#include "clar_libgit2.h"
#include "repository.h"
#include "backend_helpers.h"

static git_repository *_repo;
static fake_backend *_fake;

#define HASH "deadbeefdeadbeefdeadbeefdeadbeefdeadbeef"
#define EMPTY_HASH "e69de29bb2d1d6434b8b29ae775ad8c2e48c5391"

static git_oid _oid;
static git_oid _empty_oid;

static void setup_repository_and_backend(git_error_code error_code, const char *hash)
{
	git_odb *odb = NULL;
	git_odb_backend *backend = NULL;
	git_oid oid;

	_repo = cl_git_sandbox_init("testrepo.git");

	cl_git_pass(git_oid_fromstr(&oid, hash));
	cl_git_pass(build_fake_backend(&backend, error_code, &oid));

	cl_git_pass(git_repository_odb__weakptr(&odb, _repo));
	cl_git_pass(git_odb_add_backend(odb, backend, 10));

	_fake = (fake_backend *)backend;
}

void test_odb_backend_nonrefreshing__initialize(void)
{
	git_oid_fromstr(&_oid, HASH);
	git_oid_fromstr(&_empty_oid, EMPTY_HASH);
}

void test_odb_backend_nonrefreshing__cleanup(void)
{
	cl_git_sandbox_cleanup();
}

void test_odb_backend_nonrefreshing__exists_is_invoked_once_on_failure(void)
{
	git_odb *odb;

	setup_repository_and_backend(GIT_ENOTFOUND, HASH);

	cl_git_pass(git_repository_odb__weakptr(&odb, _repo));
	cl_assert_equal_b(false, git_odb_exists(odb, &_oid));

	cl_assert_equal_i(1, _fake->exists_calls);
}

void test_odb_backend_nonrefreshing__read_is_invoked_once_on_failure(void)
{
	git_object *obj;

	setup_repository_and_backend(GIT_ENOTFOUND, HASH);

	cl_git_fail_with(
		git_object_lookup(&obj, _repo, &_oid, GIT_OBJ_ANY),
		GIT_ENOTFOUND);

	cl_assert_equal_i(1, _fake->read_calls);
}

void test_odb_backend_nonrefreshing__readprefix_is_invoked_once_on_failure(void)
{
	git_object *obj;

	setup_repository_and_backend(GIT_ENOTFOUND, HASH);

	cl_git_fail_with(
		git_object_lookup_prefix(&obj, _repo, &_oid, 7, GIT_OBJ_ANY),
		GIT_ENOTFOUND);

	cl_assert_equal_i(1, _fake->read_prefix_calls);
}

void test_odb_backend_nonrefreshing__readheader_is_invoked_once_on_failure(void)
{
	git_odb *odb;
	size_t len;
	git_otype type;

	setup_repository_and_backend(GIT_ENOTFOUND, HASH);

	cl_git_pass(git_repository_odb__weakptr(&odb, _repo));

	cl_git_fail_with(
		git_odb_read_header(&len, &type, odb, &_oid),
		GIT_ENOTFOUND);

	cl_assert_equal_i(1, _fake->read_header_calls);
}

void test_odb_backend_nonrefreshing__exists_is_invoked_once_on_success(void)
{
	git_odb *odb;

	setup_repository_and_backend(GIT_OK, HASH);

	cl_git_pass(git_repository_odb__weakptr(&odb, _repo));
	cl_assert_equal_b(true, git_odb_exists(odb, &_oid));

	cl_assert_equal_i(1, _fake->exists_calls);
}

void test_odb_backend_nonrefreshing__read_is_invoked_once_on_success(void)
{
	git_object *obj;

	setup_repository_and_backend(GIT_OK, EMPTY_HASH);

	cl_git_pass(git_object_lookup(&obj, _repo, &_empty_oid, GIT_OBJ_ANY));

	cl_assert_equal_i(1, _fake->read_calls);

	git_object_free(obj);
}

void test_odb_backend_nonrefreshing__readprefix_is_invoked_once_on_success(void)
{
	git_object *obj;

	setup_repository_and_backend(GIT_OK, EMPTY_HASH);

	cl_git_pass(git_object_lookup_prefix(&obj, _repo, &_empty_oid, 7, GIT_OBJ_ANY));

	cl_assert_equal_i(1, _fake->read_prefix_calls);

	git_object_free(obj);
}

void test_odb_backend_nonrefreshing__readheader_is_invoked_once_on_success(void)
{
	git_odb *odb;
	size_t len;
	git_otype type;

	setup_repository_and_backend(GIT_OK, HASH);

	cl_git_pass(git_repository_odb__weakptr(&odb, _repo));

	cl_git_pass(git_odb_read_header(&len, &type, odb, &_oid));

	cl_assert_equal_i(1, _fake->read_header_calls);
}

void test_odb_backend_nonrefreshing__read_is_invoked_once_when_revparsing_a_full_oid(void)
{
	git_object *obj;

	setup_repository_and_backend(GIT_ENOTFOUND, HASH);

	cl_git_fail_with(
		git_revparse_single(&obj, _repo, "deadbeefdeadbeefdeadbeefdeadbeefdeadbeef"),
		GIT_ENOTFOUND);

	cl_assert_equal_i(1, _fake->read_calls);
}