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Gabriel Fontes
2022-01-27 22:57:11 -03:00
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image: nixos/unstable
packages:
- nixos.cachix
environment:
NIX_CONFIG: "experimental-features = nix-command flakes"
secrets:
- f2907d38-97b4-4e7d-9fb9-57b3fb0135af
tasks:
- setup_cachix: |
cat ~/.cachix_token | cachix authtoken --stdin
cachix use misterio
- build: |
cd disconic
nix --quiet build
- upload_cachix: |
nix path-info disconic/result/ -r | cachix push misterio

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root = true
[*]
end_of_line = lf
insert_final_newline = true
charset = utf-8
trim_trailing_whitespace = true
[*.nix]
ident_style = space
ident_size = 2
[*.rs]
ident_style = space
ident_size = 4

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Cargo.nix linguist-generated

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/target
.env

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[package]
name = "disconic"
description = "Discord bot for interacting with subsonic music libraries"
version = "0.1.0"
authors = [ "Gabriel Fontes <eu@misterio.me>" ]
edition = "2018"
homepage = "https://misterio.me"
license = "AGPL-3.0-or-later"
[dependencies.serenity]
version = "0.10"
default-features = false
features = [ "default_no_backend", "rustls_backend" ]
[dependencies.reqwest]
version = "0.11"
default-features = false
features = [ "rustls-tls" ]
[dependencies.sunk]
version = "0.1"
git = "https://github.com/Misterio77/sunk"
default-features = false
features = [ "rustls-tls" ]
[dependencies.songbird]
version = "0.2"
default-features = false
features = [ "serenity-rustls", "driver", "gateway" ]
[dependencies.tokio]
version = "1.0"
features = ["full"]
[dependencies.anyhow]
version = "1.0"
[dependencies.dotenv]
version = "0.15"

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reviewing courts shall apply local law that most closely approximates
an absolute waiver of all civil liability in connection with the
Program, unless a warranty or assumption of liability accompanies a
copy of the Program in return for a fee.
END OF TERMS AND CONDITIONS
How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.
To do so, attach the following notices to the program. It is safest
to attach them to the start of each source file to most effectively
state the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.
<one line to give the program's name and a brief idea of what it does.>
Copyright (C) <year> <name of author>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
Also add information on how to contact you by electronic and paper mail.
If your software can interact with users remotely through a computer
network, you should also make sure that it provides a way for users to
get its source. For example, if your program is a web application, its
interface could display a "Source" link that leads users to an archive
of the code. There are many ways you could offer source, and different
solutions will be better for different programs; see section 13 for the
specific requirements.
You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU AGPL, see
<https://www.gnu.org/licenses/>.

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README.md Normal file
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# Disconic bot
[![builds.sr.ht status](https://builds.sr.ht/~misterio/disconic.svg)](https://builds.sr.ht/~misterio/disconic?)
[![built with nix](https://img.shields.io/static/v1?logo=nixos&logoColor=white&label=&message=Built%20with%20Nix&color=41439a)](https://builtwithnix.org)

26
default.nix Normal file
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{ lib, rustPlatform, pkg-config, autoconf, alsa-lib, automake, libopus, ffmpeg }:
let manifest = (lib.importTOML ./Cargo.toml).package;
in rustPlatform.buildRustPackage rec {
pname = manifest.name;
version = manifest.version;
src = lib.cleanSource ./.;
nativeBuildInputs = [ pkg-config ];
buildInputs = [ autoconf alsa-lib automake libopus ffmpeg ];
cargoLock = {
lockFile = ./Cargo.lock;
outputHashes = {
"sunk-0.1.2" = "sha256-VruqNDbWbjdarXiyR1OHcXsR1MvTmCM5j+v2ZpcG5IA=";
};
};
meta = with lib; {
description = manifest.desciption;
homepage = manifest.homepage;
license = licenses.agpl3Plus;
platforms = platforms.all;
};
}

43
flake.lock generated Normal file
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{
"nodes": {
"nixpkgs": {
"locked": {
"lastModified": 1642104392,
"narHash": "sha256-m71b7MgMh9FDv4MnI5sg9MiBVW6DhE1zq+d/KlLWSC8=",
"owner": "NixOS",
"repo": "nixpkgs",
"rev": "5aaed40d22f0d9376330b6fa413223435ad6fee5",
"type": "github"
},
"original": {
"owner": "NixOS",
"ref": "nixos-unstable",
"repo": "nixpkgs",
"type": "github"
}
},
"root": {
"inputs": {
"nixpkgs": "nixpkgs",
"utils": "utils"
}
},
"utils": {
"locked": {
"lastModified": 1638122382,
"narHash": "sha256-sQzZzAbvKEqN9s0bzWuYmRaA03v40gaJ4+iL1LXjaeI=",
"owner": "numtide",
"repo": "flake-utils",
"rev": "74f7e4319258e287b0f9cb95426c9853b282730b",
"type": "github"
},
"original": {
"owner": "numtide",
"repo": "flake-utils",
"type": "github"
}
}
},
"root": "root",
"version": 7
}

49
flake.nix Normal file
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{
description = "Discord bot for interacting with subsonic music libraries";
inputs = {
nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
utils.url = "github:numtide/flake-utils";
};
outputs = { self, nixpkgs, utils }:
let
name = "disconic";
overlay = final: prev: {
${name} = final.callPackage ./default.nix { };
};
overlays = [ overlay ];
in
rec {
inherit overlay overlays;
nixosModules."${name}" = import ./module.nix;
nixosModule = nixosModules."${name}";
} //
(utils.lib.eachDefaultSystem (system:
let
pkgs = (import nixpkgs { inherit system overlays; });
in
rec {
# nix build
packages.${name} = pkgs.${name};
defaultPackage = packages.${name};
# nix run
apps.${name} = utils.lib.mkApp { drv = packages.${name}; };
defaultApp = apps.${name};
# nix develop
devShell = pkgs.mkShell {
inputsFrom = [ defaultPackage ];
buildInputs = with pkgs;
[
clippy
rust-analyzer
rustc
rustfmt
];
};
}
));
}

51
module.nix Normal file
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{ config, lib, pkgs, ... }:
with lib;
let cfg = config.services.disconic;
in {
options.services.disconic = {
enable = mkEnableOption "Disconic, a discord bot for subsonic music libraries";
package = mkOption {
type = types.package;
default = pkgs.disconic;
defaultText = "pkgs.disconic";
description = ''
The package implementing disconic
'';
};
subsonicUrl = mkOption {
type = types.string;
description = "Subsonic library base API URL";
};
subsonicUser = mkOption {
type = types.string;
description = "Subsonic user login";
};
subsonicPasswordFile = mkOption {
type = types.path;
description = "File path containing subsonic user password";
};
discordTokenFile = mkOption {
type = types.path;
description = "File path containing discord token";
};
};
config = mkIf cfg.enable {
systemd.services.disconic = {
description = "Disconic, a Discord Subsonic Bot";
wantedBy = [ "multi-user.target" ];
serviceConfig = {
ExecStart = "${cfg.package}/bin/disconic";
Restart = "on-failure";
Environment = [
"SUBSONIC_URL=${cfg.subsonicUrl}"
"SUBSONIC_USER=${cfg.subsonicUser}"
"SUBSONIC_PASSWORD_FILE=${cfg.subsonicPasswordFile}"
"DISCORD_TOKEN_FILE=${cfg.discordTokenFile}"
];
};
};
};
}

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src/client.rs Normal file
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use anyhow::Result;
use serenity::{
client::Client as DiscordClient, framework::standard::StandardFramework, prelude::TypeMapKey,
};
use songbird::SerenityInit;
use sunk::Client as SubsonicClient;
use std::{env, fs, io};
use crate::discord::{Handler, GENERAL_GROUP};
pub struct Client {
ss_url: String,
ss_user: String,
ss_password: String,
discord_token: String,
}
impl Client {
pub async fn from_env() -> Result<Self> {
// Convert to std::io::Error, allowing usage of and_then
let convert_err = |e| io::Error::new(io::ErrorKind::Other, e);
let ss_url = env::var("SUBSONIC_URL")?;
let ss_user = env::var("SUBSONIC_USER")?;
let ss_password = env::var("SUBSONIC_PASSWORD").or_else(|_| {
env::var("SUBSONIC_PASSWORD_FILE")
.map_err(convert_err)
.and_then(fs::read_to_string)
.map(|s| s.trim().to_owned())
})?;
let discord_token = env::var("DISCORD_TOKEN").or_else(|_| {
env::var("DISCORD_TOKEN_FILE")
.map_err(convert_err)
.and_then(fs::read_to_string)
.map(|s| s.trim().to_owned())
})?;
Ok(Self {
ss_url,
ss_user,
ss_password,
discord_token,
})
}
pub async fn discord(&self, ss: SubsonicClient) -> Result<DiscordClient> {
Ok(DiscordClient::builder(&self.discord_token)
.event_handler(Handler)
.framework(
StandardFramework::new()
.configure(|c| c.prefix("~"))
.group(&GENERAL_GROUP),
)
.type_map_insert::<MusicClient>(ss)
.register_songbird()
.await?)
}
pub async fn subsonic(&self) -> Result<SubsonicClient> {
Ok(SubsonicClient::new(
&self.ss_url,
&self.ss_user,
&self.ss_password,
)?)
}
}
pub struct MusicClient;
impl TypeMapKey for MusicClient {
type Value = SubsonicClient;
}

95
src/discord/mod.rs Normal file
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use serenity::{
async_trait,
client::{Context, EventHandler},
framework::standard::{
macros::{command, group},
Args, CommandResult,
},
model::channel::Message,
utils::MessageBuilder,
};
use sunk::{
search::{self, SearchPage},
Streamable,
};
use crate::MusicClient;
#[group]
#[commands(play)]
pub struct General;
pub struct Handler;
#[async_trait]
impl EventHandler for Handler {}
#[command]
#[only_in(guilds)]
#[aliases(p, queue, song)]
#[example("~play Down Under")]
#[description("Tocar uma música")]
async fn play(ctx: &Context, msg: &Message, args: Args) -> CommandResult {
let data = ctx.data.read().await;
let music_client = data
.get::<MusicClient>()
.expect("Couldn't retrieve music client");
let search_size = SearchPage::new().with_size(1);
let ignore = search::NONE;
let result = music_client
.search(args.rest(), ignore, ignore, search_size)
.await?
.songs;
match result.first() {
Some(song) => {
let guild = msg.guild(&ctx.cache).await.unwrap();
let guild_id = guild.id;
let caller_channel = guild
.voice_states
.get(&msg.author.id)
.and_then(|voice_state| voice_state.channel_id);
let connect_to = match caller_channel {
Some(channel) => channel,
None => {
msg.reply(ctx, "Você não está em um canal de voz").await?;
return Ok(());
}
};
let manager = songbird::get(ctx).await.unwrap();
let handler = manager.join(guild_id, connect_to).await;
let mut channel_handler = handler.0.lock().await;
let url = song.stream_url(&music_client)?;
let input = songbird::ffmpeg(url).await.unwrap();
channel_handler.play_only_source(input);
let message = MessageBuilder::new()
.push("Agora tocando ")
.push_bold_safe(format!(
"{} - {} ({})",
song.artist.clone().unwrap_or_default(),
song.title,
song.album.clone().unwrap_or_default(),
))
.build();
msg.channel_id.say(&ctx.http, &message).await?;
Ok(())
}
None => {
msg.channel_id
.say(&ctx.http, "Nenhuma música encontrada")
.await?;
Ok(())
}
}
}

4
src/lib.rs Normal file
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pub mod client;
pub use client::{MusicClient, Client};
pub mod discord;

16
src/main.rs Normal file
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use anyhow::Result;
use disconic::Client;
#[tokio::main]
async fn main() -> Result<()> {
dotenv::dotenv().ok();
let client = Client::from_env().await?;
let subsonic = client.subsonic().await?;
let mut discord = client.discord(subsonic).await?;
discord.start().await?;
Ok(())
}