//
// Created by cfif on 24.06.2024.
//
#include "ext_telematica.h"
//#include "FirmwareMetadataSection.h"
#include "string.h"
#include "ld_adr.h"

tMmaTeleAdr EXT_ENV_ADR_TELE;


bool loadMetaTelematica() {
    tMetaSectionData *metaSectionData;

    uint32_t offsetMeta = 0x08000000 + BOOT_AREA_LENGTH + FIRMWARE_MAIN_AREA_LENGTH + FIRMWARE_MAIN_UPDATE_AREA_LENGTH +
                          FIRMWARE_TELE_AREA_LENGTH - 256;
    uint32_t offsetTele = 0x08000000 + BOOT_AREA_LENGTH + FIRMWARE_MAIN_AREA_LENGTH + FIRMWARE_MAIN_UPDATE_AREA_LENGTH;


    uint32_t pos = offsetMeta;
    uint32_t offsetMetaCrc = (*(uint32_t *) pos);
    pos += 4;
    uint32_t offsetMetaSize = (*(uint32_t *) (pos));
    pos += 4;


    EXT_ENV_ADR_TELE.FW_NAME.length = (*(uint8_t *) (pos));
    pos += 1;

    if (EXT_ENV_ADR_TELE.FW_NAME.length > 32) {
        EXT_ENV_ADR_TELE.FW_NAME.length = 0;
        return false;
    }

    memcpy(EXT_ENV_ADR_TELE.FW_NAME.data, (uint8_t *) (pos), EXT_ENV_ADR_TELE.FW_NAME.length);
    pos += EXT_ENV_ADR_TELE.FW_NAME.length;


    EXT_ENV_ADR_TELE.HW_NAME.length = (*(uint8_t *) (pos));
    pos += 1;

    if (EXT_ENV_ADR_TELE.HW_NAME.length > 32) {
        EXT_ENV_ADR_TELE.HW_NAME.length = 0;
        return false;
    }

    memcpy(EXT_ENV_ADR_TELE.HW_NAME.data, (uint8_t *) (pos), EXT_ENV_ADR_TELE.HW_NAME.length);
    pos += EXT_ENV_ADR_TELE.HW_NAME.length;


    uint32_t crc32 = 0;
    for (uint32_t i = 0; i < FIRMWARE_TELE_AREA_LENGTH - 256; ++i) {
        crc32 += ((uint8_t *) offsetTele)[i];
    }

    if (offsetMetaSize != FIRMWARE_TELE_AREA_LENGTH - 256)
        return false;

    if ((crc32 != offsetMetaCrc) && (offsetMetaCrc != 0))
        return false;

    uint32_t offset =
            offsetMeta + sizeof(offsetMetaCrc) + sizeof(offsetMetaSize) + 1 + EXT_ENV_ADR_TELE.FW_NAME.length + 1 + EXT_ENV_ADR_TELE.HW_NAME.length;

    metaSectionData = (tMetaSectionData *) offset;

    EXT_ENV_ADR_TELE.META_EXT_ENV_TELE = metaSectionData->meta_ext_env_tele;
    EXT_ENV_ADR_TELE.tele_func = (p_tele_func) metaSectionData->meta_tele_func;


    return true;
}