From d6b479ec15616ae48dfcdceaa254c2bfa86e92bf Mon Sep 17 00:00:00 2001
From: Peter Cai <peter@typeblog.net>
Date: Tue, 14 Apr 2020 21:11:21 +0800
Subject: [PATCH] support per-post theme_config in custom metadata

---
 src/blog.rs   | 4 +++-
 src/render.rs | 6 ++++--
 src/sn.rs     | 7 ++++++-
 3 files changed, 13 insertions(+), 4 deletions(-)

diff --git a/src/blog.rs b/src/blog.rs
index 6f32ed9..d9bf530 100644
--- a/src/blog.rs
+++ b/src/blog.rs
@@ -71,7 +71,9 @@ pub struct Post {
     // We keep the original content here
     // so that we could make changes to the Markdown parser
     // in the future; we won't be stuck with a parsed version
-    pub content: String
+    pub content: String,
+    // Some arbitrary data that could be used by the theme
+    pub theme_config: Option<serde_json::Value>
 }
 
 impl Post {
diff --git a/src/render.rs b/src/render.rs
index 2386d40..859c7bd 100644
--- a/src/render.rs
+++ b/src/render.rs
@@ -94,7 +94,8 @@ struct PostContext {
     title: String,
     url: String,
     timestamp: u64,
-    content: String
+    content: String,
+    theme_config: Option<serde_json::Value>
 }
 
 lazy_static! {
@@ -228,7 +229,8 @@ pub async fn render_post(url: Url, post: blog::Post) -> MyResult<String> {
         title: post.title,
         url: post.url,
         timestamp: post.timestamp,
-        content: post_cache.content
+        content: post_cache.content,
+        theme_config: post.theme_config
     };
 
     HANDLEBARS.render("post.hbs", &context)
diff --git a/src/sn.rs b/src/sn.rs
index df88045..a76c7b4 100644
--- a/src/sn.rs
+++ b/src/sn.rs
@@ -96,6 +96,8 @@ struct CustomMetadata {
     // `unlist` takes precedence over this alias
     unlisted: Option<bool>,
     url: Option<String>,
+    // Same as Post.theme_config
+    theme_config: Option<serde_json::Value>,
     timestamp: Option<String> // Should be something `js_sys::Date::parse` could handle
 }
 
@@ -187,11 +189,13 @@ async fn create_or_update_post(req: Request, url: Url) -> MyResult<Response> {
     let text = data.items[0].content.text.clone();
     let title = data.items[0].content.title.clone();
     let (custom_metadata, text) = parse_custom_metadata_from_content(text);
+    let theme_config = custom_metadata.as_ref().and_then(|it| it.theme_config.clone());
     let metadata = build_metadata(custom_metadata, &uuid, &title);
     let post = match blog::Post::find_by_uuid(&uuid).await {
         Ok(mut post) => {
             post.content = text;
             post.title = title;
+            post.theme_config = theme_config;
 
             // Update metadata if custom ones are present
             if metadata.has_custom_url {
@@ -210,7 +214,8 @@ async fn create_or_update_post(req: Request, url: Url) -> MyResult<Response> {
                 uuid: uuid,
                 title: title,
                 content: text,
-                timestamp: metadata.timestamp
+                timestamp: metadata.timestamp,
+                theme_config: theme_config
             }
         }
     };