/**
 * @file lv_ctr_indev.c
 *
 */

#if 1

/*********************
 *      INCLUDES
 *********************/
#include "lv_ctr_indev.h"
#include <3ds.h>

/*********************
 *      DEFINES
 *********************/

/**********************
 *      TYPEDEFS
 **********************/

/**********************
 *  STATIC PROTOTYPES
 **********************/

static void touchpad_read(lv_indev_t * indev, lv_indev_data_t * data);
static void keypad_read(lv_indev_t * indev, lv_indev_data_t * data);

/**********************
 *  STATIC VARIABLES
 **********************/
lv_indev_t * indev_touchpad;
lv_indev_t * indev_keypad;

/**********************
 *      MACROS
 **********************/

/**********************
 *   GLOBAL FUNCTIONS
 **********************/

void lv_ctr_indev_init(void)
{
    /*Register a touch screen input device*/
    indev_touchpad = lv_indev_create();
    lv_indev_set_type(indev_touchpad, LV_INDEV_TYPE_POINTER);
    lv_indev_set_read_cb(indev_touchpad, touchpad_read);

    /*Register a keypad input device*/
    indev_keypad = lv_indev_create();
    lv_indev_set_type(indev_keypad, LV_INDEV_TYPE_KEYPAD);
    lv_indev_set_read_cb(indev_keypad, keypad_read);
    
    /*Later you should create group(s) with `lv_group_t * group = lv_group_create()`,
     *add objects to the group with `lv_group_add_obj(group, obj)`
     *and assign this input device to group to navigate in it:
     *`lv_indev_set_group(indev_keypad, group);`*/
}

lv_indev_t * lv_ctr_indev_get_touchpad(void)
{
    return indev_touchpad;
}

lv_indev_t * lv_ctr_indev_get_keypad(void)
{
    return indev_keypad;
}

/**********************
 *   STATIC FUNCTIONS
 **********************/

/*------------------
 * Touchpad
 * -----------------*/

static void touchpad_read(lv_indev_t * indev_drv, lv_indev_data_t * data)
{
    static int32_t last_x = 0;
    static int32_t last_y = 0;
    touchPosition touch;

    /*Save the pressed coordinates and the state*/
    if(hidKeysHeld() & KEY_TOUCH) {
        hidTouchRead(&touch);
        last_x = touch.px;
        last_y = touch.py;
        data->state = LV_INDEV_STATE_PRESSED;
    }
    else {
        data->state = LV_INDEV_STATE_RELEASED;
    }

    /*Set the last pressed coordinates*/
    data->point.x = last_x;
    data->point.y = last_y;
}

/*------------------
 * Keypad
 * -----------------*/

/* What do you mean you can't handle more than one button at the same time!? */
static void keypad_read(lv_indev_t * indev_drv, lv_indev_data_t * data)
{
    static uint32_t last_key = 0;
    bool key_pressed = false;

    u32 kDown = hidKeysDown();
    u32 kHeld = hidKeysHeld();
    u32 kUp   = hidKeysUp();

    if (kHeld & KEY_UP) {
        last_key = LV_KEY_UP;
        key_pressed = true;
    }
    else if (kHeld & KEY_DOWN) {
        last_key = LV_KEY_DOWN;
        key_pressed = true;
    }
    else if (kHeld & KEY_LEFT) {
        last_key = LV_KEY_LEFT;
        key_pressed = true;
    }
    else if (kHeld & KEY_RIGHT) {
        last_key = LV_KEY_RIGHT;
        key_pressed = true;
    }
    else if (kHeld & KEY_A) {
        last_key = LV_KEY_ENTER;
        key_pressed = true;
    }
    else if (kHeld & KEY_B) {
        last_key = LV_KEY_ESC;
        key_pressed = true;
    }
    else if (kHeld & KEY_L) {
        last_key = LV_KEY_PREV;
        key_pressed = true;
    }
    else if (kHeld & KEY_R) {
        last_key = LV_KEY_NEXT;
        key_pressed = true;
    }

    data->key = last_key;

    if (key_pressed)
        data->state = LV_INDEV_STATE_PRESSED;
    else
        data->state = LV_INDEV_STATE_RELEASED;
}

#else /*Enable this file at the top*/

/*This dummy typedef exists purely to silence -Wpedantic.*/
typedef int keep_pedantic_happy;
#endif