implement generation of simple templates (/sandbox)

crates/treehouse/src/dirs.rs

@@ -9,7 +9,7 @@ pub struct Dirs {
     pub template: DynDir,
 
     // `static` directories
-    pub pics: DynDir,
+    pub pic: DynDir,
     pub emoji: DynDir,
     pub syntax: DynDir,
 }

crates/treehouse/src/generate.rs

@@ -180,31 +180,32 @@ fn parse_trees(
     Ok((treehouse, parsed_trees))
 }
 
-// TODO: Generation of pages in static/html
-//
-// for (name, &file_id) in &template_file_ids {
-//     let filename = name.rsplit_once('/').unwrap_or(("", name)).1;
-//     if !filename.starts_with('_') {
-//         let templated_html = match handlebars.render(name, &base_template_data) {
-//             Ok(html) => html,
-//             Err(error) => {
-//                 Self::wrangle_handlebars_error_into_diagnostic(
-//                     treehouse,
-//                     &mut global_diagnostics,
-//                     file_id,
-//                     error.line_no,
-//                     error.column_no,
-//                     error.desc,
-//                 )?;
-//                 continue;
-//             }
-//         };
-//         std::fs::write(
-//             paths.template_target_dir.join(name).with_extension("html"),
-//             templated_html,
-//         )?;
-//     }
-// }
+fn generate_simple_template(
+    sources: &Sources,
+    handlebars: &Handlebars,
+    template_name: &str,
+) -> anyhow::Result<String> {
+    let base_template_data = BaseTemplateData {
+        config: &sources.config,
+        import_map: serde_json::to_string_pretty(&sources.import_map)
+            .expect("import map should be serializable to JSON"),
+        season: Season::current(),
+    };
+    handlebars
+        .render(template_name, &base_template_data)
+        .context("failed to render template")
+}
+
+fn generate_simple_template_or_error(
+    sources: &Sources,
+    handlebars: &Handlebars,
+    template_name: &str,
+) -> String {
+    match generate_simple_template(sources, handlebars, template_name) {
+        Ok(html) => html,
+        Err(error) => format!("error: {error:?}"),
+    }
+}
 
 fn generate_tree(
     sources: &Sources,
@@ -249,7 +250,7 @@ fn generate_tree(
                 .thumbnail
                 .as_ref()
                 .map(|thumbnail| Thumbnail {
-                    url: sources.config.pic_url(&*dirs.pics, &thumbnail.id),
+                    url: sources.config.pic_url(&*dirs.pic, &thumbnail.id),
                     alt: thumbnail.alt.clone(),
                 }),
             scripts: roots.attributes.scripts.clone(),
@@ -311,7 +312,7 @@ impl Sources {
         .context("failed to deserialize config")?;
         config.site = std::env::var("TREEHOUSE_SITE").unwrap_or(config.site);
         config.autopopulate_emoji(&*dirs.emoji)?;
-        config.autopopulate_pics(&*dirs.pics)?;
+        config.autopopulate_pics(&*dirs.pic)?;
         config.load_syntaxes(&*dirs.syntax)?;
 
         info!("parsing tree files");
@@ -391,6 +392,8 @@ impl TreehouseDir {
 
 impl Dir for TreehouseDir {
     fn dir(&self, path: &VPath) -> Vec<DirEntry> {
+        // NOTE: This does not include simple templates, because that's not really needed right now.
+
         let mut index = &self.dir_index;
         for component in path.segments() {
             if let Some(child) = index.children.get(component) {
@@ -424,8 +427,28 @@ impl Dir for TreehouseDir {
             path.set_extension("");
         }
 
-        self.sources.parsed_trees.get(&path).map(|parsed_tree| {
-            generate_tree_or_error(&self.sources, &self.dirs, &self.handlebars, parsed_tree).into()
+        self.sources
+            .parsed_trees
+            .get(&path)
+            .map(|parsed_tree| {
+                generate_tree_or_error(&self.sources, &self.dirs, &self.handlebars, parsed_tree)
+                    .into()
+            })
+            .or_else(|| {
+                if path.file_name().is_some_and(|s| !s.starts_with('_')) {
+                    let template_name = path.with_extension("hbs");
+                    if self.handlebars.has_template(template_name.as_str()) {
+                        return Some(
+                            generate_simple_template_or_error(
+                                &self.sources,
+                                &self.handlebars,
+                                template_name.as_str(),
+                            )
+                            .into(),
+                        );
+                    }
+                }
+                None
             })
     }
 

crates/treehouse/src/html/djot.rs

@@ -375,7 +375,7 @@ impl<'a> Writer<'a> {
                                 let pic_url = self
                                     .renderer
                                     .config
-                                    .pic_url(&*self.renderer.dirs.pics, placeholder_pic_id);
+                                    .pic_url(&*self.renderer.dirs.pic, placeholder_pic_id);
                                 write_attr(&pic_url, out);
                                 out.push('"');
 
@@ -648,7 +648,7 @@ impl<'a> Writer<'a> {
                     )
                 }),
             "page" => Some(config.page_url(linked)),
-            "pic" => Some(config.pic_url(&*self.renderer.dirs.pics, linked)),
+            "pic" => Some(config.pic_url(&*self.renderer.dirs.pic, linked)),
             _ => None,
         })
     }

crates/treehouse/src/main.rs

@@ -54,7 +54,7 @@ async fn fallible_main() -> anyhow::Result<()> {
         content: Cd::new(src.clone(), VPathBuf::new("content")).to_dyn(),
         static_: Cd::new(src.clone(), VPathBuf::new("static")).to_dyn(),
         template: Cd::new(src.clone(), VPathBuf::new("template")).to_dyn(),
-        pics: Cd::new(src.clone(), VPathBuf::new("static/pics")).to_dyn(),
+        pic: Cd::new(src.clone(), VPathBuf::new("static/pic")).to_dyn(),
         emoji: Cd::new(src.clone(), VPathBuf::new("static/emoji")).to_dyn(),
         syntax: Cd::new(src.clone(), VPathBuf::new("static/syntax")).to_dyn(),
     });

crates/treehouse/src/tree/mini_template.rs

@@ -203,7 +203,7 @@ impl Renderer<'_> {
     ) -> Result<String, InvalidTemplate> {
         let (function, arguments) = template.split_once(' ').unwrap_or((template, ""));
         match function {
-            "pic" => Ok(config.pic_url(&*dirs.pics, arguments)),
+            "pic" => Ok(config.pic_url(&*dirs.pic, arguments)),
             "include_static" => VPath::try_new(arguments)
                 .ok()
                 .and_then(|vpath| dirs.static_.content(vpath))

crates/treehouse/src/vfs/path.rs

@@ -217,6 +217,9 @@ impl VPathBuf {
 
             let range = self.path.len() - chop_len..;
             self.path.replace_range(range, new_extension);
+        } else {
+            self.path.push('.');
+            self.path.push_str(new_extension);
         }
     }
 }

template/sandbox.hbs

@@ -3,6 +3,8 @@
 <html>
 
 <head>
+    <meta charset="UTF-8">
+    
     <title>treehouse iframe sandbox</title>
 
     <link rel="stylesheet" href="{{ asset 'css/base.css' }}">