use core::alloc::Layout;
use core::cell::{OnceCell, RefCell};
use core::fmt::Write;
use core::time::Duration;

use alloc::boxed::Box;
use alloc::rc::Rc;
use alloc::vec;
use bt_hci::controller::ExternalController;
use critical_section::Mutex;
use embassy_embedded_hal::adapter::BlockingAsync;
use embassy_executor::Spawner;
use embassy_time::Timer;
use esp_alloc::{HeapRegion, MemoryCapability};
use esp_hal::clock::CpuClock;
use esp_hal::dma::{BurstConfig, DmaDescriptor, DmaTxBuf, ExternalBurstConfig};
use esp_hal::gpio::{Flex, Input, InputConfig, Io, Level, Output, OutputConfig, Pull};
use esp_hal::handler;
use esp_hal::i2c::master::{I2c, I2cAddress};
use esp_hal::interrupt::Priority;
use esp_hal::interrupt::software::SoftwareInterruptControl;
use esp_hal::lcd_cam::LcdCam;
use esp_hal::lcd_cam::lcd::dpi::Dpi;
use esp_hal::mcpwm::{McPwm, PeripheralClockConfig};
use esp_hal::peripherals::Peripherals;
use esp_hal::psram::{FlashFreq, PsramConfig, PsramSize, SpiRamFreq, SpiTimingConfigCoreClock};
use esp_hal::rng::TrngSource;
use esp_hal::system::Stack;
use esp_hal::time::Instant;
use esp_hal::timer::timg::TimerGroup;
use esp_hal::uart::{Uart, UartTx};
use esp_hal::usb_serial_jtag::{UsbSerialJtag, UsbSerialJtagTx};
use esp_hal::{Blocking, ram};
use esp_radio::Controller;
use esp_radio::ble::controller::BleConnector;
use esp_rtos::embassy::{Executor, InterruptExecutor};
use esp_storage::FlashStorage;
use itertools::chain;
use log::{LevelFilter, Log, error, info};
use rmk::channel::EVENT_CHANNEL;
use rmk::config::{BehaviorConfig, PositionalConfig, RmkConfig, StorageConfig, VialConfig};
use rmk::debounce::default_debouncer::DefaultDebouncer;
use rmk::embassy_futures::yield_now;
use rmk::input_device::Runnable;
use rmk::{join_all};
use rmk::keyboard::Keyboard;
use rmk::storage::async_flash_wrapper;
use rmk::{initialize_keymap_and_storage, run_devices, run_rmk};
use slint::platform::software_renderer::{Rgb565Pixel, TargetPixel};
use slint::{ComponentHandle, PhysicalSize, WindowSize};
use slint::platform::Platform;
use static_cell::StaticCell;

static ALT_LOGGER_UART: Mutex<RefCell<Option<UartTx<'static, Blocking>>>> = Mutex::new(RefCell::new(None));

struct AlternativeLogger;

impl Log for AlternativeLogger {
    #[allow(unused)]
    fn enabled(&self, _: &log::Metadata) -> bool {
        // Filtered by `log` already
        true
    }

    #[allow(unused)]
    fn log(&self, record: &log::Record) {
        critical_section::with(|cs| {
            let mut uart = ALT_LOGGER_UART.borrow(cs).borrow_mut();
            let mut uart = uart.as_mut().unwrap();

            print_log_record(&mut uart, record);
        })
    }

    fn flush(&self) {}
}

    const RESET: &str = "\u{001B}[0m";
    const RED: &str = "\u{001B}[31m";
    const GREEN: &str = "\u{001B}[32m";
    const YELLOW: &str = "\u{001B}[33m";
    const BLUE: &str = "\u{001B}[34m";
    const CYAN: &str = "\u{001B}[35m";

#[cfg(feature = "alt-log")]
macro_rules! println {
    () => {{
        do_print(Default::default());
    }};

    ($($arg:tt)*) => {{
        do_print(::core::format_args!($($arg)*));
    }};
}

#[cfg(not(feature = "alt-log"))]
use esp_println::println;

fn do_print(args: core::fmt::Arguments<'_>) {
    critical_section::with(|cs| {
        let mut uart = ALT_LOGGER_UART.borrow(cs).borrow_mut();
        let mut uart = uart.as_mut().unwrap();
        uart.write_fmt(args).unwrap();
        uart.write_str("\n").unwrap();
        uart.flush().unwrap();
    })
}

fn print_log_record(uart: &mut UartTx<'_, Blocking>, record: &log::Record) {
    let color = match record.level() {
        log::Level::Error => RED,
        log::Level::Warn => YELLOW,
        log::Level::Info => GREEN,
        log::Level::Debug => BLUE,
        log::Level::Trace => CYAN,
    };
    let reset = RESET;
    let args = format_args!("{}{:>5} - {}{}\n", color, record.level(), record.args(), reset);
    uart.write_fmt(args).unwrap();
    uart.flush().unwrap();
}

#[cfg(feature = "alt-log")]
#[panic_handler]
fn panic_handler(info: &core::panic::PanicInfo) -> ! {
    use esp_backtrace::Backtrace;

    println!("{RED}");
    println!("====================== PANIC ======================");
    println!("{info}{RESET}");
    println!("");
    println!("Backtrace:");
    println!("");

    let backtrace = Backtrace::capture();

    for frame in backtrace.frames() {
        println!("0x{:x}", frame.program_counter());
    }

    loop {}
}

pub fn setup_alternative_logging(alt_uart: UartTx<'static, Blocking>, level_filter: LevelFilter)
{
    critical_section::with(|cs| {
        *ALT_LOGGER_UART.borrow(cs).borrow_mut() = Some(alt_uart);
    });

    unsafe {
        log::set_logger_racy(&AlternativeLogger).unwrap();
        log::set_max_level_racy(level_filter);
    }
}