Theming (#624)

* Theming

- Custom CSS for blogs
- Custom themes for instance
- New dark theme
- UI to choose your instance theme
- Option to disable blog themes if you prefer to only have the instance theme
- UI to choose a blog theme

plume-models/src/blogs.rs

@@ -44,6 +44,7 @@ pub struct Blog {
     pub summary_html: SafeString,
     pub icon_id: Option<i32>,
     pub banner_id: Option<i32>,
+    pub theme: Option<String>,
 }
 
 #[derive(Default, Insertable)]
@@ -61,6 +62,7 @@ pub struct NewBlog {
     pub summary_html: SafeString,
     pub icon_id: Option<i32>,
     pub banner_id: Option<i32>,
+    pub theme: Option<String>,
 }
 
 const BLOG_PREFIX: &str = "~";
@@ -272,7 +274,7 @@ impl Blog {
     pub fn icon_url(&self, conn: &Connection) -> String {
         self.icon_id
             .and_then(|id| Media::get(conn, id).and_then(|m| m.url()).ok())
-            .unwrap_or_else(|| "/static/default-avatar.png".to_string())
+            .unwrap_or_else(|| "/static/images/default-avatar.png".to_string())
     }
 
     pub fn banner_url(&self, conn: &Connection) -> Option<String> {
@@ -392,6 +394,7 @@ impl FromId<PlumeRocket> for Blog {
                         .summary_string()
                         .unwrap_or_default(),
                 ),
+                theme: None,
             },
         )
     }

plume-models/src/config.rs

@@ -14,6 +14,7 @@ pub struct Config {
     pub search_index: String,
     pub rocket: Result<RocketConfig, RocketError>,
     pub logo: LogoConfig,
+    pub default_theme: String,
 }
 
 #[derive(Debug, Clone)]
@@ -199,5 +200,6 @@ lazy_static! {
         search_index: var("SEARCH_INDEX").unwrap_or_else(|_| "search_index".to_owned()),
         rocket: get_rocket_config(),
         logo: LogoConfig::default(),
+        default_theme: var("DEFAULT_THEME").unwrap_or_else(|_| "default-light".to_owned()),
     };
 }

plume-models/src/instance.rs

@@ -186,6 +186,60 @@ impl Instance {
             .get_result(conn)
             .map_err(Error::from)
     }
+
+    /// Returns a list of the local instance themes (all files matching `static/css/NAME/theme.css`)
+    ///
+    /// The list only contains the name of the themes, without their extension or full path.
+    pub fn list_themes() -> Result<Vec<String>> {
+        // List all the files in static/css
+        std::path::Path::new("static")
+            .join("css")
+            .read_dir()
+            .map(|files| {
+                files
+                    .filter_map(std::result::Result::ok)
+                    // Only keep actual directories (each theme has its own dir)
+                    .filter(|f| f.file_type().map(|t| t.is_dir()).unwrap_or(false))
+                    // Only keep the directory name (= theme name)
+                    .filter_map(|f| {
+                        f.path()
+                            .file_name()
+                            .and_then(std::ffi::OsStr::to_str)
+                            .map(std::borrow::ToOwned::to_owned)
+                    })
+                    // Ignore the one starting with "blog-": these are the blog themes
+                    .filter(|f| !f.starts_with("blog-"))
+                    .collect()
+            })
+            .map_err(Error::from)
+    }
+
+    /// Returns a list of the local blog themes (all files matching `static/css/blog-NAME/theme.css`)
+    ///
+    /// The list only contains the name of the themes, without their extension or full path.
+    pub fn list_blog_themes() -> Result<Vec<String>> {
+        // List all the files in static/css
+        std::path::Path::new("static")
+            .join("css")
+            .read_dir()
+            .map(|files| {
+                files
+                    .filter_map(std::result::Result::ok)
+                    // Only keep actual directories (each theme has its own dir)
+                    .filter(|f| f.file_type().map(|t| t.is_dir()).unwrap_or(false))
+                    // Only keep the directory name (= theme name)
+                    .filter_map(|f| {
+                        f.path()
+                            .file_name()
+                            .and_then(std::ffi::OsStr::to_str)
+                            .map(std::borrow::ToOwned::to_owned)
+                    })
+                    // Only keep the one starting with "blog-": these are the blog themes
+                    .filter(|f| f.starts_with("blog-"))
+                    .collect()
+            })
+            .map_err(Error::from)
+    }
 }
 
 #[cfg(test)]

plume-models/src/lib.rs

@@ -33,6 +33,7 @@ extern crate serde_json;
 #[macro_use]
 extern crate tantivy;
 extern crate url;
+extern crate walkdir;
 extern crate webfinger;
 extern crate whatlang;
 

plume-models/src/schema.rs

@@ -47,6 +47,7 @@ table! {
         summary_html -> Text,
         icon_id -> Nullable<Int4>,
         banner_id -> Nullable<Int4>,
+        theme -> Nullable<Varchar>,
     }
 }
 
@@ -216,6 +217,8 @@ table! {
         last_fetched_date -> Timestamp,
         fqn -> Text,
         summary_html -> Text,
+        preferred_theme -> Nullable<Varchar>,
+        hide_custom_css -> Bool,
     }
 }
 

plume-models/src/users.rs

@@ -73,6 +73,8 @@ pub struct User {
     pub last_fetched_date: NaiveDateTime,
     pub fqn: String,
     pub summary_html: SafeString,
+    pub preferred_theme: Option<String>,
+    pub hide_custom_css: bool,
 }
 
 #[derive(Default, Insertable)]
@@ -202,30 +204,6 @@ impl User {
             .map_err(Error::from)
     }
 
-    pub fn update(
-        &self,
-        conn: &Connection,
-        name: String,
-        email: String,
-        summary: String,
-    ) -> Result<User> {
-        diesel::update(self)
-            .set((
-                users::display_name.eq(name),
-                users::email.eq(email),
-                users::summary_html.eq(utils::md_to_html(
-                    &summary,
-                    None,
-                    false,
-                    Some(Media::get_media_processor(conn, vec![self])),
-                )
-                .0),
-                users::summary.eq(summary),
-            ))
-            .execute(conn)?;
-        User::get(conn, self.id)
-    }
-
     pub fn count_local(conn: &Connection) -> Result<i64> {
         users::table
             .filter(users::instance_id.eq(Instance::get_local()?.id))
@@ -668,7 +646,7 @@ impl User {
     pub fn avatar_url(&self, conn: &Connection) -> String {
         self.avatar_id
             .and_then(|id| Media::get(conn, id).and_then(|m| m.url()).ok())
-            .unwrap_or_else(|| "/static/default-avatar.png".to_string())
+            .unwrap_or_else(|| "/static/images/default-avatar.png".to_string())
     }
 
     pub fn webfinger(&self, conn: &Connection) -> Result<Webfinger> {
@@ -1076,27 +1054,6 @@ pub(crate) mod tests {
         });
     }
 
-    #[test]
-    fn update() {
-        let conn = &db();
-        conn.test_transaction::<_, (), _>(|| {
-            let inserted = fill_database(conn);
-            let updated = inserted[0]
-                .update(
-                    conn,
-                    "new name".to_owned(),
-                    "em@il".to_owned(),
-                    "<p>summary</p><script></script>".to_owned(),
-                )
-                .unwrap();
-            assert_eq!(updated.display_name, "new name");
-            assert_eq!(updated.email.unwrap(), "em@il");
-            assert_eq!(updated.summary_html.get(), "<p>summary</p>");
-
-            Ok(())
-        });
-    }
-
     #[test]
     fn auth() {
         let conn = &db();