/* $Id$ */

#include "stdafx.h"
#include "openttd.h"
#include "debug.h"
#include "functions.h"
#include "strings.h"
#include "table/strings.h"
#include "window.h"
#include "gui.h"
#include "station.h"
#include "gfx.h"
#include "player.h"
#include "town.h"
#include "command.h"
#include "variables.h"
#include "vehicle_gui.h"

static void StationsWndShowStationRating(int x, int y, int type, uint acceptance, int rating)
{
	static const byte _rating_colors[NUM_CARGO] = {152,32,15,174,208,194,191,55,184,10,191,48};
	int color = _rating_colors[type];
	uint w;

	if (acceptance > 575)
		acceptance = 575;

	acceptance = (acceptance + 7) >> 3;

	/* draw cargo */
	if ( (w=acceptance>>3) != 0) {
		GfxFillRect(x, y, x+w-1, y+6, color);
		x += w;
	}

	if ( (w=acceptance&7) != 0) {
		if (w==7) w--;
		GfxFillRect(x, y+(w-1), x, y+6, color);
	}

	x -= (acceptance>>3);

	DrawString(x+1, y, _cargoc.names_short[type], 0x10);

	/* draw green/red ratings bar */
	GfxFillRect(x+1, y+8, x+7, y+8, 0xB8);

	rating = (rating >> 5);

	if (rating != 0) {
		GfxFillRect(x+1, y+8, x+rating, y+8, 0xD0);
	}
}

static uint16 _num_station_sort[MAX_PLAYERS];

static char _bufcache[64];
static uint16 _last_station_idx;

static int CDECL StationNameSorter(const void *a, const void *b)
{
	char buf1[64];
	int32 argv[1];
	const SortStruct *cmp1 = (const SortStruct*)a;
	const SortStruct *cmp2 = (const SortStruct*)b;

	argv[0] = cmp1->index;
	GetStringWithArgs(buf1, STR_STATION, argv);

	if ( cmp2->index != _last_station_idx) {
		_last_station_idx = cmp2->index;
		argv[0] = cmp2->index;
		GetStringWithArgs(_bufcache, STR_STATION, argv);
	}

	return strcmp(buf1, _bufcache); // sort by name
}

static void GlobalSortStationList(void)
{
	const Station *st;
	uint32 n = 0;
	uint16 *i;

	// reset #-of stations to 0 because ++ is used for value-assignment
	memset(_num_station_sort, 0, sizeof(_num_station_sort));

	/* Create array for sorting */
	_station_sort = realloc(_station_sort, GetStationPoolSize() * sizeof(_station_sort[0]));
	if (_station_sort == NULL)
		error("Could not allocate memory for the station-sorting-list");

	FOR_ALL_STATIONS(st) {
		if(st->xy && st->owner != OWNER_NONE) {
			_station_sort[n].index = st->index;
			_station_sort[n++].owner = st->owner;
			_num_station_sort[st->owner]++; // add number of stations of player
		}
	}

	// create cumulative station-ownership
	// stations are stored as a cummulative index, eg 25, 41, 43. This means
	// Player0: 25; Player1: (41-25) 16; Player2: (43-41) 2
	for (i = &_num_station_sort[1]; i != endof(_num_station_sort); i++) {*i += *(i-1);}

	qsort(_station_sort, n, sizeof(_station_sort[0]), GeneralOwnerSorter); // sort by owner

	// since indexes are messed up after adding/removing a station, mark all lists dirty
	memset(_station_sort_dirty, true, sizeof(_station_sort_dirty));
	_global_station_sort_dirty = false;

	DEBUG(misc, 1) ("Resorting global station list...");
}

static void MakeSortedStationList(byte owner)
{
	SortStruct *firstelement;
	uint32 n = 0;

	if (owner == 0) { // first element starts at 0th element and has n elements as described above
		firstelement = &_station_sort[0];
		n = _num_station_sort[0];
	} else { // nth element starts at the end of the previous one, and has n elements as described above
		firstelement = &_station_sort[_num_station_sort[owner - 1]];
		n = _num_station_sort[owner] - _num_station_sort[owner - 1];
	}

	_last_station_idx = 0; // used for "cache" in namesorting
	qsort(firstelement, n, sizeof(_station_sort[0]), StationNameSorter); // sort by name

	_station_sort_dirty[owner] = false;

	DEBUG(misc, 1) ("Resorting Stations list player %d...", owner+1);
}

static void PlayerStationsWndProc(Window *w, WindowEvent *e)
{
	switch(e->event) {
	case WE_PAINT: {
		uint32 i;
		const byte window_number = (byte)w->window_number;

		// resort station window if stations have been added/removed
		if (_global_station_sort_dirty)
			GlobalSortStationList();

		if (_station_sort_dirty[window_number]) { // resort in case of a station rename.
			MakeSortedStationList(window_number);
		}

		// stations are stored as a cummulative index, eg 25, 41, 43. This means
		// Player0: 25; Player1: (41-25) 16; Player2: (43-41) 2 stations
		i = (window_number == 0) ? 0 : _num_station_sort[window_number-1];
		SetVScrollCount(w, _num_station_sort[window_number] - i);

		/* draw widgets, with player's name in the caption */
		{
			Player *p = GetPlayer(window_number);
			SetDParam(0, p->name_1);
			SetDParam(1, p->name_2);
			SetDParam(2, w->vscroll.count);
			DrawWindowWidgets(w);
		}

		{
			byte p = 0;
			Station *st;
			int x,xb = 2;
			int y = 16; // offset from top of widget
			int j;

			if (w->vscroll.count == 0) { // player has no stations
				DrawString(xb, y, STR_304A_NONE, 0);
				return;
			}

			i += w->vscroll.pos; // offset from sorted station list of current player
			assert(i < _num_station_sort[window_number]); // at least one station must exist

			while (i < _num_station_sort[window_number]) { // do until max number of stations of owner
				st = GetStation(_station_sort[i].index);

				assert(st->xy && st->owner == window_number);

				SetDParam(0, st->index);
				SetDParam(1, st->facilities);
				x = DrawString(xb, y, STR_3049_0, 0) + 5;

				// show cargo waiting and station ratings
				for(j=0; j!=NUM_CARGO; j++) {
					int acc = (st->goods[j].waiting_acceptance & 0xFFF);
					if (acc != 0) {
						StationsWndShowStationRating(x, y, j, acc, st->goods[j].rating);
						x += 10;
					}
				}
				y += 10;
				i++; // next station
				if (++p == w->vscroll.cap) { break;} // max number of stations in 1 window
			}
		}
	} break;
	case WE_CLICK: {
		switch(e->click.widget) {
		case 3: {
			uint32 id_v = (e->click.pt.y - 15) / 10;

			if (id_v >= w->vscroll.cap) { return;} // click out of bounds

			id_v += w->vscroll.pos;

			{
				const byte owner = (byte)w->window_number;
				Station *st;
				id_v += (owner == 0) ? 0 : _num_station_sort[owner - 1]; // first element in list

				if (id_v >= _num_station_sort[owner]) { return;} // click out of station bound

				st = GetStation(_station_sort[id_v].index);

				assert(st->xy && st->owner == owner);

				ScrollMainWindowToTile(st->xy);
			}
		} break;
		}
	} break;

	case WE_4:
		WP(w,plstations_d).refresh_counter++;
		if (WP(w,plstations_d).refresh_counter==5) {
			WP(w,plstations_d).refresh_counter = 0;
			SetWindowDirty(w);
		}
		break;

	case WE_RESIZE:
		w->vscroll.cap += e->sizing.diff.y / 10;
		break;
	}
}

static const Widget _player_stations_widgets[] = {
{   WWT_CLOSEBOX,   RESIZE_NONE,    14,     0,    10,     0,    13, STR_00C5,									STR_018B_CLOSE_WINDOW},
{    WWT_CAPTION,  RESIZE_RIGHT,    14,    11,   345,     0,    13, STR_3048_STATIONS,				STR_018C_WINDOW_TITLE_DRAG_THIS},
{  WWT_STICKYBOX,     RESIZE_LR,    14,   346,   357,     0,    13, 0x0,											STR_STICKY_BUTTON},
{      WWT_PANEL,     RESIZE_RB,    14,     0,   345,    14,   137, 0x0,											STR_3057_STATION_NAMES_CLICK_ON},
{  WWT_SCROLLBAR,    RESIZE_LRB,    14,   346,   357,    14,   125, 0x0,											STR_0190_SCROLL_BAR_SCROLLS_LIST},
{  WWT_RESIZEBOX,   RESIZE_LRTB,    14,   346,   357,   126,   137, 0x0,											STR_RESIZE_BUTTON},
{   WIDGETS_END},
};

static const WindowDesc _player_stations_desc = {
	-1, -1, 358, 138,
	WC_STATION_LIST,0,
	WDF_STD_TOOLTIPS | WDF_STD_BTN | WDF_DEF_WIDGET | WDF_STICKY_BUTTON | WDF_RESIZABLE,
	_player_stations_widgets,
	PlayerStationsWndProc
};


void ShowPlayerStations(PlayerID player)
{
	Window *w;

	w = AllocateWindowDescFront(&_player_stations_desc, player);
	if (w) {
		w->caption_color = (byte)w->window_number;
		w->vscroll.cap = 12;
		w->resize.step_height = 10;
		w->resize.height = w->height - 10 * 7; // minimum if 5 in the list
	}
}

static const Widget _station_view_expanded_widgets[] = {
{    WWT_TEXTBTN,   RESIZE_NONE,    14,     0,    10,     0,    13, STR_00C5,		STR_018B_CLOSE_WINDOW},
{    WWT_CAPTION,   RESIZE_NONE,    14,    11,   236,     0,    13, STR_300A_0,	STR_018C_WINDOW_TITLE_DRAG_THIS},
{  WWT_STICKYBOX,   RESIZE_NONE,    14,   237,   248,     0,    13, 0x0,         STR_STICKY_BUTTON},
{     WWT_IMGBTN,   RESIZE_NONE,    14,     0,   236,    14,    65, 0x0,					STR_NULL},
{  WWT_SCROLLBAR,   RESIZE_NONE,    14,   237,   248,    14,    65, 0x0,					STR_0190_SCROLL_BAR_SCROLLS_LIST},
{      WWT_EMPTY,   RESIZE_NONE,     0,     0,     0,     0,     0, 0x0,					STR_NULL},
{     WWT_IMGBTN,   RESIZE_NONE,    14,     0,   248,    66,   197, 0x0,					STR_NULL},
{ WWT_PUSHTXTBTN,   RESIZE_NONE,    14,     0,    63,   198,   209, STR_00E4_LOCATION,	STR_3053_CENTER_MAIN_VIEW_ON_STATION},
{ WWT_PUSHTXTBTN,   RESIZE_NONE,    14,    64,   128,   198,   209, STR_3033_ACCEPTS,	STR_3056_SHOW_LIST_OF_ACCEPTED_CARGO},
{ WWT_PUSHTXTBTN,   RESIZE_NONE,    14,   129,   192,   198,   209, STR_0130_RENAME,		STR_3055_CHANGE_NAME_OF_STATION},
{ WWT_PUSHTXTBTN,   RESIZE_NONE,    14,   193,   206,   198,   209, STR_TRAIN, STR_SCHEDULED_TRAINS_TIP },
{ WWT_PUSHTXTBTN,   RESIZE_NONE,    14,   207,   220,   198,   209, STR_LORRY, STR_SCHEDULED_ROAD_VEHICLES_TIP },
{ WWT_PUSHTXTBTN,   RESIZE_NONE,    14,   221,   234,   198,   209, STR_PLANE, STR_SCHEDULED_AIRCRAFT_TIP },
{ WWT_PUSHTXTBTN,   RESIZE_NONE,    14,   235,   248,   198,   209, STR_SHIP, STR_SCHEDULED_SHIPS_TIP },
{   WIDGETS_END},
};

static const Widget _station_view_widgets[] = {
{    WWT_TEXTBTN,   RESIZE_NONE,    14,     0,    10,     0,    13, STR_00C5,		STR_018B_CLOSE_WINDOW},
{    WWT_CAPTION,   RESIZE_NONE,    14,    11,   236,     0,    13, STR_300A_0,	STR_018C_WINDOW_TITLE_DRAG_THIS},
{  WWT_STICKYBOX,   RESIZE_NONE,    14,   237,   248,     0,    13, 0x0,         STR_STICKY_BUTTON},
{     WWT_IMGBTN,   RESIZE_NONE,    14,     0,   236,    14,    65, 0x0,					STR_NULL},
{  WWT_SCROLLBAR,   RESIZE_NONE,    14,   237,   248,    14,    65, 0x0,					STR_0190_SCROLL_BAR_SCROLLS_LIST},
{     WWT_IMGBTN,   RESIZE_NONE,    14,     0,   248,    66,    97, 0x0,					STR_NULL},
{      WWT_EMPTY,   RESIZE_NONE,     0,     0,     0,     0,     0, 0x0,					STR_NULL},
{ WWT_PUSHTXTBTN,   RESIZE_NONE,    14,     0,    63,    98,   109, STR_00E4_LOCATION,	STR_3053_CENTER_MAIN_VIEW_ON_STATION},
{ WWT_PUSHTXTBTN,   RESIZE_NONE,    14,    64,   128,    98,   109, STR_3032_RATINGS,	STR_3054_SHOW_STATION_RATINGS},
{ WWT_PUSHTXTBTN,   RESIZE_NONE,    14,   129,   192,    98,   109, STR_0130_RENAME,		STR_3055_CHANGE_NAME_OF_STATION},
{ WWT_PUSHTXTBTN,   RESIZE_NONE,    14,   193,   206,    98,   109, STR_TRAIN, STR_SCHEDULED_TRAINS_TIP },
{ WWT_PUSHTXTBTN,   RESIZE_NONE,    14,   207,   220,    98,   109, STR_LORRY, STR_SCHEDULED_ROAD_VEHICLES_TIP },
{ WWT_PUSHTXTBTN,   RESIZE_NONE,    14,   221,   234,    98,   109, STR_PLANE, STR_SCHEDULED_AIRCRAFT_TIP },
{ WWT_PUSHTXTBTN,   RESIZE_NONE,    14,   235,   248,    98,   109, STR_SHIP, STR_SCHEDULED_SHIPS_TIP },
{   WIDGETS_END},
};

static void DrawStationViewWindow(Window *w)
{
	Station *st;
	int i;
	int num;
	int x,y;
	int pos;
	StringID str;
	uint16 station_id;

	station_id = w->window_number;

	st = GetStation(w->window_number);

	num = 1;
	for(i=0; i!=NUM_CARGO; i++) {
		if ((st->goods[i].waiting_acceptance & 0xFFF) != 0) {
			num++;
			if (st->goods[i].enroute_from != station_id)
				num++;
		}
	}
	SetVScrollCount(w, num);

	w->disabled_state = st->owner == _local_player ? 0 : (1 << 9);

	if (!(st->facilities & FACIL_TRAIN)) SETBIT(w->disabled_state,  10);
	if (!(st->facilities & FACIL_TRUCK_STOP) &&
			!(st->facilities & FACIL_BUS_STOP)) SETBIT(w->disabled_state, 11);
	if (!(st->facilities & FACIL_AIRPORT)) SETBIT(w->disabled_state, 12);
	if (!(st->facilities & FACIL_DOCK)) SETBIT(w->disabled_state, 13);

	SetDParam(0, st->index);
	SetDParam(1, st->facilities);
	DrawWindowWidgets(w);

	x = 2;
	y = 15;
	pos = w->vscroll.pos;

	if (--pos < 0) {
		str = STR_00D0_NOTHING;
		for(i=0; i!=NUM_CARGO; i++)
			if (st->goods[i].waiting_acceptance & 0xFFF)
				str = STR_EMPTY;
		SetDParam(0, str);
		DrawString(x, y, STR_0008_WAITING, 0);
		y += 10;
	}

	i = 0;
	do {
		uint waiting = (st->goods[i].waiting_acceptance & 0xFFF);
		if (waiting == 0)
			continue;

		num = (waiting + 5) / 10;
		if (num != 0) {
			int cur_x = x;
			num = min(num, 23);
			do {
				DrawSprite(_cargoc.sprites[i], cur_x, y);
				cur_x += 10;
			} while (--num);
		}

		if ( st->goods[i].enroute_from == station_id) {
			if (--pos < 0) {
				SetDParam(1, waiting);
				SetDParam(0, _cargoc.names_long[i]);
				DrawStringRightAligned(x + 234, y, STR_0009, 0);
				y += 10;
			}
		} else {
			/* enroute */
			if (--pos < 0) {
				SetDParam(1, waiting);
				SetDParam(0, _cargoc.names_long[i]);
				DrawStringRightAligned(x + 234, y, STR_000A_EN_ROUTE_FROM, 0);
				y += 10;
			}

			if (pos > -5 && --pos < 0) {
				SetDParam(0, st->goods[i].enroute_from);
				DrawStringRightAligned(x + 234, y, STR_000B, 0);
				y += 10;
			}
		}
	} while (pos > -5 && ++i != 12);

	if (IsWindowOfPrototype(w, _station_view_widgets)) {
		char *b = _userstring;

		b = InlineString(b, STR_000C_ACCEPTS);

		for (i = 0; i != NUM_CARGO; i++) {
			if (b >= endof(_userstring) - 5 - 1) break;
			if (st->goods[i].waiting_acceptance & 0x8000) {
				b = InlineString(b, _cargoc.names_s[i]);
				*b++ = ',';
				*b++ = ' ';
			}
		}

		if (b == &_userstring[3]) {
			b = InlineString(b, STR_00D0_NOTHING);
			*b++ = '\0';
		} else {
			b[-2] = '\0';
		}

		DrawStringMultiLine(2, 67, STR_SPEC_USERSTRING, 245);
	} else {

		DrawString(2, 67, STR_3034_LOCAL_RATING_OF_TRANSPORT, 0);

		y = 77;
		for(i=0; i!=NUM_CARGO; i++) {
			if (st->goods[i].enroute_from != INVALID_STATION) {
				SetDParam(0, _cargoc.names_s[i]);
				SetDParam(2, st->goods[i].rating * 101 >> 8);
				SetDParam(1, STR_3035_APPALLING + (st->goods[i].rating >> 5));
				DrawString(8, y, STR_303D, 0);
				y += 10;
			}
		}
	}
}


static void StationViewWndProc(Window *w, WindowEvent *e)
{
	switch(e->event) {
	case WE_PAINT:
		DrawStationViewWindow(w);
		break;

	case WE_CLICK:
		switch(e->click.widget) {
		case 7:
			ScrollMainWindowToTile(GetStation(w->window_number)->xy);
			break;

		case 8:
			SetWindowDirty(w);

			/* toggle height/widget set */
			if (IsWindowOfPrototype(w, _station_view_expanded_widgets)) {
				AssignWidgetToWindow(w, _station_view_widgets);
				w->height = 110;
			} else {
				AssignWidgetToWindow(w, _station_view_expanded_widgets);
				w->height = 210;
			}

			SetWindowDirty(w);
			break;

		case 9: {
			SetDParam(0, w->window_number);
			ShowQueryString(STR_STATION, STR_3030_RENAME_STATION_LOADING, 31, 180, w->window_class, w->window_number);
		} break;

		case 10: { /* Show a list of scheduled trains to this station */
			const Station *st = GetStation(w->window_number);
			ShowPlayerTrains(st->owner, w->window_number);
			break;
		}

		case 11: { /* Show a list of scheduled road-vehicles to this station */
			const Station *st = GetStation(w->window_number);
			ShowPlayerRoadVehicles(st->owner, w->window_number);
			break;
		}

		case 12: { /* Show a list of scheduled aircraft to this station */
			const Station *st = GetStation(w->window_number);
			/* Since oilrigs have no owners, show the scheduled aircraft of current player */
			PlayerID owner = (st->owner == OWNER_NONE) ? _current_player : st->owner;
			ShowPlayerAircraft(owner, w->window_number);
			break;
		}

		case 13: { /* Show a list of scheduled ships to this station */
			const Station *st = GetStation(w->window_number);
			/* Since oilrigs/bouys have no owners, show the scheduled ships of current player */
			PlayerID owner = (st->owner == OWNER_NONE) ? _current_player : st->owner;
			ShowPlayerShips(owner, w->window_number);
			break;
		}
		}
		break;

	case WE_ON_EDIT_TEXT: {
		if (e->edittext.str[0] != '\0') {
			Station* st = GetStation(w->window_number);

			_cmd_text = e->edittext.str;
			DoCommandP(st->xy, w->window_number, 0, NULL,
				CMD_RENAME_STATION | CMD_MSG(STR_3031_CAN_T_RENAME_STATION));
		}
	} break;

	case WE_DESTROY: {
		WindowNumber wno =
			(w->window_number << 16) | GetStation(w->window_number)->owner;

		DeleteWindowById(WC_TRAINS_LIST, wno);
		DeleteWindowById(WC_ROADVEH_LIST, wno);
		DeleteWindowById(WC_SHIPS_LIST, wno);
		DeleteWindowById(WC_AIRCRAFT_LIST, wno);
		break;
	}
	}
}


static const WindowDesc _station_view_desc = {
	-1, -1, 249, 110,
	WC_STATION_VIEW,0,
	WDF_STD_TOOLTIPS | WDF_STD_BTN | WDF_DEF_WIDGET | WDF_UNCLICK_BUTTONS | WDF_STICKY_BUTTON,
	_station_view_widgets,
	StationViewWndProc
};

void ShowStationViewWindow(int station)
{
	Window *w;
	byte color;

	w = AllocateWindowDescFront(&_station_view_desc, station);
	if (w) {
		color = GetStation(w->window_number)->owner;
		if (color != 0x10)
			w->caption_color = color;
		w->vscroll.cap = 5;
	}
}