Add lyrics command and format playlists list differently

Signed-off-by: trivernis <trivernis@protonmail.com>

Cargo.lock

@@ -2109,6 +2109,7 @@ dependencies = [
  "minecraft-data-rs",
  "rand 0.8.3",
  "regex",
+ "reqwest",
  "rusqlite",
  "serde",
  "serde_derive",

Cargo.toml

@@ -29,3 +29,4 @@ chrono = "0.4.19"
 colored = "2.0.0"
 sysinfo = "0.16.5"
 database = {path="./database"}
+reqwest = "0.11.2"

src/commands/music/lyrics.rs

@@ -0,0 +1,45 @@
+use serenity::client::Context;
+use serenity::framework::standard::macros::command;
+use serenity::framework::standard::CommandResult;
+use serenity::model::channel::Message;
+
+use crate::commands::music::get_queue_for_guild;
+use crate::providers::music::lyrics::get_lyrics;
+
+#[command]
+#[only_in(guilds)]
+#[description("Shows the lyrics for the currently playing song")]
+#[usage("")]
+async fn lyrics(ctx: &Context, msg: &Message) -> CommandResult {
+    let guild = msg.guild(&ctx.cache).await.unwrap();
+    log::debug!("Fetching lyrics for song playing in {}", guild.id);
+
+    let queue = get_queue_for_guild(ctx, &guild.id).await?;
+    let queue_lock = queue.lock().await;
+
+    if let Some(current) = queue_lock.current() {
+        log::debug!("Playing music. Fetching lyrics for currently playing song...");
+        let metadata = current.metadata();
+        let title = metadata.title.clone().unwrap();
+        let author = metadata.artist.clone().unwrap();
+
+        if let Some(lyrics) = get_lyrics(&*author, &*title).await? {
+            log::trace!("Lyrics for '{}' are {}", title, lyrics);
+
+            msg.channel_id
+                .send_message(ctx, |m| {
+                    m.embed(|e| e.title(format!("Lyrics for {}", title)).description(lyrics))
+                })
+                .await?;
+        } else {
+            log::debug!("No lyrics found");
+            msg.channel_id.say(ctx, "No lyrics found").await?;
+        }
+    } else {
+        msg.channel_id
+            .say(ctx, "I'm not playing music right now")
+            .await?;
+    }
+
+    Ok(())
+}

src/commands/music/mod.rs

@@ -16,6 +16,7 @@ use clear::CLEAR_COMMAND;
 use current::CURRENT_COMMAND;
 use join::JOIN_COMMAND;
 use leave::LEAVE_COMMAND;
+use lyrics::LYRICS_COMMAND;
 use pause::PAUSE_COMMAND;
 use play::PLAY_COMMAND;
 use play_next::PLAY_NEXT_COMMAND;
@@ -39,6 +40,7 @@ mod clear;
 mod current;
 mod join;
 mod leave;
+mod lyrics;
 mod pause;
 mod play;
 mod play_next;
@@ -61,7 +63,8 @@ mod skip;
     clear,
     pause,
     save_playlist,
-    playlists
+    playlists,
+    lyrics
 )]
 #[prefixes("m", "music")]
 pub struct Music;

src/commands/music/playlists.rs

@@ -17,8 +17,13 @@ async fn playlists(ctx: &Context, msg: &Message) -> CommandResult {
     msg.channel_id
         .send_message(ctx, |m| {
             m.embed(|e| {
-                e.title("Saved Playlists")
-                    .fields(playlists.into_iter().map(|p| (p.name, p.url, true)))
+                e.title("Saved Playlists").description(
+                    playlists
+                        .into_iter()
+                        .map(|p| format!("[{}]({})", p.name, p.url))
+                        .collect::<Vec<String>>()
+                        .join("\n"),
+                )
             })
         })
         .await?;

src/providers/music/lyrics.rs

@@ -0,0 +1,24 @@
+use crate::utils::error::BotResult;
+use regex::Regex;
+use serde_derive::Deserialize;
+
+const API_ENDPOINT: &str = "https://api.lyrics.ovh/v1/";
+
+pub async fn get_lyrics(artist: &str, title: &str) -> BotResult<Option<String>> {
+    lazy_static::lazy_static! { static ref DOUBLE_LB_REGEX: Regex = Regex::new(r"\n\n").unwrap(); }
+    log::debug!("Requesting lyrics for '{}' by '{}'", title, artist);
+    let request_url = format!("{}{}/{}", API_ENDPOINT, artist, title);
+    log::trace!("Request url is {}", request_url);
+    let response = reqwest::get(request_url).await?;
+    let response_text = response.text().await?;
+    log::trace!("Lyrics Response is {}", response_text);
+
+    let lyrics: Option<Lyrics> = serde_json::from_str(&*response_text).ok();
+
+    Ok(lyrics.map(|l| DOUBLE_LB_REGEX.replace_all(&*l.lyrics, "\n").to_string()))
+}
+
+#[derive(Deserialize, Clone, Debug)]
+struct Lyrics {
+    lyrics: String,
+}

src/providers/music/mod.rs

@@ -10,6 +10,7 @@ use std::time::Duration;
 use tokio::io::AsyncReadExt;
 use tokio::process::Command;
 
+pub(crate) mod lyrics;
 pub(crate) mod queue;
 pub(crate) mod responses;
 pub(crate) mod spotify;

src/utils/error.rs

@@ -25,6 +25,9 @@ pub enum BotError {
     #[error("Spotify API Error: {0}")]
     SpotifyError(#[from] aspotify::Error),
 
+    #[error("Reqwest Error: {0}")]
+    Reqwest(#[from] reqwest::Error),
+
     #[error("{0}")]
     Msg(String),
 }