finish backend of custom emails

biggest bodge i've ever done but it works i guess.

api.go

@@ -516,7 +516,7 @@ func (app *appContext) Announce(gc *gin.Context) {
 		}
 		addresses = append(addresses, addr.(string))
 	}
-	msg, err := app.email.constructAnnouncement(req.Subject, req.Message, app)
+	msg, err := app.email.constructTemplate(req.Subject, req.Message, app)
 	if err != nil {
 		app.err.Printf("Failed to construct announcement emails: %s", err)
 		respondBool(500, false, gc)
@@ -1286,9 +1286,99 @@ func (app *appContext) GetEmails(gc *gin.Context) {
 	})
 }
 
+// @Summary Sets the corresponding custom email.
+// @Produce json
+// @Param customEmail body customEmail true "Content = email (in markdown)."
+// @Success 200 {object} boolResponse
+// @Failure 400 {object} boolResponse
+// @Failure 500 {object} boolResponse
+// @Router /config/emails/{id} [post]
+// @tags Configuration
+func (app *appContext) SetEmail(gc *gin.Context) {
+	var req customEmail
+	gc.BindJSON(&req)
+	id := gc.Param("id")
+	if req.Content == "" {
+		respondBool(400, false, gc)
+		return
+	}
+	if id == "UserCreated" {
+		app.storage.customEmails.UserCreated.Content = req.Content
+		app.storage.customEmails.UserCreated.Enabled = true
+	} else if id == "InviteExpiry" {
+		app.storage.customEmails.InviteExpiry.Content = req.Content
+		app.storage.customEmails.InviteExpiry.Enabled = true
+	} else if id == "PasswordReset" {
+		app.storage.customEmails.PasswordReset.Content = req.Content
+		app.storage.customEmails.PasswordReset.Enabled = true
+	} else if id == "UserDeleted" {
+		app.storage.customEmails.UserDeleted.Content = req.Content
+		app.storage.customEmails.UserDeleted.Enabled = true
+	} else if id == "InviteEmail" {
+		app.storage.customEmails.InviteEmail.Content = req.Content
+		app.storage.customEmails.InviteEmail.Enabled = true
+	} else if id == "WelcomeEmail" {
+		app.storage.customEmails.WelcomeEmail.Content = req.Content
+		app.storage.customEmails.WelcomeEmail.Enabled = true
+	} else if id == "EmailConfirmation" {
+		app.storage.customEmails.EmailConfirmation.Content = req.Content
+		app.storage.customEmails.EmailConfirmation.Enabled = true
+	} else {
+		respondBool(400, false, gc)
+		return
+	}
+	if app.storage.storeCustomEmails() != nil {
+		respondBool(500, false, gc)
+		return
+	}
+	respondBool(200, true, gc)
+}
+
+// @Summary Enable/Disable custom email.
+// @Produce json
+// @Success 200 {object} boolResponse
+// @Failure 400 {object} boolResponse
+// @Failure 500 {object} boolResponse
+// @Router /config/emails/{id}/{enable/disable} [post]
+// @tags Configuration
+func (app *appContext) SetEmailState(gc *gin.Context) {
+	id := gc.Param("id")
+	s := gc.Param("state")
+	enabled := false
+	if s == "enable" {
+		enabled = true
+	} else if s != "disable" {
+		respondBool(400, false, gc)
+	}
+	if id == "UserCreated" {
+		app.storage.customEmails.UserCreated.Enabled = enabled
+	} else if id == "InviteExpiry" {
+		app.storage.customEmails.InviteExpiry.Enabled = enabled
+	} else if id == "PasswordReset" {
+		app.storage.customEmails.PasswordReset.Enabled = enabled
+	} else if id == "UserDeleted" {
+		app.storage.customEmails.UserDeleted.Enabled = enabled
+	} else if id == "InviteEmail" {
+		app.storage.customEmails.InviteEmail.Enabled = enabled
+	} else if id == "WelcomeEmail" {
+		app.storage.customEmails.WelcomeEmail.Enabled = enabled
+	} else if id == "EmailConfirmation" {
+		app.storage.customEmails.EmailConfirmation.Enabled = enabled
+	} else {
+		respondBool(400, false, gc)
+		return
+	}
+	if app.storage.storeCustomEmails() != nil {
+		respondBool(500, false, gc)
+		return
+	}
+	respondBool(200, true, gc)
+}
+
 // @Summary Returns the boilerplate email and list of used variables in it.
 // @Produce json
-// @Success 200 {object} emailDTO
+// @Success 200 {object} customEmail
+// @Failure 400 {object} boolResponse
 // @Failure 500 {object} boolResponse
 // @Router /config/emails/{id} [get]
 // @tags Configuration
@@ -1297,78 +1387,119 @@ func (app *appContext) GetEmail(gc *gin.Context) {
 	var content string
 	var err error
 	var msg *Email
+	var variables []string
+	var writeVars func(variables []string)
+	newEmail := false
 	if id == "UserCreated" {
-		content = app.storage.customEmails.UserCreated
+		content = app.storage.customEmails.UserCreated.Content
 		if content == "" {
+			newEmail = true
 			msg, err = app.email.constructCreated("", "", "", Invite{}, app, true)
 			content = msg.text
+		} else {
+			variables = app.storage.customEmails.UserCreated.Variables
 		}
+		writeVars = func(variables []string) { app.storage.customEmails.UserCreated.Variables = variables }
 		// app.storage.customEmails.UserCreated = content
 	} else if id == "InviteExpiry" {
-		content = app.storage.customEmails.InviteExpiry
+		content = app.storage.customEmails.InviteExpiry.Content
 		if content == "" {
+			newEmail = true
 			msg, err = app.email.constructExpiry("", Invite{}, app, true)
 			content = msg.text
+		} else {
+			variables = app.storage.customEmails.InviteExpiry.Variables
 		}
+		writeVars = func(variables []string) { app.storage.customEmails.InviteExpiry.Variables = variables }
 		// app.storage.customEmails.InviteExpiry = content
 	} else if id == "PasswordReset" {
-		content = app.storage.customEmails.PasswordReset
+		content = app.storage.customEmails.PasswordReset.Content
 		if content == "" {
+			newEmail = true
 			msg, err = app.email.constructReset(PasswordReset{}, app, true)
 			content = msg.text
+		} else {
+			variables = app.storage.customEmails.PasswordReset.Variables
 		}
+		writeVars = func(variables []string) { app.storage.customEmails.PasswordReset.Variables = variables }
 		// app.storage.customEmails.PasswordReset = content
 	} else if id == "UserDeleted" {
-		content = app.storage.customEmails.UserDeleted
+		content = app.storage.customEmails.UserDeleted.Content
 		if content == "" {
+			newEmail = true
 			msg, err = app.email.constructDeleted("", app, true)
 			content = msg.text
+		} else {
+			variables = app.storage.customEmails.UserDeleted.Variables
 		}
+		writeVars = func(variables []string) { app.storage.customEmails.UserDeleted.Variables = variables }
 		// app.storage.customEmails.UserDeleted = content
 	} else if id == "InviteEmail" {
-		content = app.storage.customEmails.InviteEmail
+		content = app.storage.customEmails.InviteEmail.Content
 		if content == "" {
+			newEmail = true
 			msg, err = app.email.constructInvite("", Invite{}, app, true)
 			content = msg.text
+		} else {
+			variables = app.storage.customEmails.InviteEmail.Variables
 		}
+		writeVars = func(variables []string) { app.storage.customEmails.InviteEmail.Variables = variables }
 		// app.storage.customEmails.InviteEmail = content
 	} else if id == "WelcomeEmail" {
-		content = app.storage.customEmails.WelcomeEmail
+		content = app.storage.customEmails.WelcomeEmail.Content
 		if content == "" {
+			newEmail = true
 			msg, err = app.email.constructWelcome("", app, true)
 			content = msg.text
+		} else {
+			variables = app.storage.customEmails.WelcomeEmail.Variables
 		}
+		writeVars = func(variables []string) { app.storage.customEmails.WelcomeEmail.Variables = variables }
 		// app.storage.customEmails.WelcomeEmail = content
 	} else if id == "EmailConfirmation" {
-		content = app.storage.customEmails.EmailConfirmation
+		content = app.storage.customEmails.EmailConfirmation.Content
 		if content == "" {
+			newEmail = true
 			msg, err = app.email.constructConfirmation("", "", "", app, true)
 			content = msg.text
+		} else {
+			variables = app.storage.customEmails.EmailConfirmation.Variables
 		}
+		writeVars = func(variables []string) { app.storage.customEmails.EmailConfirmation.Variables = variables }
 		// app.storage.customEmails.EmailConfirmation = content
+	} else {
+		respondBool(400, false, gc)
+		return
 	}
 	if err != nil {
 		respondBool(500, false, gc)
 		return
 	}
-	variables := make([]string, strings.Count(content, "{"))
+	if newEmail {
-	i := 0
+		variables = make([]string, strings.Count(content, "{"))
-	found := false
+		i := 0
-	buf := ""
+		found := false
-	for _, c := range content {
+		buf := ""
-		if !found && c != '{' && c != '}' {
+		for _, c := range content {
-			continue
+			if !found && c != '{' && c != '}' {
-		}
+				continue
-		found = true
+			}
-		buf += string(c)
+			found = true
-		if c == '}' {
+			buf += string(c)
-			found = false
+			if c == '}' {
-			variables[i] = buf
+				found = false
-			buf = ""
+				variables[i] = buf
-			i++
+				buf = ""
+				i++
+			}
 		}
+		writeVars(variables)
 	}
-	gc.JSON(200, emailDTO{Content: content, Variables: variables})
+	if app.storage.storeCustomEmails() != nil {
+		respondBool(500, false, gc)
+		return
+	}
+	gc.JSON(200, customEmail{Content: content, Variables: variables})
 }
 
 // @Summary Logout by deleting refresh token from cookies.

config.go

@@ -33,10 +33,11 @@ func (app *appContext) loadConfig() error {
 
 	for _, key := range app.config.Section("files").Keys() {
 		if name := key.Name(); name != "html_templates" && name != "lang_files" {
+			fmt.Println(name)
 			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"} {
+	for _, key := range []string{"user_configuration", "user_displayprefs", "user_profiles", "ombi_template", "invites", "emails", "user_template", "custom_emails"} {
 		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(""), "/")

email.go

@@ -222,6 +222,7 @@ func (emailer *Emailer) constructConfirmation(code, username, key string, app *a
 		"ifItWasNotYou": emailer.lang.Strings.get("ifItWasNotYou"),
 		"confirmEmail":  emailer.lang.EmailConfirmation.get("confirmEmail"),
 		"message":       "",
+		"username":      username,
 	}
 	if noSub {
 		template["helloUser"] = emailer.lang.Strings.get("helloUser")
@@ -237,14 +238,25 @@ func (emailer *Emailer) constructConfirmation(code, username, key string, app *a
 		template["confirmationURL"] = inviteLink
 		template["message"] = message
 	}
-	email.html, email.text, err = emailer.construct(app, "email_confirmation", "email_", template)
+	if app.storage.customEmails.EmailConfirmation.Enabled {
+		content := app.storage.customEmails.EmailConfirmation.Content
+		for _, v := range app.storage.customEmails.EmailConfirmation.Variables {
+			replaceWith, ok := template[v[1:len(v)-1]]
+			if ok {
+				content = strings.ReplaceAll(content, v, replaceWith.(string))
+			}
+		}
+		email, err = emailer.constructTemplate(email.subject, content, app)
+	} else {
+		email.html, email.text, err = emailer.construct(app, "email_confirmation", "email_", template)
+	}
 	if err != nil {
 		return nil, err
 	}
 	return email, nil
 }
 
-func (emailer *Emailer) constructAnnouncement(subject, md string, app *appContext) (*Email, error) {
+func (emailer *Emailer) constructTemplate(subject, md string, app *appContext) (*Email, error) {
 	email := &Email{subject: subject}
 	renderer := html.NewRenderer(html.RendererOptions{Flags: html.Smartypants})
 	html := markdown.ToHTML([]byte(md), nil, renderer)
@@ -277,6 +289,9 @@ func (emailer *Emailer) constructInvite(code string, invite Invite, app *appCont
 		"toJoin":             emailer.lang.InviteEmail.get("toJoin"),
 		"linkButton":         emailer.lang.InviteEmail.get("linkButton"),
 		"message":            "",
+		"date":               d,
+		"time":               t,
+		"expiresInMinutes":   expiresIn,
 	}
 	if noSub {
 		template["inviteExpiry"] = emailer.lang.InviteEmail.get("inviteExpiry")
@@ -290,7 +305,18 @@ func (emailer *Emailer) constructInvite(code string, invite Invite, app *appCont
 		template["message"] = message
 	}
 	var err error
-	email.html, email.text, err = emailer.construct(app, "invite_emails", "email_", template)
+	if app.storage.customEmails.InviteEmail.Enabled {
+		content := app.storage.customEmails.InviteEmail.Content
+		for _, v := range app.storage.customEmails.InviteEmail.Variables {
+			replaceWith, ok := template[v[1:len(v)-1]]
+			if ok {
+				content = strings.ReplaceAll(content, v, replaceWith.(string))
+			}
+		}
+		email, err = emailer.constructTemplate(email.subject, content, app)
+	} else {
+		email.html, email.text, err = emailer.construct(app, "invite_emails", "email_", template)
+	}
 	if err != nil {
 		return nil, err
 	}
@@ -305,14 +331,27 @@ func (emailer *Emailer) constructExpiry(code string, invite Invite, app *appCont
 	template := map[string]interface{}{
 		"inviteExpired":      emailer.lang.InviteExpiry.get("inviteExpired"),
 		"notificationNotice": emailer.lang.InviteExpiry.get("notificationNotice"),
+		"code":               "\"" + code + "\"",
+		"time":               expiry,
 	}
 	if noSub {
 		template["expiredAt"] = emailer.lang.InviteExpiry.get("expiredAt")
 	} else {
-		template["expiredAt"] = emailer.lang.InviteExpiry.template("expiredAt", tmpl{"code": "\"" + code + "\"", "time": expiry})
+		template["expiredAt"] = emailer.lang.InviteExpiry.template("expiredAt", tmpl{"code": template["code"].(string), "time": template["time"].(string)})
 	}
 	var err error
-	email.html, email.text, err = emailer.construct(app, "notifications", "expiry_", template)
+	if app.storage.customEmails.InviteExpiry.Enabled {
+		content := app.storage.customEmails.InviteExpiry.Content
+		for _, v := range app.storage.customEmails.InviteExpiry.Variables {
+			replaceWith, ok := template[v[1:len(v)-1]]
+			if ok {
+				content = strings.ReplaceAll(content, v, replaceWith.(string))
+			}
+		}
+		email, err = emailer.constructTemplate(email.subject, content, app)
+	} else {
+		email.html, email.text, err = emailer.construct(app, "notifications", "expiry_", template)
+	}
 	if err != nil {
 		return nil, err
 	}
@@ -328,6 +367,7 @@ func (emailer *Emailer) constructCreated(code, username, address string, invite
 		"addressString":      emailer.lang.Strings.get("emailAddress"),
 		"timeString":         emailer.lang.UserCreated.get("time"),
 		"notificationNotice": "",
+		"code":               "\"" + code + "\"",
 	}
 	if noSub {
 		template["aUserWasCreated"] = emailer.lang.UserCreated.get("aUserWasCreated")
@@ -343,14 +383,25 @@ func (emailer *Emailer) constructCreated(code, username, address string, invite
 		} else {
 			tplAddress = address
 		}
-		template["aUserWasCreated"] = emailer.lang.UserCreated.template("aUserWasCreated", tmpl{"code": "\"" + code + "\""})
+		template["aUserWasCreated"] = emailer.lang.UserCreated.template("aUserWasCreated", tmpl{"code": template["code"].(string)})
 		template["name"] = username
 		template["address"] = tplAddress
 		template["time"] = created
 		template["notificationNotice"] = emailer.lang.UserCreated.get("notificationNotice")
 	}
 	var err error
-	email.html, email.text, err = emailer.construct(app, "notifications", "created_", template)
+	if app.storage.customEmails.UserCreated.Enabled {
+		content := app.storage.customEmails.UserCreated.Content
+		for _, v := range app.storage.customEmails.UserCreated.Variables {
+			replaceWith, ok := template[v[1:len(v)-1]]
+			if ok {
+				content = strings.ReplaceAll(content, v, replaceWith.(string))
+			}
+		}
+		email, err = emailer.constructTemplate(email.subject, content, app)
+	} else {
+		email.html, email.text, err = emailer.construct(app, "notifications", "created_", template)
+	}
 	if err != nil {
 		return nil, err
 	}
@@ -369,6 +420,10 @@ func (emailer *Emailer) constructReset(pwr PasswordReset, app *appContext, noSub
 		"ifItWasNotYou":            emailer.lang.Strings.get("ifItWasNotYou"),
 		"pinString":                emailer.lang.PasswordReset.get("pin"),
 		"message":                  "",
+		"username":                 pwr.Username,
+		"date":                     d,
+		"time":                     t,
+		"expiresInMinutes":         expiresIn,
 	}
 	if noSub {
 		template["helloUser"] = emailer.lang.Strings.get("helloUser")
@@ -384,7 +439,18 @@ func (emailer *Emailer) constructReset(pwr PasswordReset, app *appContext, noSub
 		template["message"] = message
 	}
 	var err error
-	email.html, email.text, err = emailer.construct(app, "password_resets", "email_", template)
+	if app.storage.customEmails.PasswordReset.Enabled {
+		content := app.storage.customEmails.PasswordReset.Content
+		for _, v := range app.storage.customEmails.PasswordReset.Variables {
+			replaceWith, ok := template[v[1:len(v)-1]]
+			if ok {
+				content = strings.ReplaceAll(content, v, replaceWith.(string))
+			}
+		}
+		email, err = emailer.constructTemplate(email.subject, content, app)
+	} else {
+		email.html, email.text, err = emailer.construct(app, "password_resets", "email_", template)
+	}
 	if err != nil {
 		return nil, err
 	}
@@ -410,7 +476,18 @@ func (emailer *Emailer) constructDeleted(reason string, app *appContext, noSub b
 		template["message"] = app.config.Section("email").Key("message").String()
 	}
 	var err error
-	email.html, email.text, err = emailer.construct(app, "deletion", "email_", template)
+	if app.storage.customEmails.UserDeleted.Enabled {
+		content := app.storage.customEmails.UserDeleted.Content
+		for _, v := range app.storage.customEmails.UserDeleted.Variables {
+			replaceWith, ok := template[v[1:len(v)-1]]
+			if ok {
+				content = strings.ReplaceAll(content, v, replaceWith.(string))
+			}
+		}
+		email, err = emailer.constructTemplate(email.subject, content, app)
+	} else {
+		email.html, email.text, err = emailer.construct(app, "deletion", "email_", template)
+	}
 	if err != nil {
 		return nil, err
 	}
@@ -439,7 +516,18 @@ func (emailer *Emailer) constructWelcome(username string, app *appContext, noSub
 		template["message"] = app.config.Section("email").Key("message").String()
 	}
 	var err error
-	email.html, email.text, err = emailer.construct(app, "welcome_email", "email_", template)
+	if app.storage.customEmails.WelcomeEmail.Enabled {
+		content := app.storage.customEmails.WelcomeEmail.Content
+		for _, v := range app.storage.customEmails.WelcomeEmail.Variables {
+			replaceWith, ok := template[v[1:len(v)-1]]
+			if ok {
+				content = strings.ReplaceAll(content, v, replaceWith.(string))
+			}
+		}
+		email, err = emailer.constructTemplate(email.subject, content, app)
+	} else {
+		email.html, email.text, err = emailer.construct(app, "welcome_email", "email_", template)
+	}
 	if err != nil {
 		return nil, err
 	}
@@ -448,5 +536,6 @@ func (emailer *Emailer) constructWelcome(username string, app *appContext, noSub
 
 // calls the send method in the underlying emailClient.
 func (emailer *Emailer) send(email *Email, address ...string) error {
+	fmt.Printf("%+v\n", email)
 	return emailer.sender.send(emailer.fromName, emailer.fromAddr, email, address...)
 }

lang.go

@@ -120,14 +120,18 @@ func (ls *setupLangs) getOptions() [][2]string {
 type langSection map[string]string
 type tmpl map[string]string
 
-func (el langSection) template(field string, vals tmpl) string {
+func templateString(text string, vals tmpl) string {
-	text := el.get(field)
 	for key, val := range vals {
 		text = strings.ReplaceAll(text, "{"+key+"}", val)
 	}
 	return text
 }
 
+func (el langSection) template(field string, vals tmpl) string {
+	text := el.get(field)
+	return templateString(text, vals)
+}
+
 func (el langSection) format(field string, vals ...string) string {
 	text := el.get(field)
 	for _, val := range vals {

models.go

@@ -176,10 +176,6 @@ type settings struct {
 type langDTO map[string]string
 
 type emailListDTO map[string]string
-type emailDTO struct {
-	Content   string   `json:"content"`
-	Variables []string `json:"Variables"`
-}
 
 type emailSetDTO struct {
 	Content string `json:"content"`

router.go

@@ -141,6 +141,8 @@ func (app *appContext) loadRoutes(router *gin.Engine) {
 		api.POST(p+"/users/announce", app.Announce)
 		api.GET(p+"/config/emails", app.GetEmails)
 		api.GET(p+"/config/emails/:id", app.GetEmail)
+		api.POST(p+"/config/emails/:id", app.SetEmail)
+		api.POST(p+"/config/emails/:id/:state", app.SetEmailState)
 		api.GET(p+"/config", app.GetConfig)
 		api.POST(p+"/config", app.ModifyConfig)
 		api.POST(p+"/restart", app.restart)

storage.go

@@ -27,13 +27,19 @@ type Storage struct {
 }
 
 type customEmails struct {
-	UserCreated       string `json:"userCreated"`
+	UserCreated       customEmail `json:"userCreated"`
-	InviteExpiry      string `json:"inviteExpiry"`
+	InviteExpiry      customEmail `json:"inviteExpiry"`
-	PasswordReset     string `json:"passwordReset"`
+	PasswordReset     customEmail `json:"passwordReset"`
-	UserDeleted       string `json:"userDeleted"`
+	UserDeleted       customEmail `json:"userDeleted"`
-	InviteEmail       string `json:"inviteEmail"`
+	InviteEmail       customEmail `json:"inviteEmail"`
-	WelcomeEmail      string `json:"welcomeEmail"`
+	WelcomeEmail      customEmail `json:"welcomeEmail"`
-	EmailConfirmation string `json:"emailConfirmation"`
+	EmailConfirmation customEmail `json:"emailConfirmation"`
+}
+
+type customEmail struct {
+	Enabled   bool     `json:"enabled,omitempty"`
+	Content   string   `json:"content"`
+	Variables []string `json:"variables,omitempty"`
 }
 
 // timePattern: %Y-%m-%dT%H:%M:%S.%f