/******************************************************************************
 * 2016 ideasX (Tyler Berezowsky)
 *
 * FileName: config.c
 *
 * Description: This file is going to need alot of help by a C wizard, but it currently works...I think.
 *
 *     2016/8/8, v1.0 created this file
*******************************************************************************
*
* Copyright (c) 2014-2015, Tuan PM <tuanpm at live dot com>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of Redis nor the names of its contributors may be used
* to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include "util/config.h"
#include "log/esp_log.h"

static const char* TAG = "config.c";

/* CFG_LOCATION: 0x2
 * (CFG_LOCATION + 0)*0x1000 = 0x2000
 * (CFG_LOCATION + 1)*0x1000 = 0x3000
 * (CFG_LOCATION + 2)*0x1000 = 0x4000
 * (CFG_LOCATOIN + 3)*0x1000 = 0x5000
 *
 */

System_Config_t system_config;
Save_Flag_t save_flag;

void ICACHE_FLASH_ATTR cfg_save()
{
    ESP_LOGI(TAG, "Writing New Default Module Configuration");

    spi_flash_read((CFG_LOCATION + 3) * SPI_FLASH_SEC_SIZE,		    // read config sector 3 for
                       (uint32 *)&save_flag, sizeof(Save_Flag_t));		// save_flag

    if (save_flag.flag == 0) {
    spi_flash_erase_sector(CFG_LOCATION + 1); 					// erase config sector 1
    spi_flash_write((CFG_LOCATION + 1) * SPI_FLASH_SEC_SIZE,	// write system_config in config sector 1
    (uint32 *)&system_config, sizeof(System_Config_t);
    save_flag.flag = 1;											// set save_flag.flag
    spi_flash_erase_sector(CFG_LOCATION + 3);					// erase config sector 3
    spi_flash_write((CFG_LOCATION + 3) * SPI_FLASH_SEC_SIZE,	// write save_flag to config sector 3
    (uint32 *)&save_flag, sizeof(Save_Flag_t));
    }
    else {
    spi_flash_erase_sector(CFG_LOCATION + 0);					// erase config sector 0 for system_config
    spi_flash_write((CFG_LOCATION + 0) * SPI_FLASH_SEC_SIZE,			// write system_config to config sector 0
    (uint32 *)&system_config, sizeof(System_Config_t));
    save_flag.flag = 0;								// clear save_flag.flag
    spi_flash_erase_sector(CFG_LOCATION + 3);					// erase config sector 3
    spi_flash_write((CFG_LOCATION + 3) * SPI_FLASH_SEC_SIZE,			// write save_flag to config sector 3
    (uint32 *)&save_flag, sizeof(Save_Flag_t));
    }
}

void ICACHE_FLASH_ATTR cfg_load()
{
    ESP_LOGI(TAG, "Loading Default Module Configuration...");

    spi_flash_read((CFG_LOCATION + 3) * SPI_FLASH_SEC_SIZE,			// read save Flag to config sector 3
       (uint32 *)&save_flag, sizeof(Save_Flag_t));
    if (save_flag.flag == 0) {						// if save_flag.flag == 0
    spi_flash_read((CFG_LOCATION + 0) * SPI_FLASH_SEC_SIZE,		// write system_config to config sector 0
       (uint32 *)&system_config, sizeof(System_Config_t));
    } else {								// if save_flag.flag == 1
    spi_flash_read((CFG_LOCATION + 1) * SPI_FLASH_SEC_SIZE,		// write system_config to config sector 1
       (uint32 *)&system_config, sizeof(System_Config_t));
    }
    if(system_config.cfg_holder != CFG_HOLDER){			// if system_config doesn't contain the proper check value
    os_memset(&system_config, 0x00, sizeof(System_Config_t));	// clear system_config

    system_config.cfg_holder = CFG_HOLDER;

    os_sprintf(system_config.sta_ssid[0], "%s", DEFAULT_STA_SSID);				// load STA_SSID into system_config
    os_sprintf(system_config.sta_pwd[0], "%s", DEDFAULT_STA_PASS);				// load STA_PASS into system_config
    system_config.sta_type[0] = DEFAULT_STA_TYPE;				        				// load STA_TYPE into system_config
    system_config.registered_stations = 1;
    system_config.current_station = 0;

    wifi_get_macaddr(STATION_IF, system_config.device_id);
    os_sprintf(system_config.mqtt_host, "%s", DEFAULT_MQTT_HOST);							// load MQTT_HOST
    system_config.mqtt_port = DEFAULT_MQTT_PORT;											// load MQTT_PORT
    os_sprintf(system_config.mqtt_user, "%s", DEFAULT_MQTT_USER);							// load MQTT_USER
    os_sprintf(system_config.mqtt_pass, "%s", DEFAULT_MQTT_PASS);							// load MQTT_PASS

    system_config.security = DEFAULT_SECURITY;										/* default non ssl */
    system_config.mqtt_keepalive = DEFAULT_MQTT_KEEPALIVE;									// load MQTT_KEEPALIVE

    os_sprintf(system_config.ota_host, "%s", DEFAULT_OTA_HOST);
    system_config.ota_port = DEFAULT_OTA_PORT;

    cfg_save();
    }
}