// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at

//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#include <stdlib.h>
#include <string.h>
#include "common/bt_target.h"
#include "btc/btc_task.h"
#include "common/bt_trace.h"
#include "osi/thread.h"
#include "common/bt_defs.h"
#include "osi/allocator.h"
#include "btc/btc_main.h"
#include "btc/btc_dev.h"
#include "btc_gatts.h"
#include "btc_gattc.h"
#include "btc_gatt_common.h"
#include "btc_gap_ble.h"
#include "btc_blufi_prf.h"
#include "btc/btc_dm.h"
#include "btc/btc_alarm.h"
#include "bta/bta_gatt_api.h"
#if CLASSIC_BT_INCLUDED
#include "btc/btc_profile_queue.h"
#if (BTC_GAP_BT_INCLUDED == TRUE)
#include "btc_gap_bt.h"
#endif /* BTC_GAP_BT_INCLUDED == TRUE */
#if BTC_AV_INCLUDED
#include "btc_av.h"
#include "btc_avrc.h"
#endif /* #if BTC_AV_INCLUDED */
#if (BTC_SPP_INCLUDED == TRUE)
#include "btc_spp.h"
#endif /* #if (BTC_SPP_INCLUDED == TRUE) */
#if BTC_HF_CLIENT_INCLUDED
#include "btc_hf_client.h"
#endif  /* #if BTC_HF_CLIENT_INCLUDED */
#endif /* #if CLASSIC_BT_INCLUDED */

#define BTC_TASK_PINNED_TO_CORE         (TASK_PINNED_TO_CORE)
#define BTC_TASK_STACK_SIZE             (BT_BTC_TASK_STACK_SIZE + BT_TASK_EXTRA_STACK_SIZE)	//by menuconfig
#define BTC_TASK_NAME                   "btcT"
#define BTC_TASK_PRIO                   (BT_TASK_MAX_PRIORITIES - 6)

static osi_thread_t *btc_thread;

static btc_func_t profile_tab[BTC_PID_NUM] = {
    [BTC_PID_MAIN_INIT]   = {btc_main_call_handler,       NULL                    },
    [BTC_PID_DEV]         = {btc_dev_call_handler,        NULL                    },
#if (GATTS_INCLUDED == TRUE)
    [BTC_PID_GATTS]       = {btc_gatts_call_handler,      btc_gatts_cb_handler    },
#endif  ///GATTS_INCLUDED == TRUE
#if (GATTC_INCLUDED == TRUE)
    [BTC_PID_GATTC]       = {btc_gattc_call_handler,      btc_gattc_cb_handler    },
#endif  ///GATTC_INCLUDED == TRUE
#if (GATTS_INCLUDED == TRUE || GATTC_INCLUDED == TRUE)
    [BTC_PID_GATT_COMMON] = {btc_gatt_com_call_handler,   NULL                    },
#endif //GATTC_INCLUDED == TRUE || GATTS_INCLUDED == TRUE
    [BTC_PID_GAP_BLE]     = {btc_gap_ble_call_handler,    btc_gap_ble_cb_handler  },
    [BTC_PID_BLE_HID]     = {NULL, NULL},
    [BTC_PID_SPPLIKE]     = {NULL, NULL},
#if (GATTS_INCLUDED == TRUE)
    [BTC_PID_BLUFI]       = {btc_blufi_call_handler,      btc_blufi_cb_handler    },
#endif  ///GATTS_INCLUDED == TRUE
    [BTC_PID_DM_SEC]      = {NULL,                        btc_dm_sec_cb_handler   },
    [BTC_PID_ALARM]       = {btc_alarm_handler,           NULL                    },
#if CLASSIC_BT_INCLUDED
#if (BTC_GAP_BT_INCLUDED == TRUE)
    [BTC_PID_GAP_BT]    = {btc_gap_bt_call_handler,     btc_gap_bt_cb_handler   },
#endif /* (BTC_GAP_BT_INCLUDED == TRUE) */
    [BTC_PID_PRF_QUE]     = {btc_profile_queue_handler,   NULL                    },
#if BTC_AV_INCLUDED
    [BTC_PID_A2DP]        = {btc_a2dp_call_handler,       btc_a2dp_cb_handler     },
    [BTC_PID_AVRC_CT]     = {btc_avrc_ct_call_handler,    NULL                    },
    [BTC_PID_AVRC_TG]     = {btc_avrc_tg_call_handler,    NULL                    },
#endif /* #if BTC_AV_INCLUDED */
#if (BTC_SPP_INCLUDED == TRUE)
    [BTC_PID_SPP]         = {btc_spp_call_handler,        btc_spp_cb_handler      },
#endif /* #if (BTC_SPP_INCLUDED == TRUE) */
#if BTC_HF_CLIENT_INCLUDED
    [BTC_PID_HF_CLIENT]   = {btc_hf_client_call_handler,  btc_hf_client_cb_handler},
#endif  /* #if BTC_HF_CLIENT_INCLUDED */
#endif /* #if CLASSIC_BT_INCLUDED */
};

/*****************************************************************************
**
** Function         btc_task
**
** Description      Process profile Task Thread.
******************************************************************************/
static void btc_thread_handler(void *arg)
{
    btc_msg_t *msg = (btc_msg_t *)arg;

    BTC_TRACE_DEBUG("%s msg %u %u %u %p\n", __func__, msg->sig, msg->pid, msg->act, msg->arg);
    switch (msg->sig) {
    case BTC_SIG_API_CALL:
        profile_tab[msg->pid].btc_call(msg);
        break;
    case BTC_SIG_API_CB:
        profile_tab[msg->pid].btc_cb(msg);
        break;
    default:
        break;
    }

    if (msg->arg) {
        osi_free(msg->arg);
    }
    osi_free(msg);
}

static bt_status_t btc_task_post(btc_msg_t *msg, osi_thread_blocking_t blocking)
{
    btc_msg_t *lmsg;

    lmsg = (btc_msg_t *)osi_malloc(sizeof(btc_msg_t));
    if (lmsg == NULL) {
        return BT_STATUS_NOMEM;
    }

    memcpy(lmsg, msg, sizeof(btc_msg_t));

    if (osi_thread_post(btc_thread, btc_thread_handler, lmsg, 0, blocking) == false) {
        return BT_STATUS_BUSY;
    }

    return BT_STATUS_SUCCESS;
}

bt_status_t btc_transfer_context(btc_msg_t *msg, void *arg, int arg_len, btc_arg_deep_copy_t copy_func)
{
    btc_msg_t lmsg;

    if (msg == NULL) {
        return BT_STATUS_PARM_INVALID;
    }

    BTC_TRACE_DEBUG("%s msg %u %u %u %p\n", __func__, msg->sig, msg->pid, msg->act, arg);

    memcpy(&lmsg, msg, sizeof(btc_msg_t));
    if (arg) {
        lmsg.arg = (void *)osi_malloc(arg_len);
        if (lmsg.arg == NULL) {
            return BT_STATUS_NOMEM;
        }
        memset(lmsg.arg, 0x00, arg_len);    //important, avoid arg which have no length
        memcpy(lmsg.arg, arg, arg_len);
        if (copy_func) {
            copy_func(&lmsg, lmsg.arg, arg);
        }
    } else {
        lmsg.arg = NULL;
    }

    return btc_task_post(&lmsg, OSI_THREAD_BLOCKING);

}


int btc_init(void)
{
    btc_thread = osi_thread_create("BTC_TASK", BTC_TASK_STACK_SIZE, BTC_TASK_PRIO, BTC_TASK_PINNED_TO_CORE, 1);
    if (btc_thread == NULL) {
        return BT_STATUS_NOMEM;
    }

    btc_gap_callback_init();
#if SCAN_QUEUE_CONGEST_CHECK
    btc_adv_list_init();
#endif
    /* TODO: initial the profile_tab */
    return BT_STATUS_SUCCESS;
}

void btc_deinit(void)
{
    osi_thread_free(btc_thread);
    btc_thread = NULL;
#if SCAN_QUEUE_CONGEST_CHECK
    btc_adv_list_deinit();
#endif
}

bool btc_check_queue_is_congest(void)
{
    if (osi_thread_queue_wait_size(btc_thread, 0) >= QUEUE_CONGEST_SIZE) {
        return true;
    }

    return false;
}