#include "akerror.h"
#include "err_capture.h"
#include <string.h>

/*
 * A library may reserve its status range from its own init() before anything in
 * the process has raised an error, i.e. before akerr_init() has run. That used
 * to be silently destructive: akerr_init() clears the range and name tables, so
 * whichever component first triggered it (via PREPARE_ERROR) wiped the earlier
 * reservation, and the *next* component to claim the same range was told OK --
 * producing exactly the undetected aliasing the registry exists to prevent.
 *
 * Every public registry entry point now calls akerr_init() itself, so the
 * tables are only ever cleared before the first reservation, never after one.
 *
 * Note this test must not call akerr_init() or PREPARE_ERROR first -- the
 * uninitialized entry is the whole point.
 */

int main(void)
{
    akerr_capture_install();

    /* Cold call: no akerr_init(), no PREPARE_ERROR anywhere yet. */
    AKERR_CHECK(akerr_reserve_status_range(256, 16, "early-lib") ==
		AKERR_STATUS_RANGE_OK);
    AKERR_CHECK(akerr_register_status_name("early-lib", 256, "Early Error") ==
		AKERR_STATUS_NAME_OK);

    /* Something else now uses the library for the first time. */
    akerr_init();
    PREPARE_ERROR(e);
    (void)e;

    /* The early reservation and its name must both have survived. */
    AKERR_CHECK(strcmp(akerr_name_for_status(256, NULL), "Early Error") == 0);
    AKERR_CHECK(akerr_reserve_status_range(256, 16, "late-lib") ==
		AKERR_STATUS_RANGE_OVERLAP);
    AKERR_CHECK_CONTAINS("early-lib");
    AKERR_CHECK(akerr_reserve_status_range(260, 2, "late-lib") ==
		AKERR_STATUS_RANGE_OVERLAP);

    /* The library's own initialization still happened exactly once. */
    AKERR_CHECK(strcmp(akerr_name_for_status(AKERR_NULLPOINTER, NULL),
		       "Null Pointer Error") == 0);
    AKERR_CHECK(akerr_reserve_status_range(0, AKERR_RESERVED_STATUS_COUNT,
					   AKERR_LIBRARY_OWNER) ==
		AKERR_STATUS_RANGE_OK);

    /* An identical repeat by the original owner is still idempotent. */
    AKERR_CHECK(akerr_reserve_status_range(256, 16, "early-lib") ==
		AKERR_STATUS_RANGE_OK);

    fprintf(stderr, "err_registry_init_order ok\n");
    return 0;
}