Initial email settings UI commit

Added email settings page, settings now save in database, ability to send an email to client when it's created

emailer/smtp.go

@@ -20,7 +20,7 @@ type SmtpMail struct {
 	from       string
 }
 
-func authType(authType string) mail.AuthType {
+func AuthType(authType string) mail.AuthType {
 	switch strings.ToUpper(authType) {
 	case "PLAIN":
 		return mail.AuthPlain
@@ -31,7 +31,7 @@ func authType(authType string) mail.AuthType {
 	}
 }
 
-func encryptionType(encryptionType string) mail.Encryption {
+func EncryptionType(encryptionType string) mail.Encryption {
 	switch strings.ToUpper(encryptionType) {
 	case "SSL":
 		return mail.EncryptionSSL
@@ -45,7 +45,7 @@ func encryptionType(encryptionType string) mail.Encryption {
 }
 
 func NewSmtpMail(hostname string, port int, username string, password string, noTLSCheck bool, auth string, fromName, from string, encryption string) *SmtpMail {
-	ans := SmtpMail{hostname: hostname, port: port, username: username, password: password, noTLSCheck: noTLSCheck, fromName: fromName, from: from, authType: authType(auth), encryption: encryptionType(encryption)}
+	ans := SmtpMail{hostname: hostname, port: port, username: username, password: password, noTLSCheck: noTLSCheck, fromName: fromName, from: from, authType: AuthType(auth), encryption: EncryptionType(encryption)}
 	return &ans
 }
 

handler/routes.go

@@ -466,7 +466,7 @@ func NewClient(db store.IStore) echo.HandlerFunc {
 }
 
 // EmailClient handler to send the configuration via email
-func EmailClient(db store.IStore, mailer emailer.Emailer, emailSubject, emailContent string) echo.HandlerFunc {
+func EmailClient(db store.IStore) echo.HandlerFunc {
 	type clientIdEmailPayload struct {
 		ID    string `json:"id"`
 		Email string `json:"email"`
@@ -489,6 +489,15 @@ func EmailClient(db store.IStore, mailer emailer.Emailer, emailSubject, emailCon
 			return c.JSON(http.StatusNotFound, jsonHTTPResponse{false, "Client not found"})
 		}
 
+		// init mailer
+		var mailer emailer.Emailer
+		emailSetting, _ := db.GetEmailSettings()
+		if emailSetting.SendgridApiKey != "" {
+			mailer = emailer.NewSendgridApiMail(emailSetting.SendgridApiKey, emailSetting.EmailFromName, emailSetting.EmailFrom)
+		} else {
+			mailer = emailer.NewSmtpMail(emailSetting.SmtpHostname, emailSetting.SmtpPort, emailSetting.SmtpUsername, emailSetting.SmtpPassword, emailSetting.SmtpNoTLSCheck, emailSetting.SmtpAuthType, emailSetting.EmailFromName, emailSetting.EmailFrom, emailSetting.SmtpEncryption)
+		}
+
 		// build config
 		server, _ := db.GetServer()
 		globalSettings, _ := db.GetGlobalSettings()
@@ -509,10 +518,11 @@ func EmailClient(db store.IStore, mailer emailer.Emailer, emailSubject, emailCon
 		err = mailer.Send(
 			clientData.Client.Name,
 			payload.Email,
-			emailSubject,
+			emailSetting.DefaultEmailSubject,
-			emailContent,
+			emailSetting.DefaultEmailContent,
 			attachments,
 		)
+		fmt.Println("\n\n\n %s \n\n\n", err)
 
 		if err != nil {
 			return c.JSON(http.StatusInternalServerError, jsonHTTPResponse{false, err.Error()})
@@ -748,6 +758,64 @@ func GlobalSettings(db store.IStore) echo.HandlerFunc {
 	}
 }
 
+// EmailSettings handler
+func EmailSettings(db store.IStore) echo.HandlerFunc {
+	return func(c echo.Context) error {
+
+		emailSettings, err := db.GetEmailSettings()
+		if err != nil {
+			log.Error("Cannot get email settings: ", err)
+		}
+
+		return c.Render(http.StatusOK, "email_settings.html", map[string]interface{}{
+			"baseData":      model.BaseData{Active: "email-settings", CurrentUser: currentUser(c), Admin: isAdmin(c)},
+			"emailSettings": emailSettings,
+		})
+	}
+}
+
+// EmailSettingsSubmit handler to update the email settings
+func EmailSettingsSubmit(db store.IStore) echo.HandlerFunc {
+	return func(c echo.Context) error {
+		data := make(map[string]interface{})
+		err := json.NewDecoder(c.Request().Body).Decode(&data)
+
+		if err != nil {
+			return c.JSON(http.StatusBadRequest, jsonHTTPResponse{false, "Bad post data"})
+		}
+
+		emailSetting, err := db.GetEmailSettings()
+		if err != nil {
+			log.Error("Cannot get email settings: ", err)
+		}
+
+		if len(data) == 2 {
+			emailSetting.DefaultEmailSubject = data["default_email_subject"].(string)
+			emailSetting.DefaultEmailContent = data["default_email_content"].(string)
+		} else {
+			emailSetting.SendgridApiKey = data["sendgrid_api_key"].(string)
+			emailSetting.EmailFromName = data["email_from_name"].(string)
+			emailSetting.EmailFrom = data["email_from"].(string)
+			emailSetting.SmtpHostname = data["smtp_hostname"].(string)
+			emailSetting.SmtpPort = int(data["smtp_port"].(float64))
+			emailSetting.SmtpUsername = data["smtp_username"].(string)
+			emailSetting.SmtpPassword = data["smtp_password"].(string)
+			emailSetting.SmtpNoTLSCheck = data["smtp_no_tls_check"].(bool)
+			emailSetting.SmtpAuthType = data["smtp_auth_type"].(string)
+			emailSetting.SmtpEncryption = data["smtp_encryption"].(string)
+		}
+
+		// write config to the database
+		if err := db.SaveEmailSettings(emailSetting); err != nil {
+			return c.JSON(http.StatusInternalServerError, jsonHTTPResponse{false, "Cannot update email settings"})
+		}
+
+		log.Infof("Updated email settings: %v", emailSetting)
+
+		return c.JSON(http.StatusOK, jsonHTTPResponse{true, "Updated email settings successfully"})
+	}
+}
+
 // Status handler
 func Status(db store.IStore) echo.HandlerFunc {
 	type PeerVM struct {

main.go

@@ -11,7 +11,6 @@ import (
 	"time"
 
 	rice "github.com/GeertJohan/go.rice"
-	"github.com/ngoduykhanh/wireguard-ui/emailer"
 	"github.com/ngoduykhanh/wireguard-ui/handler"
 	"github.com/ngoduykhanh/wireguard-ui/router"
 	"github.com/ngoduykhanh/wireguard-ui/store/jsondb"
@@ -42,18 +41,11 @@ var (
 	flagBasePath       string
 )
 
-const (
-	defaultEmailSubject = "Your wireguard configuration"
-	defaultEmailContent = `Hi,</br>
-<p>In this email you can find your personal configuration for our wireguard server.</p>
-
-<p>Best</p>
-`
-)
-
 func init() {
 
 	// command-line flags and env variables
+	// TODO move ENV_VAR variables and default values to config.go
+
 	flag.BoolVar(&flagDisableLogin, "disable-login", util.LookupEnvOrBool("DISABLE_LOGIN", flagDisableLogin), "Disable authentication on the app. This is potentially dangerous.")
 	flag.StringVar(&flagBindAddress, "bind-address", util.LookupEnvOrString("BIND_ADDRESS", flagBindAddress), "Address:Port to which the app will be bound.")
 	flag.StringVar(&flagSmtpHostname, "smtp-hostname", util.LookupEnvOrString("SMTP_HOSTNAME", flagSmtpHostname), "SMTP Hostname")
@@ -127,6 +119,34 @@ func main() {
 	// create the wireguard config on start, if it doesn't exist
 	initServerConfig(db, tmplBox)
 
+	// check and update email settings if necessary
+	if util.SendgridApiKey != "" {
+		emailSetting, _ := db.GetEmailSettings()
+		emailSetting.SendgridApiKey = util.SendgridApiKey
+		emailSetting.EmailFromName = util.EmailFromName
+		emailSetting.EmailFrom = util.EmailFrom
+		err := db.SaveEmailSettings(emailSetting)
+		if err != nil {
+			panic(err)
+		}
+	}
+	if util.SmtpUsername != "" {
+		emailSetting, _ := db.GetEmailSettings()
+		emailSetting.EmailFromName = util.EmailFromName
+		emailSetting.EmailFrom = util.EmailFrom
+		emailSetting.SmtpHostname = util.SmtpHostname
+		emailSetting.SmtpPort = util.SmtpPort
+		emailSetting.SmtpUsername = util.SmtpUsername
+		emailSetting.SmtpPassword = util.SmtpPassword
+		emailSetting.SmtpNoTLSCheck = util.SmtpNoTLSCheck
+		emailSetting.SmtpAuthType = util.SmtpAuthType
+		emailSetting.SmtpEncryption = util.SmtpEncryption
+		err := db.SaveEmailSettings(emailSetting)
+		if err != nil {
+			panic(err)
+		}
+	}
+
 	// register routes
 	app := router.New(tmplBox, extraData, util.SessionSecret)
 
@@ -145,17 +165,10 @@ func main() {
 		app.GET(util.BasePath+"/api/user/:username", handler.GetUser(db), handler.ValidSession)
 	}
 
-	var sendmail emailer.Emailer
-	if util.SendgridApiKey != "" {
-		sendmail = emailer.NewSendgridApiMail(util.SendgridApiKey, util.EmailFromName, util.EmailFrom)
-	} else {
-		sendmail = emailer.NewSmtpMail(util.SmtpHostname, util.SmtpPort, util.SmtpUsername, util.SmtpPassword, util.SmtpNoTLSCheck, util.SmtpAuthType, util.EmailFromName, util.EmailFrom, util.SmtpEncryption)
-	}
-
 	app.GET(util.BasePath+"/_health", handler.Health())
 	app.POST(util.BasePath+"/new-client", handler.NewClient(db), handler.ValidSession, handler.ContentTypeJson)
 	app.POST(util.BasePath+"/update-client", handler.UpdateClient(db), handler.ValidSession, handler.ContentTypeJson)
-	app.POST(util.BasePath+"/email-client", handler.EmailClient(db, sendmail, defaultEmailSubject, defaultEmailContent), handler.ValidSession, handler.ContentTypeJson)
+	app.POST(util.BasePath+"/email-client", handler.EmailClient(db), handler.ValidSession, handler.ContentTypeJson)
 	app.POST(util.BasePath+"/client/set-status", handler.SetClientStatus(db), handler.ValidSession, handler.ContentTypeJson)
 	app.POST(util.BasePath+"/remove-client", handler.RemoveClient(db), handler.ValidSession, handler.ContentTypeJson)
 	app.GET(util.BasePath+"/download", handler.DownloadClient(db), handler.ValidSession)
@@ -163,7 +176,8 @@ func main() {
 	app.POST(util.BasePath+"/wg-server/interfaces", handler.WireGuardServerInterfaces(db), handler.ValidSession, handler.ContentTypeJson, handler.NeedsAdmin)
 	app.POST(util.BasePath+"/wg-server/keypair", handler.WireGuardServerKeyPair(db), handler.ValidSession, handler.ContentTypeJson, handler.NeedsAdmin)
 	app.GET(util.BasePath+"/global-settings", handler.GlobalSettings(db), handler.ValidSession, handler.NeedsAdmin)
-
+	app.GET(util.BasePath+"/email-settings", handler.EmailSettings(db), handler.ValidSession, handler.NeedsAdmin)
+	app.POST(util.BasePath+"/email-settings", handler.EmailSettingsSubmit(db), handler.ValidSession, handler.NeedsAdmin)
 	app.POST(util.BasePath+"/global-settings", handler.GlobalSettingSubmit(db), handler.ValidSession, handler.ContentTypeJson, handler.NeedsAdmin)
 	app.GET(util.BasePath+"/status", handler.Status(db), handler.ValidSession)
 	app.GET(util.BasePath+"/api/clients", handler.GetClients(db), handler.ValidSession)

model/setting.go

@@ -14,3 +14,18 @@ type GlobalSetting struct {
 	ConfigFilePath      string    `json:"config_file_path"`
 	UpdatedAt           time.Time `json:"updated_at"`
 }
+
+type EmailSetting struct {
+	SendgridApiKey      string `json:"sendgrid_api_key"`
+	EmailFromName       string `json:"email_from_name"`
+	EmailFrom           string `json:"email_from"`
+	SmtpHostname        string `json:"smtp_hostname"`
+	SmtpPort            int    `json:"smtp_port"`
+	SmtpUsername        string `json:"smtp_username"`
+	SmtpPassword        string `json:"smtp_password"`
+	SmtpNoTLSCheck      bool   `json:"smtp_no_tls_check"`
+	SmtpAuthType        string `json:"smtp_auth_type"`
+	SmtpEncryption      string `json:"smtp_encryption"`
+	DefaultEmailSubject string `json:"default_email_subject"`
+	DefaultEmailContent string `json:"default_email_content"`
+}

router/router.go

@@ -83,6 +83,11 @@ func New(tmplBox *rice.Box, extraData map[string]string, secret []byte) *echo.Ec
 		log.Fatal(err)
 	}
 
+	tmplEmailSettingsString, err := tmplBox.String("email_settings.html")
+	if err != nil {
+		log.Fatal(err)
+	}
+
 	tmplUsersSettingsString, err := tmplBox.String("users_settings.html")
 	if err != nil {
 		log.Fatal(err)
@@ -108,6 +113,7 @@ func New(tmplBox *rice.Box, extraData map[string]string, secret []byte) *echo.Ec
 	templates["clients.html"] = template.Must(template.New("clients").Funcs(funcs).Parse(tmplBaseString + tmplClientsString))
 	templates["server.html"] = template.Must(template.New("server").Funcs(funcs).Parse(tmplBaseString + tmplServerString))
 	templates["global_settings.html"] = template.Must(template.New("global_settings").Funcs(funcs).Parse(tmplBaseString + tmplGlobalSettingsString))
+	templates["email_settings.html"] = template.Must(template.New("email_settings").Funcs(funcs).Parse(tmplBaseString + tmplEmailSettingsString))
 	templates["users_settings.html"] = template.Must(template.New("users_settings").Funcs(funcs).Parse(tmplBaseString + tmplUsersSettingsString))
 	templates["status.html"] = template.Must(template.New("status").Funcs(funcs).Parse(tmplBaseString + tmplStatusString))
 	templates["wake_on_lan_hosts.html"] = template.Must(template.New("wake_on_lan_hosts").Funcs(funcs).Parse(tmplBaseString + tmplWakeOnLanHostsString))

store/jsondb/jsondb.go

@@ -42,6 +42,7 @@ func (o *JsonDB) Init() error {
 	var serverInterfacePath string = path.Join(serverPath, "interfaces.json")
 	var serverKeyPairPath string = path.Join(serverPath, "keypair.json")
 	var globalSettingPath string = path.Join(serverPath, "global_settings.json")
+	var emailSettingPath string = path.Join(serverPath, "email_settings.json")
 	var userPath string = path.Join(o.dbPath, "users")
 	// create directories if they do not exist
 	if _, err := os.Stat(clientPath); os.IsNotExist(err) {
@@ -105,6 +106,27 @@ func (o *JsonDB) Init() error {
 		o.conn.Write("server", "global_settings", globalSetting)
 	}
 
+	// email settings
+	// TODO move ENV_VAR variables and default values to config.go
+	if _, err := os.Stat(emailSettingPath); os.IsNotExist(err) {
+		emailSetting := new(model.EmailSetting)
+		emailSetting.SendgridApiKey = util.LookupEnvOrString("SENDGRID_API_KEY", "")
+		emailSetting.EmailFromName = util.LookupEnvOrString("EMAIL_FROM_NAME", "WireGuard UI")
+		emailSetting.EmailFrom = util.LookupEnvOrString("EMAIL_FROM_ADDRESS", "")
+		emailSetting.SmtpHostname = util.LookupEnvOrString("SMTP_HOSTNAME", "127.0.0.1")
+		emailSetting.SmtpPort = util.LookupEnvOrInt("SMTP_PORT", 25)
+		emailSetting.SmtpUsername = util.LookupEnvOrString("SMTP_USERNAME", "")
+		emailSetting.SmtpPassword = util.LookupEnvOrString("SMTP_PASSWORD", "")
+		emailSetting.SmtpNoTLSCheck = util.LookupEnvOrBool("SMTP_NO_TLS_CHECK", false)
+		emailSetting.SmtpAuthType = util.LookupEnvOrString("SMTP_AUTH_TYPE", "NONE")
+		emailSetting.SmtpEncryption = util.LookupEnvOrString("SMTP_ENCRYPTION", "STARTTLS")
+		emailSetting.DefaultEmailSubject = "Your wireguard configuration"
+		emailSetting.DefaultEmailContent = `Hi,</br>
+<p>In this email you can find your personal configuration for our wireguard server.</p>
+<p>Best</p>`
+		o.conn.Write("server", "email_settings", emailSetting)
+	}
+
 	// user info
 	results, err := o.conn.ReadAll("users")
 	if err != nil || len(results) < 1 {
@@ -295,3 +317,13 @@ func (o *JsonDB) SaveServerKeyPair(serverKeyPair model.ServerKeypair) error {
 func (o *JsonDB) SaveGlobalSettings(globalSettings model.GlobalSetting) error {
 	return o.conn.Write("server", "global_settings", globalSettings)
 }
+
+// GetEmailSettings func to query email settings from the database
+func (o *JsonDB) GetEmailSettings() (model.EmailSetting, error) {
+	settings := model.EmailSetting{}
+	return settings, o.conn.Read("server", "email_settings", &settings)
+}
+
+func (o *JsonDB) SaveEmailSettings(emailSettings model.EmailSetting) error {
+	return o.conn.Write("server", "email_settings", emailSettings)
+}

store/store.go

@@ -11,6 +11,7 @@ type IStore interface {
 	SaveUser(user model.User) error
 	DeleteUser(username string) error
 	GetGlobalSettings() (model.GlobalSetting, error)
+	GetEmailSettings() (model.EmailSetting, error)
 	GetServer() (model.Server, error)
 	GetClients(hasQRCode bool) ([]model.ClientData, error)
 	GetClientByID(clientID string, qrCode model.QRCodeSettings) (model.ClientData, error)
@@ -19,6 +20,7 @@ type IStore interface {
 	SaveServerInterface(serverInterface model.ServerInterface) error
 	SaveServerKeyPair(serverKeyPair model.ServerKeypair) error
 	SaveGlobalSettings(globalSettings model.GlobalSetting) error
+	SaveEmailSettings(emailSettings model.EmailSetting) error
 	GetWakeOnLanHosts() ([]model.WakeOnLanHost, error)
 	GetWakeOnLanHost(macAddress string) (*model.WakeOnLanHost, error)
 	DeleteWakeOnHostLanHost(macAddress string) error

templates/base.html

@@ -134,6 +134,14 @@
                                 </p>
                             </a>
                         </li>
+                        <li class="nav-item">
+                            <a href="{{.basePath}}/email-settings" class="nav-link {{if eq .baseData.Active "email-settings" }}active{{end}}">
+                            <i class="nav-icon fas fa-cog"></i>
+                            <p>
+                                Email Settings
+                            </p>
+                            </a>
+                        </li>
                         <li class="nav-item">
                             <a href="{{.basePath}}/users-settings" class="nav-link {{if eq .baseData.Active "users-settings" }}active{{end}}">
                             <i class="nav-icon fas fa-cog"></i>
@@ -226,6 +234,14 @@
                                     </label>
                                 </div>
                             </div>
+                            <div class="form-group">
+                                <div class="icheck-primary d-inline">
+                                    <input type="checkbox" id="send_email_after_creation" {{ if .client_defaults.EnableAfterCreation }}checked{{ end }}>
+                                    <label for="send_email_after_creation">
+                                        Send email after creation
+                                    </label>
+                                </div>
+                            </div>
                             <details>
                                 <summary><strong>Public and Preshared Keys</strong>
                                     <i class="fas fa-info-circle" data-toggle="tooltip"
@@ -399,6 +415,7 @@
                 success: function(resp) {
                     $("#modal_new_client").modal('hide');
                     toastr.success('Created new client successfully');
+                        sendEmailAfterCreation(resp.id, resp.email);
                     // Update the home page (clients page) after adding successfully
                     if (window.location.pathname === "{{.basePath}}/") {
                         populateClient(resp.id);
@@ -431,6 +448,31 @@
                 }
             });
         }
+
+        function sendEmailAfterCreation(client_id, client_email) {
+            console.log("Do you even try?");
+            if ($("#send_email_after_creation").is(':checked')) {
+                if (client_email !== "" && client_id) {
+                    const data = {"id": client_id, "email": client_email};
+                    $.ajax({
+                        cache: false,
+                        method: 'POST',
+                        url: '{{.basePath}}/email-client',
+                        dataType: 'json',
+                        contentType: "application/json",
+                        data: JSON.stringify(data),
+                        success: function (resp) {
+                            toastr.success('Sent email to client successfully');
+                        },
+                        error: function (jqXHR, exception) {
+                            const responseJson = jQuery.parseJSON(jqXHR.responseText);
+                            toastr.error(responseJson['message']);
+                        }
+                    });
+                }
+            }
+        }
+
     </script>
     <script>
         //Initialize Select2 Elements

templates/email_settings.html

@@ -0,0 +1,364 @@
+{{define "title"}}
+Email Settings
+{{end}}
+
+{{define "top_css"}}
+{{end}}
+
+{{define "username"}}
+{{ .username }}
+{{end}}
+
+{{define "page_title"}}
+Email Settings
+{{end}}
+
+{{define "page_content"}}
+<section class="content">
+    <div class="container-fluid">
+        <!-- <h5 class="mt-4 mb-2">Global Settings</h5> -->
+        <div class="row">
+            <!-- left column -->
+            <div class="col-md-6">
+                <div class="card card-success">
+                    <div class="card-header">
+                        <h3 class="card-title">Email Settings</h3>
+                    </div>
+                    <!-- /.card-header -->
+                    <!-- form start -->
+                    <form role="form" id="frm_email_settings" name="frm_email_settings">
+                        <div class="card-body">
+
+                            <div class="form-group">
+                                <label for="sendgrid_api_key">Sendgrid API Key (If provided, overrules SMTP
+                                    settings)</label>
+                                <input type="text" class="form-control" id="sendgrid_api_key"
+                                       name="sendgrid_api_key" value="{{ .emailSettings.SendgridApiKey }}">
+                            </div>
+                            <div class="form-group">
+                                <label for="email_from_name">Email From Name</label>
+                                <input type="text" class="form-control" id="email_from_name"
+                                       name="email_from_name" placeholder="E.g. WireGuard UI"
+                                       value="{{ .emailSettings.EmailFromName }}">
+                            </div>
+                            <div class="form-group">
+                                <label for="email_from">Email From</label>
+                                <input type="text" class="form-control" id="email_from"
+                                       name="email_from" placeholder="E.g. system@wireguard.com"
+                                       value="{{ .emailSettings.EmailFrom }}">
+                            </div>
+                            <div style="display: flex;">
+                                <div class="form-group" style="width: 48%;">
+                                    <label for="smtp_hostname">SMTP Hostname</label>
+                                    <input type="text" class="form-control" id="smtp_hostname"
+                                           name="smtp_hostname" placeholder="E.g. 127.0.0.1"
+                                           value="{{ .emailSettings.SmtpHostname }}">
+                                </div>
+                                <div class="form-group" style="width: 48%; margin-left: 4%">
+                                    <label for="smtp_port">SMTP Port</label>
+                                    <input type="text" class="form-control" id="smtp_port"
+                                           name="smtp_port" placeholder="E.g. 25"
+                                           value="{{ .emailSettings.SmtpPort }}">
+                                </div>
+                            </div>
+                            <div style="display: flex;">
+                                <div class="form-group" style="width: 48%;">
+                                    <label for="smtp_username">SMTP Username</label>
+                                    <input type="text" class="form-control" id="smtp_username"
+                                           name="smtp_username" placeholder="E.g. system@wireguard.com"
+                                           value="{{ .emailSettings.SmtpUsername }}">
+                                </div>
+                                <div class="form-group" style="width: 48%; margin-left: 4%">
+                                    <label for="smtp_password">SMTP Password</label>
+                                    <input type="text" class="form-control" id="smtp_password"
+                                           name="smtp_password" placeholder="E.g. *******"
+                                           value="{{ .emailSettings.SmtpPassword }}">
+                                </div>
+                            </div>
+                            <div style="display: flex;">
+                                <div class="form-group" style="width: 48%;">
+                                    <label for="smtp_auth_type">SMTP Auth Type</label>
+                                    <input type="text" class="form-control" id="smtp_auth_type"
+                                           name="smtp_auth_type" placeholder="NONE/LOGIN/PLAIN"
+                                           value="{{ .emailSettings.SmtpAuthType }}">
+                                </div>
+                                <div class="form-group" style="width: 48%; margin-left: 4%">
+                                    <label for="smtp_encryption">SMTP Encryption</label>
+                                    <input type="text" class="form-control" id="smtp_encryption"
+                                           name="smtp_encryption" placeholder="SSL/SSLTLS/TLS/STARTTLS"
+                                           value="{{ .emailSettings.SmtpEncryption }}">
+                                </div>
+                            </div>
+                            <div class="form-group">
+                                <div class="icheck-primary d-inline">
+                                    <input type="checkbox" id="smtp_no_tls_check" {{if .emailSettings.SmtpNoTLSCheck
+                                           }}checked{{end}}>
+                                    <label for="smtp_no_tls_check">
+                                        SMTP No TLS Check
+                                    </label>
+                                </div>
+                            </div>
+
+                        </div>
+                        <!-- /.card-body -->
+
+                        <div class="card-footer">
+                            <button type="submit" class="btn btn-success">Save</button>
+                        </div>
+                    </form>
+                </div>
+                <!-- /.card -->
+            </div>
+            <div class="col-md-6">
+                <div class="card card-success">
+                    <div class="card-header">
+                        <h3 class="card-title">Email Template</h3>
+                    </div>
+                    <!-- /.card-header -->
+                    <form role="form" id="frm_email_settings2" name="frm_email_settings2">
+                        <div class="card-body">
+
+                            <div class="form-group">
+                                <label for="default_email_subject">Email Subject</label>
+                                <input type="text" class="form-control" id="default_email_subject"
+                                       name="default_email_subject" placeholder="Your Wireguard configuration"
+                                       value="{{ .emailSettings.DefaultEmailSubject }}">
+                            </div>
+                            <div class="form-group">
+                                <label for="default_email_content">Email Content</label>
+                                <textarea class="form-control" id="default_email_content"
+                                          name="default_email_content" rows="10" style="white-space: pre-wrap;">{{ .emailSettings.DefaultEmailContent }}</textarea>
+                            </div>
+                        </div>
+                        <div class="card-footer">
+                            <button type="submit" class="btn btn-success">Save</button>
+                        </div>
+                    </form>
+                </div>
+                <!-- /.card -->
+            </div>
+            <!-- /.row -->
+        </div>
+    </div>
+</section>
+
+{{end}}
+
+{{define "bottom_js"}}
+<script>
+    function submitEmailSettings() {
+
+        const sendgrid_api_key = $("#sendgrid_api_key").val();
+        const email_from_name = $("#email_from_name").val();
+        const email_from = $("#email_from").val();
+        const smtp_hostname = $("#smtp_hostname").val();
+        let smtp_port = 0;
+        if ($("#smtp_port").val().length !== 0) {
+            smtp_port = parseInt($("#smtp_port").val());
+        }
+        const smtp_username = $("#smtp_username").val();
+        const smtp_password = $("#smtp_password").val();
+        const smtp_auth_type = $("#smtp_auth_type").val();
+        const smtp_encryption = $("#smtp_encryption").val();
+        let smtp_no_tls_check = false;
+        if ($("#smtp_no_tls_check").is(':checked')) {
+            smtp_no_tls_check = true;
+        }
+
+        const data = {
+            "sendgrid_api_key": sendgrid_api_key,
+            "email_from_name": email_from_name,
+            "email_from": email_from,
+            "smtp_hostname": smtp_hostname,
+            "smtp_port": smtp_port,
+            "smtp_username": smtp_username,
+            "smtp_password": smtp_password,
+            "smtp_no_tls_check": smtp_no_tls_check,
+            "smtp_auth_type": smtp_auth_type,
+            "smtp_encryption": smtp_encryption
+        };
+
+        $.ajax({
+            cache: false,
+            method: 'POST',
+            url: '{{.basePath}}/email-settings',
+            dataType: 'json',
+            contentType: "application/json",
+            data: JSON.stringify(data),
+            success: function (data) {
+                toastr.success('Updated email settings successfully');
+            },
+            error: function (jqXHR, exception) {
+                const responseJson = jQuery.parseJSON(jqXHR.responseText);
+                toastr.error(responseJson['message']);
+            }
+        });
+    }
+
+    function submitEmailSettings2() {
+
+        const default_email_subject = $("#default_email_subject").val();
+        const default_email_content = $("#default_email_content").val();
+
+
+        const data = {
+            "default_email_content": default_email_content,
+            "default_email_subject": default_email_subject
+        };
+
+        $.ajax({
+            cache: false,
+            method: 'POST',
+            url: '{{.basePath}}/email-settings',
+            dataType: 'json',
+            contentType: "application/json",
+            data: JSON.stringify(data),
+            success: function (data) {
+                toastr.success('Updated email default message settings successfully');
+            },
+            error: function (jqXHR, exception) {
+                const responseJson = jQuery.parseJSON(jqXHR.responseText);
+                toastr.error(responseJson['message']);
+            }
+        });
+    }
+
+</script>
+<script>
+
+    // submitHandler
+    function submitHandler(form) {
+        const formId = $(form).attr('id');
+        if (formId === "frm_email_settings") {
+            submitEmailSettings();
+        } else if (formId === "frm_email_settings2") {
+            submitEmailSettings2();
+        }
+    }
+
+    // Global setting form validation
+    $(document).ready(function () {
+        $.validator.setDefaults({
+            submitHandler: function (form) {
+                submitHandler(form);
+            }
+        });
+        $("#frm_email_settings").validate({
+            rules: {
+                email_from_name: {
+                    required: true
+                },
+                email_from: {
+                    required: true
+                },
+                smtp_hostname: {
+                    required: function () {
+                        return $("#sendgrid_api_key").val() === "";
+                    }
+                },
+                smtp_port: {
+                    required: function () {
+                        return $("#sendgrid_api_key").val() === "";
+                    },
+                    digits: true,
+                    range: [0, 65535]
+                },
+                smtp_username: {
+                    required: function () {
+                        return $("#sendgrid_api_key").val() === "";
+                    }
+                },
+                smtp_password: {
+                    required: function () {
+                        return $("#sendgrid_api_key").val() === "";
+                    }
+                },
+                smtp_no_tls_check: {
+                    digits: true
+                },
+                smtp_auth_type: {
+                    required: function () {
+                        return $("#sendgrid_api_key").val() === "";
+                    }
+                },
+                smtp_encryption: {
+                    required: function () {
+                        return $("#sendgrid_api_key").val() === "";
+                    }
+                }
+            },
+            messages: {
+                email_from_name: {
+                    required: "Field is mandatory"
+                },
+                email_from: {
+                    required: "Field is mandatory"
+                },
+                smtp_hostname: {
+                    required: "No Sendgrid API key, this field is mandatory"
+                },
+                smtp_port: {
+                    required: "No Sendgrid API key, this field is mandatory",
+                    digits: "Port must be an integer",
+                    range: "Port must be in range 0..65535"
+                },
+                smtp_username: {
+                    required: "No Sendgrid API key, this field is mandatory"
+                },
+                smtp_password: {
+                    required: "No Sendgrid API key, this field is mandatory"
+                },
+                smtp_auth_type: {
+                    required: "No Sendgrid API key, this field is mandatory"
+                },
+                smtp_encryption: {
+                    required: "No Sendgrid API key, this field is mandatory"
+                }
+            },
+            errorElement: 'span',
+            errorPlacement: function (error, element) {
+                error.addClass('invalid-feedback');
+                element.closest('.form-group').append(error);
+            },
+            highlight: function (element, errorClass, validClass) {
+                $(element).addClass('is-invalid');
+            },
+            unhighlight: function (element, errorClass, validClass) {
+                $(element).removeClass('is-invalid');
+            }
+        });
+
+        $("#frm_email_settings2").validate({
+            rules: {
+                default_email_subject: {
+                    required: true
+                },
+                default_email_content: {
+                    required: true
+                }
+            },
+            messages: {
+                default_email_subject: {
+                    required: "Field is mandatory"
+                },
+                default_email_content: {
+                    required: "Field is mandatory"
+                }
+            },
+            errorElement: 'span',
+            errorPlacement: function (error, element) {
+                error.addClass('invalid-feedback');
+                element.closest('.form-group').append(error);
+            },
+            highlight: function (element, errorClass, validClass) {
+                $(element).addClass('is-invalid');
+            },
+            unhighlight: function (element, errorClass, validClass) {
+                $(element).removeClass('is-invalid');
+            }
+        });
+
+    });
+
+</script>
+{{end}}