/* ----------------------------------------------------------------------------
 * Copyright (c) Huawei Technologies Co., Ltd. 2013-2021. All rights reserved.
 * Description: Ota Flag Operate Upgrade
 * Author: Huawei LiteOS Team
 * Create: 2013-01-01
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 * 1. Redistributions of source code must retain the above copyright notice, this list of
 * conditions and the following disclaimer.
 * 2. 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.
 * 3. Neither the name of the copyright holder 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 HOLDER 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 <stddef.h>
#include "upgrade_flag.h"
#include "flag_manager.h"
#include "ota_crc.h"

typedef struct {
    upgrade_type_e upgrade_type;
    upgrade_state_e upgrade_state;
    uint32_t image_size; // new image size
    uint32_t old_image_size; // old image size
    uint32_t recover_verify; 
    uint32_t verify_length;
    uint32_t crc_flag;
} upgrade_flag_s;

static upgrade_flag_s g_flag;

int flag_upgrade_init(void)
{
    int ret;
    uint32_t crc;

    ret = flag_read(FLAG_BOOTLOADER, &g_flag, sizeof(upgrade_flag_s));
    if (ret != 0) {
        return ret;
    }

    crc = calc_crc32(0, &g_flag, sizeof(upgrade_flag_s) - sizeof(uint32_t));
    if (crc != g_flag.crc_flag) {
        g_flag.upgrade_state = OTA_IDLE;
        g_flag.upgrade_type = UPGRADE_NONE;
        g_flag.recover_verify = 0;
        g_flag.image_size = 0;
        g_flag.old_image_size = 0;
        g_flag.crc_flag = calc_crc32(0, &g_flag, sizeof(upgrade_flag_s) - sizeof(uint32_t));
        return flag_write(FLAG_BOOTLOADER, &g_flag, sizeof(upgrade_flag_s));
    }
    return 0;
}

int flag_set_info(upgrade_type_e upgrade_type, uint32_t image_size)
{
    g_flag.upgrade_type = upgrade_type;
    g_flag.image_size = image_size;
    g_flag.upgrade_state = OTA_NEED_UPGRADE;
    g_flag.crc_flag = calc_crc32(0, &g_flag, sizeof(upgrade_flag_s) - sizeof(uint32_t));
    return flag_write(FLAG_BOOTLOADER, &g_flag, sizeof(upgrade_flag_s));
}

void flag_get_info(upgrade_type_e *upgrade_type, uint32_t *image_size, uint32_t *old_image_size,
                   upgrade_state_e *upgrade_state)
{
    if (upgrade_type != NULL) {
        *upgrade_type = g_flag.upgrade_type;
    }
    if (image_size != NULL) {
        *image_size = g_flag.image_size;
    }
    if (old_image_size != NULL) {
        *old_image_size = g_flag.old_image_size;
    }
    if (upgrade_state != NULL) {
        *upgrade_state = g_flag.upgrade_state;
    }
}

int flag_upgrade_set_result(upgrade_state_e state, uint32_t image_size)
{
    g_flag.upgrade_state = state;
    g_flag.image_size = image_size;
    g_flag.crc_flag = calc_crc32(0, &g_flag, sizeof(upgrade_flag_s) - sizeof(uint32_t));
    return flag_write(FLAG_BOOTLOADER, &g_flag, sizeof(upgrade_flag_s));
}

int flag_upgrade_get_result(upgrade_state_e *state)
{
    if (state != NULL) {
        *state = g_flag.upgrade_state;
    }
    if (g_flag.upgrade_state == OTA_SUCCEED) {
        g_flag.old_image_size = g_flag.image_size;
    }
    g_flag.upgrade_state = OTA_IDLE;
    g_flag.upgrade_type = UPGRADE_NONE;
    g_flag.crc_flag = calc_crc32(0, &g_flag, sizeof(upgrade_flag_s) - sizeof(uint32_t));
    return flag_write(FLAG_BOOTLOADER, &g_flag, sizeof(upgrade_flag_s));
}

int flag_set_recover_verify(uint32_t recover_verify, uint32_t verify_length)
{
    g_flag.recover_verify = recover_verify;
    g_flag.verify_length = verify_length;
    g_flag.crc_flag = calc_crc32(0, &g_flag, sizeof(upgrade_flag_s) - sizeof(uint32_t));
    return flag_write(FLAG_BOOTLOADER, &g_flag, sizeof(upgrade_flag_s));
}

void flag_get_recover_verify(uint32_t *recover_verify, uint32_t *verify_length)
{
    if (recover_verify != NULL) {
        *recover_verify = g_flag.recover_verify;
    }
    if (verify_length != NULL) {
        *verify_length = g_flag.verify_length;
    }
}

int recover_set_update_fail(void)
{
    g_flag.upgrade_state = OTA_FAILED;
    g_flag.crc_flag = calc_crc32(0, &g_flag, sizeof(upgrade_flag_s) - sizeof(uint32_t));
    return flag_write(FLAG_BOOTLOADER, &g_flag, sizeof(upgrade_flag_s));
}

