feat: Copy THEME/assets to out_dir

src/template_engine.rs

@@ -5,7 +5,7 @@ use anyhow::Result;
 use camino::Utf8Path;
 use feed_rs::model::Feed;
 use std::collections::HashMap;
-use std::fs::File;
+use std::fs::{copy, create_dir_all, File};
 use tera::{from_value, Tera};
 
 pub fn build(config: &Config, feed_store: &mut FeedStore) -> Result<()> {
@@ -32,6 +32,35 @@ pub fn build(config: &Config, feed_store: &mut FeedStore) -> Result<()> {
         let file = File::create(format!("{out_dir}/{name}"))?;
         tera.render_to(name, &context, file)?;
     }
+
+    // Copy static assets from theme, if any
+    if let Some(theme) = &config.theme {
+        let assets_dir = config.templates_dir.join(theme).join("assets");
+        if assets_dir.is_dir() {
+            copy_assets(&assets_dir, &out_dir)?;
+        }
+    }
+
+    Ok(())
+}
+
+/// Recursively copy assets from one dir to another
+///
+/// Symlinks are ignored.
+fn copy_assets(orig: &Utf8Path, dest: &Utf8Path) -> Result<()> {
+    if orig.is_dir() {
+        if !dest.is_dir() {
+            create_dir_all(dest)?;
+        }
+
+        for entry in orig.read_dir_utf8()? {
+            let entry = entry?;
+            copy_assets(entry.path(), &dest.join(entry.file_name()))?;
+        }
+    } else if orig.is_file() {
+        copy(orig, dest)?;
+    }
+
     Ok(())
 }