/**
 ****************************************************************************************
 * @addtogroup LANSTASK
 * @{
 ****************************************************************************************
 */

/*
 * INCLUDE FILES
 ****************************************************************************************
 */

#include "rwip_config.h"

#if (BLE_LN_SENSOR)
#include "lan_common.h"

#include "attm.h"
#include "gapc.h"
#include "gattc.h"
#include "gattc_task.h"
#include "lans.h"
#include "lans_task.h"
#include "prf_utils.h"

#include "co_math.h"
#include "co_utils.h"
#include "ke_mem.h"

/*
 * LOCAL FUNCTIONS DEFINITIONS
 ****************************************************************************************
 */

/**
 ****************************************************************************************
 * @brief Handles reception of the @ref LANS_ENABLE_REQ message.
 * @param[in] msgid Id of the message received
 * @param[in] param Pointer to the parameters of the message.
 * @param[in] dest_id ID of the receiving task instance
 * @param[in] src_id ID of the sending task instance.
 * @return If the message was consumed or not.
 ****************************************************************************************
 */

__STATIC int lans_enable_req_handler(ke_msg_id_t const msgid,
                                     struct lans_enable_req *param,
                                     ke_task_id_t const dest_id,
                                     ke_task_id_t const src_id) {
  // Get the address of the environment
  struct lans_env_tag *lans_env = PRF_ENV_GET(LANS, lans);
  // Status
  uint8_t status = PRF_ERR_REQ_DISALLOWED;

  if (ke_state_get(dest_id) == LANS_IDLE) {
    // Bonded data was not used before
    if (!LANS_IS_PRESENT(lans_env->env[param->conidx].prfl_ntf_ind_cfg,
                         LANS_PRF_CFG_PERFORMED_OK)) {
      status = GAP_ERR_NO_ERROR;
      lans_env->env[param->conidx].prfl_ntf_ind_cfg = param->prfl_ntf_ind_cfg;
    }
    // Enable Bonded Data
    LANS_ENABLE_NTF_IND(param->conidx, LANS_PRF_CFG_PERFORMED_OK);
  }

  // send completed information to APP task that contains error status
  struct lans_enable_rsp *cmp_evt =
      KE_MSG_ALLOC(LANS_ENABLE_RSP, src_id, dest_id, lans_enable_rsp);
  cmp_evt->status = status;
  cmp_evt->conidx = param->conidx;
  ke_msg_send(cmp_evt);

  return (KE_MSG_CONSUMED);
}

/**
 ****************************************************************************************
 * @brief Handles reception of the read request from peer device
 *
 * @param[in] msgid Id of the message received (probably unused).
 * @param[in] param Pointer to the parameters of the message.
 * @param[in] dest_id ID of the receiving task instance (probably unused).
 * @param[in] src_id ID of the sending task instance.
 * @return If the message was consumed or not.
 ****************************************************************************************
 */
__STATIC int gattc_read_req_ind_handler(ke_msg_id_t const msgid,
                                        struct gattc_read_req_ind const *param,
                                        ke_task_id_t const dest_id,
                                        ke_task_id_t const src_id) {
  if (ke_state_get(dest_id) == LANS_IDLE) {
    // Pointer to the response message
    struct gattc_read_cfm *cfm = NULL;

    // Get the address of the environment
    struct lans_env_tag *lans_env = PRF_ENV_GET(LANS, lans);
    uint8_t conidx = KE_IDX_GET(src_id);
    uint8_t att_idx = LANS_IDX(param->handle);

    uint8_t status = ATT_ERR_NO_ERROR;

    switch (att_idx) {
    case LNS_IDX_LN_FEAT_VAL: {
      // Allocate structure
      cfm = KE_MSG_ALLOC_DYN(GATTC_READ_CFM, src_id, dest_id, gattc_read_cfm,
                             sizeof(uint32_t));
      cfm->length = sizeof(uint32_t);
      // Fill data
      co_write32p(cfm->value, lans_env->features);
    } break;

    case LNS_IDX_POS_Q_VAL: {
      // Check if Position Quality Char. has been added in the database
      if (LANS_IS_FEATURE_SUPPORTED(lans_env->prfl_cfg, LANS_POS_Q_MASK)) {
        // Allocate structure
        cfm = KE_MSG_ALLOC_DYN(GATTC_READ_CFM, src_id, dest_id, gattc_read_cfm,
                               sizeof(struct lanp_posq));
        // Fill data
        cfm->length = lans_pack_posq(cfm->value);
      } else {
        status = PRF_ERR_FEATURE_NOT_SUPPORTED;
      }

    } break;

    case LNS_IDX_LOC_SPEED_NTF_CFG: {
      // allocate structure
      cfm = KE_MSG_ALLOC_DYN(GATTC_READ_CFM, src_id, dest_id, gattc_read_cfm,
                             sizeof(uint16_t));
      cfm->length = sizeof(uint16_t);
      // Fill data
      co_write16p(cfm->value, (lans_env->env[conidx].prfl_ntf_ind_cfg &
                               LANS_PRF_CFG_FLAG_LOC_SPEED_NTF)
                                  ? PRF_CLI_START_NTF
                                  : PRF_CLI_STOP_NTFIND);
    } break;

    case LNS_IDX_NAVIGATION_NTF_CFG: {
      // Check if Navigation Char. has been added in the database
      if (LANS_IS_FEATURE_SUPPORTED(lans_env->prfl_cfg, LANS_NAVI_MASK)) {
        // allocate structure
        cfm = KE_MSG_ALLOC_DYN(GATTC_READ_CFM, src_id, dest_id, gattc_read_cfm,
                               sizeof(uint16_t));
        cfm->length = sizeof(uint16_t);
        co_write16p(cfm->value, (lans_env->env[conidx].prfl_ntf_ind_cfg &
                                 LANS_PRF_CFG_FLAG_NAVIGATION_NTF)
                                    ? PRF_CLI_START_NTF
                                    : PRF_CLI_STOP_NTFIND);
      } else {
        status = PRF_ERR_FEATURE_NOT_SUPPORTED;
      }
    } break;

    case LNS_IDX_LN_CTNL_PT_IND_CFG: {
      // Check if LN control point has been added in the database
      if (LANS_IS_FEATURE_SUPPORTED(lans_env->prfl_cfg, LANS_LN_CTNL_PT_MASK)) {
        // allocate structure
        cfm = KE_MSG_ALLOC_DYN(GATTC_READ_CFM, src_id, dest_id, gattc_read_cfm,
                               sizeof(uint16_t));
        cfm->length = sizeof(uint16_t);
        // Fill data
        co_write16p(cfm->value, (lans_env->env[conidx].prfl_ntf_ind_cfg &
                                 LANS_PRF_CFG_FLAG_LN_CTNL_PT_IND)
                                    ? PRF_CLI_START_IND
                                    : PRF_CLI_STOP_NTFIND);
      } else {
        status = PRF_ERR_FEATURE_NOT_SUPPORTED;
      }
    } break;

    default: {
      status = ATT_ERR_REQUEST_NOT_SUPPORTED;
    } break;
    }

    if (status != ATT_ERR_NO_ERROR) {
      cfm = KE_MSG_ALLOC(GATTC_READ_CFM, src_id, dest_id, gattc_read_cfm);
      cfm->length = 0;
    }

    cfm->handle = param->handle;
    cfm->status = status;

    // Send value to peer device.
    ke_msg_send(cfm);
  }

  return (KE_MSG_CONSUMED);
}

/**
 ****************************************************************************************
 * @brief Handles reception of the attribute info request message.
 *
 * @param[in] msgid Id of the message received (probably unused).
 * @param[in] param Pointer to the parameters of the message.
 * @param[in] dest_id ID of the receiving task instance (probably unused).
 * @param[in] src_id ID of the sending task instance.
 * @return If the message was consumed or not.
 ****************************************************************************************
 */
__STATIC int gattc_att_info_req_ind_handler(
    ke_msg_id_t const msgid, struct gattc_att_info_req_ind *param,
    ke_task_id_t const dest_id, ke_task_id_t const src_id) {
  if (ke_state_get(dest_id) == LANS_IDLE) {
    // Get the address of the environment
    struct lans_env_tag *lans_env = PRF_ENV_GET(LANS, lans);
    uint8_t att_idx = LANS_IDX(param->handle);
    struct gattc_att_info_cfm *cfm;

    // Send write response
    cfm = KE_MSG_ALLOC(GATTC_ATT_INFO_CFM, src_id, dest_id, gattc_att_info_cfm);
    cfm->handle = param->handle;

    // check if it's a client configuration char
    if ((att_idx == LNS_IDX_LOC_SPEED_NTF_CFG) ||
        (att_idx == LNS_IDX_NAVIGATION_NTF_CFG) ||
        (att_idx == LNS_IDX_LN_CTNL_PT_IND_CFG)) {
      // CCC attribute length = 2
      cfm->length = 2;
      cfm->status = GAP_ERR_NO_ERROR;
    } else if (att_idx == LNS_IDX_LN_CTNL_PT_VAL) {
      // force length to zero to reject any write starting from something != 0
      cfm->length = 0;
      cfm->status = GAP_ERR_NO_ERROR;
    }
    // not expected request
    else {
      cfm->length = 0;
      cfm->status = ATT_ERR_WRITE_NOT_PERMITTED;
    }
    ke_msg_send(cfm);
  }

  return (KE_MSG_CONSUMED);
}

/**
 ****************************************************************************************
 * @brief Handles reception of the @ref LANS_NTF_LN_MEAS_CMD message.
 * @param[in] msgid Id of the message received.
 * @param[in] param Pointer to the parameters of the message.
 * @param[in] dest_id ID of the receiving task instance.
 * @param[in] src_id ID of the sending task instance.
 * @return If the message was consumed or not.
 ****************************************************************************************
 */
__STATIC int lans_ntf_loc_speed_req_handler(
    ke_msg_id_t const msgid, struct lans_ntf_loc_speed_req *param,
    ke_task_id_t const dest_id, ke_task_id_t const src_id) {
  // Message status
  uint8_t msg_status = KE_MSG_NO_FREE;

  // State shall be Connected or Busy
  if (ke_state_get(dest_id) == LANS_IDLE) {
    // Get the address of the environment
    struct lans_env_tag *lans_env = PRF_ENV_GET(LANS, lans);

    // Configure the environment
    lans_env->operation = LANS_NTF_LOC_SPEED_OP_CODE;
    // allocate operation data
    lans_env->op_data =
        (struct lans_op *)ke_malloc(sizeof(struct lans_op), KE_MEM_KE_MSG);
    lans_env->op_data->cmd = ke_param2msg(param);
    lans_env->op_data->cursor = 0;
    lans_env->op_data->ntf_pending = NULL;

    // Go to busy state
    ke_state_set(dest_id, LANS_BUSY);

    // start operation execution
    lans_exe_operation();
  } else {
    // Save it for later
    msg_status = KE_MSG_SAVED;
  }

  return (int)msg_status;
}

/**
 ****************************************************************************************
 * @brief Handles reception of the @ref LANS_UPD_POS_Q_REQ message.
 * @param[in] msgid Id of the message received.
 * @param[in] param Pointer to the parameters of the message.
 * @param[in] dest_id ID of the receiving task instance.
 * @param[in] src_id ID of the sending task instance.
 * @return If the message was consumed or not.
 ****************************************************************************************
 */
__STATIC int lans_upd_pos_q_req_handler(ke_msg_id_t const msgid,
                                        struct lans_upd_pos_q_req *param,
                                        ke_task_id_t const dest_id,
                                        ke_task_id_t const src_id) {
  // Get the address of the environment
  struct lans_env_tag *lans_env = PRF_ENV_GET(LANS, lans);
  // Allocate response message
  struct lans_upd_pos_q_rsp *rsp =
      KE_MSG_ALLOC(LANS_UPD_POS_Q_RSP, src_id, dest_id, lans_upd_pos_q_rsp);
  rsp->status = PRF_ERR_FEATURE_NOT_SUPPORTED;

  // Check if Position Quality Char. has been added in the database
  if (LANS_IS_FEATURE_SUPPORTED(lans_env->prfl_cfg, LANS_POS_Q_MASK)) {
    if (lans_env->posq != NULL) {
      // Update position quality
      lans_upd_posq(param->parameters);
      // Set status value
      rsp->status = GAP_ERR_NO_ERROR;
    } else {
      // Set status value
      rsp->status = PRF_APP_ERROR;
    }
  }

  // Send response to the application
  ke_msg_send(rsp);

  return (KE_MSG_CONSUMED);
}

/**
 ****************************************************************************************
 * @brief Handles reception of the @ref LANS_NTF_NAVIGATION_REQ message.
 * @param[in] msgid Id of the message received.
 * @param[in] param Pointer to the parameters of the message.
 * @param[in] dest_id ID of the receiving task instance.
 * @param[in] src_id ID of the sending task instance.
 * @return If the message was consumed or not.
 ****************************************************************************************
 */
__STATIC int lans_ntf_navigation_req_handler(
    ke_msg_id_t const msgid, struct lans_ntf_navigation_req *param,
    ke_task_id_t const dest_id, ke_task_id_t const src_id) {
  // Message status
  uint8_t msg_status = KE_MSG_NO_FREE;

  // State shall be Connected or Busy
  if (ke_state_get(dest_id) == LANS_IDLE) {
    // Get the address of the environment
    struct lans_env_tag *lans_env = PRF_ENV_GET(LANS, lans);

    // Configure the environment
    lans_env->operation = LANS_NTF_NAVIGATION_OP_CODE;
    // allocate operation data
    lans_env->op_data =
        (struct lans_op *)ke_malloc(sizeof(struct lans_op), KE_MEM_KE_MSG);
    lans_env->op_data->cmd = ke_param2msg(param);
    lans_env->op_data->cursor = 0;
    lans_env->op_data->ntf_pending = NULL;

    // Go to busy state
    ke_state_set(dest_id, LANS_BUSY);

    // start operation execution
    lans_exe_operation();
  } else {
    // Save it for later
    msg_status = KE_MSG_SAVED;
  }

  return (int)msg_status;
}

/**
 ****************************************************************************************
 * @brief Handles reception of the @ref LANS_LN_CTNL_PT_CFM message.
 * @param[in] msgid Id of the message received.
 * @param[in] param Pointer to the parameters of the message.
 * @param[in] dest_id ID of the receiving task instance.
 * @param[in] src_id ID of the sending task instance.
 * @return If the message was consumed or not.
 ****************************************************************************************
 */
__STATIC int lans_ln_ctnl_pt_cfm_handler(ke_msg_id_t const msgid,
                                         struct lans_ln_ctnl_pt_cfm *param,
                                         ke_task_id_t const dest_id,
                                         ke_task_id_t const src_id) {
  // Get the address of the environment
  struct lans_env_tag *lans_env = PRF_ENV_GET(LANS, lans);
  uint8_t status = GAP_ERR_NO_ERROR;

  if (ke_state_get(dest_id) == LANS_BUSY) {
    do {
      // Check the current operation
      if (lans_env->operation < LANS_SET_CUMUL_VALUE_OP_CODE) {
        // The confirmation has been sent without request indication, ignore
        break;
      }

      // The LN Control Point Characteristic must be supported if we are here
      if (!LANS_IS_FEATURE_SUPPORTED(lans_env->prfl_cfg,
                                     LANS_LN_CTNL_PT_MASK)) {
        status = PRF_ERR_REQ_DISALLOWED;
        break;
      }

      // Check if sending of indications has been enabled
      if (!LANS_IS_NTF_IND_ENABLED(param->conidx,
                                   LANS_PRF_CFG_FLAG_LN_CTNL_PT_IND)) {
        // CCC improperly configured
        status = PRF_CCCD_IMPR_CONFIGURED;
        break;
      }

      // Allocate the GATT notification message
      struct gattc_send_evt_cmd *ctl_pt_rsp = KE_MSG_ALLOC_DYN(
          GATTC_SEND_EVT_CMD, KE_BUILD_ID(TASK_GATTC, param->conidx), dest_id,
          gattc_send_evt_cmd, LANP_LAN_LN_CNTL_PT_RSP_MAX_LEN);

      // Fill in the parameter structure
      ctl_pt_rsp->operation = GATTC_INDICATE;
      ctl_pt_rsp->handle = LANS_HANDLE(LNS_IDX_LN_CTNL_PT_VAL);
      // Pack Control Point confirmation
      ctl_pt_rsp->length =
          lans_pack_ln_ctnl_point_cfm(param->conidx, param, ctl_pt_rsp->value);

      // Send the event
      ke_msg_send(ctl_pt_rsp);

    } while (0);

    if (status != GAP_ERR_NO_ERROR) {
      // Inform the application that a procedure has been completed
      lans_send_cmp_evt(param->conidx,
                        prf_src_task_get(&lans_env->prf_env, param->conidx),
                        prf_dst_task_get(&lans_env->prf_env, param->conidx),
                        lans_env->operation, status);
    }
  }

  return (KE_MSG_CONSUMED);
}

/**
 ****************************************************************************************
 * @brief Handles reception of the @ref GATTC_WRITE_REQ_IND message.
 * @param[in] msgid Id of the message received.
 * @param[in] param Pointer to the parameters of the message.
 * @param[in] dest_id ID of the receiving task instance.
 * @param[in] src_id ID of the sending task instance.
 * @return If the message was consumed or not.
 ****************************************************************************************
 */
__STATIC int gattc_write_req_ind_handler(
    ke_msg_id_t const msgid, struct gattc_write_req_ind const *param,
    ke_task_id_t const dest_id, ke_task_id_t const src_id) {
  // Get the address of the environment
  struct lans_env_tag *lans_env = PRF_ENV_GET(LANS, lans);
  uint8_t conidx = KE_IDX_GET(src_id);
  // Message status
  uint8_t msg_status = KE_MSG_CONSUMED;
  // Status
  uint8_t status = GAP_ERR_NO_ERROR;
  // Control Point Status
  uint8_t ctl_pt_status = LANP_LN_CTNL_PT_RESP_SUCCESS;

  if (lans_env != NULL) {
    // Location and speed Characteristic, Client Characteristic Configuration
    // Descriptor
    if (param->handle == (LANS_HANDLE(LNS_IDX_LOC_SPEED_NTF_CFG))) {
      // Update value
      status = lans_update_characteristic_config(
          conidx, LANS_PRF_CFG_FLAG_LOC_SPEED_NTF, param);
    }

    // Navigation Characteristic, Client Characteristic Configuration Descriptor
    else if (param->handle == (LANS_HANDLE(LNS_IDX_NAVIGATION_NTF_CFG))) {
      if (LANS_IS_FEATURE_SUPPORTED(lans_env->prfl_cfg, LANS_NAVI_MASK)) {
        // Update value
        status = lans_update_characteristic_config(
            conidx, LANS_PRF_CFG_FLAG_NAVIGATION_NTF, param);
      } else {
        status = ATT_ERR_ATTRIBUTE_NOT_FOUND;
      }
    }
    // LN Control Point Characteristic
    else {
      if (LANS_IS_FEATURE_SUPPORTED(lans_env->prfl_cfg, LANS_LN_CTNL_PT_MASK)) {
        // LN Control Point, Client Characteristic Configuration Descriptor
        if (param->handle == (LANS_HANDLE(LNS_IDX_LN_CTNL_PT_IND_CFG))) {
          // Update value
          status = lans_update_characteristic_config(
              conidx, LANS_PRF_CFG_FLAG_LN_CTNL_PT_IND, param);
        }
        // LN Control Point Characteristic
        else if (param->handle == (LANS_HANDLE(LNS_IDX_LN_CTNL_PT_VAL))) {
          do {
            // Check if sending of indications has been enabled
            if (!LANS_IS_NTF_IND_ENABLED(conidx,
                                         LANS_PRF_CFG_FLAG_LN_CTNL_PT_IND)) {
              // CCC improperly configured
              status = PRF_CCCD_IMPR_CONFIGURED;
              break;
            }

            if (lans_env->operation >= LANS_SET_CUMUL_VALUE_OP_CODE) {
              // A procedure is already in progress
              status = LAN_ERROR_PROC_IN_PROGRESS;
              break;
            }

            if (lans_env->operation == LANS_NTF_LOC_SPEED_OP_CODE) {
              // Keep the message until the end of the current procedure
              msg_status = KE_MSG_SAVED;
              break;
            }

            // Unpack Control Point parameters
            ctl_pt_status = lans_unpack_ln_ctnl_point_ind(conidx, param);

          } while (0);
        } else {
          ASSERT_ERR(0);
        }
      } else {
        status = ATT_ERR_ATTRIBUTE_NOT_FOUND;
      }
    }
  }

  // Send write response
  struct gattc_write_cfm *cfm =
      KE_MSG_ALLOC(GATTC_WRITE_CFM, src_id, dest_id, gattc_write_cfm);
  cfm->handle = param->handle;
  cfm->status = status;
  ke_msg_send(cfm);

  // Check if control point failed
  if ((param->handle == (LANS_HANDLE(LNS_IDX_LN_CTNL_PT_VAL))) &&
      (ctl_pt_status != LANP_LN_CTNL_PT_RESP_SUCCESS)) {
    // Send response to peer
    lans_send_rsp_ind(conidx, param->value[0], ctl_pt_status);
  }

  return (int)msg_status;
}

/**
 ****************************************************************************************
 * @brief Handles @ref GATT_NOTIFY_CMP_EVT message meaning that a notification
 *or an indication has been correctly sent to peer device (but not confirmed by
 *peer device).
 *
 * @param[in] msgid     Id of the message received.
 * @param[in] param     Pointer to the parameters of the message.
 * @param[in] dest_id   ID of the receiving task instance
 * @param[in] src_id    ID of the sending task instance.
 * @return If the message was consumed or not.
 ****************************************************************************************
 */
__STATIC int gattc_cmp_evt_handler(ke_msg_id_t const msgid,
                                   struct gattc_cmp_evt const *param,
                                   ke_task_id_t const dest_id,
                                   ke_task_id_t const src_id) {
  uint8_t conidx = KE_IDX_GET(src_id);
  // Get the address of the environment
  struct lans_env_tag *lans_env = PRF_ENV_GET(LANS, lans);
  // Check if a connection exists
  if (ke_state_get(dest_id) == LANS_BUSY) {
    switch (param->operation) {
    case (GATTC_NOTIFY): {
      lans_exe_operation();
      // else ignore the message
    } break;

    case (GATTC_INDICATE): {
      ASSERT_ERR(lans_env->operation >= LANS_SET_CUMUL_VALUE_OP_CODE);

      // Inform the application that a procedure has been completed
      lans_send_cmp_evt(conidx, prf_src_task_get(&(lans_env->prf_env), conidx),
                        prf_dst_task_get(&(lans_env->prf_env), conidx),
                        lans_env->operation, param->status);
      // else ignore the message
    } break;

    default: {
      ASSERT_ERR(0);
    } break;
    }
  }

  return (KE_MSG_CONSUMED);
}

/*
 * GLOBAL VARIABLE DEFINITIONS
 ****************************************************************************************
 */

/// Specifies the default message handlers
KE_MSG_HANDLER_TAB(lans){
    {LANS_ENABLE_REQ, (ke_msg_func_t)lans_enable_req_handler},
    {GATTC_READ_REQ_IND, (ke_msg_func_t)gattc_read_req_ind_handler},
    {GATTC_ATT_INFO_REQ_IND, (ke_msg_func_t)gattc_att_info_req_ind_handler},
    {LANS_NTF_LOC_SPEED_REQ, (ke_msg_func_t)lans_ntf_loc_speed_req_handler},
    {LANS_UPD_POS_Q_REQ, (ke_msg_func_t)lans_upd_pos_q_req_handler},
    {LANS_NTF_NAVIGATION_REQ, (ke_msg_func_t)lans_ntf_navigation_req_handler},
    {LANS_LN_CTNL_PT_CFM, (ke_msg_func_t)lans_ln_ctnl_pt_cfm_handler},
    {GATTC_WRITE_REQ_IND, (ke_msg_func_t)gattc_write_req_ind_handler},
    {GATTC_CMP_EVT, (ke_msg_func_t)gattc_cmp_evt_handler},
};

void lans_task_init(struct ke_task_desc *task_desc) {
  // Get the address of the environment
  struct lans_env_tag *lans_env = PRF_ENV_GET(LANS, lans);

  task_desc->msg_handler_tab = lans_msg_handler_tab;
  task_desc->msg_cnt = ARRAY_LEN(lans_msg_handler_tab);
  task_desc->state = lans_env->state;
  task_desc->idx_max = LANS_IDX_MAX;
}

#endif //(BLE_LN_SENSOR)

/// @} LANSTASK