#![no_std]
#![no_main]
#![deny(
    clippy::mem_forget,
    reason = "mem::forget is generally not safe to do with esp_hal types, especially those \
    holding buffers for the duration of a data transfer."
)]
#![deny(clippy::large_stack_frames)]

// use embedded_graphics::{pixelcolor::Rgb565, prelude::DrawTarget};
// use embedded_hal_bus::spi::ExclusiveDevice;
use esp_hal::{
    clock::CpuClock,
    delay::Delay,
    gpio::{Level, Output, OutputConfig},
    main,
    spi::master::{Config, Spi},
    time::Rate,
};

use esp_backtrace as _;
// use mipidsi::{Builder, interface::SpiInterface, models::ST7789};

use crate::display::{Color, Display, Position, Rgb565, SetAddressMode};

// use crate::display::{Color, Display, Position, Rgb565, Rotation};

extern crate alloc;

mod display;

// This creates a default app-descriptor required by the esp-idf bootloader.
// For more information see: <https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/system/app_image_format.html#application-description>
esp_bootloader_esp_idf::esp_app_desc!();

#[allow(
    clippy::large_stack_frames,
    reason = "it's not unusual to allocate larger buffers etc. in main"
)]
#[main]
fn main() -> ! {
    // generator version: 1.3.0
    // generator parameters: --chip esp32 -o esp32-wroom-32e -o alloc -o esp-backtrace -o log -o vscode

    esp_println::logger::init_logger_from_env();

    let config = esp_hal::Config::default().with_cpu_clock(CpuClock::max());
    let peripherals = esp_hal::init(config);

    // The following pins are used to bootstrap the chip. They are available
    // for use, but check the datasheet of the module for more information on them.
    // - GPIO0
    // - GPIO2
    // - GPIO5
    // - GPIO12
    // - GPIO15
    // These GPIO pins are in use by some feature of the module and should not be used.
    let _ = peripherals.GPIO6;
    let _ = peripherals.GPIO7;
    let _ = peripherals.GPIO8;
    let _ = peripherals.GPIO9;
    let _ = peripherals.GPIO10;
    let _ = peripherals.GPIO11;
    let _ = peripherals.GPIO16;
    let _ = peripherals.GPIO20;

    esp_alloc::heap_allocator!(#[esp_hal::ram(reclaimed)] size: 98768);

    let spi = Spi::new(
        peripherals.SPI2,
        Config::default()
            .with_frequency(Rate::from_mhz(40))
            .with_mode(esp_hal::spi::Mode::_2)
            .with_read_bit_order(esp_hal::spi::BitOrder::MsbFirst)
            .with_write_bit_order(esp_hal::spi::BitOrder::MsbFirst),
    )
    .unwrap()
    .with_sck(peripherals.GPIO5)
    .with_mosi(peripherals.GPIO18)
    .with_miso(peripherals.GPIO19)
    .with_cs(peripherals.GPIO21);

    let rst = Output::new(peripherals.GPIO14, Level::Low, OutputConfig::default());
    let dc = Output::new(peripherals.GPIO32, Level::Low, OutputConfig::default());

    let mut display = Display {
        spi,
        dc,
        rst,
        delay: Delay::new(),
    };

    display.init(SetAddressMode {
        color_order: display::ColorOrder::Bgr,
        ..Default::default()
    });
    display.set_tearing(display::TearingMode::Horizontal);

    display.draw_rect(
        Position::new(0, 0),
        Position::new(32, 32),
        Rgb565::yellow().as_color(),
    );

    let test_delay = Delay::new();

    let mut color = 0;

    loop {
        log::info!("Hello world: {}", color);

        color = (color + 50) % 200;

        display.draw_rect(
            Position::new(0, 0),
            Position::new(240, 240),
            Color {
                bytes: [color, color],
            },
        );

        // let delay_start = Instant::now();
        // while delay_start.elapsed() < Duration::from_millis(500) {}
        test_delay.delay_millis(1000);
    }

    // for inspiration have a look at the examples at https://github.com/esp-rs/esp-hal/tree/esp-hal-v1.1.0/examples
}