feat!: implemented answer buttons

- Also you can /init without restarting bot

BREAKING CHANGE: Changed type of Data::discord to
Arc<Mutex<DiscordConfig>, removed field pending_answers from
DiscordConfig

discord/src/commands/answer.rs

@@ -1,4 +1,4 @@
-use poise::serenity_prelude::{Attachment, CreateAttachment, CreateMessage, Mentionable};
+use poise::serenity_prelude::{Attachment, ComponentInteractionCollector, CreateActionRow, CreateAttachment, CreateButton, CreateMessage, EditMessage, Mentionable};
 
 use crate::{Context, Error};
 
@@ -14,7 +14,11 @@ pub async fn answer(
     #[description = "Text answer to the quest"]
     text: Option<String>,
     #[description = "Attachment answer to the quest"]
-    files: Vec<Attachment>,
+    file1: Option<Attachment>,
+    #[description = "Attachment answer to the quest"]
+    file2: Option<Attachment>,
+    #[description = "Attachment answer to the quest"]
+    file3: Option<Attachment>,
 ) -> Result<(), Error> {
     let quests = ctx.data().config.load_quests();
     let Some(quest) = quests.iter().find(|q| q.id == quest_id) else {
@@ -22,6 +26,13 @@ pub async fn answer(
         ctx.reply(reply_string).await?;
         return Ok(());
     };
+    
+    let mut files: Vec<Attachment> = Vec::new();
+    for file in [file1, file2, file3] {
+        if let Some(f) = file {
+            files.push(f);
+        }
+    }
 
     if text.is_none() && files.len() == 0 {
         let reply_string = "Please specify text or at least one attachment.".to_string();
@@ -38,7 +49,7 @@ pub async fn answer(
         "\nPassed answer has attachments.".to_string()
     };
 
-    let content = format!("# From: {user}\n\
+    let content = format!("## From: {user}\n\
         ### Quest #{quest_id}: {quest_name}\n\
         ### Expected answer:\n\
         ||{quest_answer}||{text_ans}{attachment_notice}",
@@ -53,16 +64,47 @@ pub async fn answer(
         let attachment = CreateAttachment::url(ctx, &file.url).await?;
         attachments.push(attachment);
     }
+    
+    let ctx_id = ctx.id();
+    let approve_id = format!("{ctx_id}approve");
+    let reject_id = format!("{ctx_id}reject");
 
-    let ans_channel = ctx.data().discord.answers_channel;
-    let message = CreateMessage::new()
-        .content(content)
-        .files(attachments);
+    let components = CreateActionRow::Buttons(vec![
+        CreateButton::new(&approve_id).label("Approve".to_string()),
+        CreateButton::new(&reject_id).label("Reject".to_string()),
+    ]);
 
-    ans_channel.send_message(ctx, message).await?;
+    let ans_channel = {
+        let discord = ctx.data().discord.clone();
+        let guard = discord.lock().expect("should not be locked");
+        guard.answers_channel
+    };
+    let builder = CreateMessage::new()
+        .content(content.clone())
+        .files(attachments)
+        .components(vec![components]);
+
+    let mut message = ans_channel.send_message(ctx, builder).await?;
 
     let reply_string = "Your answer has been posted.".to_string();
     ctx.reply(reply_string).await?;
 
+    while let Some(press) = ComponentInteractionCollector::new(ctx)
+        .filter(move |press| press.data.custom_id.starts_with(&ctx_id.to_string()))
+        .await
+    {
+        let admin = press.user.mention();
+        let is_approved = press.data.custom_id == approve_id;
+        let content = if is_approved {
+            format!("{content}\nApproved by: {admin}")
+        } else {
+            format!("~~{content}~~\nRejected by: {admin}")
+        };
+
+        let builder = EditMessage::new().content(content).components(Vec::new());
+        message.edit(ctx, builder).await?;
+        return Ok(());
+    }
+
     Ok(())
 }