#include "MetadataPduSerializer.h"

MetadataPduSerializer::MetadataPduSerializer(PduConfig &conf, MetadataInfo &info):
        FileDirectiveSerializer(conf, cfdp::FileDirectives::METADATA, 5), info(info) {
    updateDirectiveFieldLen();
}

void MetadataPduSerializer::updateDirectiveFieldLen() {
    setDirectiveDataFieldLen(info.getSerializedSize(getLargeFileFlag()));
}

size_t MetadataPduSerializer::getSerializedSize() const {
    return FileDirectiveSerializer::getWholePduSize();
}

ReturnValue_t MetadataPduSerializer::serialize(uint8_t **buffer, size_t *size, size_t maxSize,
        Endianness streamEndianness) const {
    ReturnValue_t result = FileDirectiveSerializer::serialize(buffer, size, maxSize,
            streamEndianness);
    if(result != HasReturnvaluesIF::RETURN_OK) {
        return result;
    }
    if(*size + 1 >= maxSize) {
        return SerializeIF::BUFFER_TOO_SHORT;
    }
    **buffer = info.isClosureRequested() << 6 | info.getChecksumType();
    *buffer += 1;
    *size += 1;
    result = info.getFileSize().serialize(buffer, size, maxSize, streamEndianness);
    if(result != HasReturnvaluesIF::RETURN_OK) {
        return result;
    }
    result = info.getSourceFileName().serialize(buffer, size, maxSize, streamEndianness);
    if(result != HasReturnvaluesIF::RETURN_OK) {
        return result;
    }
    result = info.getDestFileName().serialize(buffer, size, maxSize, streamEndianness);
    if(result != HasReturnvaluesIF::RETURN_OK) {
        return result;
    }

    if(info.hasOptions()) {
        cfdp::Tlv** optsArray = nullptr;
        size_t optsLen = 0;
        info.getOptions(&optsArray, &optsLen, nullptr);
        for(size_t idx = 0; idx < optsLen; idx++) {
            result = optsArray[idx]->serialize(buffer, size, maxSize, streamEndianness);
            if(result != HasReturnvaluesIF::RETURN_OK) {
                return result;
            }
        }
    }
    return result;
}