/*
 * Copyright Meta Platforms, Inc. and its affiliates.
 *
 * SPDX-License-Identifier: Apache-2.0
 */

#include <errno.h>
#include <zephyr/debug/coredump.h>

static int error;
static bool is_valid;

static void coredump_empty_backend_start(void)
{
	/* Reset error, is_valid */
	error = 0;
	is_valid = false;
}

static void coredump_empty_backend_end(void)
{
	is_valid = true;
}

static void coredump_empty_backend_buffer_output(uint8_t *buf, size_t buflen)
{
	/* no-op */
}

static int coredump_empty_backend_query(enum coredump_query_id query_id,
					  void *arg)
{
	int ret;

	switch (query_id) {
	case COREDUMP_QUERY_GET_ERROR:
		ret = error;
		break;
	case COREDUMP_QUERY_HAS_STORED_DUMP:
		ret = 0;
		if (is_valid) {
			ret = 1;
		}
		break;
	case COREDUMP_QUERY_GET_STORED_DUMP_SIZE:
		ret = 0;
		break;
	default:
		ret = -ENOTSUP;
		break;
	}

	return ret;
}

static int coredump_empty_backend_cmd(enum coredump_cmd_id cmd_id,
					void *arg)
{
	int ret;

	switch (cmd_id) {
	case COREDUMP_CMD_CLEAR_ERROR:
		error = 0;
		ret = 0;
		break;
	case COREDUMP_CMD_VERIFY_STORED_DUMP:
		ret = 0;
		if (is_valid) {
			ret = 1;
		}
		break;
	case COREDUMP_CMD_INVALIDATE_STORED_DUMP:
		is_valid = false;
		ret = 0;
		break;
	case COREDUMP_CMD_ERASE_STORED_DUMP:
		is_valid = false;
		ret = 0;
		break;
	default:
		ret = -ENOTSUP;
		break;
	}

	return ret;
}

struct coredump_backend_api coredump_backend_other = {
	.start = coredump_empty_backend_start,
	.end = coredump_empty_backend_end,
	.buffer_output = coredump_empty_backend_buffer_output,
	.query = coredump_empty_backend_query,
	.cmd = coredump_empty_backend_cmd,
};