/*
 * SPDX-FileCopyrightText: 2017-2022 Espressif Systems (Shanghai) CO LTD
 *
 * SPDX-License-Identifier: Apache-2.0
 */

#include <string.h>
#include <errno.h>

#include "esp_random.h"

#include "mesh/main.h"
#include "mesh/client_common.h"
#include "mesh/common.h"

IRAM_ATTR void *bt_mesh_malloc(size_t size)
{
#ifdef CONFIG_BLE_MESH_MEM_ALLOC_MODE_INTERNAL
    return heap_caps_malloc(size, MALLOC_CAP_INTERNAL|MALLOC_CAP_8BIT);
#elif CONFIG_BLE_MESH_MEM_ALLOC_MODE_EXTERNAL
    return heap_caps_malloc_prefer(size, 2, MALLOC_CAP_SPIRAM|MALLOC_CAP_8BIT, MALLOC_CAP_INTERNAL|MALLOC_CAP_8BIT);
#elif CONFIG_BLE_MESH_MEM_ALLOC_MODE_IRAM_8BIT
    return heap_caps_malloc_prefer(size, 2, MALLOC_CAP_INTERNAL|MALLOC_CAP_IRAM_8BIT, MALLOC_CAP_INTERNAL|MALLOC_CAP_8BIT);
#else
    return malloc(size);
#endif
}

IRAM_ATTR void *bt_mesh_calloc(size_t size)
{
#ifdef CONFIG_BLE_MESH_MEM_ALLOC_MODE_INTERNAL
    return heap_caps_calloc(1, size, MALLOC_CAP_INTERNAL|MALLOC_CAP_8BIT);
#elif CONFIG_BLE_MESH_MEM_ALLOC_MODE_EXTERNAL
    return heap_caps_calloc_prefer(1, size, 2, MALLOC_CAP_SPIRAM|MALLOC_CAP_8BIT, MALLOC_CAP_INTERNAL|MALLOC_CAP_8BIT);
#elif CONFIG_BLE_MESH_MEM_ALLOC_MODE_IRAM_8BIT
    return heap_caps_calloc_prefer(1, size, 2, MALLOC_CAP_INTERNAL|MALLOC_CAP_IRAM_8BIT, MALLOC_CAP_INTERNAL|MALLOC_CAP_8BIT);
#else
    return calloc(1, size);
#endif
}

IRAM_ATTR void bt_mesh_free(void *ptr)
{
    heap_caps_free(ptr);
}

struct net_buf_simple *bt_mesh_alloc_buf(uint16_t size)
{
    struct net_buf_simple *buf = NULL;
    uint8_t *data = NULL;

    buf = (struct net_buf_simple *)bt_mesh_calloc(sizeof(struct net_buf_simple) + size);
    if (!buf) {
        BT_ERR("%s, Out of memory", __func__);
        return NULL;
    }

    data = (uint8_t *)buf + sizeof(struct net_buf_simple);

    buf->data = data;
    buf->len = 0;
    buf->size = size;
    buf->__buf = data;

    return buf;
}

void bt_mesh_free_buf(struct net_buf_simple *buf)
{
    if (buf) {
        bt_mesh_free(buf);
    }
}

int bt_mesh_rand(void *buf, size_t len)
{
    if (buf == NULL || len == 0) {
        BT_ERR("%s, Invalid parameter", __func__);
        return -EINVAL;
    }

    esp_fill_random(buf, len);

    BT_DBG("Random %s", bt_hex(buf, len));

    return 0;
}

uint32_t bt_mesh_get_rand(void)
{
    return esp_random();
}