
-            const telegram = el.getElementsByClassName("accounts-contact-telegram")[0] as HTMLInputElement;
+            const telegram = this._notifyDropdown.getElementsByClassName("accounts-contact-telegram")[0] as HTMLInputElement;
             send["telegram"] = telegram.checked;
         }
         if (window.discordEnabled && this._discordUsername) {
-            const discord = el.getElementsByClassName("accounts-contact-discord")[0] as HTMLInputElement;
+            const discord = this._notifyDropdown.getElementsByClassName("accounts-contact-discord")[0] as HTMLInputElement;
             send["discord"] = discord.checked;
         }
         _post("/users/contact", send, (req: XMLHttpRequest) => {
@@ -219,62 +309,26 @@ class user implements User {
     
     get discord(): string { return this._discordUsername; }
     set discord(u: string) {
-        if (!window.discordEnabled) return;
+        if (!window.discordEnabled) {
+            this._notifyDropdown.querySelector(".accounts-area-discord").classList.add("unfocused");
+            return;
+        }
+        const lastNotifyMethod = this._lastNotifyMethod() == "discord";
         this._discordUsername = u;
-        if (u == "") {
+        if (!u) {
             this._discord.innerHTML = `<span class="chip btn !low">Add</span>`;
             (this._discord.querySelector("span") as HTMLSpanElement).onclick = () => addDiscord(this.id);
+            this._notifyDropdown.querySelector(".accounts-area-discord").classList.add("unfocused");
         } else {
-            let innerHTML = `
+            this._notifyDropdown.querySelector(".accounts-area-discord").classList.remove("unfocused");
+            this._discord.innerHTML = `
             <div class="table-inline">
                 <a href="https://discord.com/users/${this._discordID}" class="discord-link" target="_blank">${u}</a>
-                <i class="icon ri-settings-2-line ml-half dropdown-button"></i>
-                <div class="dropdown manual">
-                    <div class="dropdown-display lg">
-                        <div class="card ~neutral !low">
-                            <span class="supra sm">${window.lang.strings("contactThrough")}</span>
-                            <label class="row switch pb-1 mt-half">
-                                <input type="checkbox" name="accounts-contact-${this.id}" class="accounts-contact-email">
-                                <span>Email</span>
-                            </label>
-                            <label class="row switch pb-1">
-                                <input type="checkbox" name="accounts-contact-${this.id}" class="accounts-contact-discord">
-                                <span>Discord</span>
-                            </label>
-            `;
-            if (window.telegramEnabled && this._telegramUsername != "") {
-                innerHTML += `
-                            <label class="row switch pb-1">
-                                <input type="checkbox" name="accounts-contact-${this.id}" class="accounts-contact-telegram">
-                                <span>Telegram</span>
-                            </label>
-                `;
-            }
-            innerHTML += `
-                        </div>
-                    </div>
-                </div>
             </div>
             `;
-            this._discord.innerHTML = innerHTML;
+            if (lastNotifyMethod) {
-            // Javascript is necessary as including the button inside the dropdown would make it too wide to display next to the username.
+                (this._discord.querySelector(".table-inline") as HTMLDivElement).appendChild(this._notifyDropdown);
-            const button = this._discord.querySelector("i");
-            const dropdown = this._discord.querySelector("div.dropdown") as HTMLDivElement;
-            const checks = this._discord.querySelectorAll("input") as NodeListOf<HTMLInputElement>;
-            for (let i = 0; i < checks.length; i++) {
-                checks[i].onclick = () => this._setNotifyMethod("discord");
             }
-
-            button.onclick = () => {
-                dropdown.classList.add("selected");
-                document.addEventListener("click", outerClickListener);
-            };
-            const outerClickListener = (event: Event) => {
-                if (!(event.target instanceof HTMLElement && (this._discord.contains(event.target) || button.contains(event.target)))) {
-                    dropdown.classList.remove("selected");
-                    document.removeEventListener("click", outerClickListener);
-                }
-            };
         }
     }
 
@@ -288,13 +342,8 @@ class user implements User {
     
     get notify_discord(): boolean { return this._notifyDiscord; }
     set notify_discord(s: boolean) {
-        if (!window.discordEnabled || !this._discordUsername) return;
+        if (this._notifyDropdown) {
-        this._notifyDiscord = s;
+            (this._notifyDropdown.querySelector(".accounts-contact-discord") as HTMLInputElement).checked = s;
-        const discord = this._discord.getElementsByClassName("accounts-contact-discord")[0] as HTMLInputElement;
-        discord.checked = s;
-        if (window.telegramEnabled && this._telegramUsername != "") {
-            const discord = this._discord.getElementsByClassName("accounts-contact-discord")[0] as HTMLInputElement;
-            discord.checked = s;
         }
     }
 
@@ -333,6 +382,11 @@ class user implements User {
             <td class="accounts-telegram"></td>
             `;
         }
+        if (window.matrixEnabled) {
+            innerHTML += `
+            <td class="accounts-matrix"></td>
+            `;
+        }
         if (window.discordEnabled) {
             innerHTML += `
             <td class="accounts-discord"></td>
@@ -352,10 +406,13 @@ class user implements User {
         this._emailEditButton = this._row.querySelector(".accounts-email-edit") as HTMLElement;
         this._telegram = this._row.querySelector(".accounts-telegram") as HTMLTableDataCellElement;
         this._discord = this._row.querySelector(".accounts-discord") as HTMLTableDataCellElement;
+        this._matrix = this._row.querySelector(".accounts-matrix") as HTMLTableDataCellElement;
         this._expiry = this._row.querySelector(".accounts-expiry") as HTMLTableDataCellElement;
         this._lastActive = this._row.querySelector(".accounts-last-active") as HTMLTableDataCellElement;
         this._check.onchange = () => { this.selected = this._check.checked; }
 
+        this._notifyDropdown = this._constructDropdown();
+
         const toggleStealthInput = () => {
             if (this._emailEditButton.classList.contains("ri-edit-line")) {
                 this._email.innerHTML = emailEditor;
@@ -458,14 +515,20 @@ class user implements User {
         this.id = user.id;
         this.name = user.name;
         this.email = user.email || "";
+        // Little hack to get settings cogs to appear on first load
+        this._discordUsername = user.discord;
+        this._telegramUsername = user.telegram;
+        this._matrixID = user.matrix;
         this.discord = user.discord;
         this.telegram = user.telegram;
+        this.matrix = user.matrix;
         this.last_active = user.last_active;
         this.admin = user.admin;
         this.disabled = user.disabled;
         this.expiry = user.expiry;
         this.notify_discord = user.notify_discord;
         this.notify_telegram = user.notify_telegram;
+        this.notify_matrix = user.notify_matrix;
         this.notify_email = user.notify_email;
         this.discord_id = user.discord_id;
     }

ts/modules/common.ts

@@ -105,7 +105,11 @@ export class notificationBox implements NotificationBox {
     private _error = (message: string): HTMLElement => {
         const noti = document.createElement('aside');
         noti.classList.add("aside", "~critical", "!normal", "mt-half", "notification-error");
-        noti.innerHTML = `<strong>${window.lang.strings("error")}:</strong> ${message}`;
+        let error = "";
+        if (window.lang) {
+            error = window.lang.strings("error") + ":"
+        }
+        noti.innerHTML = `<strong>${error}</strong> ${message}`;
         const closeButton = document.createElement('span') as HTMLSpanElement;
         closeButton.classList.add("button", "~critical", "!low", "ml-1");
         closeButton.innerHTML = `<i class="icon ri-close-line"></i>`;

ts/modules/settings.ts

@@ -1,4 +1,4 @@
-import { _get, _post, toggleLoader } from "../modules/common.js";
+import { _get, _post, toggleLoader, addLoader, removeLoader } from "../modules/common.js";
 import { Marked } from "@ts-stack/markdown";
 import { stripMarkdown } from "../modules/stripmd.js";
 
@@ -666,6 +666,40 @@ export class settingsList {
         }
     }
 
+    private _addMatrix = () => {
+        // Modify the login modal, why not
+        const modal = document.getElementById("form-matrix") as HTMLFormElement;
+        modal.onsubmit = (event: Event) => {
+            event.preventDefault();
+            const button = modal.querySelector("span.submit") as HTMLSpanElement;
+            addLoader(button);
+            let send = {
+                homeserver: (document.getElementById("matrix-homeserver") as HTMLInputElement).value,
+                username: (document.getElementById("matrix-user") as HTMLInputElement).value,
+                password: (document.getElementById("matrix-password") as HTMLInputElement).value
+            }
+            _post("/matrix/login", send, (req: XMLHttpRequest) => {
+                if (req.readyState == 4) {
+                    removeLoader(button);
+                    if (req.status == 400) {
+                        window.notifications.customError("errorUnknown", window.lang.notif(req.response["error"] as string));
+                        return;
+                    } else if (req.status == 401) {
+                        window.notifications.customError("errorUnauthorized", req.response["error"] as string);
+                        return;
+                    } else if (req.status == 500) {
+                        window.notifications.customError("errorAddMatrix", window.lang.notif("errorFailureCheckLogs"));
+                        return;
+                    }
+                    window.modals.matrix.close();
+                    _post("/restart", null, () => {});
+                    window.location.reload();
+                }
+            }, true);
+        };
+        window.modals.matrix.show();
+    }
+
     reload = () => _get("/config", null, (req: XMLHttpRequest) => {
         if (req.readyState == 4) {
             if (req.status != 200) {
@@ -698,6 +732,17 @@ export class settingsList {
                             icon.onclick = () => window.updater.checkForUpdates(window.modals.updateInfo.show);
                         }
                         this.addSection(name, settings.sections[name], icon);
+                    } else if (name == "matrix" && !window.matrixEnabled) {
+                        const addButton = document.createElement("div");
+                        addButton.classList.add("tooltip", "left");
+                        addButton.innerHTML = `
+                        <span class="button ~neutral !normal">+</span>
+                        <span class="content sm">
+                        ${window.lang.strings("linkMatrix")}
+                        </span>
+                        `;
+                        (addButton.querySelector("span.button") as HTMLSpanElement).onclick = this._addMatrix;
+                        this.addSection(name, settings.sections[name], addButton);
                     } else {
                         this.addSection(name, settings.sections[name]);
                     }

ts/typings/d.ts

@@ -22,6 +22,7 @@ declare interface Window {
     emailEnabled: boolean;
     telegramEnabled: boolean;
     discordEnabled: boolean;
+    matrixEnabled: boolean;
     ombiEnabled: boolean;
     usernameEnabled: boolean;
     token: string;
@@ -103,6 +104,7 @@ declare interface Modals {
     updateInfo: Modal;
     telegram: Modal;
     discord: Modal;
+    matrix: Modal;
 }
 
 interface Invite {

views.go

@@ -123,6 +123,7 @@ func (app *appContext) AdminPage(gc *gin.Context) {
 		"email_enabled":    emailEnabled,
 		"telegram_enabled": telegramEnabled,
 		"discord_enabled":  discordEnabled,
+		"matrix_enabled":   matrixEnabled,
 		"notifications":    notificationsEnabled,
 		"version":          version,
 		"commit":           commit,
@@ -295,6 +296,7 @@ func (app *appContext) InviteProxy(gc *gin.Context) {
 		"langName":          lang,
 		"telegramEnabled":   telegramEnabled,
 		"discordEnabled":    discordEnabled,
+		"matrixEnabled":     matrixEnabled,
 	}
 	if telegramEnabled {
 		data["telegramPIN"] = app.telegram.NewAuthToken()
@@ -302,6 +304,10 @@ func (app *appContext) InviteProxy(gc *gin.Context) {
 		data["telegramURL"] = app.telegram.link
 		data["telegramRequired"] = app.config.Section("telegram").Key("required").MustBool(false)
 	}
+	if matrixEnabled {
+		data["matrixRequired"] = app.config.Section("matrix").Key("required").MustBool(false)
+		data["matrixUser"] = app.matrix.userID
+	}
 	if discordEnabled {
 		data["discordPIN"] = app.discord.NewAuthToken()
 		data["discordUsername"] = app.discord.username