extern crate mpd;

use mpd::{Client, Query, Song, Term};

use clap::{Parser, Subcommand};

#[derive(Parser)]
#[command(author, version, about, long_about = None)]
#[command(propagate_version = true)]

struct Cli {
    #[command(subcommand)]
    command: Option<Commands>,
}

#[derive(Subcommand)]
enum Commands {
    /// Toggle MPD stream
    Toggle {},
    /// Skip to the next track
    Next {},
    /// Revert to the previous track
    Prev {},
    /// Stops playing
    Stop {},
    /// Play queueueu
    Play {
        track: Option<u32>,
    },
    /// Set or get crossfade
    Crossfade {
        seconds: Option<i64>,
    },
    Update {},
    /// Return currently playing song
    Current {},
    /// Query database
    Search {
        #[arg(trailing_var_arg = true)]
        query: Vec<String>,
    },
    List {},
}

fn main() {
    let mut conn = Client::connect("localhost:6600").unwrap();

    let cli = Cli::parse();

    if let Some(cmd) = &cli.command {
        match cmd {
            Commands::Play { track } => {
                if let Some(i) = track {
                    conn.switch(*i).unwrap()
                } else {
                    conn.play().unwrap();
                }
            }

            Commands::Stop {} => conn.stop().unwrap(),

            Commands::Toggle {} => conn.toggle_pause().unwrap(),

            Commands::Next {} => conn.next().unwrap(),

            Commands::Prev {} => conn.prev().unwrap(),

            Commands::List {} => print_songs(conn.queue().unwrap()),

            Commands::Update {} => {
                let thing = conn.update().unwrap();
                println!("{}", thing)
            }

            Commands::Current {} => {
                println!("{}", format_song(conn.currentsong().unwrap().unwrap()))
            }

            Commands::Search { query } => {
                let mut result: Vec<String> = vec![];
                let query = query.join(" ");
                let window = (0, conn.stats().unwrap().songs);
                conn.search(&Query::new().and(Term::Any, query), window)
                    .unwrap()
                    .iter()
                    .for_each(|x| result.push(x.file.clone()));
                result.iter().for_each(|x| println!("{}", x))
            }

            Commands::Crossfade { seconds } => {
                if let Some(crossfade) = seconds {
                    conn.crossfade(*crossfade).unwrap()
                } else {
                    if let Some(crossfade) = conn.status().unwrap().crossfade {
                        println!("Crossfade: {}", crossfade.as_secs());
                    } else {
                        println!("Crossfade disabled")
                    }
                }
            }
        }
    } else {
        println!("{}", format_song(conn.currentsong().unwrap().unwrap()));
        println!("{:?}", conn.stats().unwrap().songs);
    }
}

fn print_songs(songs: Vec<Song>) -> () {
    songs
        .iter()
        .for_each(|x| println!("{}", format_song(x.clone())));
}

fn format_song(song: Song) -> String {
    format!("{} - {}", song.artist.unwrap(), song.title.unwrap())
}