use crate::prelude::*;
use super::Sequencer;

pub fn render (
    state:  &mut Sequencer,
    stdout: &mut Stdout,
    offset: (u16, u16)
) -> Result<(), Box<dyn Error>> {
    //render_toolbar(state, stdout, offset)?;
    render_grid(state, stdout, offset)?;
    render_events(state, stdout, offset)?;
    Ok(())
}

fn render_grid (
    state:  &mut Sequencer,
    stdout: &mut Stdout,
    offset: (u16, u16)
) -> Result<(), Box<dyn Error>> {
    let move_to = |col, row| crossterm::cursor::MoveTo(offset.0 + col, offset.1 + row);
    let bg = "┊···············┊···············┊···············┊···············";
    let cursor: String = if state.cursor.2 == 0 {
        "X".into()
    } else {
        std::iter::repeat("·")
            .take(state.cursor.2 as usize)
            .collect()
    };
    stdout
        .queue(move_to(1,  3))?.queue(Print("1.1"))?
        .queue(move_to(17, 3))?.queue(Print("1.2"))?
        .queue(move_to(33, 3))?.queue(Print("1.3"))?
        .queue(move_to(49, 3))?.queue(Print("1.4"))?
        .queue(move_to(1, 4))?.queue(PrintStyledContent(bg.grey()))?
        .queue(move_to(1, 5))?.queue(PrintStyledContent(bg.grey()))?
        .queue(move_to(1, 6))?.queue(PrintStyledContent(bg.grey()))?
        .queue(move_to(1, 7))?.queue(PrintStyledContent(bg.grey()))?
        .queue(move_to(1 + state.cursor.0, 4 + state.cursor.1))?
        .queue(PrintStyledContent(cursor.reverse()))?;
    Ok(())
}

fn render_events (
    state:  &mut Sequencer,
    stdout: &mut Stdout,
    offset: (u16, u16)
) -> Result<(), Box<dyn Error>> {
    Ok(())
}