/* Copyright 2020 Takeshi Nishio
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
#include QMK_KEYBOARD_H

// Defines names for use in layer keycodes and the keymap
enum layer_number {
    _MAC = 0,
    _WIN,
    _NUM,
    _LOWER,
    _RAISE,
    _NUM_RAISE,
    _ADJUST
};

// Tap Dance
enum tap_dances{
    TD_LSFT_CAPS = 0,
    TD_ESC_NUM,
};

// Tap Dance state
enum {
    SINGLE_TAP = 1,
    DOUBLE_TAP,
    TRIPLE_TAP,
    TAP_HOLD,
};

// Declare the functions to be used with your tap dance key(s)
// Function associated with all tap dances
uint8_t cur_dance(qk_tap_dance_state_t *state);
// Functions associated with individual tap dances
void ql_finished(qk_tap_dance_state_t *state, void *user_data);
void ql_reset(qk_tap_dance_state_t *state, void *user_data);

// Tap Dance definitions
qk_tap_dance_action_t tap_dance_actions[] = {
    [TD_LSFT_CAPS] = ACTION_TAP_DANCE_DOUBLE(KC_LSFT, KC_CAPS),
    [TD_ESC_NUM] = ACTION_TAP_DANCE_FN_ADVANCED(NULL, ql_finished, ql_reset),
};

uint16_t get_tapping_term(uint16_t keycode, keyrecord_t *record) {
    switch (keycode) {
        case TD(TD_ESC_NUM):
            return 275;
        default:
            return TAPPING_TERM;
    }
}

// Defines the keycodes used by our macros in process_record_user
enum custom_keycodes {
  MAC = SAFE_RANGE,
  WIN,
};

// Key Macro
#define ESC_NUM TD(TD_ESC_NUM)
#define S_CAP   TD(TD_LSFT_CAPS)
#define SP_RAI  LT(_RAISE, KC_SPC)
#define SP_NRAI LT(_NUM_RAISE, KC_SPC)
#define SP_SFT  MT(MOD_LSFT, KC_SPC)
#define C_SLSH  RCTL_T(KC_SLSH)
#define CT_E    LCTL(KC_E)
#define CT_A    LCTL(KC_A)
#define ALT_GRV LALT(KC_GRV)
#define LOWER   MO(_LOWER)
#define NUM     TG(_NUM)


const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
    [_MAC] = LAYOUT_ansi(
        ESC_NUM,KC_1,   KC_2,   KC_3,   KC_4,   KC_5,   KC_6,   KC_7,   KC_8,   KC_9,   KC_0,   KC_MINS,KC_EQL, KC_BSLS,KC_GRV,
        KC_TAB,     KC_Q,   KC_W,   KC_E,   KC_R,   KC_T,   KC_Y,   KC_U,   KC_I,   KC_O,   KC_P,   KC_BSPC,    KC_LBRC,KC_RBRC,
        KC_LCTL,    KC_A,   KC_S,   KC_D,   KC_F,   KC_G,   KC_H,   KC_J,   KC_K,   KC_L,   KC_SCLN,KC_ENT,             KC_QUOT,
        S_CAP,          KC_Z,   KC_X,   KC_C,   KC_V,   KC_B,   KC_N,   KC_M,   KC_COMM,KC_DOT, C_SLSH, KC_RSFT,KC_UP,  LOWER,
        KC_MUTE,KC_LANG2,KC_LALT,KC_LGUI,       SP_SFT,         SP_RAI,         KC_RGUI,KC_RALT,KC_LANG1,KC_LEFT,KC_DOWN,KC_RGHT
    ),
    [_WIN] = LAYOUT_ansi(
        _______,_______,_______,_______,_______,_______,_______,_______,_______,_______,_______,_______,_______,_______,_______,
        _______,    _______,_______,_______,_______,_______,_______,_______,_______,_______,_______,_______,    _______,_______,
        _______,    _______,_______,_______,_______,_______,_______,_______,_______,_______,_______,_______,            _______,
        _______,        _______,_______,_______,_______,_______,_______,_______,_______,_______,_______,_______,_______,_______,
        _______,ALT_GRV,KC_LGUI,KC_LALT,        _______,        _______,        KC_RALT,KC_APP, ALT_GRV,_______,_______,_______
    ),
    [_NUM] = LAYOUT_ansi(
        _______,_______,_______,_______,_______,_______,_______,XXXXXXX,KC_PSLS,KC_PSLS,KC_PAST,_______,_______,_______,_______,
        _______,    _______,_______,_______,_______,_______,_______,KC_P7,  KC_P8,  KC_P9,  KC_PPLS,_______,    _______,_______,
        _______,    _______,_______,_______,_______,_______,_______,KC_P4,  KC_P5,  KC_P6,  XXXXXXX,_______,            _______,
        _______,        _______,_______,_______,_______,_______,_______,KC_P1,  KC_P2,  KC_P3,  KC_PENT,_______,_______,_______,
        _______,_______,_______,_______,        _______,        SP_NRAI,        KC_P0,  KC_PDOT,_______,_______,_______,_______
    ),
    [_LOWER] = LAYOUT_ansi(
        KC_PAUS,KC_F1,  KC_F2,  KC_F3,  KC_F4,  KC_F5,  KC_F6,  KC_F7,  KC_F8,  KC_F9,  KC_F10, KC_F11, KC_F12, KC_INS, KC_DEL,
        KC_PSCR,    _______,_______,_______,_______,_______,_______,_______,_______,_______,KC_HOME,KC_UP,      KC_END, KC_VOLU,
        _______,    _______,_______,_______,_______,_______,_______,_______,_______,KC_PGUP,KC_LEFT,KC_RGHT,            KC_VOLD,
        _______,        _______,_______,_______,_______,_______,_______,_______,_______,KC_PGDN,KC_DOWN,_______,KC_PGUP,_______,
        _______,_______,_______,_______,        _______,        _______,         _______,_______,_______,KC_HOME,KC_PGDN,KC_END
    ),
    [_RAISE] = LAYOUT_ansi(
        KC_PAUS,KC_F1,  KC_F2,  KC_F3,  KC_F4,  KC_F5,  KC_F6,  KC_F7,  KC_F8,  KC_F9,  KC_F10, KC_F11, KC_F12, KC_INS, KC_DEL,
        KC_PSCR,    _______,_______,CT_E,   _______,_______,_______,_______,_______,_______,KC_PGUP,KC_DEL,     _______,_______,
        _______,    CT_A,   _______,KC_DEL, KC_RGHT,KC_ESC, KC_LEFT,KC_DOWN,KC_UP,  KC_RGHT,KC_MINS,KC_INS,             _______,
        _______,        _______,_______,_______,_______,KC_LEFT,KC_PGDN,KC_ENT, _______,KC_MRWD,KC_MFFD,_______,KC_PGUP,_______,
        _______,_______,_______,_______,        _______,        _______,        _______,_______,_______,KC_HOME,KC_PGDN,KC_END
    ),
    [_NUM_RAISE] = LAYOUT_ansi(
        KC_ESC, KC_1,   KC_2,   KC_3,   KC_4,   KC_5,   KC_6,   KC_7,   KC_8,   KC_9,   KC_0,   KC_MINS,KC_EQL, KC_BSLS,KC_GRV,
        KC_TAB,     KC_Q,   KC_W,   KC_E,   KC_R,   KC_T,   KC_Y,   KC_U,   KC_I,   KC_O,   KC_P,   KC_BSPC,    KC_LBRC,KC_RBRC,
        KC_LCTL,    KC_A,   KC_S,   KC_D,   KC_F,   KC_G,   KC_H,   KC_J,   KC_K,   KC_L,   KC_SCLN, KC_ENT,            KC_QUOT,
        S_CAP,          KC_Z,   KC_X,   KC_C,   KC_V,   KC_B,   KC_N,   KC_M,   KC_COMM,KC_DOT, C_SLSH, KC_RSFT,KC_UP,  _______,
        _______,_______,_______,_______,        _______,        _______,        _______,_______,_______,_______,_______,_______
    ),
    [_ADJUST] = LAYOUT_ansi(
        _______,RGB_HUI,RGB_SAI,RGB_VAI,_______,_______,_______,_______,_______,_______,_______,_______,_______,_______,_______,
        _______,    _______,WIN,    _______,QK_BOOT,  _______,RGB_HUI,RGB_SAI,RGB_VAI,_______,RGB_RMOD,_______,   _______,_______,
        _______,    AU_TOG, CK_TOGG,MU_TOG, MU_MOD, _______,RGB_HUD,RGB_SAD,RGB_VAD,RGB_TOG,RGB_MOD,_______,            _______,
        _______,        CK_RST, CK_DOWN,CK_UP  ,_______,_______,NUM,     MAC,   _______,_______,_______,_______,_______,_______,
        _______,_______,_______,_______,        _______,        _______,        _______,_______,_______,_______,_______,_______
    )
};

bool process_record_user(uint16_t keycode, keyrecord_t *record) {
    switch (keycode) {
        case MAC: // Change default ayer --> Write to EEPROM
            if (record->event.pressed) {
                set_single_persistent_default_layer(_MAC);
            }
            return false;
            break;
        case WIN: // Change default ayer --> Write to EEPROM
            if (record->event.pressed) {
                set_single_persistent_default_layer(_WIN);
            }
            return false;
            break;
        default:
            break;
    }
    return true;
}

//------------------------------------------------------------------------------
// RGB Light settings
#ifdef RGBLIGHT_LAYERS

// Indicator LED settings
#define JONES_LED_INDICATOR_INDEX 12        // where to start indicator
#define JONES_LED_INDICATOR_COUNT 2         // how many leds for indicator
#define JONES_LED_INDICATOR_CHANGE_COUNT 1  // how meny leds to change color for temporally layer
#define JONES_LED_DIMMER_LEVEL 200          // brightness dimmer

// for Default layer (= Base layer)
const rgblight_segment_t PROGMEM my_mac_layer[] = RGBLIGHT_LAYER_SEGMENTS(
    {JONES_LED_INDICATOR_INDEX , JONES_LED_INDICATOR_COUNT, HSV_WHITE - JONES_LED_DIMMER_LEVEL}
);
const rgblight_segment_t PROGMEM my_win_layer[] = RGBLIGHT_LAYER_SEGMENTS(
    {JONES_LED_INDICATOR_INDEX , JONES_LED_INDICATOR_COUNT, HSV_BLUE - JONES_LED_DIMMER_LEVEL}
);
const rgblight_segment_t PROGMEM my_num_layer[] = RGBLIGHT_LAYER_SEGMENTS(
    {JONES_LED_INDICATOR_INDEX , JONES_LED_INDICATOR_COUNT, HSV_YELLOW - JONES_LED_DIMMER_LEVEL}
);

// for temporal layer
const rgblight_segment_t PROGMEM my_caps_layer[] = RGBLIGHT_LAYER_SEGMENTS(
    {JONES_LED_INDICATOR_INDEX , JONES_LED_INDICATOR_CHANGE_COUNT, HSV_MAGENTA - JONES_LED_DIMMER_LEVEL}
);

const rgblight_segment_t PROGMEM my_lower_layer[] = RGBLIGHT_LAYER_SEGMENTS(
    {JONES_LED_INDICATOR_INDEX , JONES_LED_INDICATOR_CHANGE_COUNT, HSV_GREEN - JONES_LED_DIMMER_LEVEL}
);

const rgblight_segment_t PROGMEM my_raise_layer[] = RGBLIGHT_LAYER_SEGMENTS(
    {JONES_LED_INDICATOR_INDEX , JONES_LED_INDICATOR_CHANGE_COUNT, HSV_CYAN - JONES_LED_DIMMER_LEVEL}
);

const rgblight_segment_t PROGMEM my_num_raise_layer[] = RGBLIGHT_LAYER_SEGMENTS(
    {JONES_LED_INDICATOR_INDEX , JONES_LED_INDICATOR_CHANGE_COUNT, HSV_GOLD - JONES_LED_DIMMER_LEVEL}
);

const rgblight_segment_t PROGMEM my_adjust_layer[] = RGBLIGHT_LAYER_SEGMENTS(
    {JONES_LED_INDICATOR_INDEX , JONES_LED_INDICATOR_CHANGE_COUNT, HSV_RED - JONES_LED_DIMMER_LEVEL}
);

// Define the array of layers. Later layers take precedence
const rgblight_segment_t* const PROGMEM my_rgb_layers[] = RGBLIGHT_LAYERS_LIST(
    my_mac_layer,
    my_win_layer,
    my_num_layer,
    my_caps_layer,
    my_lower_layer,
    my_raise_layer,
    my_num_raise_layer,
    my_adjust_layer
);

void keyboard_post_init_user(void) {
    // Enable the LED layers
    rgblight_layers = my_rgb_layers;
}

// Enabling and disabling lighting layers
layer_state_t layer_state_set_user(layer_state_t state) {
    state = update_tri_layer_state(state, _LOWER, _RAISE, _ADJUST);

    rgblight_set_layer_state(2, layer_state_cmp(state, _NUM));
    rgblight_set_layer_state(4, layer_state_cmp(state, _LOWER));
    rgblight_set_layer_state(5, layer_state_cmp(state, _RAISE));
    rgblight_set_layer_state(6, layer_state_cmp(state, _NUM_RAISE));
    rgblight_set_layer_state(7, layer_state_cmp(state, _ADJUST));

    return state;
}

// Enabling and disabling lighting layers for default layer
layer_state_t default_layer_state_set_user(layer_state_t state) {
    rgblight_set_layer_state(0, layer_state_cmp(state, _MAC));
    rgblight_set_layer_state(1, layer_state_cmp(state, _WIN));
    rgblight_set_layer_state(2, layer_state_cmp(state, _NUM));

    return state;
}

bool led_update_user(led_t led_state) {
    rgblight_set_layer_state(3, led_state.caps_lock);
    return true;
}
#endif


//------------------------------------------------------------------------------
// Rotary Encoder
bool encoder_update_user(uint8_t index, bool clockwise) {
    if (index == 0) { /* First encoder, Right side */
        if (clockwise) {
            tap_code(KC_VOLD);
        } else {
            tap_code(KC_VOLU);
        }
    }
    if (index == 1) { /* Second encoder, Left side */
        switch(biton32(layer_state)) {
            case _LOWER:
                if (clockwise) {
                    rgblight_decrease_hue();
                } else {
                    rgblight_increase_hue();
                }
                break;
            case _RAISE:
                if (clockwise) {
                    rgblight_decrease_val();
                } else {
                    rgblight_increase_val();
                }
                break;
            case _ADJUST:
                if (clockwise) {
                    rgblight_step_reverse();
                } else {
                    rgblight_step();
                }
                break;
            default:
                if (clockwise) {
                    tap_code(KC_VOLD);
                } else {
                    tap_code(KC_VOLU);
                }
                break;
        }
    }
    return true;
}


//------------------------------------------------------------------------------
// Tap Dance function


typedef struct {
    bool is_press_action;
    uint8_t state;
} tap;

// Determine the current tap dance state
uint8_t cur_dance(qk_tap_dance_state_t *state) {
    if (state->count == 1) {
        if (!state->pressed) {
            return SINGLE_TAP;
        } else {
            return TAP_HOLD;
        }
    } else if (state->count == 2) {
        if (!state->pressed) {
            return DOUBLE_TAP;
        } else {
            return TAP_HOLD;
        }
    } else if (state->count == 3) {
        if (!state->pressed) {
            return TRIPLE_TAP;
        } else {
            return TAP_HOLD;
        }
    } else {
        return 8; // Magic number. At some point this method will expand to work for more presses
    }
}

// Initialize tap structure associated with example tap dance key
static tap ql_tap_state = {
    .is_press_action = true,
    .state = 0
};

// Functions that control what our tap dance key does
void ql_finished(qk_tap_dance_state_t *state, void *user_data) {
    ql_tap_state.state = cur_dance(state);
    switch(TAP_DANCE_KEYCODE(state)) {
        case TD(TD_ESC_NUM): // ESC key action
            switch (ql_tap_state.state) {
                case SINGLE_TAP:
                case DOUBLE_TAP:
                    // ESC
                    tap_code(KC_ESC);
                    break;
                case TAP_HOLD:
                    // temporal layer change
                    layer_on(_NUM);
                    break;
                case TRIPLE_TAP:
                    // toggle layer
                    // Check to see if the layer is already set
                    if (layer_state_is(_NUM)) {
                        // If already set, then switch it off
                        layer_off(_NUM);
                    } else {
                        // If not already set, then switch the layer on
                        layer_on(_NUM);
                    }
                    break;
            }
            break;
    }
}

void ql_reset(qk_tap_dance_state_t *state, void *user_data) {
    switch(TAP_DANCE_KEYCODE(state)) {
        case TD(TD_ESC_NUM):
            // If the key was held down and now is released then switch off the layer
            if (ql_tap_state.state == TAP_HOLD) {
                layer_off(_NUM);
            }
            ql_tap_state.state = 0;
            break;
    }
}