soundfx-bot/src/main.rs

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Rust
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use serenity::{
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client::{
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bridge::{
gateway::GatewayIntents,
voice::ClientVoiceManager,
},
Client, Context,
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},
framework::standard::{
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Args, CommandResult, StandardFramework,
macros::{
command, group,
}
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},
model::{
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channel::Message,
guild::Guild,
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},
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prelude::{
Mutex as SerenityMutex,
*
},
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voice::ffmpeg,
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};
use sqlx::{
Pool,
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mysql::{
MySqlPool,
MySqlConnection,
}
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};
use dotenv::dotenv;
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use tokio::{
fs::File,
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process::Command,
sync::RwLockReadGuard,
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};
use std::{
env,
path::Path,
sync::Arc,
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time::Duration,
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};
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use std::fmt::Formatter;
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struct SQLPool;
impl TypeMapKey for SQLPool {
type Value = Pool<MySqlConnection>;
}
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struct VoiceManager;
impl TypeMapKey for VoiceManager {
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type Value = Arc<SerenityMutex<ClientVoiceManager>>;
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}
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static THEME_COLOR: u32 = 0x00e0f3;
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#[group]
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#[commands(play, info, help, change_volume, change_prefix, upload_new_sound)]
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struct General;
struct Sound {
name: String,
id: u32,
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plays: u32,
public: bool,
server_id: u64,
uploader_id: u64,
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src: Vec<u8>,
}
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#[derive(Debug)]
enum ErrorTypes {
InvalidFile,
}
impl std::error::Error for ErrorTypes {}
impl std::fmt::Display for ErrorTypes {
fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
write!(f, "ErrorTypes")
}
}
impl Sound {
async fn search_for_sound(query: &str, guild_id: u64, user_id: u64, db_pool: MySqlPool) -> Result<Sound, sqlx::Error> {
fn extract_id(s: &str) -> Option<u32> {
if s.to_lowercase().starts_with("id:") {
match s[3..].parse::<u32>() {
Ok(id) => Some(id),
Err(_) => None
}
}
else {
None
}
}
if let Some(id) = extract_id(&query[3..]) {
let sound = sqlx::query_as_unchecked!(
Self,
"
SELECT *
FROM sounds
WHERE id = ? AND (
public = 1 OR
uploader_id = ? OR
server_id = ?
)
LIMIT 1
",
id, user_id, guild_id
)
.fetch_one(&db_pool)
.await?;
Ok(sound)
}
else {
let name = query;
let sound = sqlx::query_as_unchecked!(
Self,
"
SELECT *
FROM sounds
WHERE name = ? AND (
public = 1 OR
uploader_id = ? OR
server_id = ?
)
ORDER BY rand(), public = 1, server_id = ?, uploader_id = ?
LIMIT 1
",
name, user_id, guild_id, guild_id, user_id
)
.fetch_one(&db_pool)
.await?;
Ok(sound)
}
}
async fn store_sound_source(&self) -> Result<String, Box<dyn std::error::Error>> {
let caching_location = env::var("CACHING_LOCATION").unwrap_or(String::from("/tmp"));
let path_name = format!("{}/sound-{}", caching_location, self.id);
let path = Path::new(&path_name);
if !path.exists() {
use tokio::prelude::*;
let mut file = File::create(&path).await?;
file.write_all(self.src.as_ref()).await?;
}
Ok(path_name)
}
async fn commit(&self, db_pool: MySqlPool) -> Result<(), Box<dyn std::error::Error>> {
sqlx::query!(
"
UPDATE sounds
SET
plays = ?,
public = ?
WHERE
id = ?
",
self.plays, self.public, self.id
)
.execute(&db_pool)
.await?;
Ok(())
}
async fn create_anon(name: &str, src_url: &str, server_id: u64, user_id: u64, db_pool: MySqlPool) -> Result<u64, Box<dyn std::error::Error + Send>> {
async fn process_src(src_url: &str) -> Option<Vec<u8>> {
let future = Command::new("ffmpeg")
.arg("-i")
.arg(src_url)
.arg("-loglevel")
.arg("error")
.arg("-b:a")
.arg("28000")
.arg("-f")
.arg("opus")
.arg("pipe:1")
.output();
let output = future.await;
match output {
Ok(out) => {
if out.status.success() && out.stdout.len() < 1024 * 1024 {
Some(out.stdout)
}
else {
None
}
}
Err(_) => None,
}
}
let source = process_src(src_url).await;
match source {
Some(data) => {
match sqlx::query!(
"
INSERT INTO sounds (name, server_id, uploader_id, public, src)
VALUES (?, ?, ?, 1, ?)
",
name, server_id, user_id, data
)
.execute(&db_pool)
.await {
Ok(u) => Ok(u),
Err(e) => Err(Box::new(e))
}
}
None => Err(Box::new(ErrorTypes::InvalidFile))
}
}
}
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struct GuildData {
id: u64,
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pub name: Option<String>,
pub prefix: String,
pub volume: u8,
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}
impl GuildData {
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async fn get_from_id(guild_id: u64, db_pool: MySqlPool) -> Option<GuildData> {
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let guild = sqlx::query_as!(
GuildData,
"
SELECT *
FROM servers
WHERE id = ?
", guild_id
)
.fetch_one(&db_pool)
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.await;
match guild {
Ok(guild) => Some(guild),
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Err(_) => None,
}
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}
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async fn create_from_guild(guild: RwLockReadGuard<'_, Guild>, db_pool: MySqlPool) -> Result<GuildData, Box<dyn std::error::Error>> {
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let guild_data = sqlx::query!(
"
INSERT INTO servers (id, name)
VALUES (?, ?)
", guild.id.as_u64(), guild.name
)
.execute(&db_pool)
.await?;
Ok(GuildData {
id: *guild.id.as_u64(),
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name: Some(guild.name.clone()),
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prefix: String::from("?"),
volume: 100,
})
}
async fn commit(&self, db_pool: MySqlPool) -> Result<(), Box<dyn std::error::Error>> {
sqlx::query!(
"
UPDATE servers
SET
name = ?,
prefix = ?,
volume = ?
WHERE
id = ?
",
self.name, self.prefix, self.volume, self.id
)
.execute(&db_pool)
.await?;
Ok(())
}
}
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// create event handler for bot
struct Handler;
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#[serenity::async_trait]
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impl EventHandler for Handler {}
// entry point
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#[tokio::main]
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async fn main() -> Result<(), Box<dyn std::error::Error>> {
dotenv()?;
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let framework = StandardFramework::new()
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.configure(|c| c.dynamic_prefix(|ctx, msg| Box::pin(async move {
let pool = ctx.data.read().await
.get::<SQLPool>().cloned().expect("Could not get SQLPool from data");
match GuildData::get_from_id(*msg.guild_id.unwrap().as_u64(), pool).await {
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Some(guild) => Some(guild.prefix),
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None => Some(String::from("?"))
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}
})))
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.group(&GENERAL_GROUP);
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let mut client = Client::new_with_extras(
&env::var("DISCORD_TOKEN").expect("Missing token from environment"),
|extras| { extras
.framework(framework)
.event_handler(Handler)
.intents(GatewayIntents::GUILD_VOICE_STATES | GatewayIntents::GUILD_MESSAGES | GatewayIntents::GUILDS)
}).await.expect("Error occurred creating client");
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{
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let pool = MySqlPool::new(&env::var("DATABASE_URL").expect("No database URL provided")).await.unwrap();
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let mut data = client.data.write().await;
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data.insert::<SQLPool>(pool);
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data.insert::<VoiceManager>(Arc::clone(&client.voice_manager));
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}
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client.start().await?;
Ok(())
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}
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#[command("play")]
#[aliases("p")]
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async fn play(ctx: &mut Context, msg: &Message, args: Args) -> CommandResult {
let guild = match msg.guild(&ctx.cache).await {
Some(guild) => guild,
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None => {
return Ok(());
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}
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};
let guild_id = guild.read().await.id;
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let channel_to_join = guild.read().await
.voice_states.get(&msg.author.id)
.and_then(|voice_state| voice_state.channel_id);
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match channel_to_join {
Some(user_channel) => {
let search_term = args.rest();
let pool = ctx.data.read().await
.get::<SQLPool>().cloned().expect("Could not get SQLPool from data");
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let sound_res = Sound::search_for_sound(
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search_term,
*guild_id.as_u64(),
*msg.author.id.as_u64(),
pool).await;
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match sound_res {
Ok(sound) => {
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let fp = sound.store_sound_source().await?;
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let voice_manager_lock = ctx.data.read().await
.get::<VoiceManager>().cloned().expect("Could not get VoiceManager from data");
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let mut voice_manager = voice_manager_lock.lock().await;
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match voice_manager.get_mut(guild_id) {
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Some(handler) => {
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// play sound
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handler.play(ffmpeg(fp).await?);
}
None => {
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// try & join a voice channel
match voice_manager.join(guild_id, user_channel) {
Some(handler) => {
handler.play(ffmpeg(fp).await?);
}
None => {
msg.channel_id.say(&ctx, "Failed to join channel").await?;
}
};
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}
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}
}
Err(_) => {
msg.channel_id.say(&ctx, "Couldn't find sound by term provided").await?;
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}
}
}
None => {
msg.channel_id.say(&ctx, "You are not in a voice chat!").await?;
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}
}
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Ok(())
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}
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#[command]
async fn help(ctx: &mut Context, msg: &Message, _args: Args) -> CommandResult {
msg.channel_id.send_message(&ctx, |m| m
.embed(|e| e
.title("Help")
.color(THEME_COLOR)
.description("Please visit our website at https://soundfx.jellywx.com/help"))).await?;
Ok(())
}
#[command]
async fn info(ctx: &mut Context, msg: &Message, _args: Args) -> CommandResult {
msg.channel_id.send_message(&ctx, |m| m
.embed(|e| e
.title("Info")
.color(THEME_COLOR)
.description("Default prefix: `?`
Reset prefix: `@SoundFX prefix ?`
Invite me: https://discordapp.com/oauth2/authorize?client_id=430384808200372245&scope=bot&permissions=36703232
**Welcome to SoundFX!**
Developer: <@203532103185465344>
Find me on https://discord.jellywx.com/ and on https://github.com/JellyWX :)
**An online dashboard is available!** Visit https://soundfx.jellywx.com/dashboard
There is a maximum sound limit per user. This can be removed by donating at https://patreon.com/jellywx"))).await?;
Ok(())
}
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#[command("volume")]
async fn change_volume(ctx: &mut Context, msg: &Message, mut args: Args) -> CommandResult {
let guild = match msg.guild(&ctx.cache).await {
Some(guild) => guild,
None => {
return Ok(());
}
};
let pool = ctx.data.read().await
.get::<SQLPool>().cloned().expect("Could not get SQLPool from data");
let mut guild_data_opt = GuildData::get_from_id(*guild.read().await.id.as_u64(), pool.clone()).await;
if guild_data_opt.is_none() {
guild_data_opt = Some(GuildData::create_from_guild(guild.read().await, pool.clone()).await.unwrap())
}
let mut guild_data = guild_data_opt.unwrap();
if args.len() == 1 {
match args.single::<u8>() {
Ok(volume) => {
guild_data.volume = volume;
guild_data.commit(pool).await?;
msg.channel_id.say(&ctx, format!("Volume changed to {}%", volume)).await?;
}
Err(_) => {
msg.channel_id.say(&ctx,
format!("Current server volume: {vol}%. Change the volume with ```{prefix}volume <new volume>```",
vol = guild_data.volume, prefix = guild_data.prefix)).await?;
}
}
}
else {
msg.channel_id.say(&ctx,
format!("Current server volume: {vol}%. Change the volume with ```{prefix}volume <new volume>```",
vol = guild_data.volume, prefix = guild_data.prefix)).await?;
}
Ok(())
}
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#[command("prefix")]
async fn change_prefix(ctx: &mut Context, msg: &Message, mut args: Args) -> CommandResult {
let guild = match msg.guild(&ctx.cache).await {
Some(guild) => guild,
None => {
return Ok(());
}
};
let pool = ctx.data.read().await
.get::<SQLPool>().cloned().expect("Could not get SQLPool from data");
let mut guild_data;
{
let mut guild_data_opt = GuildData::get_from_id(*guild.read().await.id.as_u64(), pool.clone()).await;
if guild_data_opt.is_none() {
guild_data_opt = Some(GuildData::create_from_guild(guild.read().await, pool.clone()).await.unwrap())
}
guild_data = guild_data_opt.unwrap();
}
if args.len() == 1 {
match args.single::<String>() {
Ok(prefix) => {
if prefix.len() <= 5 {
guild_data.prefix = prefix;
guild_data.commit(pool).await?;
msg.channel_id.say(&ctx, format!("Prefix changed to `{}`", guild_data.prefix)).await?;
}
else {
msg.channel_id.say(&ctx, "Prefix must be less than 5 characters long").await?;
}
}
Err(_) => {
msg.channel_id.say(&ctx, format!("Usage: `{prefix}prefix <new prefix>`", prefix = guild_data.prefix)).await?;
}
}
}
else {
msg.channel_id.say(&ctx, format!("Usage: `{prefix}prefix <new prefix>`", prefix = guild_data.prefix)).await?;
}
Ok(())
}
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#[command("upload")]
async fn upload_new_sound(ctx: &mut Context, msg: &Message, mut args: Args) -> CommandResult {
let new_name = args.rest();
if !new_name.is_empty() && new_name.len() <= 20 {
// need to check how many sounds user currently has
// need to check if user is patreon or nah
msg.channel_id.say(&ctx, "Please now upload an audio file under 1MB in size:").await?;
let reply = msg.channel_id.await_reply(&ctx)
.author_id(msg.author.id)
.timeout(Duration::from_secs(30))
.await;
match reply {
Some(reply_msg) => {
let pool = ctx.data.read().await
.get::<SQLPool>().cloned().expect("Could not get SQLPool from data");
if reply_msg.attachments.len() == 1 {
match Sound::create_anon(
new_name,
&reply_msg.attachments[0].url,
*msg.guild_id.unwrap().as_u64(),
*msg.author.id.as_u64(),
pool).await {
Ok(_) => {
msg.channel_id.say(&ctx, "Sound has been uploaded").await?;
}
Err(_) => {
msg.channel_id.say(&ctx, "Sound failed to upload. Size may be too large").await?;
}
}
}
else {
msg.channel_id.say(&ctx, "Please upload 1 attachment following your upload command. Aborted").await?;
}
}
None => {
msg.channel_id.say(&ctx, "Upload timed out. Please redo the command").await?;
}
}
}
else {
msg.channel_id.say(&ctx, "Usage: `?upload <name>`. Please ensure the name provided is less than 20 characters in length").await?;
}
Ok(())
}