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pub use embassy_nrf::config::Config;
use embassy_nrf::gpio::{AnyPin, Input, Level, Output, OutputDrive, Pin, Pull};
pub use embassy_nrf::interrupt::Priority;
use embassy_nrf::peripherals::{
    P0_00, P0_01, P0_03, P0_04, P0_05, P0_06, P0_08, P0_09, P0_10, P0_12, P0_13, P0_16, P0_17, P0_20, P0_26, P1_00,
    P1_02, P1_08, PPI_CH0, PPI_CH1, PWM0, RNG, SAADC, TIMER0, TWISPI0, UARTE0,
};
pub use embassy_nrf::wdt;

use crate::display::LedMatrix as LedMatrixDriver;

/// LED matrix peripheral for the micro:bit
pub type LedMatrix = LedMatrixDriver<Output<'static, AnyPin>, 5, 5>;

/// Button 'A'
pub type Button = Input<'static, AnyPin>;

/// Represents all the peripherals and pins available for the BBC micro:bit.
pub struct Microbit {
    /// LED matrix display
    pub display: LedMatrix,
    /// Button 'A'
    pub btn_a: Button,
    /// Button 'B'
    pub btn_b: Button,
    /// UART0 peripheral
    pub uarte0: UARTE0,
    /// TIMER0 peripheral
    pub timer0: TIMER0,
    /// Speaker pin
    pub speaker: P0_00,
    /// Microphone pin
    pub microphone: P0_05,
    /// Microphone pin enable
    pub micen: P0_20,

    /// P1 connector pin
    pub p1: P0_03,
    /// P2 connector pin
    pub p2: P0_04,
    /// P8 connector pin
    pub p8: P0_10,
    /// P9 connector pin
    pub p9: P0_09,
    /// P12 connector pin
    pub p12: P0_12,
    /// P13 connector pin
    pub p13: P0_17,
    /// P14 connector pin
    pub p14: P0_01,
    /// P15 connector pin
    pub p15: P0_13,
    /// P16 connector pin
    pub p16: P1_02,
    /// P17 connector pin
    pub p17: P0_06,
    /// P19 connector pin
    pub p19: P0_26,
    /// P20 connector pin
    pub p20: P1_00,
    /// P22 connector pin
    pub p22: P0_08,
    /// P23 connector pin
    pub p23: P0_16,
    /// P25 connector pin
    pub p25: P1_08,

    /// SPI/I2C peripheral
    pub twispi0: TWISPI0,
    /// PWM0 peripheral
    pub pwm0: PWM0,
    /// PPI channel 0
    pub ppi_ch0: PPI_CH0,
    /// PPI channel 1
    pub ppi_ch1: PPI_CH1,
    /// Random number generator
    pub rng: RNG,
    /// Analog digital converter
    pub saadc: SAADC,
}

impl Default for Microbit {
    fn default() -> Self {
        Self::new(Default::default())
    }
}

impl Microbit {
    /// Create a new instance based on HAL configuration
    pub fn new(config: embassy_nrf::config::Config) -> Self {
        let p = embassy_nrf::init(config);
        // LED Matrix
        let rows = [
            output_pin(p.P0_21.degrade()),
            output_pin(p.P0_22.degrade()),
            output_pin(p.P0_15.degrade()),
            output_pin(p.P0_24.degrade()),
            output_pin(p.P0_19.degrade()),
        ];

        let cols = [
            output_pin(p.P0_28.degrade()),
            output_pin(p.P0_11.degrade()),
            output_pin(p.P0_31.degrade()),
            output_pin(p.P1_05.degrade()),
            output_pin(p.P0_30.degrade()),
        ];

        Self {
            display: LedMatrixDriver::new(rows, cols),
            btn_a: Input::new(p.P0_14.degrade(), Pull::Up),
            btn_b: Input::new(p.P0_23.degrade(), Pull::Up),
            uarte0: p.UARTE0,
            timer0: p.TIMER0,
            speaker: p.P0_00,
            microphone: p.P0_05,
            micen: p.P0_20,
            p1: p.P0_03,
            p2: p.P0_04,
            p8: p.P0_10,
            p9: p.P0_09,
            p12: p.P0_12,
            p13: p.P0_17,
            p14: p.P0_01,
            p15: p.P0_13,
            p16: p.P1_02,
            p17: p.P0_06,
            p19: p.P0_26,
            p20: p.P1_00,
            p22: p.P0_08,
            p23: p.P0_16,
            p25: p.P1_08,
            ppi_ch0: p.PPI_CH0,
            ppi_ch1: p.PPI_CH1,
            twispi0: p.TWISPI0,
            pwm0: p.PWM0,
            rng: p.RNG,
            saadc: p.SAADC,
        }
    }
}

fn output_pin(pin: AnyPin) -> Output<'static, AnyPin> {
    Output::new(pin, Level::Low, OutputDrive::Standard)
}