/* Copyright 2017 Jack Humbert
 *
 * 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/>.
 */

#pragma once

#include "quantum.h"

#if defined(UNICODE_ENABLE) + defined(UNICODEMAP_ENABLE) + defined(UCIS_ENABLE) > 1
  #error "Cannot enable more than one Unicode method (UNICODE, UNICODEMAP, UCIS) at the same time"
#endif

// Keycodes used for starting Unicode input on different platforms
#ifndef UNICODE_KEY_OSX
  #define UNICODE_KEY_OSX  KC_LALT
#endif
#ifndef UNICODE_KEY_LNX
  #define UNICODE_KEY_LNX  LCTL(LSFT(KC_U))
#endif
#ifndef UNICODE_KEY_WINC
  #define UNICODE_KEY_WINC KC_RALT
#endif

// Comma-delimited, ordered list of input modes selected for use (e.g. in cycle)
// Example: #define UNICODE_SELECTED_MODES UC_WINC, UC_LNX
#ifndef UNICODE_SELECTED_MODES
  #define UNICODE_SELECTED_MODES -1
#endif

// Whether input mode changes in cycle should be written to EEPROM
#ifndef UNICODE_CYCLE_PERSIST
  #define UNICODE_CYCLE_PERSIST true
#endif

// Delay between starting Unicode input and sending a sequence, in ms
#ifndef UNICODE_TYPE_DELAY
  #define UNICODE_TYPE_DELAY 10
#endif

enum unicode_input_modes {
  UC_OSX,   // Mac OS X using Unicode Hex Input
  UC_LNX,   // Linux using IBus
  UC_WIN,   // Windows using EnableHexNumpad
  UC_BSD,   // BSD (not implemented)
  UC_WINC,  // Windows using WinCompose (https://github.com/samhocevar/wincompose)
  UC__COUNT // Number of available input modes (always leave at the end)
};

typedef union {
  uint32_t raw;
  struct {
    uint8_t input_mode : 8;
  };
} unicode_config_t;

extern unicode_config_t unicode_config;
extern uint8_t          unicode_saved_mods;

void unicode_input_mode_init(void);
uint8_t get_unicode_input_mode(void);
void set_unicode_input_mode(uint8_t mode);
void cycle_unicode_input_mode(uint8_t offset);
void persist_unicode_input_mode(void);

void unicode_input_start(void);
void unicode_input_finish(void);
void unicode_input_cancel(void);

void register_hex(uint16_t hex);
void send_unicode_hex_string(const char *str);

bool process_unicode_common(uint16_t keycode, keyrecord_t *record);

#define UC_BSPC	UC(0x0008)
#define UC_SPC	UC(0x0020)

#define UC_EXLM	UC(0x0021)
#define UC_DQUT	UC(0x0022)
#define UC_HASH	UC(0x0023)
#define UC_DLR	UC(0x0024)
#define UC_PERC	UC(0x0025)
#define UC_AMPR	UC(0x0026)
#define UC_QUOT	UC(0x0027)
#define UC_LPRN	UC(0x0028)
#define UC_RPRN	UC(0x0029)
#define UC_ASTR	UC(0x002A)
#define UC_PLUS	UC(0x002B)
#define UC_COMM	UC(0x002C)
#define UC_DASH	UC(0x002D)
#define UC_DOT	UC(0x002E)
#define UC_SLSH	UC(0x002F)

#define UC_0	UC(0x0030)
#define UC_1	UC(0x0031)
#define UC_2	UC(0x0032)
#define UC_3	UC(0x0033)
#define UC_4	UC(0x0034)
#define UC_5	UC(0x0035)
#define UC_6	UC(0x0036)
#define UC_7	UC(0x0037)
#define UC_8	UC(0x0038)
#define UC_9	UC(0x0039)

#define UC_COLN UC(0x003A)
#define UC_SCLN UC(0x003B)
#define UC_LT	UC(0x003C)
#define UC_EQL	UC(0x003D)
#define UC_GT	UC(0x003E)
#define UC_QUES	UC(0x003F)
#define UC_AT 	UC(0x0040)

#define UC_A 	UC(0x0041)
#define UC_B 	UC(0x0042)
#define UC_C 	UC(0x0043)
#define UC_D 	UC(0x0044)
#define UC_E 	UC(0x0045)
#define UC_F 	UC(0x0046)
#define UC_G 	UC(0x0047)
#define UC_H 	UC(0x0048)
#define UC_I 	UC(0x0049)
#define UC_J 	UC(0x004A)
#define UC_K 	UC(0x004B)
#define UC_L 	UC(0x004C)
#define UC_M 	UC(0x004D)
#define UC_N 	UC(0x004E)
#define UC_O 	UC(0x004F)
#define UC_P 	UC(0x0050)
#define UC_Q 	UC(0x0051)
#define UC_R 	UC(0x0052)
#define UC_S 	UC(0x0053)
#define UC_T 	UC(0x0054)
#define UC_U 	UC(0x0055)
#define UC_V 	UC(0x0056)
#define UC_W 	UC(0x0057)
#define UC_X 	UC(0x0058)
#define UC_Y 	UC(0x0059)
#define UC_Z 	UC(0x005A)

#define UC_LBRC	UC(0x005B)
#define UC_BSLS	UC(0x005C)
#define UC_RBRC	UC(0x005D)
#define UC_CIRM	UC(0x005E)
#define UC_UNDR	UC(0x005F)

#define UC_GRV 	UC(0x0060)

#define UC_a 	UC(0x0061)
#define UC_b 	UC(0x0062)
#define UC_c 	UC(0x0063)
#define UC_d 	UC(0x0064)
#define UC_e 	UC(0x0065)
#define UC_f 	UC(0x0066)
#define UC_g 	UC(0x0067)
#define UC_h 	UC(0x0068)
#define UC_i 	UC(0x0069)
#define UC_j 	UC(0x006A)
#define UC_k 	UC(0x006B)
#define UC_l 	UC(0x006C)
#define UC_m 	UC(0x006D)
#define UC_n 	UC(0x006E)
#define UC_o 	UC(0x006F)
#define UC_p 	UC(0x0070)
#define UC_q 	UC(0x0071)
#define UC_r 	UC(0x0072)
#define UC_s 	UC(0x0073)
#define UC_t 	UC(0x0074)
#define UC_u 	UC(0x0075)
#define UC_v 	UC(0x0076)
#define UC_w 	UC(0x0077)
#define UC_x 	UC(0x0078)
#define UC_y 	UC(0x0079)
#define UC_z 	UC(0x007A)

#define UC_LCBR	UC(0x007B)
#define UC_PIPE	UC(0x007C)
#define UC_RCBR	UC(0x007D)
#define UC_TILD	UC(0x007E)
#define UC_DEL	UC(0x007F)
