use crate::core::*;
use crate::model::*;

pub struct Track {
    pub name:       String,
    /// Play input through output.
    pub monitoring: bool,
    /// Write input to sequence.
    pub recording:  bool,
    /// Overdub input to sequence.
    pub overdub:    bool,
    /// Map: tick -> MIDI events at tick
    pub phrases:    Vec<Phrase>,
    /// Phrase selector
    pub sequence:   Option<usize>,
    /// Output from current sequence.
    pub midi_out:   Port<MidiOut>,
    /// Red keys on piano roll.
    pub notes_on:   Vec<bool>,
    /// Device chain
    pub chain:      Chain,
}

impl Track {
    pub fn new (
        name:    &str,
        jack:    &Client,
        devices: Option<Vec<Box<dyn Device>>>,
        phrases: Option<Vec<Phrase>>,
    ) -> Usually<Self> {
        Ok(Self {
            name:       name.to_string(),
            chain:      Chain::new(&name, devices)?,
            midi_out:   jack.register_port(name, MidiOut)?,
            notes_on:   vec![],
            monitoring: false,
            recording:  false,
            overdub:    true,
            sequence:   None,
            phrases:    phrases.unwrap_or_else(||vec![])
        })
    }
}

impl PortList for Track {
    fn midi_ins (&self) -> Usually<Vec<String>> { Ok(vec![]) }
    fn midi_outs (&self) -> Usually<Vec<String>> { Ok(vec![self.midi_out.name()?]) }
}