1 files changed, 35 insertions, 0 deletions
diff --git a/src/theming/hbs.rs b/src/theming/hbs.rs
new file mode 100644
index 0000000..73c72ae
--- /dev/null
+++ b/src/theming/hbs.rs
@@ -0,0 +1,35 @@
+use std::sync::LazyLock;
+
+use handlebars::*;
+use reqwest::StatusCode;
+
+use crate::CONFIG;
+
+static INTERNAL_THEMES: &[(&str, &str)] = &[("plain", include_str!("hbs/plain.hbs"))];
+
+static HANDLEBARS: LazyLock<Handlebars> = LazyLock::new(|| {
+  let mut hb = Handlebars::new();
+  handlebars_helper!(url_encode: |s: String| urlencoding::encode(&s));
+
+  hb.register_helper("url-encode", Box::new(url_encode));
+
+  for (key, fulltext) in INTERNAL_THEMES {
+    log::info!("Registering internal theme `{key}`");
+    hb.register_template_string(key, fulltext).unwrap();
+  }
+  hb.set_dev_mode(CONFIG.theme_debug);
+
+  if let Some(themes_dir) = CONFIG.theme_dir.as_ref() {
+    log::info!("Registering theme dir `{themes_dir}`");
+    hb.register_templates_directory(&CONFIG.theme_ext, themes_dir.as_ref()).unwrap();
+  }
+
+  hb
+});
+
+pub fn render_theme(name: &str, ctx: &crate::ctx::Ctx) -> Option<Result<String, StatusCode>> {
+  let templ = HANDLEBARS.get_template(name)?;
+  let ctx = Context::wraps(ctx).unwrap();
+  let render = templ.renders(&HANDLEBARS, &ctx, &mut RenderContext::new(Some(&name.into()))).map_err(|_| StatusCode::INTERNAL_SERVER_ERROR);
+  Some(render)
+}