#include "clar_libgit2.h"

#include "tag.h"

static git_repository *g_repo;

#define MAX_USED_TAGS 6

struct pattern_match_t

{

	const char* pattern;

	const size_t expected_matches;

	const char* expected_results[MAX_USED_TAGS];

};

// Helpers

static void ensure_tag_pattern_match(git_repository *repo,

									 const struct pattern_match_t* data)

{

	int already_found[MAX_USED_TAGS] = { 0 };

	git_strarray tag_list;

	int error = 0;

	size_t sucessfully_found = 0;

	size_t i, j;

	cl_assert(data->expected_matches <= MAX_USED_TAGS);

	if ((error = git_tag_list_match(&tag_list, data->pattern, repo)) < 0)

		goto exit;

	if (tag_list.count != data->expected_matches)

	{

		error = GIT_ERROR;

		goto exit;

	}

	// we have to be prepared that tags come in any order.

	for (i = 0; i < tag_list.count; i++)

	{

		for (j = 0; j < data->expected_matches; j++)

		{

			if (!already_found[j] && !strcmp(data->expected_results[j], tag_list.strings[i]))

			{

				already_found[j] = 1;

				sucessfully_found++;

				break;

			}

		}

	}

	cl_assert_equal_i((int)sucessfully_found, (int)data->expected_matches);

exit:

	git_strarray_free(&tag_list);

	cl_git_pass(error);

}

// Fixture setup and teardown

void test_object_tag_list__initialize(void)

{

	g_repo = cl_git_sandbox_init("testrepo");

}

void test_object_tag_list__cleanup(void)

{

	cl_git_sandbox_cleanup();

}

void test_object_tag_list__list_all(void)

{

	// list all tag names from the repository

	git_strarray tag_list;

	cl_git_pass(git_tag_list(&tag_list, g_repo));

	cl_assert_equal_i((int)tag_list.count, 6);

	git_strarray_free(&tag_list);

}

static const struct pattern_match_t matches[] = {

	// All tags, including a packed one and two namespaced ones.

	{ "", 6, { "e90810b", "point_to_blob", "test", "packed-tag", "foo/bar", "foo/foo/bar" } },

	// beginning with

	{ "t*", 1, { "test" } },

	// ending with

	{ "*b", 2, { "e90810b", "point_to_blob" } },

	// exact match

	{ "e", 0 },

	{ "e90810b", 1, { "e90810b" } },

	// either or

	{ "e90810[ab]", 1, { "e90810b" } },

	// glob in the middle

	{ "foo/*/bar", 1, { "foo/foo/bar" } },

	// The matching of '*' is based on plain string matching analog to the regular expression ".*"

	// => a '/' in the tag name has no special meaning.

	// Compare to `git tag -l "*bar"`

	{ "*bar", 2, { "foo/bar", "foo/foo/bar" } },

	// End of list

	{ NULL }

};

void test_object_tag_list__list_by_pattern(void)

{

	// list all tag names from the repository matching a specified pattern

	size_t i = 0;

	while (matches[i].pattern)

		ensure_tag_pattern_match(g_repo, &matches[i++]);

}