/*
 * Copyright 2013 Ole Loots <ole@monochrom.net>
 *
 * This file is part of NetSurf, http://www.netsurf-browser.org/
 *
 * NetSurf is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; version 2 of the License.
 *
 * NetSurf is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

#include <limits.h>
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <stdbool.h>
#include <assert.h>

#include "utils/log.h"
#include "utils/messages.h"
#include "netsurf/browser_window.h"
#include "desktop/search.h"
#include "netsurf/search.h"

#include "atari/gui.h"
#include "atari/rootwin.h"
#include "atari/misc.h"
#include "atari/toolbar.h"
#include "atari/search.h"
#include "atari/gemtk/gemtk.h"
#include "atari/res/netsurf.rsh"

extern struct gui_window * input_window;


static void nsatari_search_set_status(bool found, void *p);
static void nsatari_search_set_hourglass(bool active, void *p);
static void nsatari_search_add_recent(const char *string, void *p);
void nsatari_search_set_forward_state(bool active, void *p);
void nsatari_search_set_back_state(bool active, void *p);

static struct gui_search_table search_table = {
	nsatari_search_set_status,
	nsatari_search_set_hourglass,
	nsatari_search_add_recent,
	nsatari_search_set_forward_state,
	nsatari_search_set_back_state,
};

struct gui_search_table *atari_search_table = &search_table;



/**
 * Change the displayed search status.
 * \param found  search pattern matched in text
 * \param p the pointer sent to search_verify_new() / search_create_context()
 */
void nsatari_search_set_status(bool found, void *p)
{
	NSLOG(netsurf, INFO, "%p set status: %d\n", p, found);
	// TODO: maybe update GUI
}


/**
 * display hourglass while searching
 * \param active start/stop indicator
 * \param p the pointer sent to search_verify_new() / search_create_context()
 */
void nsatari_search_set_hourglass(bool active, void *p)
{
	SEARCH_FORM_SESSION s = (SEARCH_FORM_SESSION)p;
	NSLOG(netsurf, INFO, "active: %d, session: %p", active, p);
	if (active) {
		gui_window_set_pointer(s->g, GUI_POINTER_PROGRESS);
	} else {
		gui_window_set_pointer(s->g, GUI_POINTER_DEFAULT);
	}
}


/**
 * add search string to recent searches list
 * front is at liberty how to implement the bare notification
 * should normally store a strdup() of the string;
 * core gives no guarantee of the integrity of the const char *
 * \param string search pattern
 * \param p the pointer sent to search_verify_new() / search_create_context()
 */
void nsatari_search_add_recent(const char *string, void *p)
{
	NSLOG(netsurf, INFO, "%p add recent: %s\n", p, string);
}


/**
 * activate search forwards button in gui
 * \param active activate/inactivate
 * \param p the pointer sent to search_verify_new() / search_create_context()
 */
void nsatari_search_set_forward_state(bool active, void *p)
{
	struct gui_window *gw;
	OBJECT *toolbar;
	GRECT area;
	SEARCH_FORM_SESSION s = (SEARCH_FORM_SESSION)p;
	/* deactivate back cb */
	NSLOG(netsurf, INFO, "%p: set forward state: %d\n", p, active);

	gw = s->g;

	toolbar = toolbar_get_form(gw->root->toolbar);
	if (active) {
		toolbar[TOOLBAR_BT_SEARCH_FWD].ob_state &= ~OS_DISABLED;
	} else {
		toolbar[TOOLBAR_BT_SEARCH_FWD].ob_state |= OS_DISABLED;
	}
	window_get_grect(gw->root, BROWSER_AREA_SEARCH, &area);
	window_schedule_redraw_grect(gw->root, &area);
}


/**
 * activate search back button in gui
 * \param active activate/inactivate
 * \param p the pointer sent to search_verify_new() / search_create_context()
 */
void nsatari_search_set_back_state(bool active, void *p)
{
	struct gui_window *gw;
	OBJECT *toolbar;
	GRECT area;
	SEARCH_FORM_SESSION s = (SEARCH_FORM_SESSION)p;
	/* deactivate back cb */
	NSLOG(netsurf, INFO, "%p: set back state: %d\n", p, active);

	s->state.back_avail = active;
	gw = s->g;

	toolbar = toolbar_get_form(gw->root->toolbar);
	if (active) {
		toolbar[TOOLBAR_BT_SEARCH_BACK].ob_state &= ~OS_DISABLED;
	} else {
		toolbar[TOOLBAR_BT_SEARCH_BACK].ob_state |= OS_DISABLED;
	}
	window_get_grect(gw->root, BROWSER_AREA_SEARCH, &area);
	window_schedule_redraw_grect(gw->root, &area);
}


static int apply_form(OBJECT *obj, struct s_search_form_state *s)
{
	char * cstr;

	assert(s != NULL);

	s->flags = 0;

	if ((obj[TOOLBAR_CB_CASESENSE].ob_state & OS_SELECTED) != 0 ) {
		s->flags |= SEARCH_FLAG_CASE_SENSITIVE;
	}
	if ((obj[TOOLBAR_CB_SHOWALL].ob_state & OS_SELECTED) != 0 ) {
		s->flags |= SEARCH_FLAG_SHOWALL;
	}

	cstr = gemtk_obj_get_text(obj, TOOLBAR_TB_SRCH);
	snprintf(s->text, 32, "%s", cstr);
	return ( 0 );

}

static void set_text(OBJECT *obj, short idx, char * text, int len)
{
	char spare[255];

	if (len > 254) {
		len = 254;
	}
	if (text != NULL) {
		strncpy(spare, text, 254);
	} else {
		strcpy(spare, "");
	}

	set_string(obj, idx, spare);
}


void nsatari_search_restore_form( struct s_search_form_session *s, OBJECT *obj)
{
	if ((s->state.flags & SEARCH_FLAG_SHOWALL) != 0) {
		obj[TOOLBAR_CB_SHOWALL].ob_state |= OS_SELECTED;
	} else {
		obj[TOOLBAR_CB_SHOWALL].ob_state &= ~OS_SELECTED;
	}

	if ((s->state.flags & SEARCH_FLAG_CASE_SENSITIVE) != 0) {
		obj[TOOLBAR_CB_CASESENSE].ob_state |= OS_SELECTED;
	} else {
		obj[TOOLBAR_CB_CASESENSE].ob_state &= ~OS_SELECTED;
	}

	if (s->state.back_avail == false) {
		obj[TOOLBAR_BT_SEARCH_BACK].ob_state |= OS_DISABLED;
	} else {
		obj[TOOLBAR_BT_SEARCH_BACK].ob_state &= ~OS_DISABLED;
	}

	TEDINFO *t = ((TEDINFO *)get_obspec(obj, TOOLBAR_TB_SRCH));
	set_text(obj, TOOLBAR_TB_SRCH, s->state.text, t->te_txtlen);
}


void nsatari_search_session_destroy(struct s_search_form_session *s)
{
	if (s != NULL) {
		NSLOG(netsurf, INFO, "session %p", s);
		browser_window_search_clear(s->g->browser->bw);
		free(s);
	}
}


/** checks for search parameters changes */
static bool search_session_compare(struct s_search_form_session *s, OBJECT *obj)
{
	uint32_t flags_old;
	uint32_t flags_mask = SEARCH_FLAG_SHOWALL | SEARCH_FLAG_CASE_SENSITIVE;
	struct s_search_form_state cur;

	assert(s != NULL && obj != NULL);

	flags_old = s->state.flags;

	apply_form(obj, &cur);
	if ((cur.flags&flags_mask) != (flags_old&flags_mask)) {
		return( true );
	}

	char * cstr;
	cstr = gemtk_obj_get_text(obj, TOOLBAR_TB_SRCH);
	if (cstr != NULL) {
		if (strcmp(cstr, (char*)&s->state.text) != 0) {
			return (true);
		}
	}

	return( false );
}


void nsatari_search_perform(struct s_search_form_session *s, OBJECT *obj,
			    search_flags_t f)
{
	assert(s!=null);
	assert(input_window->browser->bw == s->g->browser->bw);

	if (search_session_compare(s, obj)) {
		browser_window_search_clear(s->g->browser->bw);
		apply_form(obj, &s->state);
	}

	/* get search direction manually: */
	if ( (f&SEARCH_FLAG_FORWARDS) != 0 ) {
		s->state.flags |= SEARCH_FLAG_FORWARDS;
	} else {
		s->state.flags &= (~SEARCH_FLAG_FORWARDS);
	}

	browser_window_search(s->g->browser->bw, s,
			      s->state.flags,
			      gemtk_obj_get_text(obj, TOOLBAR_TB_SRCH));
}


struct s_search_form_session * nsatari_search_session_create(OBJECT * obj,
							     struct gui_window *gw)
{
	struct s_search_form_session *sfs;

	sfs = calloc(1, sizeof(struct s_search_form_session));

	assert(obj);
	assert(sfs);

	sfs->g = gw;

	apply_form(obj, &sfs->state);

	browser_window_search_clear(gw->browser->bw);

	return(sfs);
}