#include "lets_split.h"
#include "action_layer.h"
#include "eeconfig.h"

extern keymap_config_t keymap_config;

// Each layer gets a name for readability, which is then used in the keymap matrix below.
// The underscores don't mean anything - you can have a layer called STUFF or any other name.
// Layer names don't all need to be of the same length, obviously, and you can also skip them
// entirely and just use numbers.
#define _QWERTY 0
#define _LOWER 1
#define _RAISE 2

enum custom_keycodes {
    QWERTY = SAFE_RANGE,
    LOWER,
    RAISE
};

// Fillers to make layering more clear
#define _______ KC_TRNS
#define XXXXXXX KC_NO

const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {

    /*
     *  q   w   e    r    t    _    _    y   u   i  o   p
     *  a   s   d    f    g    _    _    h   j   k  l   ;
     *  z   x   c    v    b    _    _    n   m   ,  .   /
     * esc tab gui shift bksp ctrl alt space fn  -  ' enter
     */
    [_QWERTY] = KEYMAP( \
            KC_Q,    KC_W,    KC_E,    KC_R,    KC_T,    KC_NO,   KC_NO,   KC_Y,    KC_U,     KC_I,    KC_O,    KC_P,    \
            KC_A,    KC_S,    KC_D,    KC_F,    KC_G,    KC_NO,   KC_NO,   KC_H,    KC_J,     KC_K,    KC_L,    KC_SCLN, \
            KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,    KC_NO,   KC_NO,   KC_N,    KC_M,     KC_COMM, KC_DOT,  KC_SLSH, \
            KC_ESC, KC_TAB, KC_LGUI,  KC_LSFT,  KC_BSPC, KC_LCTL, KC_LALT, KC_SPC,  LOWER,    KC_MINS, KC_QUOT, KC_ENT   \
            ),

    /*
     *  !       @     up     {    }    _     _  pgup    7     8     9    *
     *  #     left   down  right  $    _     _  pgdn    4     5     6    +
     *  [       ]      (     )    &    _     _    `     1     2     3    \
     * lower  insert  gui  shift bksp ctrl  alt space   fn    .     0    =
     */
    [_LOWER] = KEYMAP( \
            KC_EXLM,  KC_AT,   KC_UP,   KC_LCBR, KC_RCBR, KC_NO,   KC_NO,   KC_PGUP, KC_7,    KC_8,   KC_9, KC_ASTR, \
            KC_HASH,  KC_LEFT, KC_DOWN, KC_RGHT, KC_DEL,  KC_NO,   KC_NO,   KC_PGDN, KC_4,    KC_5,   KC_6, KC_PLUS, \
            KC_LBRC,  KC_RBRC, KC_LPRN, KC_RPRN, KC_AMPR, KC_NO,   KC_NO,   KC_GRV,  KC_1,    KC_2,   KC_3, KC_BSLS, \
            RAISE,    KC_INS,  KC_LGUI, KC_LSFT, KC_BSPC, KC_LCTL, KC_LALT, KC_SPC,  KC_TRNS, KC_DOT, KC_0, KC_EQL   \
            ),

    /*
     * insert home   up   end  pgup   _     _   up     F7    F8    F9   F10
     *  del   left  down right pgdn   _     _  down    F4    F5    F6   F11
     *   _   volup    _    _   reset  _     _          F1    F2    F3   F12
     *   _   voldn super shift bksp  ctrl  alt space   L0  prtsc scroll pause
     */
    [_RAISE] = KEYMAP( \
            KC_INS,  KC_HOME, KC_UP,   KC_END,  KC_PGUP, KC_NO,   KC_NO,   KC_UP,   KC_F7,    KC_F8,   KC_F9,   KC_F10, \
            KC_DEL,  KC_LEFT, KC_DOWN, KC_RGHT, KC_PGDN, KC_NO,   KC_NO,   KC_DOWN, KC_F4,    KC_F5,   KC_F6,   KC_F11, \
            KC_TRNS, KC_VOLU, KC_TRNS, KC_TRNS, RESET,   KC_NO,   KC_NO,   KC_TRNS, KC_F1,    KC_F2,   KC_F3,   KC_F12, \
            KC_NO,   KC_VOLD, KC_LGUI, KC_LSFT, KC_BSPC, KC_LCTL, KC_LALT, KC_SPC,  QWERTY,   KC_PSCR, KC_SLCK, KC_PAUS \
            )

};

#ifdef AUDIO_ENABLE
float tone_qwerty[][2]     = SONG(QWERTY_SOUND);
float tone_dvorak[][2]     = SONG(DVORAK_SOUND);
float tone_colemak[][2]    = SONG(COLEMAK_SOUND);
#endif

void persistent_default_layer_set(uint16_t default_layer) {
    eeconfig_update_default_layer(default_layer);
    default_layer_set(default_layer);
}

bool process_record_user(uint16_t keycode, keyrecord_t *record) {

    // The value to return
    bool return_value = false;

    switch (keycode) {
        case QWERTY:
            if (record->event.pressed) {
#ifdef AUDIO_ENABLE
                PLAY_SONG(tone_qwerty);
#endif
                persistent_default_layer_set(1UL<<_QWERTY);
            }
            break;

        case LOWER:
            if (record->event.pressed) {
                layer_on(_LOWER);
            } else {
                layer_off(_LOWER);
            }
            break;

        case RAISE:
            persistent_default_layer_set(1UL<<_RAISE);
            break;
        default:

            // If the keycode is not handled by any of the other cases, we
            // should return true
            return_value = true;
            break;
    }

    return return_value;
}
