/*  RetroArch - A frontend for libretro.
 *  Copyright (C) 2010-2014 - Hans-Kristian Arntzen
 *  Copyright (C) 2011-2015 - Daniel De Matteis
 * 
 *  RetroArch 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 Found-
 *  ation, either version 3 of the License, or (at your option) any later version.
 *
 *  RetroArch 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 RetroArch.
 *  If not, see <http://www.gnu.org/licenses/>.
 */

#include "../input_autodetect.h"

static uint64_t pad_state[MAX_PADS];
static int16_t analog_state[MAX_PADS][2][2];
static unsigned pads_connected;
#if 0
sensor_t accelerometer_state[MAX_PADS];
#endif

static inline int16_t convert_u8_to_s16(uint8_t val)
{
   if (val == 0)
      return -0x7fff;
   return val * 0x0101 - 0x8000;
}

static const char *ps3_joypad_name(unsigned pad)
{
   return g_settings.input.device_names[pad];
}

static bool ps3_joypad_init(void)
{
   unsigned autoconf_pad;

   cellPadInit(MAX_PADS);

   for (autoconf_pad = 0; autoconf_pad < MAX_USERS; autoconf_pad++)
   {
      strlcpy(g_settings.input.device_names[autoconf_pad],
            "SixAxis Controller",
            sizeof(g_settings.input.device_names[autoconf_pad]));
      /* TODO - implement VID/PID? */
      input_config_autoconfigure_joypad(autoconf_pad,
            ps3_joypad_name(autoconf_pad),
            0, 0,
            ps3_joypad.ident);
   }

   return true;
}

static bool ps3_joypad_button(unsigned port_num, uint16_t joykey)
{
   if (port_num >= MAX_PADS)
      return false;

   return pad_state[port_num] & (1ULL << joykey);
}

static int16_t ps3_joypad_axis(unsigned port_num, uint32_t joyaxis)
{
   int val = 0, axis = -1;
   bool is_neg = false, is_pos = false;

   if (joyaxis == AXIS_NONE || port_num >= MAX_PADS)
      return 0;

   if (AXIS_NEG_GET(joyaxis) < 4)
   {
      axis = AXIS_NEG_GET(joyaxis);
      is_neg = true;
   }
   else if (AXIS_POS_GET(joyaxis) < 4)
   {
      axis = AXIS_POS_GET(joyaxis);
      is_pos = true;
   }

   switch (axis)
   {
      case 0:
         val = analog_state[port_num][0][0];
         break;
      case 1:
         val = analog_state[port_num][0][1];
         break;
      case 2:
         val = analog_state[port_num][1][0];
         break;
      case 3:
         val = analog_state[port_num][1][1];
         break;
   }

   if (is_neg && val > 0)
      val = 0;
   else if (is_pos && val < 0)
      val = 0;

   return val;
}

static void ps3_joypad_poll(void)
{
   unsigned port;
   CellPadInfo2 pad_info;
   uint64_t *lifecycle_state = (uint64_t*)&g_extern.lifecycle_state;

   for (port = 0; port < MAX_PADS; port++)
   {
      CellPadData state_tmp;
      cellPadGetData(port, &state_tmp);

      if (state_tmp.len != 0)
      {
         uint64_t *state_cur = &pad_state[port];
         *state_cur = 0;
#ifdef __PSL1GHT__
         *state_cur |= (state_tmp.BTN_LEFT)     ? (1ULL << RETRO_DEVICE_ID_JOYPAD_LEFT) : 0;
         *state_cur |= (state_tmp.BTN_DOWN)     ? (1ULL << RETRO_DEVICE_ID_JOYPAD_DOWN) : 0;
         *state_cur |= (state_tmp.BTN_RIGHT)    ? (1ULL << RETRO_DEVICE_ID_JOYPAD_RIGHT) : 0;
         *state_cur |= (state_tmp.BTN_UP)       ? (1ULL << RETRO_DEVICE_ID_JOYPAD_UP) : 0;
         *state_cur |= (state_tmp.BTN_START)    ? (1ULL << RETRO_DEVICE_ID_JOYPAD_START) : 0;
         *state_cur |= (state_tmp.BTN_R3)       ? (1ULL << RETRO_DEVICE_ID_JOYPAD_R3) : 0;
         *state_cur |= (state_tmp.BTN_L3)       ? (1ULL << RETRO_DEVICE_ID_JOYPAD_L3) : 0;
         *state_cur |= (state_tmp.BTN_SELECT)   ? (1ULL << RETRO_DEVICE_ID_JOYPAD_SELECT) : 0;
         *state_cur |= (state_tmp.BTN_TRIANGLE) ? (1ULL << RETRO_DEVICE_ID_JOYPAD_X) : 0;
         *state_cur |= (state_tmp.BTN_SQUARE)   ? (1ULL << RETRO_DEVICE_ID_JOYPAD_Y) : 0;
         *state_cur |= (state_tmp.BTN_CROSS)    ? (1ULL << RETRO_DEVICE_ID_JOYPAD_B) : 0;
         *state_cur |= (state_tmp.BTN_CIRCLE)   ? (1ULL << RETRO_DEVICE_ID_JOYPAD_A) : 0;
         *state_cur |= (state_tmp.BTN_R1)       ? (1ULL << RETRO_DEVICE_ID_JOYPAD_R) : 0;
         *state_cur |= (state_tmp.BTN_L1)       ? (1ULL << RETRO_DEVICE_ID_JOYPAD_L) : 0;
         *state_cur |= (state_tmp.BTN_R2)       ? (1ULL << RETRO_DEVICE_ID_JOYPAD_R2) : 0;
         *state_cur |= (state_tmp.BTN_L2)       ? (1ULL << RETRO_DEVICE_ID_JOYPAD_L2) : 0;
#else
         *state_cur |= (state_tmp.button[CELL_PAD_BTN_OFFSET_DIGITAL1] & CELL_PAD_CTRL_LEFT) ? (1ULL << RETRO_DEVICE_ID_JOYPAD_LEFT) : 0;
         *state_cur |= (state_tmp.button[CELL_PAD_BTN_OFFSET_DIGITAL1] & CELL_PAD_CTRL_DOWN) ? (1ULL << RETRO_DEVICE_ID_JOYPAD_DOWN) : 0;
         *state_cur |= (state_tmp.button[CELL_PAD_BTN_OFFSET_DIGITAL1] & CELL_PAD_CTRL_RIGHT) ? (1ULL << RETRO_DEVICE_ID_JOYPAD_RIGHT) : 0;
         *state_cur |= (state_tmp.button[CELL_PAD_BTN_OFFSET_DIGITAL1] & CELL_PAD_CTRL_UP) ? (1ULL << RETRO_DEVICE_ID_JOYPAD_UP) : 0;
         *state_cur |= (state_tmp.button[CELL_PAD_BTN_OFFSET_DIGITAL1] & CELL_PAD_CTRL_START) ? (1ULL << RETRO_DEVICE_ID_JOYPAD_START) : 0;
         *state_cur |= (state_tmp.button[CELL_PAD_BTN_OFFSET_DIGITAL1] & CELL_PAD_CTRL_R3) ? (1ULL << RETRO_DEVICE_ID_JOYPAD_R3) : 0;
         *state_cur |= (state_tmp.button[CELL_PAD_BTN_OFFSET_DIGITAL1] & CELL_PAD_CTRL_L3) ? (1ULL << RETRO_DEVICE_ID_JOYPAD_L3) : 0;
         *state_cur |= (state_tmp.button[CELL_PAD_BTN_OFFSET_DIGITAL1] & CELL_PAD_CTRL_SELECT) ? (1ULL << RETRO_DEVICE_ID_JOYPAD_SELECT) : 0;
         *state_cur |= (state_tmp.button[CELL_PAD_BTN_OFFSET_DIGITAL2] & CELL_PAD_CTRL_TRIANGLE) ? (1ULL << RETRO_DEVICE_ID_JOYPAD_X) : 0;
         *state_cur |= (state_tmp.button[CELL_PAD_BTN_OFFSET_DIGITAL2] & CELL_PAD_CTRL_SQUARE) ? (1ULL << RETRO_DEVICE_ID_JOYPAD_Y) : 0;

         if (g_extern.is_menu)
         {
            int value = 0;
            if (cellSysutilGetSystemParamInt(CELL_SYSUTIL_SYSTEMPARAM_ID_ENTER_BUTTON_ASSIGN, &value) == 0)
            {
               if (state_tmp.button[CELL_PAD_BTN_OFFSET_DIGITAL2] & CELL_PAD_CTRL_CROSS)
                  *state_cur |=  (value == CELL_SYSUTIL_ENTER_BUTTON_ASSIGN_CROSS) ? (1ULL << RETRO_DEVICE_ID_JOYPAD_A) : (1ULL << RETRO_DEVICE_ID_JOYPAD_B);
               if (state_tmp.button[CELL_PAD_BTN_OFFSET_DIGITAL2] & CELL_PAD_CTRL_CIRCLE)
                  *state_cur |=  (value == CELL_SYSUTIL_ENTER_BUTTON_ASSIGN_CIRCLE) ? (1ULL << RETRO_DEVICE_ID_JOYPAD_A) : (1ULL << RETRO_DEVICE_ID_JOYPAD_B);
            }
         }
         else
         {
            *state_cur |= (state_tmp.button[CELL_PAD_BTN_OFFSET_DIGITAL2] & CELL_PAD_CTRL_CROSS) ? (1ULL << RETRO_DEVICE_ID_JOYPAD_B) : 0;
            *state_cur |= (state_tmp.button[CELL_PAD_BTN_OFFSET_DIGITAL2] & CELL_PAD_CTRL_CIRCLE) ? (1ULL << RETRO_DEVICE_ID_JOYPAD_A) : 0;
         }
         *state_cur |= (state_tmp.button[CELL_PAD_BTN_OFFSET_DIGITAL2] & CELL_PAD_CTRL_R1) ? (1ULL << RETRO_DEVICE_ID_JOYPAD_R) : 0;
         *state_cur |= (state_tmp.button[CELL_PAD_BTN_OFFSET_DIGITAL2] & CELL_PAD_CTRL_L1) ? (1ULL << RETRO_DEVICE_ID_JOYPAD_L) : 0;
         *state_cur |= (state_tmp.button[CELL_PAD_BTN_OFFSET_DIGITAL2] & CELL_PAD_CTRL_R2) ? (1ULL << RETRO_DEVICE_ID_JOYPAD_R2) : 0;
         *state_cur |= (state_tmp.button[CELL_PAD_BTN_OFFSET_DIGITAL2] & CELL_PAD_CTRL_L2) ? (1ULL << RETRO_DEVICE_ID_JOYPAD_L2) : 0;
         *state_cur |= (state_tmp.button[CELL_PAD_BTN_OFFSET_DIGITAL2] & CELL_PAD_CTRL_L2) ? (1ULL << RETRO_DEVICE_ID_JOYPAD_L2) : 0;
         //RARCH_LOG("lsx : %d (%hd) lsy : %d (%hd) rsx : %d (%hd) rsy : %d (%hd)\n", lsx, ls_x, lsy, ls_y, rsx, rs_x, rsy, rs_y);
         uint8_t lsx = (uint8_t)(state_tmp.button[CELL_PAD_BTN_OFFSET_ANALOG_LEFT_X]);
         uint8_t lsy = (uint8_t)(state_tmp.button[CELL_PAD_BTN_OFFSET_ANALOG_LEFT_Y]);
         uint8_t rsx = (uint8_t)(state_tmp.button[CELL_PAD_BTN_OFFSET_ANALOG_RIGHT_X]);
         uint8_t rsy = (uint8_t)(state_tmp.button[CELL_PAD_BTN_OFFSET_ANALOG_RIGHT_Y]);
         analog_state[port][RETRO_DEVICE_INDEX_ANALOG_LEFT ][RETRO_DEVICE_ID_ANALOG_X] = convert_u8_to_s16(lsx);
         analog_state[port][RETRO_DEVICE_INDEX_ANALOG_LEFT ][RETRO_DEVICE_ID_ANALOG_Y] = convert_u8_to_s16(lsy);
         analog_state[port][RETRO_DEVICE_INDEX_ANALOG_RIGHT][RETRO_DEVICE_ID_ANALOG_X] = convert_u8_to_s16(rsx);
         analog_state[port][RETRO_DEVICE_INDEX_ANALOG_RIGHT][RETRO_DEVICE_ID_ANALOG_Y] = convert_u8_to_s16(rsy);

#if 0
         accelerometer_state[port].x = state_tmp.button[CELL_PAD_BTN_OFFSET_SENSOR_X];
         accelerometer_state[port].y = state_tmp.button[CELL_PAD_BTN_OFFSET_SENSOR_Y];
         accelerometer_state[port].z = state_tmp.button[CELL_PAD_BTN_OFFSET_SENSOR_Z];
#endif
#endif
      }

      for (int i = 0; i < 2; i++)
         for (int j = 0; j < 2; j++)
            if (analog_state[port][i][j] == -0x8000)
               analog_state[port][i][j] = -0x7fff;
   }

   uint64_t *state_p1 = &pad_state[0];

   *lifecycle_state &= ~((1ULL << RARCH_MENU_TOGGLE));

   if ((*state_p1 & (1ULL << RETRO_DEVICE_ID_JOYPAD_L3)) && (*state_p1 & (1ULL << RETRO_DEVICE_ID_JOYPAD_R3)))
      *lifecycle_state |= (1ULL << RARCH_MENU_TOGGLE);

   cellPadGetInfo2(&pad_info);
   pads_connected = pad_info.now_connect; 
}

static bool ps3_joypad_query_pad(unsigned pad)
{
   return pad < MAX_USERS && pad_state[pad];
}

static bool ps3_joypad_rumble(unsigned pad,
      enum retro_rumble_effect effect, uint16_t strength)
{
   CellPadActParam params;

   switch (effect)
   {
      case RETRO_RUMBLE_WEAK:
         if (strength > 1)
            strength = 1;
         params.motor[0] = strength;
         break;
      case RETRO_RUMBLE_STRONG:
         if (strength > 255)
            strength = 255;
         params.motor[1] = strength;
         break;
   }

   cellPadSetActDirect(pad, &params);

   return true;
}

static void ps3_joypad_destroy(void)
{
   cellPadEnd();
}


rarch_joypad_driver_t ps3_joypad = {
   ps3_joypad_init,
   ps3_joypad_query_pad,
   ps3_joypad_destroy,
   ps3_joypad_button,
   ps3_joypad_axis,
   ps3_joypad_poll,
   ps3_joypad_rumble,
   ps3_joypad_name,
   "ps3",
};
