#include <stdarg.h>
#include QMK_KEYBOARD_H
#include "led.h"
#include "action_layer.h"
#include "action_util.h"

/*
 *WINDOWS SWEDISH
 */
 /*
  *WINDOWS SWEDISH
  */
 #define KN_HALF KC_GRV          // 1/2
 #define KN_PLUS KC_MINS         // +
 #define KN_ACUT KC_EQL          // ´
 #define KN_AO	 KC_LBRC         // Å
 #define KN_UMLA KC_RBRC         // ¨
 #define KN_OE	 KC_SCLN         // Ö
 #define KN_AE	 KC_QUOT         // Ä
 #define KN_QUOT KC_NUHS         // '
 #define KN_LABK KC_NUBS         // <
 #define KN_MINS KC_SLSH         // -
 #define KN_EXLM LSFT(KC_1)      // !
 #define KN_DQT  LSFT(KC_2)      // "
 #define KN_AT   RALT(KC_2)      // @
 #define KN_HASH LSFT(KC_3)      // #
 #define KN_EUR  LSFT(KC_4)      // €
 #define KN_DLR  RALT(KC_4)      // $
 #define KN_PERC LSFT(KC_5)      // %
 #define KN_AMPR LSFT(KC_6)      // &
 #define KN_SLSH LSFT(KC_7)      // /
 #define KN_LPRN LSFT(KC_8)      // (
 #define KN_RPRN LSFT(KC_9)      // )
 #define KN_EQL  LSFT(KC_0)      // =
 #define KN_UNDS LSFT(KN_MINS)   // _
 #define KN_QUES LSFT(KN_PLUS)   // ?
 #define KN_GRAV LSFT(KN_ACUT)   // `
 #define KN_LCBR RALT(KC_7)      // {
 #define KN_RCBR RALT(KC_0)      // }
 #define KN_LBRC RALT(KC_8)      // [
 #define KN_RBRC RALT(KC_9)      // ]
 #define KN_RABK LSFT(KN_LABK)   // <
 #define KN_COLN LSFT(KC_DOT)    // :
 #define KN_SCLN LSFT(KC_COMM)   // :
 #define KN_PIPE RALT(KN_LABK)   // |
 #define KN_QUES LSFT(KN_PLUS)   // ?
 #define KN_CIRC LSFT(KN_UMLA)   // ^
 #define KN_ASTR LSFT(KN_QUOT)   // *
 #define KN_TILD RALT(KN_UMLA)   // ~
 #define KN_BSLS RALT(KN_PLUS)   //

#define OSM_LCTL OSM(MOD_LCTL)
#define OSM_LALT OSM(MOD_LALT)
#define OSM_LSFT OSM(MOD_LSFT)

#define KC_HYP LSFT(LALT(LCTL(KC_LGUI)))

#define KC_COPY LCTL(KC_C)
#define KC_PASTE LCTL(KC_V)
#define KC_UNDO LCTL(KC_Z)
#define KC_REDO LCTL(LSFT(KC_Z))

// Layers
enum {
  BASE = 0,
  NAV,
  SYM
};

//Macros
enum {
  KF_1 = 0, // 1, F1
  KF_2, // ...
  KF_3,
  KF_4,
  KF_5,
  KF_6,
  KF_7,
  KF_8,
  KF_9,
  KF_10,
  KF_11,
  KF_12
};

// Tapdance
enum {
  TD_FUN = 0,
  TD_EQ
};

//State and timers
uint16_t kf_timers[12];


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

  [BASE] = LAYOUT(
    M(KF_11), M(KF_1),  M(KF_2),  M(KF_3),  M(KF_4), M(KF_5),                    M(KF_6), M(KF_7), M(KF_8), M(KF_9), M(KF_10), M(KF_12),
    KC_TAB,   KC_Q,     KC_W,     KC_E,     KC_R,    KC_T,                       KC_Y,    KC_U,    KC_I,    KC_O,    KC_P,     KN_AO,
    OSM_LCTL, KC_A,     KC_S,     KC_D,     KC_F,    KC_G,                       KC_H,    KC_J,    KC_K,    KC_L,    KN_OE,    KN_AE,
    OSM_LSFT, KC_Z,     KC_X,     KC_C,     KC_V,    KC_B,                       KC_N,    KC_M,    KC_COMM, KC_DOT,  KN_MINS,  OSM_LSFT,
    MO(NAV),  OSM_LCTL, OSM_LALT, KC_LGUI,  MO(SYM), KC_BSPC,  KC_DELT, KC_ENT,  KC_SPC,  MO(SYM), KC_LEAD, KC_LALT, KC_LCTRL, KC_HYP
  ),

  [NAV] = LAYOUT(
    KC_TRNS,  KC_TRNS,  KC_TRNS,  KC_TRNS,  KC_TRNS,  KC_TRNS,                    KC_TRNS,  KC_TRNS,  KC_TRNS,  KC_TRNS,  KC_TRNS,  KC_TRNS,
    KC_TRNS,  KC_TRNS,  KC_TRNS,  KC_TRNS,  KC_TRNS,  KC_TRNS,                    KC_HOME,  KC_PGDN,  KC_PGUP,  KC_END,   KC_TRNS,  KC_TRNS,
    KC_TRNS,  KC_LSFT,  KC_LCTL,  KC_LALT,  KC_L,     KC_TRNS,                    KC_LEFT,  KC_DOWN,  KC_UP,    KC_RIGHT, KC_TRNS,  KC_TRNS,
    KC_TRNS,  KC_TRNS,  KC_TRNS,  KC_TRNS,  KC_TRNS,  KC_TRNS,                    KC_TRNS,  KC_TRNS,  KC_TRNS,  KC_TRNS,  KC_TRNS,  KC_TRNS,
    KC_TRNS,  KC_TRNS,  KC_TRNS,  KC_TRNS,  KC_TRNS,  KC_TRNS,  KC_TRNS, KC_TRNS, KC_TRNS,  KC_TRNS,  KC_TRNS,  KC_TRNS,  KC_VOLD,  KC_VOLU
  ),

  [SYM] = LAYOUT(
    KC_TRNS,  KC_TRNS,  KC_TRNS,  KC_TRNS,  KC_TRNS,  TD(TD_EQ),                   TD(TD_FUN), KC_TRNS,  KC_TRNS,  KC_TRNS,  KC_TRNS,  KC_TRNS,
    KC_TRNS,  KN_LABK,  KN_RABK,  KN_LCBR,  KN_RCBR,  KN_PLUS,                     KN_AT,      KN_DQT,   KN_QUOT,  KN_GRAV,  KN_SLSH,  KC_TRNS,
    KC_TRNS,  KN_EXLM,  KN_EQL,   KN_LPRN,  KN_RPRN,  KN_MINS,                     KN_UNDS,    KN_CIRC,  KN_DLR,   KN_AMPR,  KN_PIPE,  KC_TRNS,
    KC_TRNS,  KN_EUR,   KN_PERC,  KN_LBRC,  KN_RBRC,  KN_ASTR,                     KN_HASH,    KN_SCLN,  KN_COLN,  KN_QUES,  KN_BSLS,  KC_TRNS,
    KC_TRNS,  KC_TRNS,  KC_TRNS,  KC_TRNS,  KC_TRNS,  KC_TRNS,   KC_TRNS, KC_TRNS, KC_TRNS,    KC_TRNS,  KC_TRNS,  KC_TRNS,  KC_TRNS,  KC_TRNS
  )
};

#define TAP_ONCE(code)  \
  register_code (code); \
  unregister_code (code)

static void m_tapn (uint8_t code, ...) {
  uint8_t kc = code;
  va_list ap;

  va_start(ap, code);
  do {
    register_code(kc);
    unregister_code(kc);
    wait_ms(50);
    kc = va_arg(ap, int);
  } while (kc != 0);
  va_end(ap);
}

static void m_handle_kf (keyrecord_t *record, uint8_t id) {
  uint8_t code = id - KF_1;

  if (record->event.pressed) {
    kf_timers[code] = timer_read ();
  } else {
    uint8_t kc_base;
    uint8_t long_press = (kf_timers[code] && timer_elapsed (kf_timers[code]) > TAPPING_TERM);

    kf_timers[code] = 0;

    switch(id){
      case KF_1 ... KF_10:
        if (long_press) {
          // Long press
          kc_base = KC_F1;
        } else {
          kc_base = KC_1;
        }
        code += kc_base;
        break;
      case KF_11:
        code = long_press ? KC_F11 : KC_ESC;
        break;
      case KF_12:
        code = long_press ? KC_F12 : KN_PLUS;
        break;
    }
    register_code (code);
    unregister_code (code);
  }
}

const macro_t *action_get_macro(keyrecord_t *record, uint8_t id, uint8_t opt)
{
  switch (id) {
    case KF_1 ... KF_12:
      m_handle_kf(record, id);
      break;
  }
  return MACRO_NONE;
};

// Custom keycodes
bool process_record_user(uint16_t keycode, keyrecord_t *record) {
  bool queue = true;

  //Cancle one-shot mods.
  switch (keycode) {
    case KC_ESC:
      if (record->event.pressed && get_oneshot_mods() && !has_oneshot_mods_timed_out()) {
        clear_oneshot_mods();
        queue = false;
      }
      break;
  }
  return queue;
}

// TAP DANCE SETTINGS
void dance_eq (qk_tap_dance_state_t *state, void *user_data) {
  switch (state->count) {
    case 1: // ===
      register_code(KC_LSHIFT);
      m_tapn(KC_0, KC_0, KC_0, 0);
      unregister_code(KC_LSHIFT);
      break;
    case 2:
      register_code(KC_LSHIFT);
      m_tapn(KC_1, KC_0, KC_0, 0);
      unregister_code(KC_LSHIFT);
      break;
    default:
      reset_tap_dance(state);
  }
}

void dance_fun (qk_tap_dance_state_t *state, void *user_data) {
  switch (state->count) {
    case 1: // =>
      register_code(KC_LSHIFT);
      m_tapn(KC_0, KN_LABK, 0);
      unregister_code(KC_LSHIFT);
      break;
    case 2: // () => {}
      register_code(KC_LSHIFT);
      m_tapn(KC_8, KC_9, KC_SPC, KC_0, KN_LABK, KC_SPC, 0);
      unregister_code(KC_LSHIFT);
      register_code(KC_RALT);
      m_tapn(KC_7, 0);
      unregister_code(KC_RALT);
      TAP_ONCE(KC_ENT);
      break;
    default:
      reset_tap_dance(state);
  }
}

qk_tap_dance_action_t tap_dance_actions[] = {
  [TD_FUN] = ACTION_TAP_DANCE_FN (dance_fun),
  [TD_EQ] = ACTION_TAP_DANCE_FN (dance_eq)
};

// Runs just one time when the keyboard initializes.
void matrix_init_user(void) {
  set_unicode_input_mode(UC_WINC);
};

LEADER_EXTERNS();
// Runs constantly in the background, in a loop.
void matrix_scan_user(void) {
  LEADER_DICTIONARY() {
    leading = false;
    leader_end();
    SEQ_ONE_KEY(KC_L){
      register_code(KC_RGUI);
      TAP_ONCE(KC_L);
      unregister_code(KC_RGUI);
    };


    SEQ_TWO_KEYS (KC_A, KC_W) {
      //Web - chrome
      register_code (KC_LGUI); TAP_ONCE (KC_1); unregister_code (KC_LGUI);
    }
    SEQ_TWO_KEYS (KC_A, KC_P) {
      //sPotify
      register_code (KC_LGUI); TAP_ONCE (KC_2); unregister_code (KC_LGUI);

    }
    SEQ_TWO_KEYS (KC_A, KC_T) {
      //Total Commander
      register_code (KC_LGUI); TAP_ONCE (KC_3); unregister_code (KC_LGUI);

    }
    SEQ_TWO_KEYS (KC_A, KC_A) {
      //Atom
      register_code (KC_LGUI); TAP_ONCE (KC_4); unregister_code (KC_LGUI);

    }
    SEQ_TWO_KEYS (KC_A, KC_E) {
      //Emacs
      register_code (KC_LGUI); TAP_ONCE (KC_5); unregister_code (KC_LGUI);

    }
    SEQ_TWO_KEYS (KC_A, KC_C) {
      //Cmdr
      register_code (KC_LGUI); TAP_ONCE (KC_6); unregister_code (KC_LGUI);

    }
    SEQ_TWO_KEYS (KC_A, KC_S) {
      //Slack
      register_code (KC_LGUI); TAP_ONCE (KC_7); unregister_code (KC_LGUI);
    }

    SEQ_TWO_KEYS (KC_U, KC_L) {
      set_unicode_input_mode(UC_LNX);
    }


    SEQ_TWO_KEYS (KC_U, KC_W) {
      set_unicode_input_mode(UC_WINC);
    }


    SEQ_TWO_KEYS (KC_S, KC_S) {
      // ¯\_(ツ)_/¯
      unicode_input_start(); register_hex(0xaf); unicode_input_finish();
      register_code (KC_LALT);
      register_code (KC_LCTL);
      TAP_ONCE (KN_PLUS);
      unregister_code (KC_LCTL);
      unregister_code (KC_LALT);

      register_code (KC_RSFT); TAP_ONCE (KC_8); unregister_code (KC_RSFT);
      unicode_input_start (); register_hex(0x30c4); unicode_input_finish();
      register_code (KC_RSFT); TAP_ONCE (KC_9); TAP_ONCE(KC_7); unregister_code (KC_RSFT);
      unicode_input_start (); register_hex(0xaf); unicode_input_finish();
    }

    SEQ_TWO_KEYS (KC_S, KC_F) {
      // 凸(ツ)凸
      unicode_input_start(); register_hex(0x51F8); unicode_input_finish();
      register_code (KC_RSFT); TAP_ONCE (KC_8); unregister_code (KC_RSFT);
      unicode_input_start (); register_hex(0x30c4); unicode_input_finish();
      register_code (KC_RSFT); TAP_ONCE (KC_9); unregister_code (KC_RSFT);
      unicode_input_start (); register_hex(0x51F8); unicode_input_finish();
    }

    SEQ_TWO_KEYS (KC_S, KC_L) {
      // λ
      unicode_input_start();
      register_hex(0x03bb);
      unicode_input_finish();
    }
  };
};