#include "stdafx.h"
#include "ttd.h"
#include "town.h"
#include "window.h"
#include "gfx.h"
#include "viewport.h"
#include "gui.h"
#include "command.h"
#include "player.h"

static const Widget _town_authority_widgets[] = {
{    WWT_TEXTBTN,    13,     0,    10,     0,    13, STR_00C5, STR_018B_CLOSE_WINDOW},
{    WWT_CAPTION,    13,    11,   316,     0,    13, STR_2022_LOCAL_AUTHORITY, STR_018C_WINDOW_TITLE_DRAG_THIS},
{     WWT_IMGBTN,    13,     0,   316,    14,   105, 0x0, 0},
{     WWT_IMGBTN,    13,     0,   305,   106,   157, 0x0, STR_2043_LIST_OF_THINGS_TO_DO_AT},
{  WWT_SCROLLBAR,    13,   306,   316,   106,   157, 0x0, STR_0190_SCROLL_BAR_SCROLLS_LIST},
{     WWT_IMGBTN,    13,     0,   316,   158,   209, 0x0, 0},
{ WWT_PUSHTXTBTN,    13,     0,   316,   210,   221, STR_2042_DO_IT, STR_2044_CARRY_OUT_THE_HIGHLIGHTED},
{      WWT_LAST},
};

extern const byte _town_action_costs[8];
extern void DrawPlayerIcon(int p, int x, int y);

static uint GetMaskOfTownActions(int *nump, Town *t)
{
	int32 avail, ref;
	int i, num;
	uint avail_buttons = 0x7F; // by default all buttons except bribe are enabled.
	uint buttons;

	if (_local_player != 0xff) {
		// bribe option enabled?
		if (_patches.bribe) {
			// if unwanted, disable everything.
			if (t->unwanted[_local_player]) {
				avail_buttons = 0;
			} else if (t->ratings[_local_player] < 600)
				avail_buttons |= (1 << 7); // only bribe if less than excellent
		}

		// Things worth more than this are not shown
		avail = DEREF_PLAYER(_local_player)->player_money + _price.station_value * 200;
		ref = _price.build_industry >> 8;

		for(i=0,buttons=0,num=0; i != lengthof(_town_action_costs); i++,avail_buttons>>=1) {
			if (avail_buttons&1 && avail >= _town_action_costs[i] * ref) {
				SETBIT(buttons, i);
				num++;
			}
		}

		// Disable build statue if already built
		if(HASBIT(t->statues, _local_player))
		{
			CLRBIT(buttons, 4);
			num--;
		}

	} else {
		// no actions available for spectator
		buttons = 0;
		num = 0;
	}

	if (nump) *nump = num;
	return buttons;
}

static int GetNthSetBit(uint32 bits, int n)
{
	int i = 0;
	if (n >= 0) {
		do {
			if (bits&1 && --n < 0) return i;
			i++;
		} while (bits>>=1);
	}
	return -1;
}

static void TownAuthorityWndProc(Window *w, WindowEvent *e)
{
	uint buttons;
	int numact;
	Town *t = DEREF_TOWN(w->window_number);
		
	switch(e->event) {
	case WE_PAINT:
		buttons = GetMaskOfTownActions(&numact, t);
		SetVScrollCount(w, numact + 1);

		if (WP(w,def_d).data_1 != -1 && !HASBIT(buttons, WP(w,def_d).data_1))
			WP(w,def_d).data_1 = -1;

		w->disabled_state = (WP(w,def_d).data_1 == -1) ? (1 << 6) : 0;

		{
			int y;
			Player *p;
			int r;
			StringID str;

			SET_DPARAM16(0, w->window_number);
			DrawWindowWidgets(w);

			DrawString(2, 15, STR_2023_TRANSPORT_COMPANY_RATINGS, 0);
			
			// Draw list of players
			y = 25;
			FOR_ALL_PLAYERS(p) {
				if (p->is_active && HASBIT(t->have_ratings, p->index)) {
					DrawPlayerIcon(p->index, 2, y);
					
					SET_DPARAM16(0, p->name_1);
					SET_DPARAM32(1, p->name_2);
					SET_DPARAM16(2, GetPlayerNameString(p->index));

					r = t->ratings[p->index];
					(str = STR_3035_APPALLING, r <= -400) ||	// Apalling
					(str++, r <= -200) ||											// Very Poor
					(str++, r <= 0) ||												// Poor
					(str++, r <= 200) ||											// Mediocore
					(str++, r <= 400) ||											// Good
					(str++, r <= 600) ||											// Very Good
					(str++, r <= 800) ||											// Excellent
					(str++, true);														// Outstanding

					SET_DPARAM16(3, str);
					DrawString(19, y, STR_2024, 0);
					y+=10;
				}
			}
		}

		// Draw actions list
		{
			int y = 107, i;
			int pos = w->vscroll.pos;

			if (--pos < 0) {
				DrawString(2, y, STR_2045_ACTIONS_AVAILABLE, 0);
				y+=10;
			}
			for(i=0; buttons; i++,buttons>>=1) {
				if (pos <= -5)
					break;

				if (buttons&1 && --pos < 0) {
					DrawString(3, y, STR_2046_SMALL_ADVERTISING_CAMPAIGN + i, 6);
					y += 10;
				}
			}
		}
		
		{
			int i;
			if ((i=WP(w,def_d).data_1) != -1) {
				SET_DPARAM32(1, (_price.build_industry >> 8) * _town_action_costs[i]);
				SET_DPARAM16(0, STR_2046_SMALL_ADVERTISING_CAMPAIGN + i);
				DrawStringMultiLine(2, 159, STR_204D_INITIATE_A_SMALL_LOCAL + i, 313);
			}
		}
	
		break;

	case WE_CLICK:
		switch(e->click.widget) {
		case 3: { /* listbox */
			int y = (e->click.pt.y - 0x6B) / 10;
			if (!IS_INT_INSIDE(y, 0, 5))
				return;

			y = GetNthSetBit(GetMaskOfTownActions(NULL, t), y + w->vscroll.pos - 1);
			if (y >= 0) {
				WP(w,def_d).data_1 = y;
				SetWindowDirty(w);
			}
			break;
		}

		case 6: { /* carry out the action */
			DoCommandP(t->xy, w->window_number, WP(w,def_d).data_1, NULL, CMD_DO_TOWN_ACTION | CMD_MSG(STR_2054_CAN_T_DO_THIS));
			break;
		}
		}
		break;

	case WE_4:
		SetWindowDirty(w);
		break;
	}
}

static const WindowDesc _town_authority_desc = {
	-1, -1, 317, 222,
	WC_TOWN_AUTHORITY,0,
	WDF_STD_TOOLTIPS | WDF_STD_BTN | WDF_DEF_WIDGET | WDF_UNCLICK_BUTTONS,
	_town_authority_widgets,
	TownAuthorityWndProc
};

void ShowTownAuthorityWindow(uint town)
{
	Window *w;

	w = AllocateWindowDescFront(&_town_authority_desc, town);
	if (w) {
		w->vscroll.cap = 5;
		WP(w,def_d).data_1 = -1;
	}
}

static void TownViewWndProc(Window *w, WindowEvent *e)
{
	Town *t = DEREF_TOWN(w->window_number);

	switch(e->event) {
	case WE_PAINT:
		SET_DPARAM16(0, t->index);
		DrawWindowWidgets(w);
		
		SET_DPARAM32(0, t->population);
		SET_DPARAM32(1, t->num_houses);
		DrawString(2,107,STR_2006_POPULATION,0);
		
		SET_DPARAM16(0, t->act_pass);
		SET_DPARAM16(1, t->max_pass);
		DrawString(2,117,STR_200D_PASSENGERS_LAST_MONTH_MAX,0);

		SET_DPARAM16(0, t->act_mail);
		SET_DPARAM16(1, t->max_mail);
		DrawString(2,127,STR_200E_MAIL_LAST_MONTH_MAX,0);
			
		DrawWindowViewport(w);
		break;

	case WE_CLICK:
		switch(e->click.widget) {
		case 5: /* scroll to location */
			ScrollMainWindowToTile(t->xy);
			break;
		case 6: /* town authority */
			ShowTownAuthorityWindow(w->window_number);
			break;
		case 7: /* rename */
			SET_DPARAM32(0, t->townnameparts);
			ShowQueryString(t->townnametype, STR_2007_RENAME_TOWN, 31, 130, w->window_class, w->window_number);
			break;
		case 8: /* expand town */
			ExpandTown(t);
			break;
		case 9: /* delete town */
			DeleteTown(t);
			break;
		}
		break;

	case WE_ON_EDIT_TEXT: {
		byte *b = e->edittext.str;
		if (*b == 0)
			return;
		memcpy(_decode_parameters, b, 32);
		DoCommandP(0, w->window_number, 0, NULL, CMD_RENAME_TOWN | CMD_MSG(STR_2008_CAN_T_RENAME_TOWN));
	} break;
	}
}


static const Widget _town_view_widgets[] = {
{    WWT_TEXTBTN,    13,     0,    10,     0,    13, STR_00C5, STR_018B_CLOSE_WINDOW},
{    WWT_CAPTION,    13,    11,   259,     0,    13, STR_2005, STR_018C_WINDOW_TITLE_DRAG_THIS},
{     WWT_IMGBTN,    13,     0,   259,    14,   105, 0x0,      0},
{          WWT_6,    13,     2,   257,    16,   103, 0x0,      0},
{     WWT_IMGBTN,    13,     0,   259,   106,   137, 0x0,      0},
{ WWT_PUSHTXTBTN,    13,     0,    85,   138,   149, STR_00E4_LOCATION, STR_200B_CENTER_THE_MAIN_VIEW_ON},
{ WWT_PUSHTXTBTN,    13,    86,   171,   138,   149, STR_2020_LOCAL_AUTHORITY, STR_2021_SHOW_INFORMATION_ON_LOCAL},
{ WWT_PUSHTXTBTN,    13,   172,   259,   138,   149, STR_0130_RENAME, STR_200C_CHANGE_TOWN_NAME},
{      WWT_LAST},
};

static const WindowDesc _town_view_desc = {
	-1, -1, 260, 150,
	WC_TOWN_VIEW,0,
	WDF_STD_TOOLTIPS | WDF_STD_BTN | WDF_DEF_WIDGET | WDF_UNCLICK_BUTTONS,
	_town_view_widgets,
	TownViewWndProc
};

static const Widget _town_view_scen_widgets[] = {
{    WWT_TEXTBTN,    13,     0,    10,     0,    13, STR_00C5, STR_018B_CLOSE_WINDOW},
{    WWT_CAPTION,    13,    11,   184,     0,    13, STR_2005, STR_018C_WINDOW_TITLE_DRAG_THIS},
{     WWT_IMGBTN,    13,     0,   259,    14,   105, 0x0},
{          WWT_6,    13,     2,   257,    16,   103, 0x0},
{     WWT_IMGBTN,    13,     0,   259,   106,   137, 0x0},
{ WWT_PUSHTXTBTN,    13,     0,    85,   138,   149, STR_00E4_LOCATION, STR_200B_CENTER_THE_MAIN_VIEW_ON},
{      WWT_EMPTY,     0,     0,     0,     0,     0, 0x0},
{ WWT_PUSHTXTBTN,    13,   185,   259,     0,    13, STR_0130_RENAME, STR_200C_CHANGE_TOWN_NAME},
{ WWT_PUSHTXTBTN,    13,    86,   171,   138,   149, STR_023C_EXPAND, STR_023B_INCREASE_SIZE_OF_TOWN},
{ WWT_PUSHTXTBTN,    13,   172,   259,   138,   149, STR_0290_DELETE, STR_0291_DELETE_THIS_TOWN_COMPLETELY},
{      WWT_LAST},
};

static const WindowDesc _town_view_scen_desc = {
	-1, -1, 260, 150,
	WC_TOWN_VIEW,0,
	WDF_STD_TOOLTIPS | WDF_STD_BTN | WDF_DEF_WIDGET | WDF_UNCLICK_BUTTONS,
	_town_view_scen_widgets,
	TownViewWndProc
};

void ShowTownViewWindow(uint town)
{
	Window *w;
	Town *t;

	if (_game_mode != GM_EDITOR) {
		w = AllocateWindowDescFront(&_town_view_desc, town);
	} else {
		w = AllocateWindowDescFront(&_town_view_scen_desc, town);
	}

	if (w) {
		w->flags4 |= WF_DISABLE_VP_SCROLL;
		t = DEREF_TOWN(w->window_number);
		AssignWindowViewport(w, 3, 17, 0xFE, 0x56, t->xy, 1);
	}
}

static const Widget _town_directory_widgets[] = {
{    WWT_TEXTBTN,    13,     0,    10,     0,    13, STR_00C5, STR_018B_CLOSE_WINDOW},
{    WWT_CAPTION,    13,    11,   207,     0,    13, STR_2000_TOWNS, STR_018C_WINDOW_TITLE_DRAG_THIS},
{ WWT_PUSHTXTBTN,    13,     0,    98,    14,    25, STR_SORT_BY_NAME, STR_SORT_TIP},
{ WWT_PUSHTXTBTN,    13,    99,   196,    14,    25, STR_SORT_BY_POPULATION,STR_SORT_TIP},
{     WWT_IMGBTN,    13,     0,   196,    26,   189, 0x0, STR_200A_TOWN_NAMES_CLICK_ON_NAME},
{  WWT_SCROLLBAR,    13,   197,   207,    14,   189, 0x0, STR_0190_SCROLL_BAR_SCROLLS_LIST},
{      WWT_LAST},
};


// used to get a sorted list of the towns
static byte _town_sort[lengthof(_towns)];
static uint _num_town_sort;

static char _bufcache[64];
static byte _last_town_idx;

static int CDECL TownSorterByName(const void *a, const void *b)
{
	char buf1[64];
	Town *t;
	byte val;
	int r;

	t = DEREF_TOWN(*(byte*)a);
	SET_DPARAM32(0, t->townnameparts);
	GetString(buf1, t->townnametype);

	if ( (val=*(byte*)b) != _last_town_idx) {
		_last_town_idx = val;
		t = DEREF_TOWN(val);
		SET_DPARAM32(0, t->townnameparts);
		GetString(_bufcache, t->townnametype);
	}

	r = strcmp(buf1, _bufcache);
	if (_town_sort_order & 1) r = -r;
	return r;
}

static int CDECL TownSorterByPop(const void *a, const void *b)
{
	Town *ta = DEREF_TOWN(*(byte*)a);
	Town *tb = DEREF_TOWN(*(byte*)b);
	int r = tb->population - ta->population;
	if (_town_sort_order & 1) r = -r;
	return r;
}

static void MakeSortedTownList()
{
	Town *t;
	int n = 0;
	FOR_ALL_TOWNS(t) if(t->xy) _town_sort[n++] = t->index;
	_num_town_sort = n;

	_last_town_idx = 255; // used for "cache"
	qsort(_town_sort, n, 1, _town_sort_order & 2 ? TownSorterByPop : TownSorterByName);
}


static void TownDirectoryWndProc(Window *w, WindowEvent *e)
{
	switch(e->event) {
	case WE_PAINT: {
		int n;
		uint p;
		Town *t;

		if (_town_sort_dirty) {
			_town_sort_dirty = false;
			MakeSortedTownList();
		}

		w->vscroll.count = _num_town_sort;

		DrawWindowWidgets(w);
		DoDrawString(_town_sort_order & 1 ? "\xAA" : "\xA0", _town_sort_order <= 1 ? 88 : 187, 15, 0x10);
			
		p = w->vscroll.pos;
		n = 0;

		while (p < _num_town_sort) {
			t = DEREF_TOWN(_town_sort[p]);
			SET_DPARAM16(0, t->index);
			SET_DPARAM32(1, t->population);
			DrawString(2, 28+n*10, STR_2057, 0);
			p++;
			if (++n == 16)
				break;
		}
	} break;

	case WE_CLICK:
		switch(e->click.widget) {
		case 2: {
			_town_sort_order = _town_sort_order==0 ? 1 : 0;
			_town_sort_dirty = true;
			SetWindowDirty(w);
		} break;

		case 3: {
			_town_sort_order = _town_sort_order==2 ? 3 : 2;
			_town_sort_dirty = true;
			SetWindowDirty(w);
		} break;
		
		case 4: {
			int y = (e->click.pt.y - 28) / 10;
			byte p;
			Town *t;

			if (!IS_INT_INSIDE(y, 0, 16))
				return;
			p = y + w->vscroll.pos;
			if (p < _num_town_sort) {
				t = DEREF_TOWN(_town_sort[p]);
				ScrollMainWindowToTile(t->xy);
			}
			break;
		}
		}
		break;
		
	
	case WE_4:
		SetWindowDirty(w);
		break;
	}	
}

static const WindowDesc _town_directory_desc = {
	-1, -1, 208, 190,
	WC_TOWN_DIRECTORY,0,
	WDF_STD_TOOLTIPS | WDF_STD_BTN | WDF_DEF_WIDGET | WDF_UNCLICK_BUTTONS,
	_town_directory_widgets,
	TownDirectoryWndProc
};


void ShowTownDirectory()
{
	Window *w;

	w = AllocateWindowDescFront(&_town_directory_desc, 0);
	if (w) {
		w->vscroll.cap = 16;
	}
}