pub use tek::*;
pub(crate) use clap::{self, Parser, Subcommand};
/// Application entrypoint.
pub fn main () -> Usually<()> {
    Cli::parse().run()
}
#[derive(Debug, Parser)]
#[command(version, about = Some(HEADER), long_about = Some(HEADER))]
pub struct Cli {
    /// Which app to initialize
    #[command(subcommand)] mode: Mode,
    /// Name of JACK client
    #[arg(short='n', long)] name: Option<String>,
    /// Whether to attempt to become transport master
    #[arg(short='S', long, default_value_t = false)] sync_lead: bool,
   /// Whether to sync to external transport master
    #[arg(short='s', long, default_value_t = true)] sync_follow: bool,
    /// Initial tempo in beats per minute
    #[arg(short='b', long, default_value = None)] bpm: Option<f64>,
    /// Whether to include a transport toolbar (default: true)
    #[arg(short='t', long, default_value_t = true)] show_clock: bool,
    /// MIDI outs to connect to (multiple instances accepted)
    #[arg(short='I', long)] midi_from: Vec<String>,
    /// MIDI outs to connect to (multiple instances accepted)
    #[arg(short='i', long)] midi_from_re: Vec<String>,
    /// MIDI ins to connect to (multiple instances accepted)
    #[arg(short='O', long)] midi_to: Vec<String>,
    /// MIDI ins to connect to (multiple instances accepted)
    #[arg(short='o', long)] midi_to_re: Vec<String>,
    /// Audio outs to connect to left input
    #[arg(short='l', long)] left_from: Vec<String>,
    /// Audio outs to connect to right input
    #[arg(short='r', long)] right_from: Vec<String>,
    /// Audio ins to connect from left output
    #[arg(short='L', long)] left_to: Vec<String>,
    /// Audio ins to connect from right output
    #[arg(short='R', long)] right_to: Vec<String>,
}
#[derive(Debug, Clone, Subcommand)] pub enum Mode {
    /// A standalone transport clock.
    Clock,
    /// A MIDI sequencer.
    Sequencer,
    /// A MIDI-controlled audio sampler.
    Sampler,
    /// Sequencer and sampler together.12
    Groovebox,
    /// Multi-track MIDI sequencer.
    Arranger {
        /// Number of scenes
        #[arg(short = 'y', long, default_value_t = 4)] scenes: usize,
        /// Number of tracks
        #[arg(short = 'x', long, default_value_t = 4)] tracks: usize,
        /// Width of tracks
        #[arg(short = 'w', long, default_value_t = 12)] track_width: usize,
    },
    /// TODO: A MIDI-controlled audio mixer
    Mixer,
    /// TODO: A customizable channel strip
    Track,
    /// TODO: An audio plugin host
    Plugin,
}
impl Cli {
    pub fn run (&self) -> Usually<()> {
        let name        = self.name.as_ref().map_or("tek", |x|x.as_str());
        //let color       = ItemPalette::random();
        let jack        = Jack::new(name)?;
        let engine      = Tui::new()?;
        let empty       = &[] as &[&str];
        let midi_froms  = PortConnect::collect(&self.midi_from,  empty, &self.midi_from_re);
        let midi_tos    = PortConnect::collect(&self.midi_to,    empty, &self.midi_to_re);
        let left_froms  = PortConnect::collect(&self.left_from,  empty, empty);
        let left_tos    = PortConnect::collect(&self.left_to,    empty, empty);
        let right_froms = PortConnect::collect(&self.right_from, empty, empty);
        let right_tos   = PortConnect::collect(&self.right_to,   empty, empty);
        let audio_froms = &[left_froms.as_slice(), right_froms.as_slice()];
        let audio_tos   = &[left_tos.as_slice(),   right_tos.as_slice()  ];
        let jack = jack.run(|jack|match self.mode {
            Mode::Clock => Tek::new_clock(
                jack, self.bpm, self.sync_lead, self.sync_follow,
                &midi_froms, &midi_tos),
            Mode::Sequencer => Tek::new_sequencer(
                jack, self.bpm, self.sync_lead, self.sync_follow,
                &midi_froms, &midi_tos),
            Mode::Groovebox => Tek::new_groovebox(
                jack, self.bpm, self.sync_lead, self.sync_follow,
                &midi_froms, &midi_tos,
                &audio_froms, &audio_tos),
            Mode::Arranger { scenes, tracks, track_width, .. } => Tek::new_arranger(
                jack, self.bpm, self.sync_lead, self.sync_follow,
                &midi_froms, &midi_tos,
                &audio_froms, &audio_tos,
                scenes, tracks, track_width),
            _ => todo!()
        })?;
        engine.run(&jack)
    }
}

const HEADER: &'static str = r#"

░▒▓████████▓▒░▒▓███████▓▒░▒▓█▓▒░░▒▓█▓▒░░
░░░░▒▓█▓▒░░░░░▒▓█▓▒░░░░░░░▒▓█▓▒░▒▓█▓▒░░░
░░░░▒▓█▓▒░░░░░▒▓█████▓▒░░░▒▓██████▓▒░░░░
░░░░▒▓█▓▒░░░░░▒▓█▓▒░░░░░░░▒▓█▓▒░▒▓█▓▒░░░
░░░░▒▓█▓▒░░░░░▒▓█▓▒░░░░░░░▒▓█▓▒░░▒▓█▓▒░░
░░░░▒▓█▓▒░░░░░▒▓███████▓▒░▒▓█▓▒░░▒▓█▓▒░░"#;

#[cfg(test)] #[test] fn test_cli () {
    use clap::CommandFactory;
    Cli::command().debug_assert();
    let jack = Jack::default();
    //TODO:
    //let _ = Tek::new_clock(&jack, None, false, false, &[], &[]);
    //let _ = Tek::new_sequencer(&jack, None, false, false, &[], &[]);
    //let _ = Tek::new_groovebox(&jack, None, false, false, &[], &[], &[&[], &[]], &[&[], &[]]);
    //let _ = Tek::new_arranger(&jack, None, false, false, &[], &[], &[&[], &[]], &[&[], &[]], 0, 0, 0);
}