/*
 * Copyright © 2020 Red Hat, Inc.
 *
 * 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 (including the next
 * paragraph) 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.
 */

#include "config.h"

#pragma once

#include "libei.h"
#include "libeis.h"

#include "util-mem.h"

/**
 * An enum to define basic server behavior in peck_dispatch_eis().
 * Where a flag is **not** set for any specific behaviour, that event will
 * remain on the event queue after peck_dispatch_eis(). For example, a
 * caller setting @ref PECK_EIS_BEHAVIOR_ACCEPT_CLIENT will see
 * the device added event as first event in the queue.
 */
enum peck_eis_behavior {
	/**
	 * Behavior of EIS is implemented in the test case.
	 */
	PECK_EIS_BEHAVIOR_NONE,
	/**
	 * Accept all client connection requests and device additions
	 * **and** resume any device immediately after add.
	 */
	PECK_EIS_BEHAVIOR_ACCEPT_ALL,
	/**
	 * Reject any client connection requests or device additions.
	 */
	PECK_EIS_BEHAVIOR_REJECT_ALL,

	/**
	 * Process connect/disconnect requests from the client.
	 */
	PECK_EIS_BEHAVIOR_ACCEPT_CLIENT,
	PECK_EIS_BEHAVIOR_REJECT_CLIENT,

	/**
	 * Process add/remove requests from the client.
	 */
	PECK_EIS_BEHAVIOR_HANDLE_DEVICE, /* Implied by the various ones below */
	PECK_EIS_BEHAVIOR_ACCEPT_DEVICE,
	PECK_EIS_BEHAVIOR_REJECT_DEVICE,

	PECK_EIS_BEHAVIOR_ACCEPT_POINTER,
	PECK_EIS_BEHAVIOR_DROP_POINTER,

	PECK_EIS_BEHAVIOR_ACCEPT_POINTER_ABSOLUTE,
	PECK_EIS_BEHAVIOR_DROP_POINTER_ABSOLUTE,

	PECK_EIS_BEHAVIOR_ACCEPT_KEYBOARD,
	PECK_EIS_BEHAVIOR_DROP_KEYBOARD,

	PECK_EIS_BEHAVIOR_ACCEPT_TOUCH,
	PECK_EIS_BEHAVIOR_DROP_TOUCH,

	PECK_EIS_BEHAVIOR_RESUME_DEVICE,
	PECK_EIS_BEHAVIOR_SUSPEND_DEVICE,
};

enum peck_ei_behavior {
	PECK_EI_BEHAVIOR_NONE,
	/* the default - handle the Connect event */
	PECK_EI_BEHAVIOR_AUTOCONNNECT,
	/* handle Connect/Added/Resumed events, i.e. anything until
	 * the first real device event */
	PECK_EI_BEHAVIOR_AUTODEVICES,
	PECK_EI_BEHAVIOR_HANDLE_ADDED,
	PECK_EI_BEHAVIOR_HANDLE_ADDED_POINTER,
	PECK_EI_BEHAVIOR_HANDLE_ADDED_POINTER_ABSOLUTE,
	PECK_EI_BEHAVIOR_HANDLE_ADDED_KEYBOARD,
	PECK_EI_BEHAVIOR_HANDLE_ADDED_TOUCH,

	PECK_EI_BEHAVIOR_HANDLE_RESUMED,
	PECK_EI_BEHAVIOR_HANDLE_SUSPENDED,
};

struct peck;

struct peck *
peck_new(void);

void
peck_enable_eis_behavior(struct peck *peck, enum peck_eis_behavior behavior);

void
peck_enable_ei_behavior(struct peck *peck, enum peck_ei_behavior behavior);

struct ei *
peck_get_ei(struct peck *peck);

struct eis *
peck_get_eis(struct peck *peck);

/**
 * Dispatch all events according to the currently defined behavior.
 * When this function returns false, the connection is in a "stable" state
 * and futher calls to this function will not change that state. This stable
 * state may mean either there are no events or events pending to be
 * processed by the caller.
 *
 * @return true if at least one event was processed according to the current
 * behavior
 */
#define peck_dispatch_eis(_p) \
	_peck_dispatch_eis(_p, __LINE__)
bool
_peck_dispatch_eis(struct peck *peck, int lineno);

/**
 * Dispatch all events according to the currently defined behavior.
 * When this function returns false, the connection is in a "stable" state
 * and futher calls to this function will not change that state. This stable
 * state may mean either there are no events or events pending to be
 * processed by the caller.
 *
 * @return true if at least one behavior was processes according to the
 * current behavior
 */
#define peck_dispatch_ei(_p) \
	_peck_dispatch_ei(_p, __LINE__)
bool
_peck_dispatch_ei(struct peck *peck, int lineno);

struct peck *
peck_unref(struct peck *peck);

DEFINE_TRIVIAL_CLEANUP_FUNC(struct peck*, peck_unref);
#define _cleanup_peck_ _cleanup_(peck_unrefp)

/**
 * Dispatch both EIS and EI until a stable state is reached, i.e. until
 * either there are no events pending or until either (or both) have events
 * pending that are not processed by the current behaviors.
 */
void
_peck_dispatch_until_stable(struct peck *peck, int lineno);

#define peck_dispatch_until_stable(_p) \
	_peck_dispatch_until_stable((_p), __LINE__)

/**
 * Discard all pending events.
 */
void
peck_drain_eis(struct eis *eis);

/**
 * Discard all pending events.
 */
void
peck_drain_ei(struct ei *ei);

void
peck_assert_no_eis_events(struct eis *eis);

void
peck_assert_no_ei_events(struct ei *ei);

#define peck_ei_next_event(_ei, _type) \
	_peck_ei_next_event(_ei, _type, __LINE__)
struct ei_event *
_peck_ei_next_event(struct ei *ei, enum ei_event_type type, int lineno);

#define peck_eis_next_event(_eis, _type) \
	_peck_eis_next_event(_eis, _type, __LINE__)
struct eis_event *
_peck_eis_next_event(struct eis *eis, enum eis_event_type type, int lineno);

#define peck_eis_touch_down(_eis, _x, _y) \
	_peck_eis_touch_event(_eis, EIS_EVENT_TOUCH_DOWN, _x, _y,  __LINE__)
#define peck_eis_touch_motion(_eis, _x, _y) \
	_peck_eis_touch_event(_eis, EIS_EVENT_TOUCH_MOTION, _x, _y,  __LINE__)
#define peck_eis_touch_up(_eis) \
	_peck_eis_next_event(_eis, EIS_EVENT_TOUCH_UP, __LINE__)

struct eis_event *
_peck_eis_touch_event(struct eis *eis, enum eis_event_type type,
		      double x, double y, int lineno);

const char *
peck_ei_event_name(struct ei_event *e);

const char *
peck_eis_event_name(struct eis_event *e);

const char *
peck_ei_event_type_name(enum ei_event_type type);

const char *
peck_eis_event_type_name(enum eis_event_type type);

/* Define a bunch of _cleanup_foo_ macros for a struct foo */
DEFINE_TRIVIAL_CLEANUP_FUNC(struct ei *, ei_unref);
#define _cleanup_ei_ _cleanup_(ei_unrefp)
DEFINE_TRIVIAL_CLEANUP_FUNC(struct ei_event *, ei_event_unref);
#define _cleanup_ei_event_ _cleanup_(ei_event_unrefp)
DEFINE_TRIVIAL_CLEANUP_FUNC(struct ei_device *, ei_device_unref);
#define _cleanup_ei_device_ _cleanup_(ei_device_unrefp)
DEFINE_TRIVIAL_CLEANUP_FUNC(struct ei_touch *, ei_touch_unref);
#define _cleanup_ei_touch_ _cleanup_(ei_touch_unrefp)
DEFINE_TRIVIAL_CLEANUP_FUNC(struct ei_keymap *, ei_keymap_unref);
#define _cleanup_ei_keymap_ _cleanup_(ei_keymap_unrefp)

DEFINE_TRIVIAL_CLEANUP_FUNC(struct eis *, eis_unref);
#define _cleanup_eis_ _cleanup_(eis_unrefp)
DEFINE_TRIVIAL_CLEANUP_FUNC(struct eis_client *, eis_client_unref);
#define _cleanup_eis_client_ _cleanup_(eis_client_unrefp)
DEFINE_TRIVIAL_CLEANUP_FUNC(struct eis_event *, eis_event_unref);
#define _cleanup_eis_event_ _cleanup_(eis_event_unrefp)
DEFINE_TRIVIAL_CLEANUP_FUNC(struct eis_device *, eis_device_unref);
#define _cleanup_eis_device_ _cleanup_(eis_device_unrefp)

/* Macros intended just for readability to make it more obvious which part
   of a test handles server vs client */
#define with_server(peck_) for (struct eis *eis = peck_get_eis(peck_); eis; eis = NULL)
#define with_client(peck_) for (struct ei *ei = peck_get_ei(peck_); ei; ei = NULL)

#define peck_errno_check(_rc) {		\
	const int xrc = (_rc);		\
	if (xrc != 0)			\
		munit_errorf("errno is not 0: %d - %s\n", -xrc, strerror(-xrc)); \
	}