use nih_plug::prelude::*;
use std::sync::Arc;
use ui::Emulator;

mod ui;

const WIDTH: u32 = 320;
const HEIGHT: u32 = 240;

#[derive(Params, Default)]
struct EmuParams {}

#[derive(Default)]
struct GameboyEmu {}

impl Plugin for GameboyEmu {
    const NAME: &'static str = "Gameboy";

    const VENDOR: &'static str = "Alex Janka";

    const URL: &'static str = "alexjanka.com";

    const EMAIL: &'static str = "alex@alexjanka.com";

    const VERSION: &'static str = "0.1";

    const AUDIO_IO_LAYOUTS: &'static [AudioIOLayout] = &[AudioIOLayout {
        main_input_channels: NonZeroU32::new(2),
        main_output_channels: NonZeroU32::new(2),

        aux_input_ports: &[],
        aux_output_ports: &[],

        // Individual ports and the layout as a whole can be named here. By default these names
        // are generated as needed. This layout will be called 'Stereo', while the other one is
        // given the name 'Mono' based no the number of input and output channels.
        names: PortNames::const_default(),
    }];

    type SysExMessage = ();

    type BackgroundTask = ();

    fn params(&self) -> Arc<dyn Params> {
        Arc::new(EmuParams::default())
    }

    fn process(
        &mut self,
        _buffer: &mut Buffer,
        _: &mut AuxiliaryBuffers,
        _: &mut impl ProcessContext<Self>,
    ) -> ProcessStatus {
        ProcessStatus::Normal
    }

    fn editor(&self, _: AsyncExecutor<Self>) -> Option<Box<dyn Editor>> {
        Some(Box::new(Emulator::new()))
    }

    fn initialize(
        &mut self,
        _audio_io_layout: &AudioIOLayout,
        _buffer_config: &BufferConfig,
        _context: &mut impl InitContext<Self>,
    ) -> bool {
        true
    }
}

impl Vst3Plugin for GameboyEmu {
    const VST3_CLASS_ID: [u8; 16] = *b"alexjankagbemula";

    const VST3_SUBCATEGORIES: &'static [Vst3SubCategory] =
        &[Vst3SubCategory::Distortion, Vst3SubCategory::Dynamics];
}

nih_export_vst3!(GameboyEmu);