#include <grail-gesture.h>
#include <grail.h>
#include <string.h>
#include <stdio.h>
#include <unistd.h>
#include <fcntl.h>
#include <malloc.h>
#include <errno.h>

struct grail_impl {
	struct touch_dev dev;
	struct touch_engine engine;
	struct touch_frame frame;
	struct gesture_dev gedev;
	struct gesture_client client;
	touch_time_t last_scroll;
};

static void gh_handle(struct grail_impl *gh,
		      const struct touch_frame *frame,
		      touch_time_t time)
{
#if 0
	struct gesture_flag flag;
	struct grail_event ev;
	if (frame->ntouch == 1 || frame->ntouch == 2) {
		flag.type = GE_MOVE;
		flag.time = time;
		flag.state = GS_BEGIN;
		gedev_flag(&gh->dev, &flag);

		ev.type = GE_MOVE;
		ev.time = time;
		ev.prop[0] =
			frame->touch[0].prop[TP_POS_X] -
			gh->frame.touch[0].prop[TP_POS_X];
		ev.prop[1] =
			frame->touch[0].prop[TP_POS_Y] -
			gh->frame.touch[0].prop[TP_POS_Y];
		if (ev.prop[0] || ev.prop[1])
			gedev_event(&gh->dev, &ev);

		flag.time = time + 1;
		flag.state = GS_END;
		gedev_flag(&gh->dev, &flag);
	}
	if (frame->ntouch == 2) {
		flag.type = GE_VSCROLL;
		flag.time = time;
		flag.state = GS_BEGIN;
		gedev_flag(&gh->dev, &flag);

		ev.type = GE_VSCROLL;
		ev.time = time;
		ev.prop[0] =
			frame->touch[0].prop[TP_POS_Y] -
			gh->frame.touch[0].prop[TP_POS_Y];

		if (ev.prop[0])
			gedev_event(&gh->dev, &ev);

		if (time > gh->last_scroll + 100) {
			flag.time = time + 1;
			flag.state = GS_END;
			gedev_flag(&gh->dev, &flag);
			gh->last_scroll = time;
		}
	} else {
		flag.type = GE_VSCROLL;
		flag.time = time;
		flag.state = GS_CANCEL;
		gedev_flag(&gh->dev, &flag);
	}
	gedev_sync(&gh->dev);
	gh->frame = *frame;
#endif
}

static void tp_event(struct touch_engine *engine,
		     const struct input_event *ev)
{
	struct grail *ge = engine->priv;
	if (ge->event)
		ge->event(ge, ev);
}

static void tp_sync(struct touch_engine *engine,
		    const struct input_event *syn)
{
	struct grail *ge = engine->priv;
#if 0
	struct touch_frame *frame = &engine->frame;
	gh_handle(ge, frame, frame->time);
#endif
	if (ge->event)
		ge->event(ge, syn);
}

int grail_open(struct grail *ge, int fd)
{
	struct grail_impl *x;
	int ret;
	x = calloc(1, sizeof(*x));
	if (!x)
		return -ENOMEM;
	ret = touch_dev_open(&x->dev, fd);
	if (ret)
		goto error;
	touch_engine_init(&x->engine, tp_event, tp_sync, ge);
	touch_engine_attach(&x->engine, &x->dev);
	ge->impl = x;
	return 0;
 error:
	free(x);
	return ret;
}

int grail_idle(struct grail *ge, int fd, int ms)
{
	struct grail_impl *x = ge->impl;
	return touch_dev_idle(&x->dev, fd, ms);
}

int grail_pull(struct grail *ge, int fd)
{
	struct grail_impl *x = ge->impl;
	return touch_dev_pull(&x->dev, fd);
}

void grail_close(struct grail *ge, int fd)
{
	struct grail_impl *x = ge->impl;
	touch_engine_detach(&x->engine, &x->dev);
	touch_dev_close(&x->dev, fd);
	free(ge->impl);
	ge->impl = 0;
}

void grail_add_client(struct grail *ge, grail_clientid_t id,
		      const int *types, const int *priority, int ntypes)
{
	struct grail_impl *x = ge->impl;
	//gedev_attach_client(&x->dev, &x->client);
}

void grail_remove_client(struct grail *ge, grail_clientid_t id)
{
	struct grail_impl *x = ge->impl;
	//gedev_detach_client(&x->dev, &x->client);
}