/*
 * Copyright 2010 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 <windom.h>

#include "desktop/gui.h"
#include "desktop/netsurf.h"
#include "desktop/browser.h"
#include "desktop/mouse.h"
#include "desktop/textinput.h"
#include "desktop/hotlist.h"
#include "utils/log.h"
#include "utils/messages.h"

#include "atari/gui.h"
#include "atari/browser_win.h"
#include "atari/toolbar.h"
#include "atari/browser.h"
#include "atari/hotlist.h"
#include "atari/misc.h"
#include "atari/global_evnt.h"
#include "atari/browser_win.h"
#include "atari/res/netsurf.rsh"
#include "atari/search.h"
#include "atari/options.h"
#include "cflib.h"

extern const char * cfg_homepage_url;
extern struct gui_window *input_window;
extern OBJECT * 	h_gem_menu;
extern int mouse_click_time[3];
extern int mouse_hold_start[3];
extern browser_mouse_state bmstate;
extern short last_drag_x;
extern short last_drag_y;

/* Zero based resource tree ids: */
#define T_ABOUT 0
#define T_FILE MAINMENU_T_FILE - MAINMENU_T_FILE + 1
#define T_EDIT MAINMENU_T_EDIT - MAINMENU_T_FILE + 1
#define T_VIEW MAINMENU_T_VIEW - MAINMENU_T_FILE + 1
#define T_NAV	MAINMENU_T_NAVIGATE - MAINMENU_T_FILE + 1
#define T_UTIL MAINMENU_T_UTIL - MAINMENU_T_FILE + 1
#define T_HELP MAINMENU_T_NAVIGATE - MAINMENU_T_FILE + 1
/* Count of the above defines: */
#define NUM_MENU_TITLES 7
static char * menu_titles[NUM_MENU_TITLES] = {NULL};

/* Global event handlers: */
static void __CDECL global_evnt_apterm( WINDOW * win, short buff[8] );
static void __CDECL global_evnt_menu( WINDOW * win, short buff[8] );
static void __CDECL global_evnt_keybd( WINDOW * win, short buff[8], void * data);

/* Menu event handlers: */
static void __CDECL menu_about(WINDOW *win, int item, int title, void *data);

static char * get_accel(int mode, char * message, struct s_accelerator * accel);
static int parse_accel( char * message, struct s_accelerator * accel);


/* Menu event handlers: */
static void __CDECL menu_about(WINDOW *win, int item, int title, void *data)
{
	LOG(("%s", __FUNCTION__));
	char buf[PATH_MAX];
	strcpy((char*)&buf, "file://");
	strncat((char*)&buf, (char*)"./doc/README.TXT", PATH_MAX - (strlen("file://")+1) );
	browser_window_create((char*)&buf, 0, 0, true, false);
}

static void __CDECL menu_new_win(WINDOW *win, int item, int title, void *data)
{
	LOG(("%s", __FUNCTION__));
	browser_window_create(cfg_homepage_url, 0, 0, true, false);
}

static void __CDECL menu_open_url(WINDOW *win, int item, int title, void *data)
{
	struct gui_window * gw;
	struct browser_window * bw ;

	gw = input_window;
	if( gw == NULL ) {
		bw = browser_window_create("", 0, 0, true, false);
		gw = bw->window;
	}
	/* TODO: reset url? */
	LOG(("%s", __FUNCTION__));
}

static void __CDECL menu_open_file(WINDOW *win, int item, int title, void *data)
{
	LOG(("%s", __FUNCTION__));
}

static void __CDECL menu_close_win(WINDOW *win, int item, int title, void *data)
{
	LOG(("%s", __FUNCTION__));
	if( input_window == NULL )
		return;
	gui_window_destroy( input_window );
}

static void __CDECL menu_save_page(WINDOW *win, int item, int title, void *data)
{
	LOG(("%s", __FUNCTION__));
}

static void __CDECL menu_quit(WINDOW *win, int item, int title, void *data)
{
	short buff[8];
	memset( &buff, 0, sizeof(short)*8 );
	LOG(("%s", __FUNCTION__));
	global_evnt_apterm( NULL, buff  );
}

static void __CDECL menu_cut(WINDOW *win, int item, int title, void *data)
{
	if( input_window != NULL )
		browser_window_key_press( input_window->browser->bw, KEY_CUT_SELECTION);
}

static void __CDECL menu_copy(WINDOW *win, int item, int title, void *data)
{
	LOG(("%s", __FUNCTION__));
	if( input_window != NULL )
		browser_window_key_press( input_window->browser->bw, KEY_COPY_SELECTION);
}

static void __CDECL menu_paste(WINDOW *win, int item, int title, void *data)
{
	LOG(("%s", __FUNCTION__));
	if( input_window != NULL )
		browser_window_key_press( input_window->browser->bw, KEY_PASTE);
}

static void __CDECL menu_find(WINDOW *win, int item, int title, void *data)
{
	LOG(("%s", __FUNCTION__));
	if( input_window != NULL )
		open_browser_search( input_window );
}

static void __CDECL menu_choices(WINDOW *win, int item, int title, void *data)
{
	LOG(("%s", __FUNCTION__));
}

static void __CDECL menu_stop(WINDOW *win, int item, int title, void *data)
{
	LOG(("%s", __FUNCTION__));
	if( input_window == NULL )
		return;
	tb_stop_click( input_window );

}

static void __CDECL menu_reload(WINDOW *win, int item, int title, void *data)
{
	if( input_window == NULL)
		return;
	tb_reload_click( input_window );
	LOG(("%s", __FUNCTION__));
}

static void __CDECL menu_toolbars(WINDOW *win, int item, int title, void *data)
{
	LOG(("%s", __FUNCTION__));
}

static void __CDECL menu_savewin(WINDOW *win, int item, int title, void *data)
{
	LOG(("%s", __FUNCTION__));
}

static void __CDECL menu_debug_render(WINDOW *win, int item, int title, void *data)
{
	LOG(("%s", __FUNCTION__));
	html_redraw_debug = !html_redraw_debug;
	if( input_window != NULL ) {
		if ( input_window->browser != NULL && input_window->browser->bw != NULL) {
			LGRECT rect;
			browser_get_rect( input_window, BR_CONTENT, &rect );
			browser_window_reformat(input_window->browser->bw, false, rect.g_w, rect.g_h );
		}
	}
}

static void __CDECL menu_back(WINDOW *win, int item, int title, void *data)
{
	LOG(("%s", __FUNCTION__));
	if( input_window == NULL )
		return;
	tb_back_click( input_window );
}

static void __CDECL menu_forward(WINDOW *win, int item, int title, void *data)
{
	LOG(("%s", __FUNCTION__));
	if( input_window == NULL )
		return;
	tb_forward_click( input_window );
}

static void __CDECL menu_home(WINDOW *win, int item, int title, void *data)
{
	LOG(("%s", __FUNCTION__));
	if( input_window == NULL )
		return;
	tb_home_click( input_window );
}

static void __CDECL menu_lhistory(WINDOW *win, int item, int title, void *data)
{
	LOG(("%s", __FUNCTION__));
	if( input_window == NULL )
		return;
}

static void __CDECL menu_ghistory(WINDOW *win, int item, int title, void *data)
{
	LOG(("%s", __FUNCTION__));
	char buf[PATH_MAX];
	strcpy((char*)&buf, "file://");
	strncat((char*)&buf, option_url_file, PATH_MAX - (strlen("file://")+1) );
	browser_window_create((char*)&buf, 0, 0, true, false);
}

static void __CDECL menu_add_bookmark(WINDOW *win, int item, int title, void *data)
{
	LOG(("%s", __FUNCTION__));
	if( input_window ) {
		if( input_window->browser->bw->current_content != NULL ){
			atari_hotlist_add_page(
				nsurl_access(content_get_url( input_window->browser->bw->current_content)),
				NULL
			);
		}
	}
}

static void __CDECL menu_bookmarks(WINDOW *win, int item, int title, void *data)
{
	LOG(("%s", __FUNCTION__));
	hotlist_open();
}

static void __CDECL menu_vlog(WINDOW *win, int item, int title, void *data)
{
	LOG(("%s", __FUNCTION__));
	verbose_log = !verbose_log;
	MenuIcheck(NULL, MAINMENU_M_VLOG, (verbose_log) ? 1 : 0 );
}

static void __CDECL menu_help_content(WINDOW *win, int item, int title, void *data)
{
	LOG(("%s", __FUNCTION__));
}

static struct s_menu_item_evnt menu_evnt_tbl[] =
{
	{T_ABOUT,MAINMENU_M_ABOUT, "About", menu_about, {0,0,0}, NULL },
	{T_FILE, MAINMENU_M_NEWWIN, "NewWindow", menu_new_win, {0,0,0}, NULL},
	{T_FILE, MAINMENU_M_OPENURL, "OpenURL", menu_open_url, {0,0,0}, NULL},
	{T_FILE, MAINMENU_M_OPENFILE, "OpenFile", menu_open_file, {0,0,0}, NULL},
	{T_FILE, MAINMENU_M_CLOSEWIN, "CloseWindow", menu_close_win, {0,0,0}, NULL},
	{T_FILE, MAINMENU_M_SAVEPAGE, "Save", menu_save_page, {0,0,0}, NULL},
	{T_FILE, MAINMENU_M_QUIT, "Quit", menu_quit, {'Q',0,K_CTRL}, NULL},
	{T_EDIT, MAINMENU_M_CUT, "Cut", menu_cut, {0,0,0}, NULL},
	{T_EDIT, MAINMENU_M_COPY, "Copy", menu_copy, {0,0,0}, NULL},
	{T_EDIT, MAINMENU_M_PASTE, "Paste", menu_paste, {0,0,0}, NULL},
	{T_EDIT, MAINMENU_M_FIND, "FindText", menu_find, {0,0,0}, NULL},
	{T_VIEW, MAINMENU_M_RELOAD, "Reload", menu_reload, {0,NK_F5,0}, NULL},
	{T_VIEW, MAINMENU_M_TOOLBARS, "Toolbars", menu_toolbars, {0,0,0}, NULL},
	{T_VIEW, MAINMENU_M_SAVEWIN, "", menu_savewin, {0,0,0}, NULL},
	{T_VIEW, MAINMENU_M_DEBUG_RENDER, "", menu_debug_render, {0,0,0}, NULL},
	{T_VIEW, MAINMENU_M_STOP, "Stop", menu_stop, {0,0,0}, NULL},
	{T_NAV, MAINMENU_M_BACK, "Back", menu_back, {0,0,0}, NULL},
	{T_NAV, MAINMENU_M_FORWARD, "Forward", menu_forward, {0,0,0}, NULL},
	{T_NAV, MAINMENU_M_HOME, "Home", menu_home, {0,0,0}, NULL},
	{T_UTIL, MAINMENU_M_LHISTORY, "HistLocal", menu_lhistory, {0,0,0}, NULL},
	{T_UTIL, MAINMENU_M_GHISTORY, "HistGlobal", menu_ghistory, {0,0,0}, NULL},
	{T_UTIL, MAINMENU_M_ADD_BOOKMARK, "HotlistAdd", menu_add_bookmark, {0,0,0}, NULL},
	{T_UTIL, MAINMENU_M_BOOKMARKS, "HotlistShow", menu_bookmarks, {0,0,0}, NULL},
	{T_UTIL, MAINMENU_M_CHOICES, "Choices", menu_choices, {0,0,0}, NULL},
	{T_UTIL, MAINMENU_M_VLOG, "Verbose Log", menu_vlog, {0,0,0}, NULL},
	{T_HELP, MAINMENU_M_HELP_CONTENT, "Help", menu_help_content, {0,0,0}, NULL},
	{T_HELP, -1, "", NULL,{0,0,0}, NULL }
};

void __CDECL global_evnt_apterm( WINDOW * win, short buff[8] )
{
	int i = 0;
	LOG((""));
	netsurf_quit = true;
}

void __CDECL global_evnt_keybd( WINDOW * win, short buff[8], void * data)
{
	char sascii;
	long kstate = 0;
	long kcode = 0;
	unsigned short nkc = 0;
	unsigned short nks = 0;

	int i=0;
	bool done = false;
	struct gui_window * gw = input_window;
	struct gui_window * gw_tmp;
	if( gw == NULL )
		return;
	kstate = evnt.mkstate;
	kcode = evnt.keybd;
	nkc= gem_to_norm( (short)kstate, (short)kcode );
	nks = (nkc & 0xFF00);
	if( kstate & (K_LSHIFT|K_RSHIFT))
		kstate |= K_LSHIFT|K_RSHIFT;
	if( window_url_widget_has_focus( gw ) ) {
		/* make sure we report for the root window and report...: */
		done = tb_url_input( gw, nkc );
	}  else  {
		gw_tmp = window_list;
		/* search for active browser component: */
		while( gw_tmp != NULL && done == false ) {
			/* todo: only handle when input_window == ontop */
			if( window_widget_has_focus( (struct gui_window *)input_window,
										 BROWSER,(void*)gw_tmp->browser)) {
				done = browser_input( gw_tmp, nkc );
				break;
			} else {
				gw_tmp = gw_tmp->next;
			}
		}
	}
	sascii = keybd2ascii( evnt.keybd, K_LSHIFT);
	while( menu_evnt_tbl[i].rid != -1 && done == false) {
		if(menu_evnt_tbl[i].nsid[0] != 0 ) {
			if( kstate == menu_evnt_tbl[i].accel.mod && menu_evnt_tbl[i].accel.ascii != 0) {
				if( menu_evnt_tbl[i].accel.ascii == sascii) {
					menu_evnt_tbl[i].menu_func( NULL, menu_evnt_tbl[i].rid, MAINMENU, buff);
					done = true;
					break;
				}
			} else {
				/* the accel code hides in the keycode: */
				if( menu_evnt_tbl[i].accel.keycode != 0) {
					if( menu_evnt_tbl[i].accel.keycode == (nkc & 0xFF) &&
						kstate == menu_evnt_tbl[i].accel.mod &&
						menu_evnt_tbl[i].menu_func != NULL) {
							menu_evnt_tbl[i].menu_func( NULL,
								menu_evnt_tbl[i].rid,
								MAINMENU, buff
							);
							done = true;
							break;
					}
				}
			}
		}
		i++;
	}
}

/*
	mode = 0 -> return string ptr
				(build from accel definition in s_accelerator accel)
	mode = 1 -> return ptr to (untranslated) NS accel string, if any
*/
static char * get_accel(int mode, char * message, struct s_accelerator * accel )
{
	static char result[8];
	int pos = 0;
	char * r = NULL;
	char * s = NULL;
	memset( &result, 0, 8);
	if( (accel->ascii != 0 || accel->keycode != 0) && mode == 0)
		goto predefined_accel;
	s = strrchr(message, (int)' ' ) ;
	if(!s)
		goto error;
	if( strlen( s ) < 2)
		goto error;
	if(strlen(s) >= 2){
		s++;
		/* if string after space begins with lowercase ascii, its not an accelerator: */
		if( s[0] >= 0x061 && s[0] <= 0x07A  )
			goto error;
		if( strncmp(s, "URL", 3) == 0)
			goto error;
		if(mode == 1)
			return( s );
		/* detect obscure shift accelerator: */
		if(!strncmp("\xe2\x87\x91", s, 3)){
			s = s+3;
			strcpy((char*)&result, "");
			strncpy((char*)&result[1], s, 14);
			goto success;
		}
		strncpy((char*)&result, s, 15);
	}
goto success;

predefined_accel:
	if( (accel->mod & K_RSHIFT) || (accel->mod & K_RSHIFT) ) {
		result[pos]='';
		pos++;
	}
	if(accel->mod == K_CTRL ) {
		result[pos]='^';
		pos++;
	}
	if(accel->ascii != 0L ) {
		result[pos]= accel->ascii;
		pos++;
	}
	else if(accel->keycode != 0L ) {
		if( accel->keycode >= NK_F1 && accel->keycode <= NK_F10){
			result[pos++] = 'F';
			sprintf( (char*)&result[pos++], "%d", ((accel->keycode - NK_F1)+1) );
		} else {
			*((char*)0) = 1;
			switch( accel->keycode ) {
			/* TODO: Add further Keycodes & Symbols here, if needed. */
			default:
				goto error;
			}
		}
	}
success:
	r = (char*)&result;
error:
	return r;
}

/* create accelerator info and keep track of the line length */
static int parse_accel( char * message, struct s_accelerator * accel)
{
	int retval = strlen( message ) ;
	char * s = get_accel( 0, message, accel );
	if(!s && (accel->keycode == 0 && accel->ascii == 0 && accel->mod == 0) ) {
		return retval+4; /* add 3 "imaginary" accel characters + blank */
	}

	/* the accel is already defined: */
	if(accel->keycode != 0 ||accel->ascii != 0 || accel->mod != 0) {
		return( retval+1 );
	}

	if(s[0] == '' ) {  /* arrow up */
		accel->mod |= (K_LSHIFT|K_RSHIFT);
		s++;
	}
	else if(s[0] == 0x05E ) { /* ^ */
		accel->mod |= K_CTRL;
		s++;
	}

	/* expect  F1/F10 or something like A, B, C ... : */
	if(strlen(s) >= 2 && s[0] == 'F' ) {
		if(s[1] >= 49 && s[1] <= 57) {
			accel->keycode = NK_F1 +  (atoi(&s[1])-1);
		}
	}
	else {
		accel->ascii = s[0];
	}
	return( retval+1 ); /* add 1 blank */
}


void __CDECL global_evnt_menu( WINDOW * win, short buff[8] )
{
	int title = buff[ 3];
	INT16 x,y;
	char *str;
	struct gui_window * gw = window_list;
	int i=0;
	MenuTnormal( NULL, title, 1);
	while( gw ) {
		window_set_focus( gw, WIDGET_NONE, NULL  );
		gw = gw->next;
	}
	while( menu_evnt_tbl[i].rid != -1) {
		if( menu_evnt_tbl[i].rid ==  buff[4] ) {
			menu_evnt_tbl[i].menu_func(win, (int)buff[4], (int)buff[3], NULL );
			break;
		}
		i++;
	}
}


static void set_menu_title(int rid, const char * nsid)
{
	static int count=0;
	char * msgstr;
  msgstr = (char*)messages_get(nsid);
	if(msgstr != NULL) {
		if(msgstr[0] != 0) {
			assert(count < NUM_MENU_TITLES);
			menu_titles[count] = malloc( strlen(msgstr)+3 );
			strcpy((char*)menu_titles[count], " ");
			strncat((char*)menu_titles[count], msgstr, strlen(msgstr)+1 );
			strncat((char*)menu_titles[count], " ", 2 );
			MenuText(NULL, rid, menu_titles[count] );
			count++;
		}
	}
}


/* Bind global and menu events to event handler functions, create accelerators */
void bind_global_events( void )
{
	int i, len;
	int maxlen[NUM_MENU_TITLES]={0};
	char * m, *u, *t;
	char spare[128];
	memset( (void*)&evnt_data, 0, sizeof(struct s_evnt_data) );
	EvntDataAttach( NULL, WM_XKEYBD, global_evnt_keybd, (void*)&evnt_data );
	EvntAttach( NULL, AP_TERM, global_evnt_apterm );
	EvntAttach( NULL, MN_SELECTED,  global_evnt_menu );
	/* EvntDataAttach( NULL, WM_XM1, global_evnt_m1, NULL ); */

	/* TODO: maybe instant redraw after this is better! */
	set_menu_title( MAINMENU_T_FILE, "Page");
	set_menu_title( MAINMENU_T_EDIT, "Edit" );
	set_menu_title( MAINMENU_T_NAVIGATE, "Navigate");
	set_menu_title( MAINMENU_T_VIEW, "View");
	set_menu_title( MAINMENU_T_UTIL, "Utilities");
	set_menu_title( MAINMENU_T_HELP, "Help");

	/* measure items in titles : */
	i = 0;
	while( menu_evnt_tbl[i].rid != -1 ) {
		if( menu_evnt_tbl[i].nsid[0] != 0 ) {
			m = (char*)messages_get(menu_evnt_tbl[i].nsid);
			assert(strlen(m)<40);
			/* create accelerator: */
			len = parse_accel(m, &menu_evnt_tbl[i].accel);
			maxlen[menu_evnt_tbl[i].title]=MAX(len, maxlen[menu_evnt_tbl[i].title] );
			assert(maxlen[menu_evnt_tbl[i].title]<40);
		}
		i++;
	}
	for( i=0; i<NUM_MENU_TITLES; i++) {
		if ( maxlen[i] > 120 )
			maxlen[i] = 120;
	}
	/* set menu texts : */
	i = 0;
	while( menu_evnt_tbl[i].rid != -1 ) {
		if( menu_evnt_tbl[i].nsid[0] != 0 ) {
			m = (char*)messages_get(menu_evnt_tbl[i].nsid);
			if(m == NULL) {
				m = (char*)menu_evnt_tbl[i].nsid;
			}
			u = get_accel( 1, m, &menu_evnt_tbl[i].accel); /* get NS accel str */
			t = get_accel( 0, m, &menu_evnt_tbl[i].accel); /* get NS or custom accel */
			memset((char*)&spare, ' ', 121);
			spare[0]=' '; /*''; */
			spare[1]=' ';
			if( u != NULL && t != NULL ) {
				LOG(("Menu Item %s: found NS accelerator, ascii: %c, scancode: %x, mod: %x",
					m,
					menu_evnt_tbl[i].accel.ascii,
					menu_evnt_tbl[i].accel.keycode,
					menu_evnt_tbl[i].accel.mod
				));
				/* Accelerator is defined in menu string: */
				memcpy((char*)&spare[2], m, u-m-1);
				strncpy(&spare[maxlen[menu_evnt_tbl[i].title]-strlen(t)], t, 4);
			}
			else if( t != NULL && u == NULL) {
				LOG(("Menu Item %s: found RSC accelerator, ascii: %c, scancode: %x, mod: %x",
					m,
					menu_evnt_tbl[i].accel.ascii,
					menu_evnt_tbl[i].accel.keycode,
					menu_evnt_tbl[i].accel.mod
				));
				/* Accelerator is defined in struct: */
				memcpy( (char*)&spare[2], m, strlen(m) );
				strncpy(&spare[maxlen[menu_evnt_tbl[i].title]-strlen(t)], t, 4);
			}
			else {
				/* No accel defined: */
				strcpy((char*)&spare[2], m);
			}
			spare[ maxlen[menu_evnt_tbl[i].title]+1 ] = 0;
			menu_evnt_tbl[i].menustr = malloc(strlen((char*)&spare)+1);
			if( menu_evnt_tbl[i].menustr ) {
					strcpy(	menu_evnt_tbl[i].menustr , (char*)&spare );
			}
		}
		i++;
	}
	i=0;
	while( menu_evnt_tbl[i].rid != -1 ) {
		if( menu_evnt_tbl[i].menustr != NULL ) {
			MenuText( NULL, menu_evnt_tbl[i].rid, menu_evnt_tbl[i].menustr );
		}
		i++;
	}
	/* TODO: Fix pixel sizes for Titles and Items (for non-8px fonts) */
}

void unbind_global_events( void )
{
	int i;
	for( i=0; i<NUM_MENU_TITLES; i++){
		if( menu_titles[i]!= NULL)
			free( menu_titles[i] );
	}
	i=0;
	while(menu_evnt_tbl[i].rid != -1) {
		if( menu_evnt_tbl[i].menustr != NULL )
			free(menu_evnt_tbl[i].menustr);
		i++;
	}
}

