/*
 *
 *      Sebastien L. 2023, sle118@hotmail.com
 *      Philippe G. 2023, philippe_44@outlook.com
 *
 *  This software is released under the MIT License.
 *  https://opensource.org/licenses/MIT
 *
 *  License Overview:
 *  ----------------
 *  The MIT License is a permissive open source license. As a user of this software, you are free to:
 *  - Use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of this software.
 *  - Use the software for private, commercial, or any other purposes.
 *
 *  Conditions:
 *  - You must include the above copyright notice and this permission notice in all
 *    copies or substantial portions of the Software.
 *
 *  The MIT License offers a high degree of freedom and is well-suited for both open source and
 *  commercial applications. It places minimal restrictions on how the software can be used,
 *  modified, and redistributed. For more details on the MIT License, please refer to the link above.
 */

#ifndef HTTP_SERVER_H_INCLUDED
#define HTTP_SERVER_H_INCLUDED
#include "driver/gpio.h"
#include "esp_console.h"
#include "esp_http_server.h"
#include "esp_log.h"
#include "esp_vfs.h"
#include "esp_wifi.h"
#include "freertos/FreeRTOS.h"
#include "freertos/event_groups.h"
#include "freertos/task.h"
#include "lwip/api.h"
#include "lwip/err.h"
#include "lwip/ip.h"
#include "lwip/memp.h"
#include "lwip/netdb.h"
#include "lwip/opt.h"
#include "lwip/priv/api_msg.h"
#include "lwip/priv/tcp_priv.h"
#include "lwip/priv/tcpip_priv.h"
#include "lwip/raw.h"
#include "lwip/udp.h"
#include "mdns.h"
#include "network_manager.h"
#include "nvs_flash.h"
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#ifdef __cplusplus
extern "C" {
#endif

#define ESP_LOGE_LOC(t, str, ...) ESP_LOGE(t, "%s(%d): " str, __FUNCTION__, __LINE__, ##__VA_ARGS__)
#define ESP_LOGI_LOC(t, str, ...) ESP_LOGI(t, "%s(%d): " str, __FUNCTION__, __LINE__, ##__VA_ARGS__)
#define ESP_LOGD_LOC(t, str, ...) ESP_LOGD(t, "%s(%d): " str, __FUNCTION__, __LINE__, ##__VA_ARGS__)
#define ESP_LOGW_LOC(t, str, ...) ESP_LOGW(t, "%s(%d): " str, __FUNCTION__, __LINE__, ##__VA_ARGS__)
#define ESP_LOGV_LOC(t, str, ...) ESP_LOGV(t, "%s(%d): " str, __FUNCTION__, __LINE__, ##__VA_ARGS__)

esp_err_t root_get_handler(httpd_req_t* req);
esp_err_t resource_filehandler(httpd_req_t* req);

esp_err_t connect_post_handler(httpd_req_t* req);
esp_err_t connect_delete_handler(httpd_req_t* req);
esp_err_t reboot_ota_post_handler(httpd_req_t* req);
esp_err_t reboot_post_handler(httpd_req_t* req);
esp_err_t recovery_post_handler(httpd_req_t* req);
esp_err_t flash_post_handler(httpd_req_t* req);
esp_err_t status_get_handler(httpd_req_t* req);
esp_err_t messages_get_handler(httpd_req_t* req);
esp_err_t console_cmd_get_handler(httpd_req_t* req);
esp_err_t console_cmd_post_handler(httpd_req_t* req);
esp_err_t ap_scan_handler(httpd_req_t* req);
esp_err_t redirect_ev_handler(httpd_req_t* req);
esp_err_t redirect_200_ev_handler(httpd_req_t* req);
esp_err_t data_post_handler(httpd_req_t* req);

esp_err_t err_handler(httpd_req_t* req, httpd_err_code_t error);
#define SCRATCH_BUFSIZE (8192)
#define FILE_PATH_MAX (ESP_VFS_PATH_MAX + 128)

typedef struct rest_server_context {
    char base_path[ESP_VFS_PATH_MAX + 1];
    char scratch[SCRATCH_BUFSIZE];
} rest_server_context_t;
/**
 * @brief RTOS task for the HTTP server. Do not start manually.
 * @see void http_server_start()
 */
void http_server(void* pvParameters);

/* @brief helper function that processes one HTTP request at a time */
void http_server_netconn_serve(struct netconn* conn);

/* @brief create the task for the http server */
esp_err_t http_server_start();

/**
 * @brief gets a char* pointer to the first occurence of header_name withing the complete http
 * request request.
 *
 * For optimization purposes, no local copy is made. memcpy can then be used in coordination with
 * len to extract the data.
 *
 * @param request the full HTTP raw request.
 * @param header_name the header that is being searched.
 * @param len the size of the header value if found.
 * @return pointer to the beginning of the header value.
 */
char* http_server_get_header(char* request, char* header_name, int* len);

void strreplace(char* src, char* str, char* rep);
/* @brief lock the json config object */
bool http_server_lock_json_object(TickType_t xTicksToWait);
/* @brief unlock the json config object */
void http_server_unlock_json_object();
httpd_handle_t http_get_server(int* port);
#define PROTECTED_JSON_CALL(a)                                                                     \
    if (http_server_lock_json_object(portMAX_DELAY)) {                                             \
        \ a;                                                                                       \
        http_server_unlocklock_json_object();                                                      \
    } else {                                                                                       \
        ESP_LOGE(TAG, "could not get access to json mutex in wifi_scan");                          \
    }

#ifdef __cplusplus
}
#endif

#endif