// SPDX-License-Identifier: MIT

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

#define STORE_PREFIX "build/mem-benchmark/oqs-temp-file-"
#define MAXPATHLEN 128

static OQS_STATUS oqs_fstore(const char *fname, const char *mname, uint8_t *data, size_t len) {
	char fpath[MAXPATHLEN];
	strcpy(fpath, STORE_PREFIX);
	strcat(fpath, mname);
	FILE *fp = fopen(strcat(fpath, fname), "wb");
	if (!fp) {
		fprintf(stderr, "Couldn't open %s for writing.\n", fpath);
		return OQS_ERROR;
	}
	fwrite(data, len, 1, fp);
	fclose(fp);
	return OQS_SUCCESS;
}

static OQS_STATUS oqs_fload(const char *fname, const char *mname, uint8_t *data, size_t len, size_t *rcvd) {
	size_t len_read = 0, r = 0;
	uint8_t *dr = NULL;
	char fpath[MAXPATHLEN];
	strcpy(fpath, STORE_PREFIX);
	strcat(fpath, mname);
	FILE *fp = fopen(strcat(fpath, fname), "rb");
	if (!fp) {
		fprintf(stderr, "Couldn't open %s for reading.\n", fpath);
		return OQS_ERROR;
	}
	do { // assume some OSs don't deliver all data in one go...
		dr = (uint8_t *)(data + len_read);
		r = fread(dr, 1, len - len_read, fp);
		len_read += r;
	} while (r > 0);
	*rcvd = len_read;
	if (len_read <= 0) {
		fprintf(stderr, "Error reading data (operations called in proper sequence?). Expecting %zu. Exiting.\n", len);
		return OQS_ERROR;
	}
	fclose(fp);
	return OQS_SUCCESS;
}