#include <windows.h>
#include <stdbool.h>
#include <stdint.h>

#include <assert.h>
#include <stdlib.h>
#include <string.h>

#include "board/io4.h"

#include "hkbhook/hkb-dll.h"

#include "util/dprintf.h"

bool hkb_io_coin = false;
uint16_t hkb_io_coins = 0;

static HRESULT hkb_io4_poll(void *ctx, struct io4_state *state);

static const struct io4_ops hkb_io4_ops = {
    .poll = hkb_io4_poll,
};

HRESULT hkb_io4_hook_init(const struct io4_config *cfg)
{
    HRESULT hr;

    assert(hkb_dll.init != NULL);

    hr = io4_hook_init(cfg, &hkb_io4_ops, NULL);

    if (FAILED(hr)) {
        return hr;
    }

    return hkb_dll.init();
}

static HRESULT hkb_io4_poll(void *ctx, struct io4_state *state)
{
    uint8_t opbtn;
    uint8_t gamebtn;
    HRESULT hr;

    assert(hkb_dll.poll != NULL);

    memset(state, 0, sizeof(*state));

    hr = hkb_dll.poll(&opbtn, &gamebtn);

    if (FAILED(hr)) {
        return hr;
    }

    if (opbtn & HKB_IO_OPBTN_TEST) {
        state->buttons[0] |= IO4_BUTTON_TEST;
    }

    if (opbtn & HKB_IO_OPBTN_SERVICE) {
        state->buttons[0] |= IO4_BUTTON_SERVICE;
    }

    if (opbtn & HKB_IO_OPBTN_COIN) {
        if (!hkb_io_coin) {
            hkb_io_coin = true;
            hkb_io_coins++;
            state->buttons[0] |= 1 << 25;
        }
    }
    else {
        hkb_io_coin = false;
    }

    state->chutes[0] = 128 + 256 * hkb_io_coins;

    if (gamebtn & HKB_IO_GAMEBTN_RIGHT) {
        state->buttons[1] |= 1 << 1;
    }

    if (gamebtn & HKB_IO_GAMEBTN_LEFT) {
        state->buttons[1] |= 1 << 0;
    }

    if (gamebtn & HKB_IO_GAMEBTN_UP) {
        state->buttons[1] |= 1 << 15;
    }

    if (gamebtn & HKB_IO_GAMEBTN_DOWN) {
        state->buttons[1] |= 1 << 14;
    }

    if (gamebtn & HKB_IO_GAMEBTN_ENTER) {
        state->buttons[1] |= 1 << 13;
    }

    if (gamebtn & HKB_IO_GAMEBTN_CANCEL) {
        state->buttons[1] |= 1 << 12;
    }

    if (gamebtn & HKB_IO_GAMEBTN_ARR_RIGHT) {
        state->buttons[1] |= 1 << 2;
    }

    if (gamebtn & HKB_IO_GAMEBTN_ARR_LEFT) {
        state->buttons[1] |= 1 << 3;
    }

    return S_OK;
}