#ifndef BABELTRACE_CTF_WRITER_EVENT_INTERNAL_H
#define BABELTRACE_CTF_WRITER_EVENT_INTERNAL_H

/*
 * Copyright 2013, 2014 Jérémie Galarneau <jeremie.galarneau@efficios.com>
 *
 * Author: Jérémie Galarneau <jeremie.galarneau@efficios.com>
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "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 permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 *
 * The Common Trace Format (CTF) Specification is available at
 * http://www.efficios.com/ctf
 */

#include <stdbool.h>

#include "common/assert.h"
#include "common/macros.h"
#include <babeltrace2-ctf-writer/field-types.h>
#include <babeltrace2-ctf-writer/fields.h>
#include <babeltrace2-ctf-writer/stream-class.h>
#include <babeltrace2-ctf-writer/stream.h>
#include "ctfser/ctfser.h"

#include "assert-pre.h"
#include "event-class.h"
#include "event.h"
#include "fields.h"
#include "field-wrapper.h"
#include "object.h"
#include "stream.h"
#include "validation.h"
#include "values.h"

struct bt_ctf_stream_class;
struct bt_ctf_stream_pos;
struct metadata_context;

struct bt_ctf_event_common {
	struct bt_ctf_object base;
	struct bt_ctf_event_class_common *class;
	struct bt_ctf_field_wrapper *header_field;
	struct bt_ctf_field_common *stream_event_context_field;
	struct bt_ctf_field_common *context_field;
	struct bt_ctf_field_common *payload_field;
	int frozen;
};

BT_HIDDEN
int _bt_ctf_event_common_validate(struct bt_ctf_event_common *event);

BT_HIDDEN
void _bt_ctf_event_common_set_is_frozen(struct bt_ctf_event_common *event,
		bool is_frozen);

#ifdef BT_DEV_MODE
# define bt_ctf_event_common_validate	_bt_ctf_event_common_validate
# define bt_ctf_event_common_set_is_frozen	_bt_ctf_event_common_set_is_frozen
#else
# define bt_ctf_event_common_validate(_event)			0
# define bt_ctf_event_common_set_is_frozen(_event, _is_frozen)
#endif

#define BT_CTF_ASSERT_PRE_EVENT_COMMON_HOT(_event, _name)			\
	BT_CTF_ASSERT_PRE_HOT((_event), (_name), ": event-addr=%p", (_event))

static inline
struct bt_ctf_event_class_common *bt_ctf_event_common_borrow_class(
		struct bt_ctf_event_common *event)
{
	BT_ASSERT_DBG(event);
	return event->class;
}

typedef void *(*create_field_func_type)(void *);
typedef void (*release_field_func_type)(void *);
typedef void *(*create_header_field_func_type)(void *, void *);
typedef void (*release_header_field_func_type)(void *, void *);

BT_HIDDEN
int bt_ctf_event_common_initialize(struct bt_ctf_event_common *event,
		struct bt_ctf_event_class_common *event_class,
		struct bt_ctf_clock_class *init_expected_clock_class,
		bool is_shared_with_parent, bt_ctf_object_release_func release_func,
		bt_ctf_validation_flag_copy_field_type_func field_type_copy_func,
		bool must_be_in_trace,
		int (*map_clock_classes_func)(struct bt_ctf_stream_class_common *stream_class,
			struct bt_ctf_field_type_common *packet_context_field_type,
			struct bt_ctf_field_type_common *event_header_field_type),
		create_field_func_type create_field_func,
		release_field_func_type release_field_func,
		create_header_field_func_type create_header_field_func,
		release_header_field_func_type release_header_field_func);

BT_HIDDEN
int bt_ctf_event_common_set_payload(struct bt_ctf_event *event,
		struct bt_ctf_field *payload);

static inline
struct bt_ctf_field_common *bt_ctf_event_common_borrow_payload(
		struct bt_ctf_event_common *event)
{
	struct bt_ctf_field_common *payload = NULL;

	BT_CTF_ASSERT_PRE_NON_NULL(event, "Event");

	if (!event->payload_field) {
		BT_LOGT("Event has no current payload field: addr=%p, "
			"event-class-name=\"%s\", event-class-id=%" PRId64,
			event, bt_ctf_event_class_common_get_name(event->class),
			bt_ctf_event_class_common_get_id(event->class));
		goto end;
	}

	payload = event->payload_field;

end:
	return payload;
}

static inline
struct bt_ctf_field_common *bt_ctf_event_common_borrow_header(
		struct bt_ctf_event_common *event)
{
	struct bt_ctf_field_common *header = NULL;

	BT_CTF_ASSERT_PRE_NON_NULL(event, "Event");

	if (!event->header_field) {
		BT_LOGT("Event has no current header field: addr=%p, "
			"event-class-name=\"%s\", event-class-id=%" PRId64,
			event, bt_ctf_event_class_common_get_name(event->class),
			bt_ctf_event_class_common_get_id(event->class));
		goto end;
	}

	header = event->header_field->field;

end:
	return header;
}

static inline
struct bt_ctf_field_common *bt_ctf_event_common_borrow_context(
		struct bt_ctf_event_common *event)
{
	struct bt_ctf_field_common *context = NULL;

	BT_CTF_ASSERT_PRE_NON_NULL(event, "Event");

	if (!event->context_field) {
		BT_LOGT("Event has no current context field: addr=%p, "
			"event-class-name=\"%s\", event-class-id=%" PRId64,
			event, bt_ctf_event_class_common_get_name(event->class),
			bt_ctf_event_class_common_get_id(event->class));
		goto end;
	}

	context = event->context_field;

end:
	return context;
}

static inline
struct bt_ctf_field_common *bt_ctf_event_common_borrow_stream_event_context(
		struct bt_ctf_event_common *event)
{
	struct bt_ctf_field_common *stream_event_context = NULL;

	BT_CTF_ASSERT_PRE_NON_NULL(event, "Event");

	if (!event->stream_event_context_field) {
		BT_LOGT("Event has no current stream event context field: addr=%p, "
			"event-class-name=\"%s\", event-class-id=%" PRId64,
			event, bt_ctf_event_class_common_get_name(event->class),
			bt_ctf_event_class_common_get_id(event->class));
		goto end;
	}

	stream_event_context = event->stream_event_context_field;

end:
	return stream_event_context;
}

static inline
void bt_ctf_event_common_finalize(struct bt_ctf_object *obj,
		void (*field_release_func)(void *),
		void (*header_field_release_func)(void *, struct bt_ctf_event_common *))
{
	struct bt_ctf_event_common *event = (void *) obj;

	BT_LOGD("Destroying event: addr=%p, "
		"event-class-name=\"%s\", event-class-id=%" PRId64,
		event,
		event->class ? bt_ctf_event_class_common_get_name(event->class) : NULL,
		event->class ? bt_ctf_event_class_common_get_id(event->class) : INT64_C(-1));

	if (event->header_field) {
		BT_LOGD_STR("Releasing event's header field.");
		header_field_release_func(event->header_field, event);
	}

	if (event->stream_event_context_field) {
		BT_LOGD_STR("Releasing event's stream event context field.");
		field_release_func(event->stream_event_context_field);
	}

	if (event->context_field) {
		BT_LOGD_STR("Releasing event's context field.");
		field_release_func(event->context_field);
	}

	if (event->payload_field) {
		BT_LOGD_STR("Releasing event's payload field.");
		field_release_func(event->payload_field);
	}

	/*
	 * Leave this after calling header_field_release_func() because
	 * this function receives the event object and could need its
	 * class to perform some cleanup.
	 */
	if (!event->base.parent) {
		/*
		 * Event was keeping a reference to its class since it shared no
		 * common ancestor with it to guarantee they would both have the
		 * same lifetime.
		 */
		bt_ctf_object_put_ref(event->class);
	}
}

struct bt_ctf_event {
	struct bt_ctf_event_common common;
};

struct bt_ctf_event_class {
	struct bt_ctf_event_class_common common;
};

BT_HIDDEN
int bt_ctf_event_class_serialize(struct bt_ctf_event_class *event_class,
		struct metadata_context *context);

BT_HIDDEN
int bt_ctf_event_serialize(struct bt_ctf_event *event,
		struct bt_ctfser *pos,
		enum bt_ctf_byte_order native_byte_order);

static inline
struct bt_ctf_stream_class *bt_ctf_event_class_borrow_stream_class(
		struct bt_ctf_event_class *event_class)
{
	return BT_CTF_FROM_COMMON(bt_ctf_event_class_common_borrow_stream_class(
		BT_CTF_TO_COMMON(event_class)));
}

#endif /* BABELTRACE_CTF_WRITER_EVENT_INTERNAL_H */