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use prototty::*;
use prototty_grid::*;
use terminal::Terminal;
use cell::Colour;

pub struct Context {
    terminal: Terminal,
    grid: Grid<Colour, Colour>,
}

impl Context {
    pub fn new() -> Self {
        let terminal = Terminal::new();
        let grid = Grid::new(terminal.size());
        Self { terminal, grid }
    }

    pub fn quit(&self) {
        self.terminal.quit();
    }
}

impl Renderer for Context {
    type Error = ();
    fn render_at<V: View<T>, T>(
        &mut self,
        view: &mut V,
        data: &T,
        offset: Coord,
        depth: i32,
    ) -> Result<(), Self::Error> {
        self.grid.clear();
        view.view(data, offset, depth, &mut self.grid);
        self.terminal.draw_grid(&self.grid);
        Ok(())
    }
    fn size(&self) -> Size {
        self.terminal.size()
    }
}