use std::path::PathBuf;

use structopt::StructOpt;

use ferretro_components::base::ControlFlow;
use ferretro_components::prelude::*;
use ferretro_components::provided::stdlib::*;

mod ansi_video;
mod term_input;

#[derive(StructOpt)]
struct Opt {
    /// Emulator core to use.
    #[structopt(short, long, parse(from_os_str))]
    core: PathBuf,
    /// Path to ROM.
    #[structopt(parse(from_os_str))]
    rom: PathBuf,
    /// Directory containing BIOS files
    #[structopt(short, long, parse(from_os_str))]
    system: Option<PathBuf>,
}

fn main() -> Result<(), Box<dyn std::error::Error + Send + Sync>> {
    let opt: Opt = Opt::from_args();
    let mut emu = RetroComponentBase::new(&opt.core);
    emu.register_component(ansi_video::AnsiVideoComponent::default())?;
    emu.register_component(term_input::TermiosInputComponent::default())?;
    emu.register_component(StatefulInputComponent::default())?;
    emu.register_component(PathBufComponent {
        sys_path: opt.system.clone(),
        libretro_path: Some(opt.core.to_path_buf()),
        core_assets_path: None,
        save_path: Some(std::env::temp_dir()),
    })?;
    let mut vars_comp = VariableStoreComponent::default();
    vars_comp.insert("mgba_skip_bios", "ON");
    vars_comp.insert("mgba_sgb_borders", "OFF");
    emu.register_component(vars_comp)?;
    emu.register_component(SleepFramerateLimitComponent::default())?;

    emu.init()?;
    emu.load_game(&opt.rom)?;

    while let ControlFlow::Continue = emu.run() {
    }

    Ok(())
}