//
// Created by Luca on 8/29/2025.
//

#ifndef SHMINGO_HAL_SHAL_GPIO_REG_F072XB_H
#define SHMINGO_HAL_SHAL_GPIO_REG_F072XB_H

#include <stm32f072xb.h>
#include <cassert>

#include "SHAL_CORE.h"

#define AVAILABLE_PORTS 3
#define PINS_PER_PORT 16

#define AVAILABLE_GPIO \
    X(A0) X(A1) X(A2) X(A3) X(A4) X(A5) X(A6) X(A7) X(A8) X(A9) X(A10) X(A11) X(A12) X(A13) X(A14) X(A15) \
    X(B0) X(B1) X(B2) X(B3) X(B4) X(B5) X(B6) X(B7) X(B8) X(B9) X(B10) X(B11) X(B12) X(B13) X(B14) X(B15) \
    X(C0) X(C1) X(C2) X(C3) X(C4) X(C5) X(C6) X(C7) X(C8) X(C9) X(C10) X(C11) X(C12) X(C13) X(C14) X(C15)


//Build enum map of available GPIO pins
enum class GPIO_Key {
    #define X(key) key,
        AVAILABLE_GPIO
    #undef X
    NUM_GPIO,
    INVALID
};


constexpr SHAL_Peripheral getGPIORegister(const GPIO_Key g){
    switch(g) {
        case GPIO_Key::A0: return {GPIOA,0};
        case GPIO_Key::A1: return {GPIOA,1};
        case GPIO_Key::A2: return {GPIOA,2};
        case GPIO_Key::A3: return {GPIOA,3};
        case GPIO_Key::A4: return {GPIOA,4};
        case GPIO_Key::A5: return {GPIOA,5};
        case GPIO_Key::A6: return {GPIOA,6};
        case GPIO_Key::A7: return {GPIOA,7};
        case GPIO_Key::A8: return {GPIOA,8};
        case GPIO_Key::A9: return {GPIOA,9};
        case GPIO_Key::A10: return {GPIOA,10};
        case GPIO_Key::A11: return {GPIOA,11};
        case GPIO_Key::A12: return {GPIOA,12};
        case GPIO_Key::A13: return {GPIOA,13};
        case GPIO_Key::A14: return {GPIOA,14};
        case GPIO_Key::A15: return {GPIOA,15};
        case GPIO_Key::B0: return {GPIOB,0};
        case GPIO_Key::B1: return {GPIOB,1};
        case GPIO_Key::B2: return {GPIOB,2};
        case GPIO_Key::B3: return {GPIOB,3};
        case GPIO_Key::B4: return {GPIOB,4};
        case GPIO_Key::B5: return {GPIOB,5};
        case GPIO_Key::B6: return {GPIOB,6};
        case GPIO_Key::B7: return {GPIOB,7};
        case GPIO_Key::B8: return {GPIOB,8};
        case GPIO_Key::B9: return {GPIOB,9};
        case GPIO_Key::B10: return {GPIOB,10};
        case GPIO_Key::B11: return {GPIOB,11};
        case GPIO_Key::B12: return {GPIOB,12};
        case GPIO_Key::B13: return {GPIOB,13};
        case GPIO_Key::B14: return {GPIOB,14};
        case GPIO_Key::B15: return {GPIOB,15};
        case GPIO_Key::C0: return {GPIOC,0};
        case GPIO_Key::C1: return {GPIOC,1};
        case GPIO_Key::C2: return {GPIOC,2};
        case GPIO_Key::C3: return {GPIOC,3};
        case GPIO_Key::C4: return {GPIOC,4};
        case GPIO_Key::C5: return {GPIOC,5};
        case GPIO_Key::C6: return {GPIOC,6};
        case GPIO_Key::C7: return {GPIOC,7};
        case GPIO_Key::C8: return {GPIOC,8};
        case GPIO_Key::C9: return {GPIOC,9};
        case GPIO_Key::C10: return {GPIOC,10};
        case GPIO_Key::C11: return {GPIOC,11};
        case GPIO_Key::C12: return {GPIOC,12};
        case GPIO_Key::C13: return {GPIOC,13};
        case GPIO_Key::C14: return {GPIOC,14};
        case GPIO_Key::C15: return {GPIOC,15};
        case GPIO_Key::INVALID:
        case GPIO_Key::NUM_GPIO:
            assert(false);
            return SHAL_Peripheral(nullptr,0); //Unreachable
    }
    __builtin_unreachable();
}

constexpr SHAL_Peripheral_Register getGPIORCCEnable(const GPIO_Key g){
    switch(g) {
        case GPIO_Key::A0:
        case GPIO_Key::A1:
        case GPIO_Key::A2:
        case GPIO_Key::A3:
        case GPIO_Key::A4:
        case GPIO_Key::A5:
        case GPIO_Key::A6:
        case GPIO_Key::A7:
        case GPIO_Key::A8:
        case GPIO_Key::A9:
        case GPIO_Key::A10:
        case GPIO_Key::A11:
        case GPIO_Key::A12:
        case GPIO_Key::A13:
        case GPIO_Key::A14:
        case GPIO_Key::A15:
            return {&RCC->AHBENR, RCC_AHBENR_GPIOAEN_Pos};
        case GPIO_Key::B0:
        case GPIO_Key::B1:
        case GPIO_Key::B2:
        case GPIO_Key::B3:
        case GPIO_Key::B4:
        case GPIO_Key::B5:
        case GPIO_Key::B6:
        case GPIO_Key::B7:
        case GPIO_Key::B8:
        case GPIO_Key::B9:
        case GPIO_Key::B10:
        case GPIO_Key::B11:
        case GPIO_Key::B12:
        case GPIO_Key::B13:
        case GPIO_Key::B14:
        case GPIO_Key::B15:
            return {&RCC->AHBENR, RCC_AHBENR_GPIOBEN_Pos};
        case GPIO_Key::C0:
        case GPIO_Key::C1:
        case GPIO_Key::C2:
        case GPIO_Key::C3:
        case GPIO_Key::C4:
        case GPIO_Key::C5:
        case GPIO_Key::C6:
        case GPIO_Key::C7:
        case GPIO_Key::C8:
        case GPIO_Key::C9:
        case GPIO_Key::C10:
        case GPIO_Key::C11:
        case GPIO_Key::C12:
        case GPIO_Key::C13:
        case GPIO_Key::C14:
        case GPIO_Key::C15:
            return {&RCC->AHBENR, RCC_AHBENR_GPIOCEN_Pos};
        case GPIO_Key::INVALID:
        case GPIO_Key::NUM_GPIO:
            assert(false);
            return SHAL_Peripheral_Register(nullptr,0); //Unreachable
    }
    __builtin_unreachable();
}

constexpr unsigned int getGPIOPortNumber(const GPIO_Key g){
    switch(g) {
        case GPIO_Key::A0:
        case GPIO_Key::A1:
        case GPIO_Key::A2:
        case GPIO_Key::A3:
        case GPIO_Key::A4:
        case GPIO_Key::A5:
        case GPIO_Key::A6:
        case GPIO_Key::A7:
        case GPIO_Key::A8:
        case GPIO_Key::A9:
        case GPIO_Key::A10:
        case GPIO_Key::A11:
        case GPIO_Key::A12:
        case GPIO_Key::A13:
        case GPIO_Key::A14:
        case GPIO_Key::A15:
            return 0;
        case GPIO_Key::B0:
        case GPIO_Key::B1:
        case GPIO_Key::B2:
        case GPIO_Key::B3:
        case GPIO_Key::B4:
        case GPIO_Key::B5:
        case GPIO_Key::B6:
        case GPIO_Key::B7:
        case GPIO_Key::B8:
        case GPIO_Key::B9:
        case GPIO_Key::B10:
        case GPIO_Key::B11:
        case GPIO_Key::B12:
        case GPIO_Key::B13:
        case GPIO_Key::B14:
        case GPIO_Key::B15:
            return 1;
        case GPIO_Key::C0:
        case GPIO_Key::C1:
        case GPIO_Key::C2:
        case GPIO_Key::C3:
        case GPIO_Key::C4:
        case GPIO_Key::C5:
        case GPIO_Key::C6:
        case GPIO_Key::C7:
        case GPIO_Key::C8:
        case GPIO_Key::C9:
        case GPIO_Key::C10:
        case GPIO_Key::C11:
        case GPIO_Key::C12:
        case GPIO_Key::C13:
        case GPIO_Key::C14:
        case GPIO_Key::C15:
            return 2;
        case GPIO_Key::INVALID:
        case GPIO_Key::NUM_GPIO:
            assert(false);
            return 0;
    }
    __builtin_unreachable();
}

#endif //SHMINGO_HAL_SHAL_GPIO_REG_F072XB_H