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/*  test_pck_packer.h                                                    */
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#ifndef TEST_PCK_PACKER_H
#define TEST_PCK_PACKER_H

#include "core/io/file_access_pack.h"
#include "core/io/pck_packer.h"
#include "core/os/os.h"

#include "thirdparty/doctest/doctest.h"

namespace TestPCKPacker {

// Dummy 64-character encryption key (since it's required).
constexpr const char *ENCRYPTION_KEY = "0000000000000000000000000000000000000000000000000000000000000000";

TEST_CASE("[PCKPacker] Pack an empty PCK file") {
	PCKPacker pck_packer;
	const String output_pck_path = OS::get_singleton()->get_cache_path().plus_file("output_empty.pck");
	CHECK_MESSAGE(
			pck_packer.pck_start(
					output_pck_path,
					32,
					ENCRYPTION_KEY) == OK,
			"Starting a PCK file should return an OK error code.");

	CHECK_MESSAGE(
			pck_packer.flush() == OK,
			"Flushing the PCK should return an OK error code.");

	Error err;
	FileAccessRef f = FileAccess::open(output_pck_path, FileAccess::READ, &err);
	CHECK_MESSAGE(
			err == OK,
			"The generated empty PCK file should be opened successfully.");
	CHECK_MESSAGE(
			f->get_length() >= 100,
			"The generated empty PCK file shouldn't be too small (it should have the PCK header).");
	CHECK_MESSAGE(
			f->get_length() <= 500,
			"The generated empty PCK file shouldn't be too large.");
}

TEST_CASE("[PCKPacker] Pack a PCK file with some files and directories") {
	PCKPacker pck_packer;
	const String output_pck_path = OS::get_singleton()->get_cache_path().plus_file("output_with_files.pck");
	CHECK_MESSAGE(
			pck_packer.pck_start(
					output_pck_path,
					32,
					ENCRYPTION_KEY) == OK,
			"Starting a PCK file should return an OK error code.");

	const String base_dir = OS::get_singleton()->get_executable_path().get_base_dir();

	CHECK_MESSAGE(
			pck_packer.add_file("version.py", base_dir.plus_file("../version.py"), "version.py") == OK,
			"Adding a file to the PCK should return an OK error code.");
	CHECK_MESSAGE(
			pck_packer.add_file("some/directories with spaces/to/create/icon.png", base_dir.plus_file("../icon.png")) == OK,
			"Adding a file to a new subdirectory in the PCK should return an OK error code.");
	CHECK_MESSAGE(
			pck_packer.add_file("some/directories with spaces/to/create/icon.svg", base_dir.plus_file("../icon.svg")) == OK,
			"Adding a file to an existing subdirectory in the PCK should return an OK error code.");
	CHECK_MESSAGE(
			pck_packer.add_file("some/directories with spaces/to/create/icon.png", base_dir.plus_file("../logo.png")) == OK,
			"Overriding a non-flushed file to an existing subdirectory in the PCK should return an OK error code.");
	CHECK_MESSAGE(
			pck_packer.flush() == OK,
			"Flushing the PCK should return an OK error code.");

	Error err;
	FileAccessRef f = FileAccess::open(output_pck_path, FileAccess::READ, &err);
	CHECK_MESSAGE(
			err == OK,
			"The generated non-empty PCK file should be opened successfully.");
	CHECK_MESSAGE(
			f->get_length() >= 25000,
			"The generated non-empty PCK file should be large enough to actually hold the contents specified above.");
	CHECK_MESSAGE(
			f->get_length() <= 35000,
			"The generated non-empty PCK file shouldn't be too large.");
}
} // namespace TestPCKPacker

#endif // TEST_PCK_PACKER_H