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jfa-go/email.go
Harvey Tindall 9693ce3dcd
settings: add redundant URL base for pwr
having it under "Invite Emails" when they weren't in use was confusing.
If only one is set in the config file, it'll be used for both.
2021-07-27 16:53:16 +01:00

865 lines
28 KiB
Go

package main
import (
"bytes"
"context"
"crypto/tls"
"crypto/x509"
"errors"
"fmt"
"html/template"
"io"
"io/fs"
"net/smtp"
"os"
"strconv"
"strings"
"sync"
textTemplate "text/template"
"time"
"github.com/gomarkdown/markdown"
"github.com/gomarkdown/markdown/html"
"github.com/itchyny/timefmt-go"
jEmail "github.com/jordan-wright/email"
"github.com/mailgun/mailgun-go/v4"
)
var renderer = html.NewRenderer(html.RendererOptions{Flags: html.Smartypants})
// EmailClient implements email sending, right now via smtp, mailgun or a dummy client.
type EmailClient interface {
Send(fromName, fromAddr string, message *Message, address ...string) error
}
type DummyClient struct{}
func (dc *DummyClient) Send(fromName, fromAddr string, email *Message, address ...string) error {
fmt.Printf("FROM: %s <%s>\nTO: %s\nTEXT: %s\n", fromName, fromAddr, strings.Join(address, ", "), email.Text)
return nil
}
// Mailgun client implements EmailClient.
type Mailgun struct {
client *mailgun.MailgunImpl
}
func (mg *Mailgun) Send(fromName, fromAddr string, email *Message, address ...string) error {
message := mg.client.NewMessage(
fmt.Sprintf("%s <%s>", fromName, fromAddr),
email.Subject,
email.Text,
)
for _, a := range address {
// Adding variable tells mailgun to do a batch send, so users don't see other recipients.
message.AddRecipientAndVariables(a, map[string]interface{}{"unique_id": a})
}
message.SetHtml(email.HTML)
ctx, cancel := context.WithTimeout(context.Background(), time.Second*10)
defer cancel()
_, _, err := mg.client.Send(ctx, message)
return err
}
// SMTP supports SSL/TLS and STARTTLS; implements EmailClient.
type SMTP struct {
sslTLS bool
server string
port int
auth smtp.Auth
tlsConfig *tls.Config
}
func (sm *SMTP) Send(fromName, fromAddr string, email *Message, address ...string) error {
server := fmt.Sprintf("%s:%d", sm.server, sm.port)
from := fmt.Sprintf("%s <%s>", fromName, fromAddr)
var wg sync.WaitGroup
var err error
for _, addr := range address {
wg.Add(1)
go func(addr string) {
defer wg.Done()
e := jEmail.NewEmail()
e.Subject = email.Subject
e.From = from
e.Text = []byte(email.Text)
e.HTML = []byte(email.HTML)
e.To = []string{addr}
if sm.sslTLS {
err = e.SendWithTLS(server, sm.auth, sm.tlsConfig)
} else {
err = e.SendWithStartTLS(server, sm.auth, sm.tlsConfig)
}
}(addr)
}
wg.Wait()
return err
}
// Emailer contains the email sender, translations, and methods to construct messages.
type Emailer struct {
fromAddr, fromName string
lang emailLang
sender EmailClient
}
// Message stores content.
type Message struct {
Subject string `json:"subject"`
HTML string `json:"html"`
Text string `json:"text"`
Markdown string `json:"markdown"`
}
func (emailer *Emailer) formatExpiry(expiry time.Time, tzaware bool, datePattern, timePattern string) (d, t, expiresIn string) {
d = timefmt.Format(expiry, datePattern)
t = timefmt.Format(expiry, timePattern)
currentTime := time.Now()
if tzaware {
currentTime = currentTime.UTC()
}
_, _, days, hours, minutes, _ := timeDiff(expiry, currentTime)
if days != 0 {
expiresIn += strconv.Itoa(days) + "d "
}
if hours != 0 {
expiresIn += strconv.Itoa(hours) + "h "
}
if minutes != 0 {
expiresIn += strconv.Itoa(minutes) + "m "
}
expiresIn = strings.TrimSuffix(expiresIn, " ")
return
}
// NewEmailer configures and returns a new emailer.
func NewEmailer(app *appContext) *Emailer {
emailer := &Emailer{
fromAddr: app.config.Section("email").Key("address").String(),
fromName: app.config.Section("email").Key("from").String(),
lang: app.storage.lang.Email[app.storage.lang.chosenEmailLang],
}
method := app.config.Section("email").Key("method").String()
if method == "smtp" {
sslTLS := false
if app.config.Section("smtp").Key("encryption").String() == "ssl_tls" {
sslTLS = true
}
username := ""
if u := app.config.Section("smtp").Key("username").MustString(""); u != "" {
username = u
} else {
username = emailer.fromAddr
}
err := emailer.NewSMTP(app.config.Section("smtp").Key("server").String(), app.config.Section("smtp").Key("port").MustInt(465), username, app.config.Section("smtp").Key("password").String(), sslTLS, app.config.Section("smtp").Key("ssl_cert").MustString(""))
if err != nil {
app.err.Printf("Error while initiating SMTP mailer: %v", err)
}
} else if method == "mailgun" {
emailer.NewMailgun(app.config.Section("mailgun").Key("api_url").String(), app.config.Section("mailgun").Key("api_key").String())
} else if method == "dummy" {
emailer.sender = &DummyClient{}
}
return emailer
}
// NewMailgun returns a Mailgun emailClient.
func (emailer *Emailer) NewMailgun(url, key string) {
sender := &Mailgun{
client: mailgun.NewMailgun(strings.Split(emailer.fromAddr, "@")[1], key),
}
// Mailgun client takes the base url, so we need to trim off the end (e.g 'v3/messages')
if strings.Contains(url, "messages") {
url = url[0:strings.LastIndex(url, "/")]
url = url[0:strings.LastIndex(url, "/")]
}
sender.client.SetAPIBase(url)
emailer.sender = sender
}
// NewSMTP returns an SMTP emailClient.
func (emailer *Emailer) NewSMTP(server string, port int, username, password string, sslTLS bool, certPath string) (err error) {
// x509.SystemCertPool is unavailable on windows
if PLATFORM == "windows" {
emailer.sender = &SMTP{
auth: smtp.PlainAuth("", username, password, server),
server: server,
port: port,
sslTLS: sslTLS,
tlsConfig: &tls.Config{
InsecureSkipVerify: false,
ServerName: server,
},
}
return
}
rootCAs, err := x509.SystemCertPool()
if rootCAs == nil || err != nil {
rootCAs = x509.NewCertPool()
}
if certPath != "" {
var cert []byte
cert, err = os.ReadFile(certPath)
if rootCAs.AppendCertsFromPEM(cert) == false {
err = errors.New("Failed to append cert to pool")
}
}
emailer.sender = &SMTP{
auth: smtp.PlainAuth("", username, password, server),
server: server,
port: port,
sslTLS: sslTLS,
tlsConfig: &tls.Config{
InsecureSkipVerify: false,
ServerName: server,
RootCAs: rootCAs,
},
}
return
}
type templ interface {
Execute(wr io.Writer, data interface{}) error
}
func (emailer *Emailer) construct(app *appContext, section, keyFragment string, data map[string]interface{}) (html, text, markdown string, err error) {
var tpl templ
if substituteStrings == "" {
data["jellyfin"] = "Jellyfin"
} else {
data["jellyfin"] = substituteStrings
}
var keys []string
plaintext := app.config.Section("email").Key("plaintext").MustBool(false)
if plaintext {
if telegramEnabled || discordEnabled {
keys = []string{"text"}
text, markdown = "", ""
} else {
keys = []string{"text"}
text = ""
}
} else {
if telegramEnabled || discordEnabled {
keys = []string{"html", "text", "markdown"}
} else {
keys = []string{"html", "text"}
}
}
for _, key := range keys {
var filesystem fs.FS
var fpath string
if key == "markdown" {
filesystem, fpath = app.GetPath(section, keyFragment+"text")
} else {
filesystem, fpath = app.GetPath(section, keyFragment+key)
}
if key == "html" {
tpl, err = template.ParseFS(filesystem, fpath)
} else {
tpl, err = textTemplate.ParseFS(filesystem, fpath)
}
if err != nil {
return
}
// For constructTemplate, if "md" is found in data it's used in stead of "text".
foundMarkdown := false
if key == "markdown" {
_, foundMarkdown = data["md"]
if foundMarkdown {
data["plaintext"], data["md"] = data["md"], data["plaintext"]
}
}
var tplData bytes.Buffer
err = tpl.Execute(&tplData, data)
if err != nil {
return
}
if foundMarkdown {
data["plaintext"], data["md"] = data["md"], data["plaintext"]
}
if key == "html" {
html = tplData.String()
} else if key == "text" {
text = tplData.String()
} else {
markdown = tplData.String()
}
}
return
}
func (emailer *Emailer) confirmationValues(code, username, key string, app *appContext, noSub bool) map[string]interface{} {
template := map[string]interface{}{
"clickBelow": emailer.lang.EmailConfirmation.get("clickBelow"),
"ifItWasNotYou": emailer.lang.Strings.get("ifItWasNotYou"),
"confirmEmail": emailer.lang.EmailConfirmation.get("confirmEmail"),
"message": "",
"username": username,
}
if noSub {
template["helloUser"] = emailer.lang.Strings.get("helloUser")
empty := []string{"confirmationURL"}
for _, v := range empty {
template[v] = "{" + v + "}"
}
} else {
message := app.config.Section("messages").Key("message").String()
inviteLink := app.config.Section("invite_emails").Key("url_base").String()
inviteLink = fmt.Sprintf("%s/%s?key=%s", inviteLink, code, key)
template["helloUser"] = emailer.lang.Strings.template("helloUser", tmpl{"username": username})
template["confirmationURL"] = inviteLink
template["message"] = message
}
return template
}
func (emailer *Emailer) constructConfirmation(code, username, key string, app *appContext, noSub bool) (*Message, error) {
email := &Message{
Subject: app.config.Section("email_confirmation").Key("subject").MustString(emailer.lang.EmailConfirmation.get("title")),
}
var err error
template := emailer.confirmationValues(code, username, key, app, noSub)
if app.storage.customEmails.EmailConfirmation.Enabled {
content := templateEmail(
app.storage.customEmails.EmailConfirmation.Content,
app.storage.customEmails.EmailConfirmation.Variables,
nil,
template,
)
email, err = emailer.constructTemplate(email.Subject, content, app)
} else {
email.HTML, email.Text, email.Markdown, err = emailer.construct(app, "email_confirmation", "email_", template)
}
if err != nil {
return nil, err
}
return email, nil
}
// username is optional, but should only be passed once.
func (emailer *Emailer) constructTemplate(subject, md string, app *appContext, username ...string) (*Message, error) {
if len(username) != 0 {
md = templateEmail(md, []string{"{username}"}, nil, map[string]interface{}{"username": username[0]})
subject = templateEmail(subject, []string{"{username}"}, nil, map[string]interface{}{"username": username[0]})
}
email := &Message{Subject: subject}
html := markdown.ToHTML([]byte(md), nil, renderer)
text := stripMarkdown(md)
message := app.config.Section("messages").Key("message").String()
var err error
data := map[string]interface{}{
"text": template.HTML(html),
"plaintext": text,
"message": message,
"md": md,
}
if len(username) != 0 {
data["username"] = username[0]
}
email.HTML, email.Text, email.Markdown, err = emailer.construct(app, "template_email", "email_", data)
if err != nil {
return nil, err
}
return email, nil
}
func (emailer *Emailer) inviteValues(code string, invite Invite, app *appContext, noSub bool) map[string]interface{} {
expiry := invite.ValidTill
d, t, expiresIn := emailer.formatExpiry(expiry, false, app.datePattern, app.timePattern)
message := app.config.Section("messages").Key("message").String()
inviteLink := app.config.Section("invite_emails").Key("url_base").String()
if !strings.HasSuffix(inviteLink, "/invite") {
inviteLink += "/invite"
}
inviteLink = fmt.Sprintf("%s/%s", inviteLink, code)
template := map[string]interface{}{
"hello": emailer.lang.InviteEmail.get("hello"),
"youHaveBeenInvited": emailer.lang.InviteEmail.get("youHaveBeenInvited"),
"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")
empty := []string{"inviteURL"}
for _, v := range empty {
template[v] = "{" + v + "}"
}
} else {
template["inviteExpiry"] = emailer.lang.InviteEmail.template("inviteExpiry", tmpl{"date": d, "time": t, "expiresInMinutes": expiresIn})
template["inviteURL"] = inviteLink
template["message"] = message
}
return template
}
func (emailer *Emailer) constructInvite(code string, invite Invite, app *appContext, noSub bool) (*Message, error) {
email := &Message{
Subject: app.config.Section("invite_emails").Key("subject").MustString(emailer.lang.InviteEmail.get("title")),
}
template := emailer.inviteValues(code, invite, app, noSub)
var err error
if app.storage.customEmails.InviteEmail.Enabled {
content := templateEmail(
app.storage.customEmails.InviteEmail.Content,
app.storage.customEmails.InviteEmail.Variables,
nil,
template,
)
email, err = emailer.constructTemplate(email.Subject, content, app)
} else {
email.HTML, email.Text, email.Markdown, err = emailer.construct(app, "invite_emails", "email_", template)
}
if err != nil {
return nil, err
}
return email, nil
}
func (emailer *Emailer) expiryValues(code string, invite Invite, app *appContext, noSub bool) map[string]interface{} {
expiry := app.formatDatetime(invite.ValidTill)
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": template["code"].(string), "time": template["time"].(string)})
}
return template
}
func (emailer *Emailer) constructExpiry(code string, invite Invite, app *appContext, noSub bool) (*Message, error) {
email := &Message{
Subject: emailer.lang.InviteExpiry.get("title"),
}
var err error
template := emailer.expiryValues(code, invite, app, noSub)
if app.storage.customEmails.InviteExpiry.Enabled {
content := templateEmail(
app.storage.customEmails.InviteExpiry.Content,
app.storage.customEmails.InviteExpiry.Variables,
nil,
template,
)
email, err = emailer.constructTemplate(email.Subject, content, app)
} else {
email.HTML, email.Text, email.Markdown, err = emailer.construct(app, "notifications", "expiry_", template)
}
if err != nil {
return nil, err
}
return email, nil
}
func (emailer *Emailer) createdValues(code, username, address string, invite Invite, app *appContext, noSub bool) map[string]interface{} {
template := map[string]interface{}{
"nameString": emailer.lang.Strings.get("name"),
"addressString": emailer.lang.Strings.get("emailAddress"),
"timeString": emailer.lang.UserCreated.get("time"),
"notificationNotice": "",
"code": "\"" + code + "\"",
}
if noSub {
template["aUserWasCreated"] = emailer.lang.UserCreated.get("aUserWasCreated")
empty := []string{"name", "address", "time"}
for _, v := range empty {
template[v] = "{" + v + "}"
}
} else {
created := app.formatDatetime(invite.Created)
var tplAddress string
if app.config.Section("email").Key("no_username").MustBool(false) {
tplAddress = "n/a"
} else {
tplAddress = address
}
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")
}
return template
}
func (emailer *Emailer) constructCreated(code, username, address string, invite Invite, app *appContext, noSub bool) (*Message, error) {
email := &Message{
Subject: emailer.lang.UserCreated.get("title"),
}
template := emailer.createdValues(code, username, address, invite, app, noSub)
var err error
if app.storage.customEmails.UserCreated.Enabled {
content := templateEmail(
app.storage.customEmails.UserCreated.Content,
app.storage.customEmails.UserCreated.Variables,
nil,
template,
)
email, err = emailer.constructTemplate(email.Subject, content, app)
} else {
email.HTML, email.Text, email.Markdown, err = emailer.construct(app, "notifications", "created_", template)
}
if err != nil {
return nil, err
}
return email, nil
}
func (emailer *Emailer) resetValues(pwr PasswordReset, app *appContext, noSub bool) map[string]interface{} {
d, t, expiresIn := emailer.formatExpiry(pwr.Expiry, true, app.datePattern, app.timePattern)
message := app.config.Section("messages").Key("message").String()
template := map[string]interface{}{
"someoneHasRequestedReset": emailer.lang.PasswordReset.get("someoneHasRequestedReset"),
"ifItWasNotYou": emailer.lang.Strings.get("ifItWasNotYou"),
"pinString": emailer.lang.PasswordReset.get("pin"),
"link_reset": false,
"message": "",
"username": pwr.Username,
"date": d,
"time": t,
"expiresInMinutes": expiresIn,
}
linkResetEnabled := app.config.Section("password_resets").Key("link_reset").MustBool(false)
if linkResetEnabled {
template["ifItWasYou"] = emailer.lang.PasswordReset.get("ifItWasYouLink")
} else {
template["ifItWasYou"] = emailer.lang.PasswordReset.get("ifItWasYou")
}
if noSub {
template["helloUser"] = emailer.lang.Strings.get("helloUser")
template["codeExpiry"] = emailer.lang.PasswordReset.get("codeExpiry")
empty := []string{"pin"}
for _, v := range empty {
template[v] = "{" + v + "}"
}
} else {
template["helloUser"] = emailer.lang.Strings.template("helloUser", tmpl{"username": pwr.Username})
template["codeExpiry"] = emailer.lang.PasswordReset.template("codeExpiry", tmpl{"date": d, "time": t, "expiresInMinutes": expiresIn})
url := app.config.Section("password_resets").Key("url_base").String()
if linkResetEnabled {
if url != "" {
// Strip /invite form end of this URL, ik its ugly.
template["link_reset"] = true
pinLink := fmt.Sprintf("%s/reset?pin=%s", url, pwr.Pin)
template["pin"] = pinLink
// Only used in html email.
template["pin_code"] = pwr.Pin
} else {
app.info.Println("Password Reset link disabled as no URL Base provided. Set in Settings > Password Resets.")
template["pin"] = pwr.Pin
}
} else {
template["pin"] = pwr.Pin
}
template["message"] = message
}
return template
}
func (emailer *Emailer) constructReset(pwr PasswordReset, app *appContext, noSub bool) (*Message, error) {
email := &Message{
Subject: app.config.Section("password_resets").Key("subject").MustString(emailer.lang.PasswordReset.get("title")),
}
template := emailer.resetValues(pwr, app, noSub)
var err error
if app.storage.customEmails.PasswordReset.Enabled {
content := templateEmail(
app.storage.customEmails.PasswordReset.Content,
app.storage.customEmails.PasswordReset.Variables,
nil,
template,
)
email, err = emailer.constructTemplate(email.Subject, content, app)
} else {
email.HTML, email.Text, email.Markdown, err = emailer.construct(app, "password_resets", "email_", template)
}
if err != nil {
return nil, err
}
return email, nil
}
func (emailer *Emailer) deletedValues(reason string, app *appContext, noSub bool) map[string]interface{} {
template := map[string]interface{}{
"yourAccountWas": emailer.lang.UserDeleted.get("yourAccountWasDeleted"),
"reasonString": emailer.lang.Strings.get("reason"),
"message": "",
}
if noSub {
empty := []string{"reason"}
for _, v := range empty {
template[v] = "{" + v + "}"
}
} else {
template["reason"] = reason
template["message"] = app.config.Section("messages").Key("message").String()
}
fmt.Println("TTTT", template)
return template
}
func (emailer *Emailer) constructDeleted(reason string, app *appContext, noSub bool) (*Message, error) {
email := &Message{
Subject: app.config.Section("deletion").Key("subject").MustString(emailer.lang.UserDeleted.get("title")),
}
var err error
template := emailer.deletedValues(reason, app, noSub)
if app.storage.customEmails.UserDeleted.Enabled {
content := templateEmail(
app.storage.customEmails.UserDeleted.Content,
app.storage.customEmails.UserDeleted.Variables,
nil,
template,
)
email, err = emailer.constructTemplate(email.Subject, content, app)
} else {
email.HTML, email.Text, email.Markdown, err = emailer.construct(app, "deletion", "email_", template)
}
if err != nil {
return nil, err
}
return email, nil
}
func (emailer *Emailer) disabledValues(reason string, app *appContext, noSub bool) map[string]interface{} {
template := map[string]interface{}{
"yourAccountWas": emailer.lang.UserDisabled.get("yourAccountWasDisabled"),
"reasonString": emailer.lang.Strings.get("reason"),
"message": "",
}
if noSub {
empty := []string{"reason"}
for _, v := range empty {
template[v] = "{" + v + "}"
}
} else {
template["reason"] = reason
template["message"] = app.config.Section("messages").Key("message").String()
}
return template
}
func (emailer *Emailer) constructDisabled(reason string, app *appContext, noSub bool) (*Message, error) {
email := &Message{
Subject: app.config.Section("disable_enable").Key("subject_disabled").MustString(emailer.lang.UserDisabled.get("title")),
}
var err error
template := emailer.disabledValues(reason, app, noSub)
if app.storage.customEmails.UserDisabled.Enabled {
content := templateEmail(
app.storage.customEmails.UserDisabled.Content,
app.storage.customEmails.UserDisabled.Variables,
nil,
template,
)
email, err = emailer.constructTemplate(email.Subject, content, app)
} else {
email.HTML, email.Text, email.Markdown, err = emailer.construct(app, "disable_enable", "disabled_", template)
}
if err != nil {
return nil, err
}
return email, nil
}
func (emailer *Emailer) enabledValues(reason string, app *appContext, noSub bool) map[string]interface{} {
template := map[string]interface{}{
"yourAccountWas": emailer.lang.UserEnabled.get("yourAccountWasEnabled"),
"reasonString": emailer.lang.Strings.get("reason"),
"message": "",
}
if noSub {
empty := []string{"reason"}
for _, v := range empty {
template[v] = "{" + v + "}"
}
} else {
template["reason"] = reason
template["message"] = app.config.Section("messages").Key("message").String()
}
return template
}
func (emailer *Emailer) constructEnabled(reason string, app *appContext, noSub bool) (*Message, error) {
email := &Message{
Subject: app.config.Section("disable_enable").Key("subject_enabled").MustString(emailer.lang.UserEnabled.get("title")),
}
var err error
template := emailer.enabledValues(reason, app, noSub)
if app.storage.customEmails.UserEnabled.Enabled {
content := templateEmail(
app.storage.customEmails.UserEnabled.Content,
app.storage.customEmails.UserEnabled.Variables,
nil,
template,
)
email, err = emailer.constructTemplate(email.Subject, content, app)
} else {
email.HTML, email.Text, email.Markdown, err = emailer.construct(app, "disable_enable", "enabled_", template)
}
if err != nil {
return nil, err
}
return email, nil
}
func (emailer *Emailer) welcomeValues(username string, expiry time.Time, app *appContext, noSub bool, custom bool) map[string]interface{} {
template := map[string]interface{}{
"welcome": emailer.lang.WelcomeEmail.get("welcome"),
"youCanLoginWith": emailer.lang.WelcomeEmail.get("youCanLoginWith"),
"jellyfinURLString": emailer.lang.WelcomeEmail.get("jellyfinURL"),
"usernameString": emailer.lang.Strings.get("username"),
"message": "",
"yourAccountWillExpire": "",
}
if noSub {
empty := []string{"jellyfinURL", "username", "yourAccountWillExpire"}
for _, v := range empty {
template[v] = "{" + v + "}"
}
} else {
template["jellyfinURL"] = app.config.Section("jellyfin").Key("public_server").String()
template["username"] = username
template["message"] = app.config.Section("messages").Key("message").String()
exp := app.formatDatetime(expiry)
if !expiry.IsZero() {
if custom {
template["yourAccountWillExpire"] = exp
} else if !expiry.IsZero() {
template["yourAccountWillExpire"] = emailer.lang.WelcomeEmail.template("yourAccountWillExpire", tmpl{
"date": exp,
})
}
}
}
return template
}
func (emailer *Emailer) constructWelcome(username string, expiry time.Time, app *appContext, noSub bool) (*Message, error) {
email := &Message{
Subject: app.config.Section("welcome_email").Key("subject").MustString(emailer.lang.WelcomeEmail.get("title")),
}
var err error
var template map[string]interface{}
if app.storage.customEmails.WelcomeEmail.Enabled {
template = emailer.welcomeValues(username, expiry, app, noSub, true)
} else {
template = emailer.welcomeValues(username, expiry, app, noSub, false)
}
if noSub {
template["yourAccountWillExpire"] = emailer.lang.WelcomeEmail.template("yourAccountWillExpire", tmpl{
"date": "{yourAccountWillExpire}",
})
}
if app.storage.customEmails.WelcomeEmail.Enabled {
content := templateEmail(
app.storage.customEmails.WelcomeEmail.Content,
app.storage.customEmails.WelcomeEmail.Variables,
app.storage.customEmails.WelcomeEmail.Conditionals,
template,
)
email, err = emailer.constructTemplate(email.Subject, content, app)
} else {
email.HTML, email.Text, email.Markdown, err = emailer.construct(app, "welcome_email", "email_", template)
}
if err != nil {
return nil, err
}
return email, nil
}
func (emailer *Emailer) userExpiredValues(app *appContext, noSub bool) map[string]interface{} {
template := map[string]interface{}{
"yourAccountHasExpired": emailer.lang.UserExpired.get("yourAccountHasExpired"),
"contactTheAdmin": emailer.lang.UserExpired.get("contactTheAdmin"),
"message": "",
}
if !noSub {
template["message"] = app.config.Section("messages").Key("message").String()
}
return template
}
func (emailer *Emailer) constructUserExpired(app *appContext, noSub bool) (*Message, error) {
email := &Message{
Subject: app.config.Section("user_expiry").Key("subject").MustString(emailer.lang.UserExpired.get("title")),
}
var err error
template := emailer.userExpiredValues(app, noSub)
if app.storage.customEmails.UserExpired.Enabled {
content := templateEmail(
app.storage.customEmails.UserExpired.Content,
app.storage.customEmails.UserExpired.Variables,
nil,
template,
)
email, err = emailer.constructTemplate(email.Subject, content, app)
} else {
email.HTML, email.Text, email.Markdown, err = emailer.construct(app, "user_expiry", "email_", template)
}
if err != nil {
return nil, err
}
return email, nil
}
// calls the send method in the underlying emailClient.
func (emailer *Emailer) send(email *Message, address ...string) error {
return emailer.sender.Send(emailer.fromName, emailer.fromAddr, email, address...)
}
func (app *appContext) sendByID(email *Message, ID ...string) error {
for _, id := range ID {
var err error
if tgChat, ok := app.storage.telegram[id]; ok && tgChat.Contact && telegramEnabled {
err = app.telegram.Send(email, tgChat.ChatID)
if err != nil {
return err
}
}
if dcChat, ok := app.storage.discord[id]; ok && dcChat.Contact && discordEnabled {
err = app.discord.Send(email, dcChat.ChannelID)
if err != nil {
return err
}
}
if mxChat, ok := app.storage.matrix[id]; ok && mxChat.Contact && matrixEnabled {
err = app.matrix.Send(email, mxChat)
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 {
return err
}
}
if err != nil {
return err
}
}
return nil
}
func (app *appContext) getAddressOrName(jfID string) string {
if dcChat, ok := app.storage.discord[jfID]; ok && dcChat.Contact && discordEnabled {
return dcChat.Username + "#" + dcChat.Discriminator
}
if tgChat, ok := app.storage.telegram[jfID]; ok && tgChat.Contact && telegramEnabled {
return "@" + tgChat.Username
}
if addr, ok := app.storage.emails[jfID]; ok {
return addr.Addr
}
return ""
}