/* $Id$ */

/** @file roadveh_gui.cpp */

#include "stdafx.h"
#include "openttd.h"
#include "debug.h"
#include "functions.h"
#include "roadveh.h"
#include "table/sprites.h"
#include "table/strings.h"
#include "window.h"
#include "gui.h"
#include "strings.h"
#include "vehicle.h"
#include "viewport.h"
#include "command.h"
#include "depot.h"
#include "vehicle_gui.h"
#include "newgrf_engine.h"

static inline int RoadVehLengthToPixels(int length)
{
	return (length * 28) / 8;
}

void DrawRoadVehImage(const Vehicle *v, int x, int y, int count, VehicleID selection)
{
	int dx = 0;

	/* Road vehicle lengths are measured in eighths of the standard length, so
	 * count is the number of standard vehicles that should be drawn. If it is
	 * 0, we draw enough vehicles for 10 standard vehicle lengths. */
	int max_length = (count == 0) ? 80 : count * 8;

	do {
		int length = v->u.road.cached_veh_length;

		if (dx + length > 0 && dx <= max_length) {
			SpriteID pal = (v->vehstatus & VS_CRASHED) ? PALETTE_CRASH : GetVehiclePalette(v);
			DrawSprite(GetRoadVehImage(v, DIR_W), pal, x + 14 + RoadVehLengthToPixels(dx), y + 6);

			if (v->index == selection) {
				DrawFrameRect(x - 1, y - 1, x + 28, y + 12, 15, FR_BORDERONLY);
			}
		}

		dx += length;
		v = v->next;
	} while (v != NULL && dx < max_length);
}

static void RoadVehDetailsWndProc(Window *w, WindowEvent *e)
{
	switch (e->event) {
	case WE_CREATE: {
		const Vehicle *v = GetVehicle(w->window_number);

		if (!RoadVehHasArticPart(v)) break;

		/* Draw the text under the vehicle instead of next to it, minus the
		 * height already allocated for the cargo of the first vehicle. */
		uint height_extension = 15 - 11;

		/* Add space for the cargo amount for each part. */
		do {
			height_extension += 11;
		} while ((v = v->next) != NULL);

		ResizeWindow(w, 0, height_extension);
	} break;

	case WE_PAINT: {
		const Vehicle *v = GetVehicle(w->window_number);
		StringID str;
		uint y_offset = RoadVehHasArticPart(v) ? 15 :0;

		SetWindowWidgetDisabledState(w, 2, v->owner != _local_player);
		/* disable service-scroller when interval is set to disabled */
		SetWindowWidgetDisabledState(w, 5, !_patches.servint_roadveh);
		SetWindowWidgetDisabledState(w, 6, !_patches.servint_roadveh);

		SetDParam(0, v->string_id);
		SetDParam(1, v->unitnumber);
		DrawWindowWidgets(w);

		/* Draw running cost */
		{
			int year = v->age / 366;

			SetDParam(1, year);

			SetDParam(0, (v->age + 365 < v->max_age) ? STR_AGE : STR_AGE_RED);
			SetDParam(2, v->max_age / 366);
			SetDParam(3, RoadVehInfo(v->engine_type)->running_cost * _price.roadveh_running >> 8);
			DrawString(2, 15, STR_900D_AGE_RUNNING_COST_YR, 0);
		}

		/* Draw max speed */
		{
			SetDParam(0, v->max_speed * 10 / 32);
			DrawString(2, 25, STR_900E_MAX_SPEED, 0);
		}

		/* Draw profit */
		{
			SetDParam(0, v->profit_this_year);
			SetDParam(1, v->profit_last_year);
			DrawString(2, 35, STR_900F_PROFIT_THIS_YEAR_LAST_YEAR, 0);
		}

		/* Draw breakdown & reliability */
		{
			SetDParam(0, v->reliability * 100 >> 16);
			SetDParam(1, v->breakdowns_since_last_service);
			DrawString(2, 45, STR_9010_RELIABILITY_BREAKDOWNS, 0);
		}

		DrawRoadVehImage(v, 3, 57, 0, INVALID_VEHICLE);

		SetDParam(0, GetCustomEngineName(v->engine_type));
		SetDParam(1, v->build_year);
		SetDParam(2, v->value);
		DrawString(34, 57 + y_offset, STR_9011_BUILT_VALUE, 0);

		if (RoadVehHasArticPart(v)) {
			AcceptedCargo max_cargo;
			char capacity[512];

			memset(max_cargo, 0, sizeof(max_cargo));

			for (const Vehicle *u = v; u != NULL; u = u->next) {
				max_cargo[u->cargo_type] += u->cargo_cap;
			}

			GetString(capacity, STR_ARTICULATED_RV_CAPACITY, lastof(capacity));

			bool first = true;
			for (CargoID i = 0; i < NUM_CARGO; i++) {
				if (max_cargo[i] > 0) {
					char buffer[128];

					SetDParam(0, i);
					SetDParam(1, max_cargo[i]);
					GetString(buffer, STR_BARE_CARGO, lastof(buffer));

					if (!first) strecat(capacity, ", ", lastof(capacity));
					strecat(capacity, buffer, lastof(capacity));
				}
			}

			SetDParamStr(0, capacity);
			DrawStringTruncated(34, 67 + y_offset, STR_JUST_STRING, 0, w->width - 34);

			for (const Vehicle *u = v; u != NULL; u = u->next) {
				str = STR_8812_EMPTY;
				if (u->cargo_count != 0) {
					SetDParam(0, u->cargo_type);
					SetDParam(1, u->cargo_count);
					SetDParam(2, u->cargo_source);
					str = STR_8813_FROM;
				}
				DrawString(34, 78 + y_offset, str, 0);

				y_offset += 11;
			}

			y_offset -= 11;
		} else {
			SetDParam(0, v->cargo_type);
			SetDParam(1, v->cargo_cap);
			DrawString(34, 67 + y_offset, STR_9012_CAPACITY, 0);

			str = STR_8812_EMPTY;
			if (v->cargo_count != 0) {
				SetDParam(0, v->cargo_type);
				SetDParam(1, v->cargo_count);
				SetDParam(2, v->cargo_source);
				str = STR_8813_FROM;
			}
			DrawString(34, 78 + y_offset, str, 0);
		}

		/* Draw Transfer credits text */
		SetDParam(0, v->cargo_feeder_share);
		DrawString(34, 90 + y_offset, STR_FEEDER_CARGO_VALUE, 0);

		/* Draw service interval text */
		{
			SetDParam(0, v->service_interval);
			SetDParam(1, v->date_of_last_service);
			DrawString(13, 102 + y_offset, _patches.servint_ispercent ? STR_SERVICING_INTERVAL_PERCENT : STR_883C_SERVICING_INTERVAL_DAYS, 0);
		}
	} break;

	case WE_CLICK: {
		int mod;
		const Vehicle *v;
		switch (e->we.click.widget) {
		case 2: /* rename */
			v = GetVehicle(w->window_number);
			SetDParam(0, v->unitnumber);
			ShowQueryString(v->string_id, STR_902C_NAME_ROAD_VEHICLE, 31, 150, w, CS_ALPHANUMERAL);
			break;

		case 5: /* increase int */
			mod = _ctrl_pressed? 5 : 10;
			goto do_change_service_int;
		case 6: /* decrease int */
			mod = _ctrl_pressed? -5 : -10;
do_change_service_int:
			v = GetVehicle(w->window_number);

			mod = GetServiceIntervalClamped(mod + v->service_interval);
			if (mod == v->service_interval) return;

			DoCommandP(v->tile, v->index, mod, NULL, CMD_CHANGE_SERVICE_INT | CMD_MSG(STR_018A_CAN_T_CHANGE_SERVICING));
			break;
		}
	} break;

	case WE_ON_EDIT_TEXT: {
		if (e->we.edittext.str[0] != '\0') {
			_cmd_text = e->we.edittext.str;
			DoCommandP(0, w->window_number, 0, NULL,
				CMD_NAME_VEHICLE | CMD_MSG(STR_902D_CAN_T_NAME_ROAD_VEHICLE));
		}
	} break;

	}
}

static const Widget _roadveh_details_widgets[] = {
{   WWT_CLOSEBOX,   RESIZE_NONE,    14,     0,    10,     0,    13, STR_00C5,         STR_018B_CLOSE_WINDOW},
{    WWT_CAPTION,   RESIZE_NONE,    14,    11,   339,     0,    13, STR_900C_DETAILS, STR_018C_WINDOW_TITLE_DRAG_THIS},
{ WWT_PUSHTXTBTN,   RESIZE_NONE,    14,   340,   379,     0,    13, STR_01AA_NAME,    STR_902E_NAME_ROAD_VEHICLE},
{      WWT_PANEL,   RESIZE_NONE,    14,     0,   379,    14,    55, 0x0,              STR_NULL},
{      WWT_PANEL,   RESIZE_BOTTOM,  14,     0,   379,    56,   100, 0x0,              STR_NULL},
{ WWT_PUSHTXTBTN,   RESIZE_TB,      14,     0,    10,   101,   106, STR_0188,         STR_884D_INCREASE_SERVICING_INTERVAL},
{ WWT_PUSHTXTBTN,   RESIZE_TB,      14,     0,    10,   107,   112, STR_0189,         STR_884E_DECREASE_SERVICING_INTERVAL},
{      WWT_PANEL,   RESIZE_TB,      14,    11,   379,   101,   112, 0x0,              STR_NULL},
{   WIDGETS_END},
};

static const WindowDesc _roadveh_details_desc = {
	WDP_AUTO, WDP_AUTO, 380, 113,
	WC_VEHICLE_DETAILS,WC_VEHICLE_VIEW,
	WDF_STD_TOOLTIPS | WDF_STD_BTN | WDF_DEF_WIDGET | WDF_UNCLICK_BUTTONS,
	_roadveh_details_widgets,
	RoadVehDetailsWndProc
};

static void ShowRoadVehDetailsWindow(const Vehicle *v)
{
	Window *w;
	VehicleID veh = v->index;

	DeleteWindowById(WC_VEHICLE_ORDERS, veh);
	DeleteWindowById(WC_VEHICLE_DETAILS, veh);

	w = AllocateWindowDescFront(&_roadveh_details_desc, veh);
	w->caption_color = v->owner;
}

void CcCloneRoadVeh(bool success, TileIndex tile, uint32 p1, uint32 p2)
{
	if (success) ShowRoadVehViewWindow(GetVehicle(_new_vehicle_id));
}

static void RoadVehViewWndProc(Window *w, WindowEvent *e)
{
	switch (e->event) {
	case WE_PAINT: {
		Vehicle *v = GetVehicle(w->window_number);
		StringID str;
		bool is_localplayer = v->owner == _local_player;

		SetWindowWidgetDisabledState(w,  7, !is_localplayer);
		SetWindowWidgetDisabledState(w,  8, !is_localplayer || v->u.road.roadtype == ROADTYPE_TRAM);
		SetWindowWidgetDisabledState(w, 11, !is_localplayer);
		/* Disable refit button if vehicle not refittable */
		SetWindowWidgetDisabledState(w, 12, !is_localplayer ||
				_engine_info[v->engine_type].refit_mask == 0);

		/* draw widgets & caption */
		SetDParam(0, v->string_id);
		SetDParam(1, v->unitnumber);
		DrawWindowWidgets(w);

		if (v->u.road.crashed_ctr != 0) {
			str = STR_8863_CRASHED;
		} else if (v->breakdown_ctr == 1) {
			str = STR_885C_BROKEN_DOWN;
		} else if (v->vehstatus & VS_STOPPED) {
			str = STR_8861_STOPPED;
		} else {
			switch (v->current_order.type) {
			case OT_GOTO_STATION: {
				SetDParam(0, v->current_order.dest);
				SetDParam(1, v->cur_speed * 10 / 32);
				str = STR_HEADING_FOR_STATION + _patches.vehicle_speed;
			} break;

			case OT_GOTO_DEPOT: {
				Depot *depot = GetDepot(v->current_order.dest);
				SetDParam(0, depot->town_index);
				SetDParam(1, v->cur_speed * 10 / 32);
				if (HASBIT(v->current_order.flags, OFB_HALT_IN_DEPOT) && !HASBIT(v->current_order.flags, OFB_PART_OF_ORDERS)) {
					str = STR_HEADING_FOR_ROAD_DEPOT + _patches.vehicle_speed;
				} else {
					str = STR_HEADING_FOR_ROAD_DEPOT_SERVICE + _patches.vehicle_speed;
				}
			} break;

			case OT_LOADING:
			case OT_LEAVESTATION:
				str = STR_882F_LOADING_UNLOADING;
				break;

			default:
				if (v->num_orders == 0) {
					str = STR_NO_ORDERS + _patches.vehicle_speed;
					SetDParam(0, v->cur_speed * 10 / 32);
				} else {
					str = STR_EMPTY;
				}
				break;
			}
		}

		/* draw the flag plus orders */
		DrawSprite(v->vehstatus & VS_STOPPED ? SPR_FLAG_VEH_STOPPED : SPR_FLAG_VEH_RUNNING, PAL_NONE, 2, w->widget[5].top + 1);
		DrawStringCenteredTruncated(w->widget[5].left + 8, w->widget[5].right, w->widget[5].top + 1, str, 0);
		DrawWindowViewport(w);
	} break;

	case WE_CLICK: {
		const Vehicle *v = GetVehicle(w->window_number);

		switch (e->we.click.widget) {
		case 5: /* start stop */
			DoCommandP(v->tile, v->index, 0, NULL, CMD_START_STOP_ROADVEH | CMD_MSG(STR_9015_CAN_T_STOP_START_ROAD_VEHICLE));
			break;
		case 6: /* center main view */
			ScrollMainWindowTo(v->x_pos, v->y_pos);
			break;
		case 7: /* goto depot */
			DoCommandP(v->tile, v->index, _ctrl_pressed ? DEPOT_SERVICE : 0, NULL, CMD_SEND_ROADVEH_TO_DEPOT | CMD_MSG(STR_9018_CAN_T_SEND_VEHICLE_TO_DEPOT));
			break;
		case 8: /* turn around */
			DoCommandP(v->tile, v->index, 0, NULL, CMD_TURN_ROADVEH | CMD_MSG(STR_9033_CAN_T_MAKE_VEHICLE_TURN));
			break;
		case 9: /* show orders */
			ShowOrdersWindow(v);
			break;
		case 10: /* show details */
			ShowRoadVehDetailsWindow(v);
			break;
		case 11: /* clone vehicle */
			DoCommandP(v->tile, v->index, _ctrl_pressed ? 1 : 0, CcCloneRoadVeh, CMD_CLONE_VEHICLE | CMD_MSG(STR_9009_CAN_T_BUILD_ROAD_VEHICLE));
			break;
		case 12: /* Refit vehicle */
			ShowVehicleRefitWindow(v, INVALID_VEH_ORDER_ID);
			break;
		}
	} break;

	case WE_RESIZE:
		w->viewport->width          += e->we.sizing.diff.x;
		w->viewport->height         += e->we.sizing.diff.y;
		w->viewport->virtual_width  += e->we.sizing.diff.x;
		w->viewport->virtual_height += e->we.sizing.diff.y;
		break;

	case WE_DESTROY:
		DeleteWindowById(WC_VEHICLE_REFIT, w->window_number);
		DeleteWindowById(WC_VEHICLE_ORDERS, w->window_number);
		DeleteWindowById(WC_VEHICLE_DETAILS, w->window_number);
		break;

	case WE_MOUSELOOP: {
			const Vehicle *v = GetVehicle(w->window_number);
			bool rv_stopped = IsRoadVehInDepotStopped(v);

			/* Widget 7 (send to depot) must be hidden if the truck/bus is already stopped in depot.
			 * Widget 11 (clone) should then be shown, since cloning is allowed only while in depot and stopped.
			 * This sytem allows to have two buttons, on top of each other.
			 * The same system applies to widget 8 and 12, force turn around and refit. */
			if (rv_stopped != IsWindowWidgetHidden(w, 7) || rv_stopped == IsWindowWidgetHidden(w, 11)) {
				SetWindowWidgetHiddenState(w,  7, rv_stopped);  // send to depot
				SetWindowWidgetHiddenState(w,  8, rv_stopped);  // force turn around
				SetWindowWidgetHiddenState(w, 11, !rv_stopped); // clone
				SetWindowWidgetHiddenState(w, 12, !rv_stopped); // refit
				SetWindowDirty(w);
			}
		}
	}
}

static const Widget _roadveh_view_widgets[] = {
{   WWT_CLOSEBOX, RESIZE_NONE,  14,   0,  10,   0,  13, STR_00C5,                STR_018B_CLOSE_WINDOW },
{    WWT_CAPTION, RESIZE_RIGHT, 14,  11, 237,   0,  13, STR_9002,                STR_018C_WINDOW_TITLE_DRAG_THIS },
{  WWT_STICKYBOX, RESIZE_LR,    14, 238, 249,   0,  13, 0x0,                     STR_STICKY_BUTTON },
{      WWT_PANEL, RESIZE_RB,    14,   0, 231,  14, 103, 0x0,                     STR_NULL },
{      WWT_INSET, RESIZE_RB,    14,   2, 229,  16, 101, 0x0,                     STR_NULL },
{    WWT_PUSHBTN, RESIZE_RTB,   14,   0, 237, 104, 115, 0x0,                     STR_901C_CURRENT_VEHICLE_ACTION },
{ WWT_PUSHIMGBTN, RESIZE_LR,    14, 232, 249,  14,  31, SPR_CENTRE_VIEW_VEHICLE, STR_901E_CENTER_MAIN_VIEW_ON_VEHICLE },
{ WWT_PUSHIMGBTN, RESIZE_LR,    14, 232, 249,  32,  49, SPR_SEND_ROADVEH_TODEPOT,STR_901F_SEND_VEHICLE_TO_DEPOT },
{ WWT_PUSHIMGBTN, RESIZE_LR,    14, 232, 249,  50,  67, SPR_FORCE_VEHICLE_TURN,  STR_9020_FORCE_VEHICLE_TO_TURN_AROUND },
{ WWT_PUSHIMGBTN, RESIZE_LR,    14, 232, 249,  68,  85, SPR_SHOW_ORDERS,         STR_901D_SHOW_VEHICLE_S_ORDERS },
{ WWT_PUSHIMGBTN, RESIZE_LR,    14, 232, 249,  86, 103, SPR_SHOW_VEHICLE_DETAILS,STR_9021_SHOW_ROAD_VEHICLE_DETAILS },
{ WWT_PUSHIMGBTN, RESIZE_LR,    14, 232, 249,  32,  49, SPR_CLONE_ROADVEH,       STR_CLONE_ROAD_VEHICLE_INFO },
{ WWT_PUSHIMGBTN, RESIZE_LR,    14, 232, 249,  50,  67, SPR_REFIT_VEHICLE,       STR_REFIT_ROAD_VEHICLE_TO_CARRY },
{      WWT_PANEL, RESIZE_LRB,   14, 232, 249, 104, 103, 0x0,                     STR_NULL },
{  WWT_RESIZEBOX, RESIZE_LRTB,  14, 238, 249, 104, 115, 0x0,                     STR_NULL },
{ WIDGETS_END }
};

static const WindowDesc _roadveh_view_desc = {
	WDP_AUTO, WDP_AUTO, 250, 116,
	WC_VEHICLE_VIEW, WC_NONE,
	WDF_STD_TOOLTIPS | WDF_STD_BTN | WDF_DEF_WIDGET | WDF_UNCLICK_BUTTONS | WDF_STICKY_BUTTON | WDF_RESIZABLE,
	_roadveh_view_widgets,
	RoadVehViewWndProc,
};

void ShowRoadVehViewWindow(const Vehicle *v)
{
	Window *w = AllocateWindowDescFront(&_roadveh_view_desc, v->index);

	if (w != NULL) {
		w->caption_color = v->owner;
		AssignWindowViewport(w, 3, 17, 0xE2, 0x54, w->window_number | (1 << 31), ZOOM_LVL_ROADVEH);
	}
}

void CcBuildRoadVeh(bool success, TileIndex tile, uint32 p1, uint32 p2)
{
	const Vehicle *v;

	if (!success) return;

	v = GetVehicle(_new_vehicle_id);
	if (v->tile == _backup_orders_tile) {
		_backup_orders_tile = 0;
		RestoreVehicleOrders(v, _backup_orders_data);
	}
	ShowRoadVehViewWindow(v);
}