message sorting

Cargo.toml

@@ -9,5 +9,6 @@ edition = "2021"
 eframe = "0.26.2"
 futures = "0.3.30"
 image = "0.24.9"
+chrono = "0.4"
 serenity = { version = "0.9.0-rc.2", default-features = false, features = ["client", "gateway", "model", "builder", "rustls_backend", "cache", "http"] }
 tokio = {features =  ["macros"], version = "0.2"}

src/bot.rs

@@ -29,15 +29,16 @@ struct Handler {
 
 #[async_trait]
 impl EventHandler for Handler {
-	async fn message(&self, ctx: Context, msg: Message) {
+	async fn message(&self, context: Context, msg: Message) {
 		println!("bot : message received : '{}' from {}", msg.content, msg.author);
 		if msg.content == HELP_COMMAND {
-			if let Err(why) = msg.channel_id.say(&ctx.http, HELP_MESSAGE).await {
+			if let Err(why) = msg.channel_id.say(&context.http, HELP_MESSAGE).await {
 				eprintln!("bot : Error sending message: {:?}", why);
 				return
 			}
 			println!("bot : successfuly sent reply");
 		}
+		
 	}
 
 	async fn ready(&self, _context: Context, ready: Ready) {
@@ -140,7 +141,7 @@ async fn get_channels(context: &Context, guild_id_str: String) -> Result<(), Str
 			return Err("guild not found".to_string())
 		}
 	} else {
-		return Err("failed to retriev sender".to_string())
+		return Err("failed to retrieve sender".to_string())
 	}
 	Ok(())				
 }
@@ -163,7 +164,7 @@ async fn get_messages(context: &Context, guild_id_str: String, channel_id_str: S
 				
 		for message in &messages {
 			let author_name = message.author.name.clone();
-			let discord_message = discord_structure::Message::new(message.id.to_string(), channel_id_str.clone(), guild_id_str.clone(), author_name, message.content.clone(), message.timestamp.to_string());
+			let discord_message = discord_structure::Message::new(message.id.to_string(), channel_id_str.clone(), guild_id_str.clone(), author_name, message.content.clone(), message.timestamp.to_rfc2822());
 			sender.send(postman::Packet::Message(discord_message)).map_err(|e| e.to_string())?;
 		}
 		

src/discord_structure.rs

@@ -1,3 +1,5 @@
+use chrono::{DateTime, ParseError};
+
 #[derive(PartialEq, Clone)]
 pub struct Guild {
 	pub name: String,
@@ -34,8 +36,35 @@ impl Channel {
 	}
 	
 	pub fn insert(&mut self, message: Message) {
-		self.messages.insert(1, message);
+		match self.get_index_from_timestamp(&message.timestamp) {
-		println!("discord_structure : need to compare timestamp");
+			Ok(index) => {
+				self.messages.insert(index, message);
+			}
+			Err(why) => {
+				eprintln!("discord_structure : timestamp error : {}", why);
+				self.messages.push(message);
+			}
+		}
+		
+	}
+	
+	pub fn get_index_from_timestamp(&self, message_timestamp: &str) -> Result<usize, ParseError> {
+		let new_timestamp = DateTime::parse_from_rfc2822(message_timestamp)?;
+		
+		let mut index: usize = 0;
+				
+		for i in 0..self.messages.len() {
+			if self.messages[i].timestamp == "" {
+				index = i + 1;
+				continue
+			}
+			let current_timestamp = DateTime::parse_from_rfc2822(&self.messages[i].timestamp)?;
+			
+			if new_timestamp > current_timestamp {
+				index = i + 1;
+			}
+		}
+		Ok(index)
 	}
 	
 	pub fn end(&mut self) {