implement custom welcome message (#820)

* implement custom welcome message

This change adds logic for handling custom welcome messages.

* trim welcome message string on POST

Instead of trimming the welcome message every time we are going to send to send
a welcome message, we just trim once when the message is posted from the admin.

config/defaults.go

@@ -7,6 +7,7 @@ type Defaults struct {
 	Name                 string
 	Title                string
 	Summary              string
+	ServerWelcomeMessage string
 	Logo                 string
 	Tags                 []string
 	PageBodyContent      string
@@ -30,6 +31,7 @@ func GetDefaults() Defaults {
 		Name:                 "Owncast",
 		Title:                "My Owncast Server",
 		Summary:              "This is brief summary of whom you are or what your stream is. You can edit this description in the admin.",
+		ServerWelcomeMessage: "",
 		Logo:                 "logo.svg",
 		Tags: []string{
 			"owncast",

controllers/admin/config.go

@@ -6,6 +6,7 @@ import (
 	"net/http"
 	"path/filepath"
 	"reflect"
+	"strings"
 
 	"github.com/owncast/owncast/controllers"
 	"github.com/owncast/owncast/core"
@@ -120,6 +121,25 @@ func SetServerSummary(w http.ResponseWriter, r *http.Request) {
 	controllers.WriteSimpleResponse(w, true, "changed")
 }
 
+// SetServerWelcomeMessage will handle the web config request to set the welcome message text.
+func SetServerWelcomeMessage(w http.ResponseWriter, r *http.Request) {
+	if !requirePOST(w, r) {
+		return
+	}
+
+	configValue, success := getValueFromRequest(w, r)
+	if !success {
+		return
+	}
+
+	if err := data.SetServerWelcomeMessage(strings.TrimSpace(configValue.Value.(string))); err != nil {
+		controllers.WriteSimpleResponse(w, false, err.Error())
+		return
+	}
+
+	controllers.WriteSimpleResponse(w, true, "changed")
+}
+
 // SetExtraPageContent will handle the web config request to set the page markdown content.
 func SetExtraPageContent(w http.ResponseWriter, r *http.Request) {
 	if !requirePOST(w, r) {

controllers/admin/serverConfig.go

@@ -35,6 +35,7 @@ func GetServerConfig(w http.ResponseWriter, r *http.Request) {
 			Tags:             data.GetServerMetadataTags(),
 			ExtraPageContent: data.GetExtraPageBodyContent(),
 			StreamTitle:      data.GetStreamTitle(),
+			WelcomeMessage:   data.GetServerWelcomeMessage(),
 			Logo:             data.GetLogoPath(),
 			SocialHandles:    data.GetSocialHandles(),
 			NSFW:             data.GetNSFW(),
@@ -85,6 +86,7 @@ type videoSettings struct {
 type webConfigResponse struct {
 	Name             string                `json:"name"`
 	Summary          string                `json:"summary"`
+	WelcomeMessage   string                `json:"welcomeMessage"`
 	Logo             string                `json:"logo"`
 	Tags             []string              `json:"tags"`
 	Version          string                `json:"version"`

core/chat/server.go

@@ -182,8 +182,10 @@ func (s *server) sendWelcomeMessageToClient(c *Client) {
 		// Add an artificial delay so people notice this message come in.
 		time.Sleep(7 * time.Second)
 
-		initialChatMessageText := fmt.Sprintf("Welcome to %s! %s", data.GetServerName(), data.GetServerSummary())
+		welcomeMessage := data.GetServerWelcomeMessage()
-		initialMessage := models.ChatEvent{ClientID: "owncast-server", Author: data.GetServerName(), Body: initialChatMessageText, ID: "initial-message-1", MessageType: "SYSTEM", Visible: true, Timestamp: time.Now()}
+		if welcomeMessage != "" {
+			initialMessage := models.ChatEvent{ClientID: "owncast-server", Author: data.GetServerName(), Body: welcomeMessage, ID: "initial-message-1", MessageType: "SYSTEM", Visible: true, Timestamp: time.Now()}
 			c.write(initialMessage)
+		}
 	}()
 }

core/data/config.go

@@ -16,6 +16,7 @@ const streamTitleKey = "stream_title"
 const streamKeyKey = "stream_key"
 const logoPathKey = "logo_path"
 const serverSummaryKey = "server_summary"
+const serverWelcomeMessageKey = "server_welcome_message"
 const serverNameKey = "server_name"
 const serverURLKey = "server_url"
 const httpPortNumberKey = "http_port_number"
@@ -119,6 +120,22 @@ func SetServerSummary(summary string) error {
 	return _datastore.SetString(serverSummaryKey, summary)
 }
 
+// GetServerWelcomeMessage will return the server welcome message text.
+func GetServerWelcomeMessage() string {
+	welcomeMessage, err := _datastore.GetString(serverWelcomeMessageKey)
+	if err != nil {
+		log.Debugln(serverWelcomeMessageKey, err)
+		return config.GetDefaults().ServerWelcomeMessage
+	}
+
+	return welcomeMessage
+}
+
+// SetServerWelcomeMessage will set the server welcome message text.
+func SetServerWelcomeMessage(welcomeMessage string) error {
+	return _datastore.SetString(serverWelcomeMessageKey, welcomeMessage)
+}
+
 // GetServerName will return the server name text.
 func GetServerName() string {
 	name, err := _datastore.GetString(serverNameKey)

core/data/defaults.go

@@ -28,6 +28,7 @@ func PopulateDefaults() {
 	_ = SetLogoPath(defaults.Logo)
 	_ = SetServerMetadataTags([]string{"owncast", "streaming"})
 	_ = SetServerSummary("Welcome to your new Owncast server!  This description can be changed in the admin")
+	_ = SetServerWelcomeMessage("")
 	_ = SetServerName("Owncast")
 	_ = SetStreamKey(defaults.StreamKey)
 	_ = SetExtraPageBodyContent("This is your page's content that can be edited in the admin.")

router/router.go

@@ -109,6 +109,9 @@ func Start() error {
 	// Server summary
 	http.HandleFunc("/api/admin/config/serversummary", middleware.RequireAdminAuth(admin.SetServerSummary))
 
+	// Server welcome message
+	http.HandleFunc("/api/admin/config/welcomemessage", middleware.RequireAdminAuth(admin.SetServerWelcomeMessage))
+
 	// Disable chat
 	http.HandleFunc("/api/admin/config/chat/disable", middleware.RequireAdminAuth(admin.SetChatDisabled))