/*************************************************************************/
/*  zip_packer.cpp                                                       */
/*************************************************************************/
/*                       This file is part of:                           */
/*                           GODOT ENGINE                                */
/*                      https://godotengine.org                          */
/*************************************************************************/
/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur.                 */
/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md).   */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* "Software"), to deal in the Software without restriction, including   */
/* without limitation the rights to use, copy, modify, merge, publish,   */
/* distribute, sublicense, and/or sell copies of the Software, and to    */
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/* included in all copies or substantial portions of the Software.       */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/*************************************************************************/

#include "zip_packer.h"

#include "core/io/zip_io.h"
#include "core/os/os.h"

Error ZIPPacker::open(String p_path, ZipAppend p_append) {
	if (fa.is_valid()) {
		close();
	}

	zlib_filefunc_def io = zipio_create_io(&fa);
	zf = zipOpen2(p_path.utf8().get_data(), p_append, NULL, &io);
	return zf != NULL ? OK : FAILED;
}

Error ZIPPacker::close() {
	ERR_FAIL_COND_V_MSG(fa.is_null(), FAILED, "ZIPPacker cannot be closed because it is not open.");

	return zipClose(zf, NULL) == ZIP_OK ? OK : FAILED;
}

Error ZIPPacker::start_file(String p_path) {
	ERR_FAIL_COND_V_MSG(zf != NULL, FAILED, "ZIPPacker is already in use.");
	ERR_FAIL_COND_V_MSG(fa.is_null(), FAILED, "ZIPPacker must be opened before use.");

	zip_fileinfo zipfi;

	OS::DateTime time = OS::get_singleton()->get_datetime();

	zipfi.tmz_date.tm_hour = time.hour;
	zipfi.tmz_date.tm_mday = time.day;
	zipfi.tmz_date.tm_min = time.minute;
	zipfi.tmz_date.tm_mon = time.month - 1;
	zipfi.tmz_date.tm_sec = time.second;
	zipfi.tmz_date.tm_year = time.year;
	zipfi.dosDate = 0;
	zipfi.external_fa = 0;
	zipfi.internal_fa = 0;

	int ret = zipOpenNewFileInZip(zf, p_path.utf8().get_data(), &zipfi, NULL, 0, NULL, 0, NULL, Z_DEFLATED, Z_DEFAULT_COMPRESSION);
	return ret == ZIP_OK ? OK : FAILED;
}

Error ZIPPacker::write_file(Vector<uint8_t> p_data) {
	ERR_FAIL_COND_V_MSG(fa.is_null(), FAILED, "ZIPPacker must be opened before use.");

	return zipWriteInFileInZip(zf, p_data.ptr(), p_data.size()) == ZIP_OK ? OK : FAILED;
}

Error ZIPPacker::close_file() {
	ERR_FAIL_COND_V_MSG(fa.is_null(), FAILED, "ZIPPacker must be opened before use.");

	Error err = zipCloseFileInZip(zf) == ZIP_OK ? OK : FAILED;
	if (err == OK) {
		zf = NULL;
	}
	return err;
}

void ZIPPacker::_bind_methods() {
	ClassDB::bind_method(D_METHOD("open", "path", "append"), &ZIPPacker::open, DEFVAL(Variant(APPEND_CREATE)));
	ClassDB::bind_method(D_METHOD("start_file", "path"), &ZIPPacker::start_file);
	ClassDB::bind_method(D_METHOD("write_file", "data"), &ZIPPacker::write_file);
	ClassDB::bind_method(D_METHOD("close_file"), &ZIPPacker::close_file);
	ClassDB::bind_method(D_METHOD("close"), &ZIPPacker::close);

	BIND_ENUM_CONSTANT(APPEND_CREATE);
	BIND_ENUM_CONSTANT(APPEND_CREATEAFTER);
	BIND_ENUM_CONSTANT(APPEND_ADDINZIP);
}

ZIPPacker::ZIPPacker() {}

ZIPPacker::~ZIPPacker() {
	if (fa.is_valid()) {
		close();
	}
}