#include <stdio.h>
#include <string.h>
#include <stdlib.h>

#include <msgba/packet/save_response.h>

void
msPacketSaveResponseDestroy(struct msPacketSaveResponse **selfPtr) {
    free(*selfPtr);
    *selfPtr = NULL;
}

struct msPacketSaveResponse *
msPacketSaveResponseNew(uint64_t identifier, size_t saveLen, unsigned char *save) {
    struct msPacketSaveResponse *self = NULL;
    self = malloc(sizeof *self);
    self->identifier = identifier;
    self->saveLen =  saveLen;
    self->save = save;
    return self;
}

unsigned char *
msPacketSaveResponseSerialize(struct msPacketSaveResponse *const self, size_t *len) {
    unsigned char *result = NULL;
    size_t identifier = self->identifier;
    size_t saveLen = self->saveLen;
    size_t currentCursor = 0; 

    if (!len) {
        goto return_ms_packet_save_response_serialize;
    }

    *len = sizeof identifier + sizeof saveLen + sizeof *result * saveLen;
    result = malloc(*len);
    
    identifier = htobe64(identifier);
    saveLen = htobe64(saveLen);

    memcpy(&result[currentCursor], &identifier, sizeof identifier); // NOLINT
    currentCursor += sizeof identifier;

    memcpy(&result[currentCursor], &saveLen, sizeof saveLen); // NOLINT
    currentCursor += sizeof saveLen;
    saveLen = be64toh(saveLen);

    memcpy(&result[currentCursor], self->save, sizeof *result * saveLen); // NOLINT

return_ms_packet_save_response_serialize:
    return result;
}