check prefix and order commands properly for regex

src/framework.rs

@@ -14,9 +14,13 @@ use serenity::{
 use log::{
     warn,
     error,
+    debug,
+    info,
 };
 
-use regex::Regex;
+use regex::{
+    Regex, Match
+};
 
 use std::{
     collections::HashMap,
@@ -24,6 +28,7 @@ use std::{
 };
 
 use serenity::framework::standard::CommandFn;
+use crate::SQLPool;
 
 #[derive(Debug)]
 pub enum PermissionLevel {
@@ -90,11 +95,20 @@ impl RegexFramework {
     }
 
     pub fn build(mut self) -> Self {
-        let command_names = self.commands
-            .keys()
-            .map(|k| &k[..])
-            .collect::<Vec<&str>>()
-            .join("|");
+        let command_names;
+
+        {
+            let mut command_names_vec = self.commands
+                .keys()
+                .map(|k| &k[..])
+                .collect::<Vec<&str>>();
+
+            command_names_vec.sort_unstable_by(|a, b| b.len().cmp(&a.len()));
+
+            command_names = command_names_vec.join("|");
+        }
+
+        info!("Command names: {}", command_names);
 
         let match_string = r#"^(?:(?:<@ID>\s+)|(?:<@!ID>\s+)|(?P<prefix>\S{1,5}?))(?P<cmd>COMMANDS)(?:$|\s+(?P<args>.*))$"#
             .replace("COMMANDS", command_names.as_str())
@@ -135,6 +149,34 @@ impl Framework for RegexFramework {
             })
         }
 
+        async fn check_prefix(ctx: &Context, guild_id: u64, prefix_opt: Option<Match<'_>>) -> bool {
+            if let Some(prefix) = prefix_opt {
+                let pool = ctx.data.read().await
+                    .get::<SQLPool>().cloned().expect("Could not get SQLPool from data");
+
+                match sqlx::query!("SELECT prefix FROM guilds WHERE id = ?", guild_id)
+                    .fetch_one(&pool)
+                    .await {
+                    Ok(row) => {
+                        prefix.as_str() == row.prefix
+                    }
+
+                    Err(sqlx::Error::RowNotFound) => {
+                        prefix.as_str() == "$"
+                    }
+
+                    Err(e) => {
+                        warn!("Unexpected error in prefix query: {:?}", e);
+
+                        false
+                    }
+                }
+            }
+            else {
+                true
+            }
+        }
+
         // gate to prevent analysing messages unnecessarily
         if (msg.author.bot && self.ignore_bots) ||
             msg.tts                             ||
@@ -147,25 +189,26 @@ impl Framework for RegexFramework {
         // Guild Command
         else if let (Some(guild), Some(Channel::Guild(channel))) = (msg.guild(&ctx).await, msg.channel(&ctx).await) {
 
-            if let Some(full_match) = self.regex_matcher.captures(msg.content.as_str()) {
+            if let Some(full_match) = self.regex_matcher.captures(&msg.content[..]) {
 
-                match check_self_permissions(&ctx, &guild, &channel).await {
-                    Ok(perms) => match perms {
-                        PermissionCheck::All => {
+                if check_prefix(&ctx, *guild.id.as_u64(), full_match.name("prefix")).await {
 
+                    debug!("Prefix matched on {}", msg.content);
+
+                    match check_self_permissions(&ctx, &guild, &channel).await {
+                        Ok(perms) => match perms {
+                            PermissionCheck::All => {}
+
+                            PermissionCheck::Basic => {}
+
+                            PermissionCheck::None => {
+                                warn!("Missing enough permissions for guild {}", guild.id);
+                            }
                         }
 
-                        PermissionCheck::Basic => {
-
+                        Err(e) => {
+                            error!("Error occurred getting permissions in guild {}: {:?}", guild.id, e);
                         }
-
-                        PermissionCheck::None => {
-                            warn!("Missing enough permissions for guild {}", guild.id);
-                        }
-                    }
-
-                    Err(e) => {
-                        error!("Error occurred getting permissions in guild {}: {:?}", guild.id, e);
                     }
                 }
             }

src/main.rs

@@ -21,6 +21,7 @@ use regex_command_attr::command;
 use sqlx::{
     Pool,
     mysql::{
+        MySqlPool,
         MySqlConnection,
     }
 };
@@ -46,14 +47,12 @@ impl TypeMapKey for ReqwestClient {
     type Value = Arc<reqwest::Client>;
 }
 
-static THEME_COLOR: u32 = 0x00e0f3;
+static THEME_COLOR: u32 = 0x8fb677;
 
 #[tokio::main]
 async fn main() -> Result<(), Box<dyn std::error::Error + Send + Sync>> {
     dotenv()?;
 
-    println!("{:?}", HELP_COMMAND);
-
     let framework = RegexFramework::new(env::var("CLIENT_ID").expect("Missing CLIENT_ID from environment").parse()?)
         .ignore_bots(true)
         .default_prefix("$")
@@ -66,6 +65,15 @@ async fn main() -> Result<(), Box<dyn std::error::Error + Send + Sync>> {
         .framework(framework)
         .await.expect("Error occurred creating client");
 
+    {
+        let pool = MySqlPool::new(&env::var("DATABASE_URL").expect("Missing DATABASE_URL from environment")).await.unwrap();
+
+        let mut data = client.data.write().await;
+
+        data.insert::<SQLPool>(pool);
+        data.insert::<ReqwestClient>(Arc::new(reqwest::Client::new()));
+    }
+
     client.start_autosharded().await?;
 
     Ok(())