Disable index by default

fly.toml

@@ -16,6 +16,7 @@ strategy = "immediate"
 
 [env]
 ROOT_URL = "https://scribblers.bios-marcel.link"
+ALLOW_INDEXING = true
 SERVE_DIRECTORIES = ":/public"
 LOBBY_SETTING_BOUNDS_MAX_MAX_PLAYERS = 100
 

internal/config/config.go

@@ -57,6 +57,9 @@ type Config struct {
 	// CanonicalURL specifies the original domain, in case we are accessing the
 	// site via some other domain, such as scribblers.fly.dev
 	CanonicalURL string `env:"CANONICAL_URL"`
+	// AllowIndexing will control whether the noindex, nofollow meta tag is
+	// added to the home page.
+	AllowIndexing bool `env:"ALLOW_INDEXING"`
 	// ServeDirectories is a map of `path` to `directory`. All directories are
 	// served under the given path.
 	ServeDirectories map[string]string `env:"SERVE_DIRECTORIES"`

internal/frontend/http.go

@@ -54,6 +54,9 @@ type BasePageConfig struct {
 	// CanonicalURL specifies the original domain, in case we are accessing the
 	// site via some other domain, such as scribblers.fly.dev
 	CanonicalURL string `json:"canonicalUrl"`
+	// AllowIndexing will control whether the noindex, nofollow meta tag is
+	// added to the home page.
+	AllowIndexing bool `env:"ALLOW_INDEXING"`
 }
 
 var fallbackChecksum = uuid.Must(uuid.NewV4()).String()

internal/frontend/index.go

@@ -45,12 +45,13 @@ type SSRHandler struct {
 
 func NewHandler(cfg *config.Config) (*SSRHandler, error) {
 	basePageConfig := &BasePageConfig{
-		checksums:    make(map[string]string),
-		hash:         md5.New(),
-		Version:      version.Version,
-		Commit:       version.Commit,
-		RootURL:      cfg.RootURL,
-		CanonicalURL: cfg.CanonicalURL,
+		checksums:     make(map[string]string),
+		hash:          md5.New(),
+		Version:       version.Version,
+		Commit:        version.Commit,
+		RootURL:       cfg.RootURL,
+		CanonicalURL:  cfg.CanonicalURL,
+		AllowIndexing: cfg.AllowIndexing,
 	}
 	if cfg.RootPath != "" {
 		basePageConfig.RootPath = "/" + cfg.RootPath

internal/frontend/templates/index.html

@@ -12,6 +12,8 @@
             skribbl.io, scribble, scribblers, scribble.rs, pictionary,
             montagsmaler, sketchful, draw and guess, drawmything, free, oss">
     <link rel="canonical" href="{{.CanonicalURL}}" />
+    {{if not .AllowIndexing}}
+    <meta name="robots" content="noindex, nofollow">{{end}}
     {{if ne "" .RootURL}}
     <meta property="og:image" content="{{.RootURL}}{{.RootPath}}/resources/logo.png">
     <meta property="og:image:type" content="image/png">