#include "FileDirectiveSerializer.h"


FileDirectiveSerializer::FileDirectiveSerializer(PduConfig &pduConf,
        cfdp::FileDirectives directiveCode, size_t directiveParamFieldLen):
        HeaderSerializer(pduConf, cfdp::PduType::FILE_DIRECTIVE, directiveParamFieldLen + 1),
        directiveCode(directiveCode) {
}

size_t FileDirectiveSerializer::getSerializedSize() const {
    return HeaderSerializer::getSerializedSize() + 1;
}

ReturnValue_t FileDirectiveSerializer::serialize(uint8_t **buffer, size_t *size, size_t maxSize,
        Endianness streamEndianness) const {
    if(buffer == nullptr or size == nullptr) {
        return HasReturnvaluesIF::RETURN_FAILED;
    }
    if(FileDirectiveSerializer::getWholePduSize() > maxSize) {
        return BUFFER_TOO_SHORT;
    }
    ReturnValue_t result = HeaderSerializer::serialize(buffer, size, maxSize, streamEndianness);
    if(result != HasReturnvaluesIF::RETURN_OK) {
        return result;
    }

    if(*size >= maxSize) {
        return BUFFER_TOO_SHORT;
    }
    **buffer = directiveCode;
    *buffer += 1;
    *size += 1;
    return HasReturnvaluesIF::RETURN_OK;
}

void FileDirectiveSerializer::setDirectiveDataFieldLen(size_t len) {
    // Set length of data field plus 1 byte for the directive octet
    HeaderSerializer::setPduDataFieldLen(len + 1);
}