/*
   +----------------------------------------------------------------------+
   | Copyright © The PHP Group and Contributors.                          |
   +----------------------------------------------------------------------+
   | This source file is subject to the Modified BSD License that is      |
   | bundled with this package in the file LICENSE, and is available      |
   | through the World Wide Web at <https://www.php.net/license/>.        |
   |                                                                      |
   | SPDX-License-Identifier: BSD-3-Clause                                |
   +----------------------------------------------------------------------+
   | Authors: Gustavo Lopes <cataphract@php.net>                          |
   +----------------------------------------------------------------------+
*/

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include "../intl_cppshims.h"

#include <unicode/calendar.h>
#include <unicode/gregocal.h>

extern "C" {
#define USE_TIMEZONE_POINTER 1
#include "../timezone/timezone_class.h"
#define USE_CALENDAR_POINTER 1
#include "calendar_class.h"
#include "calendar_arginfo.h"
#include <zend_exceptions.h>
#include <assert.h>
}

using icu::GregorianCalendar;
using icu::Locale;

/* {{{ Global variables */
zend_class_entry *Calendar_ce_ptr;
zend_class_entry *GregorianCalendar_ce_ptr;
zend_object_handlers Calendar_handlers;
/* }}} */

U_CFUNC	void calendar_object_create(zval *object,
									Calendar *calendar)
{
	UClassID classId = calendar->getDynamicClassID();
	zend_class_entry *ce;

	//if (dynamic_cast<GregorianCalendar*>(calendar) != NULL) {
	if (classId == GregorianCalendar::getStaticClassID()) {
		ce = GregorianCalendar_ce_ptr;
	} else {
		ce = Calendar_ce_ptr;
	}

	object_init_ex(object, ce);
	calendar_object_construct(object, calendar);
}

U_CFUNC Calendar *calendar_fetch_native_calendar(zend_object *object)
{
	Calendar_object *co = php_intl_calendar_fetch_object(object);

	return co->ucal;
}

U_CFUNC void calendar_object_construct(zval *object,
									   Calendar *calendar)
{
	Calendar_object *co;

	CALENDAR_METHOD_FETCH_OBJECT_NO_CHECK; //populate to from object
	assert(co->ucal == NULL);
	co->ucal = calendar;
}

/* {{{ clone handler for Calendar */
static zend_object *Calendar_clone_obj(zend_object *object)
{
	const Calendar_object *co_orig = php_intl_calendar_fetch_object(object);
	zend_object     *ret_val = Calendar_ce_ptr->create_object(object->ce);
	Calendar_object  *co_new = php_intl_calendar_fetch_object(ret_val);

	zend_objects_clone_members(&co_new->zo, &co_orig->zo);

	if (co_orig->ucal != NULL) {
		Calendar	*newCalendar;

		newCalendar = co_orig->ucal->clone();
		if (UNEXPECTED(!newCalendar)) {
			zend_throw_error(NULL, "Failed to clone IntlCalendar");
		} else {
			co_new->ucal = newCalendar;
		}
	} else {
		zend_throw_error(NULL, "Cannot clone uninitialized IntlCalendar");
	}

	return ret_val;
}
/* }}} */

static const struct {
	UCalendarDateFields field;
	const char			*name;
} debug_info_fields[] = {
	{UCAL_ERA,					"era"},
	{UCAL_YEAR,					"year"},
	{UCAL_MONTH,				"month"},
	{UCAL_WEEK_OF_YEAR,			"week of year"},
	{UCAL_WEEK_OF_MONTH,		"week of month"},
	{UCAL_DAY_OF_YEAR,			"day of year"},
	{UCAL_DAY_OF_MONTH,			"day of month"},
	{UCAL_DAY_OF_WEEK,			"day of week"},
	{UCAL_DAY_OF_WEEK_IN_MONTH,	"day of week in month"},
	{UCAL_AM_PM,				"AM/PM"},
	{UCAL_HOUR,					"hour"},
	{UCAL_HOUR_OF_DAY,			"hour of day"},
	{UCAL_MINUTE,				"minute"},
	{UCAL_SECOND,				"second"},
	{UCAL_MILLISECOND,			"millisecond"},
	{UCAL_ZONE_OFFSET,			"zone offset"},
	{UCAL_DST_OFFSET,			"DST offset"},
	{UCAL_YEAR_WOY,				"year for week of year"},
	{UCAL_DOW_LOCAL,			"localized day of week"},
	{UCAL_EXTENDED_YEAR,		"extended year"},
	{UCAL_JULIAN_DAY,			"julian day"},
	{UCAL_MILLISECONDS_IN_DAY,	"milliseconds in day"},
	{UCAL_IS_LEAP_MONTH,		"is leap month"},
};

/* {{{ get_debug_info handler for Calendar */
static HashTable *Calendar_get_debug_info(zend_object *object, int *is_temp)
{
	zval			zv,
					zfields;
	Calendar_object	*co;
	const Calendar	*cal;
	HashTable		*debug_info;

	*is_temp = 1;

	debug_info = zend_new_array(8);

	co  = php_intl_calendar_fetch_object(object);
	cal = co->ucal;

	if (cal == NULL) {
		ZVAL_FALSE(&zv);
		zend_hash_str_update(debug_info, "valid", sizeof("valid") - 1, &zv);
		return debug_info;
	}
	ZVAL_TRUE(&zv);
	zend_hash_str_update(debug_info, "valid", sizeof("valid") - 1, &zv);

	ZVAL_STRING(&zv, const_cast<char*>(cal->getType()));
	zend_hash_str_update(debug_info, "type", sizeof("type") - 1, &zv);
	{
		zval		   ztz,
					   ztz_debug;
		int			   is_tmp;
		HashTable	   *debug_info_tz;

		timezone_object_construct(&cal->getTimeZone(), &ztz , 0);
		debug_info_tz = Z_OBJ_HANDLER(ztz, get_debug_info)(Z_OBJ(ztz), &is_tmp);
		assert(is_tmp == 1);

		array_init(&ztz_debug);
		zend_hash_copy(Z_ARRVAL(ztz_debug), debug_info_tz, zval_add_ref);
		zend_hash_destroy(debug_info_tz);
		FREE_HASHTABLE(debug_info_tz);

		zend_hash_str_update(debug_info, "timeZone", sizeof("timeZone") - 1, &ztz_debug);
	}

	{
		UErrorCode	uec		= U_ZERO_ERROR;
		Locale		locale	= cal->getLocale(ULOC_VALID_LOCALE, uec);
		if (U_SUCCESS(uec)) {
			ZVAL_STRING(&zv, const_cast<char*>(locale.getName()));
			zend_hash_str_update(debug_info, "locale", sizeof("locale") - 1, &zv);
		} else {
			ZVAL_STRING(&zv, const_cast<char*>(u_errorName(uec)));
			zend_hash_str_update(debug_info, "locale", sizeof("locale") - 1, &zv);
		}
	}

	array_init_size(&zfields, UCAL_FIELD_COUNT);

	for (int i = 0;
			 i < sizeof(debug_info_fields) / sizeof(*debug_info_fields);
			 i++) {
		UErrorCode	uec		= U_ZERO_ERROR;
		const char	*name	= debug_info_fields[i].name;
		const int32_t	res		= cal->get(debug_info_fields[i].field, uec);
		if (U_SUCCESS(uec)) {
			add_assoc_long(&zfields, name, (zend_long)res);
		} else {
			add_assoc_string(&zfields, name, const_cast<char*>(u_errorName(uec)));
		}
	}

	zend_hash_str_update(debug_info, "fields", sizeof("fields") - 1, &zfields);

	return debug_info;
}
/* }}} */

/* {{{ void calendar_object_init(Calendar_object* to)
 * Initialize internals of Calendar_object not specific to zend standard objects.
 */
static void calendar_object_init(Calendar_object *co)
{
	intl_error_init(CALENDAR_ERROR_P(co));
	co->ucal = NULL;
}
/* }}} */

/* {{{ Calendar_objects_free */
static void Calendar_objects_free(zend_object *object)
{
	Calendar_object* co = php_intl_calendar_fetch_object(object);

	if (co->ucal) {
		delete co->ucal;
		co->ucal = NULL;
	}
	intl_error_reset(CALENDAR_ERROR_P(co));

	zend_object_std_dtor(&co->zo);
}
/* }}} */

/* {{{ Calendar_object_create */
static zend_object *Calendar_object_create(zend_class_entry *ce)
{
	Calendar_object* intern = (Calendar_object*)zend_object_alloc(sizeof(Calendar_object), ce);

	zend_object_std_init(&intern->zo, ce);
    object_properties_init(&intern->zo, ce);
	calendar_object_init(intern);

	return &intern->zo;
}
/* }}} */

/* {{{ calendar_register_IntlCalendar_class
 * Initialize 'IntlCalendar' class
 */
void calendar_register_IntlCalendar_class(void)
{
	/* Create and register 'IntlCalendar' class. */
	Calendar_ce_ptr = register_class_IntlCalendar();
	Calendar_ce_ptr->default_object_handlers = &Calendar_handlers;
	Calendar_ce_ptr->create_object = Calendar_object_create;

	memcpy( &Calendar_handlers, &std_object_handlers,
		sizeof Calendar_handlers);
	Calendar_handlers.offset = offsetof(Calendar_object, zo);
	Calendar_handlers.clone_obj = Calendar_clone_obj;
	Calendar_handlers.get_debug_info = Calendar_get_debug_info;
	Calendar_handlers.free_obj = Calendar_objects_free;

	/* Create and register 'IntlGregorianCalendar' class. */
	GregorianCalendar_ce_ptr = register_class_IntlGregorianCalendar(Calendar_ce_ptr);
}
/* }}} */
