add: html footer config

crates/app/src/assets.rs

@@ -105,6 +105,9 @@ pub const LANG_EN_US: &str = include_str!("./langs/en-US.toml");
 pub const VENDOR_SPOTIFY_ICON: &str = include_str!("./public/images/vendor/spotify.svg");
 pub const VENDOR_LAST_FM_ICON: &str = include_str!("./public/images/vendor/last-fm.svg");
 
+pub(crate) static HTML_FOOTER: LazyLock<RwLock<String>> =
+    LazyLock::new(|| RwLock::new(String::new()));
+
 /// A container for all loaded icons.
 pub(crate) static ICONS: LazyLock<RwLock<HashMap<String, String>>> =
     LazyLock::new(|| RwLock::new(HashMap::new()));
@@ -148,6 +151,24 @@ macro_rules! vendor_icon {
 /// * icons (with class specifier)
 /// * l10n text
 pub(crate) async fn replace_in_html(input: &str, config: &Config) -> String {
+    let reader = HTML_FOOTER.read().await;
+
+    if reader.is_empty() {
+        if !config.html_footer_path.is_empty() {
+            drop(reader);
+
+            let mut writer = HTML_FOOTER.write().await;
+            *writer = read_to_string(PathBufD::current().join(&config.html_footer_path)).unwrap();
+        } else {
+            drop(reader);
+        }
+    } else {
+        drop(reader);
+    }
+
+    let reader = HTML_FOOTER.read().await;
+
+    // ...
     let mut input = input.to_string();
     input = input.replace("<!-- prettier-ignore -->", "");
 
@@ -195,6 +216,7 @@ pub(crate) async fn replace_in_html(input: &str, config: &Config) -> String {
     }
 
     // return
+    input = input.replacen("<!-- html_footer_goes_here -->", &format!("{reader}"), 1);
     input
 }
 

crates/app/src/public/html/root.html

@@ -90,6 +90,7 @@ macros -%}
                 </main>
             </article>
             {% else %} {% block body %}{% endblock %} {% endif %}
+            <!-- html_footer_goes_here -->
         </div>
 
         <script data-turbo-permanent="true" id="init-script">

crates/core/src/config.rs

@@ -150,8 +150,7 @@ impl Default for TurnstileConfig {
     }
 }
 
-#[derive(Clone, Serialize, Deserialize, Debug)]
-#[derive(Default)]
+#[derive(Clone, Serialize, Deserialize, Debug, Default)]
 pub struct ConnectionsConfig {
     /// <https://developer.spotify.com/documentation/web-api>
     #[serde(default)]
@@ -164,7 +163,6 @@ pub struct ConnectionsConfig {
     pub last_fm_secret: Option<String>,
 }
 
-
 /// Configuration file
 #[derive(Clone, Serialize, Deserialize, Debug)]
 pub struct Config {
@@ -222,6 +220,10 @@ pub struct Config {
     pub town_square: usize,
     #[serde(default)]
     pub connections: ConnectionsConfig,
+    /// The path to the HTML footer file. The contents of this file are embedded
+    /// into every HTML template. They support access to template fields like `{{ user }}`.
+    #[serde(default)]
+    pub html_footer_path: String,
 }
 
 fn default_name() -> String {
@@ -308,6 +310,7 @@ impl Default for Config {
             turnstile: default_turnstile(),
             town_square: 0,
             connections: default_connections(),
+            html_footer_path: String::new(),
         }
     }
 }

example/public/footer.html

@@ -0,0 +1,5 @@
+{% if user %}
+<script>
+    console.log("current user is {{ user.username }}");
+</script>
+{% endif %}

example/tetratto.toml

@@ -18,6 +18,7 @@ banned_usernames = [
     "anonymous",
 ]
 town_square = 166340372315581657
+html_footer_path = "public/footer.html"
 
 [security]
 registration_enabled = true