Tentative embed fix via reuploading

src/commands/challenge.rs

@@ -93,7 +93,7 @@ pub async fn submit(ctx: Context<'_>, submission: serenity::Attachment) -> Resul
     for (i, submission) in submission_data.iter_mut().enumerate() {
         if is_matching_submission(&submission, author) {
             existing_submitter = true;
-            images = submission["images"].as_array_mut().unwrap().clone();
+            images = submission["images"].as_array_mut().unwrap().clone().iter().map(|value| value.to_string()).collect();
             for attachment in attachments.iter() {
                 let extension;
                 if let Some(content_type) = &attachment.content_type {
@@ -201,7 +201,8 @@ pub async fn submit(ctx: Context<'_>, submission: serenity::Attachment) -> Resul
         let invite = if data.contains_key("invite") {
             Some(data["invite"].as_str().unwrap())
         } else {
-            None }; for image in images.iter() {
+            None };
+        for image in images.iter() {
             for (other_guild_id, data) in guild_data.iter() {
                 let here = other_guild_id.eq(&ctx.guild_id().unwrap().as_u64().to_string());
                 if !repost_here && here {
@@ -225,7 +226,11 @@ pub async fn submit(ctx: Context<'_>, submission: serenity::Attachment) -> Resul
                     .await
                     .unwrap()
                     .accent_colour;
+                let mut pathbuf = std::path::PathBuf::new();
+                pathbuf.push(&submission_images_dir);
+                pathbuf.push(&image);
                 channel.send_message(&ctx.discord().http, |m| {
+                    m.add_file(&pathbuf);
                     m.embed(|e| {
                         let username = format!("{}#{}", author.name, author.discriminator);
                         let n = get_challenge_number();
@@ -244,7 +249,7 @@ pub async fn submit(ctx: Context<'_>, submission: serenity::Attachment) -> Resul
                             .name(username)
                             .url(format!("https://discord.com/users/{}", author.id));
                         e.set_author(embed_author);
-                        e.image(format!("https://tegakituesday.com/{n}/{image}"));
+                        e.image(format!("attachment://{image}"));
                         if let Some(accent_color) = accent_color {
                             e.color(accent_color);
                         }