Use discord name tag colours for bridged messages to matrix

src/discord.rs

@@ -25,9 +25,22 @@ struct DiscordHandler {
 }
 
 async fn get_message_author(ctx: &Context, message: &Message) -> MessageAuthor {
+    async fn user_tag_color(ctx: &Context, message: &Message) -> Option<String> {
+        Some(
+            message
+                .member(ctx)
+                .await
+                .ok()?
+                .colour(ctx)
+                .await?
+                .hex()
+                .to_ascii_lowercase(),
+        )
+    }
+
     MessageAuthor {
         display_name: message
-            .author_nick(&ctx)
+            .author_nick(ctx)
             .await
             .unwrap_or_else(|| message.author.name.clone()),
         avatar_url: message
@@ -35,6 +48,7 @@ async fn get_message_author(ctx: &Context, message: &Message) -> MessageAuthor {
             .static_avatar_url()
             .unwrap_or_else(|| message.author.default_avatar_url()),
         service_name: "discord".to_string(),
+        display_color: user_tag_color(ctx, message).await,
     }
 }
 

src/matrix.rs

@@ -104,6 +104,7 @@ impl MatrixHandler {
                             .to_string()
                     }),
                 service_name: "matrix".to_string(),
+                display_color: None,
             })
         } else {
             None
@@ -250,10 +251,9 @@ fn generate_html_content(content: &[MessageComponent], author: &MessageAuthor) -
         format_discord(content)
     );
 
-    // TODO: Do we want to do something with different users' discord name colors? That could be a neat way
-    // to differentiate people easily without being able to see avatars
     let html_message = format!(
-        r##"<p><font data-mx-color="#9a9a9a" data-mx-bg-color="#000000">{} <small>({})</small></font>:</p> <p>{}</p>"##,
+        r##"<strong><font data-mx-color="#{}">{} <small>({})</small></font>:</strong> {}"##,
+        author.display_color.as_deref().unwrap_or("ffffff"),
         &author.display_name,
         &author.service_name,
         format_matrix(content),

src/messages.rs

@@ -12,6 +12,7 @@ pub struct MessageAuthor {
     pub display_name: String,
     pub avatar_url: String,
     pub service_name: String,
+    pub display_color: Option<String>,
 }
 
 pub struct SentMessage {