/*
 * Con.java
 * Copyright (C) 2003
 * 
 * $Id: Console.java,v 1.2 2004-07-08 15:58:42 hzi Exp $
 */
/*
Copyright (C) 1997-2001 Id Software, Inc.

This program 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; either version 2
of the License, or (at your option) any later version.

This program 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, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

*/
package jake2.client;

import java.io.IOException;
import java.io.RandomAccessFile;
import java.util.Arrays;

import jake2.Defines;
import jake2.Globals;
import jake2.game.Cmd;
import jake2.qcommon.*;
import jake2.util.Vargs;

/**
 * Console
 */
public final class Console extends Globals {
	
	public static xcommand_t ToggleConsole_f = new xcommand_t() {
		public void execute() {
			SCR.EndLoadingPlaque();        // get rid of loading plaque
 
			if (Globals.cl.attractloop) {
				Cbuf.AddText("killserver\n");
				return;
			}
 
			if (Globals.cls.state == Defines.ca_disconnected) {
				// start the demo loop again
				Cbuf.AddText("d1\n");
				return;
			}

			Key.ClearTyping(); 
			Console.ClearNotify();

			if (Globals.cls.key_dest == Defines.key_console) {
				Menu.ForceMenuOff();
				Cvar.Set("paused", "0");
			}
			else {
				Menu.ForceMenuOff();
				Globals.cls.key_dest = Defines.key_console;     

				if (Cvar.VariableValue("maxclients") == 1 && Com.ServerState()!= 0)
					Cvar.Set("paused", "1");
			}
		}
	};

	public static xcommand_t Clear_f = new xcommand_t() {
		public void execute() {
			Arrays.fill(Globals.con.text, (byte)' ');
		}
	};
	public static xcommand_t Dump_f = new xcommand_t() {
		public void execute() {

			int l, x;
			int line;
			RandomAccessFile f;
			byte[] buffer = new byte[1024];
			String name;

			if (Cmd.Argc() != 2) {
				Com.Printf("usage: condump <filename>\n");
				return;
			}

			//Com_sprintf (name, sizeof(name), "%s/%s.txt", FS_Gamedir(), Cmd_Argv(1));
			name = FS.Gamedir() + "/" + Cmd.Argv(1) + ".txt";

			Com.Printf("Dumped console text to " + name + ".\n");
			FS.CreatePath(name);
			f = fopen(name, "rw");
			if (f == null) {
				Com.Printf("ERROR: couldn't open.\n");
				return;
			}

			// skip empty lines
			for (l = con.current - con.totallines + 1; l <= con.current; l++) {
				line = (l % con.totallines) * con.linewidth;
				for (x = 0; x < con.linewidth; x++)
					if (con.text[line + x] != ' ')
						break;
				if (x != con.linewidth)
					break;
			}

			// write the remaining lines
			buffer[con.linewidth] = 0;
			for (; l <= con.current; l++) {
				line = (l % con.totallines) * con.linewidth;
				//strncpy (buffer, line, con.linewidth);
				System.arraycopy(con.text, line, buffer, 0, con.linewidth);
				for (x = con.linewidth - 1; x >= 0; x--) {
					if (buffer[x] == ' ')
						buffer[x] = 0;
					else
						break;
				}
				for (x = 0; buffer[x] != 0; x++)
					buffer[x] &= 0x7f;
				
				buffer[x] = '\n';
				// fprintf (f, "%s\n", buffer);
				try {
					f.write(buffer, 0, x+1);
				} catch (IOException e) {}
			}
		
			fclose(f);

		}
	};
	
	/**
	 * 
	 */
	public static void Init() {
		Globals.con.linewidth = -1;

		CheckResize();
 
		Com.Printf("Console initialized.\n");

		//
		// register our commands
		//
		Globals.con_notifytime = Cvar.Get("con_notifytime", "3", 0);

		Cmd.AddCommand("toggleconsole", ToggleConsole_f);
		Cmd.AddCommand("togglechat", ToggleChat_f);
		Cmd.AddCommand("messagemode", MessageMode_f);
		Cmd.AddCommand("messagemode2", MessageMode2_f);
		Cmd.AddCommand("clear", Clear_f);
		Cmd.AddCommand("condump", Dump_f);
		Globals.con.initialized = true;		
	}

	/**
	 * If the line width has changed, reformat the buffer.
	 */
	public static void CheckResize() {
		int i, j, width, oldwidth, oldtotallines, numlines, numchars;
		byte[] tbuf = new byte[Defines.CON_TEXTSIZE];

		width = (Globals.viddef.width >> 3) - 2;
 
		if (width == Globals.con.linewidth)
			return;

		if (width < 1) {	// video hasn't been initialized yet
			width = 38;
			Globals.con.linewidth = width;
			Globals.con.totallines = Defines.CON_TEXTSIZE / Globals.con.linewidth;
			Arrays.fill(Globals.con.text, (byte)' ');
		} 
		else {
			oldwidth = Globals.con.linewidth;
			Globals.con.linewidth = width;
			oldtotallines = Globals.con.totallines;
			Globals.con.totallines = Defines.CON_TEXTSIZE / Globals.con.linewidth;
			numlines = oldtotallines;
 
			if (Globals.con.totallines < numlines)
				numlines = Globals.con.totallines;

			numchars = oldwidth;
      
			if (Globals.con.linewidth < numchars)
				numchars = Globals.con.linewidth;

			System.arraycopy(Globals.con.text, 0, tbuf, 0, Defines.CON_TEXTSIZE);
			Arrays.fill(Globals.con.text, (byte)' ');
 
			for (i=0 ; i<numlines ; i++) {
				for (j=0 ; j<numchars ; j++) {
					Globals.con.text[(Globals.con.totallines - 1 - i) * Globals.con.linewidth + j] =
						tbuf[((Globals.con.current - i + oldtotallines) % oldtotallines) * oldwidth + j];
				}
			}

			Console.ClearNotify();
		}
 
		Globals.con.current = Globals.con.totallines - 1;
		Globals.con.display = Globals.con.current;
	}
	
	public static void ClearNotify() {
		int i;
		for (i=0 ; i<Defines.NUM_CON_TIMES ; i++)
			Globals.con.times[i] = 0;
	}
	
	static void DrawString(int x, int y, String s) {
		for (int i = 0; i < s.length(); i++) {
			Globals.re.DrawChar(x, y, s.charAt(i));
			x+=8;
		}
	}

	static void DrawAltString(int x, int y, String s) {
		for (int i = 0; i < s.length(); i++) {
			Globals.re.DrawChar(x, y, s.charAt(i) ^ 0x80);
			x+=8;
		}		
	}


	/*
	================
	Con_ToggleChat_f
	================
	*/
	static xcommand_t ToggleChat_f = new xcommand_t() {
		public void execute() {
			Key.ClearTyping();
 
			if (cls.key_dest == key_console) {
				if (cls.state == ca_active) {
					Menu.ForceMenuOff();
					cls.key_dest = key_game;
				}
			} else
				cls.key_dest = key_console;
        
			ClearNotify();
		}
	};
                              
	/*
	================
	Con_MessageMode_f
	================
	*/
	static xcommand_t MessageMode_f = new xcommand_t() {
		public void execute() {
			chat_team = false;
			cls.key_dest = key_message;
		}
	};

	/*
	================
	Con_MessageMode2_f
	================
	*/
	static xcommand_t MessageMode2_f = new xcommand_t() {
		public void execute() {
			chat_team = true;
			cls.key_dest = key_message;
		}
	};

	/*
	===============
	Con_Linefeed
	===============
	*/
	static void Linefeed() {
		Globals.con.x = 0;
		if (Globals.con.display == Globals.con.current)
			Globals.con.display++;
		Globals.con.current++;
		int i = (Globals.con.current%Globals.con.totallines)*Globals.con.linewidth;
		int e = i + Globals.con.linewidth;
		while (i++ < e) Globals.con.text[i] = ' ';
	}

	/*
	================
	Con_Print

	Handles cursor positioning, line wrapping, etc
	All console printing must go through this in order to be logged to disk
	If no console is visible, the text will appear at the top of the game window
	================
	*/
	private static int cr;
	public static void Print(String txt) {
		int y;
		int c, l;
		int mask;
		int txtpos = 0;

		if (!con.initialized) return;

		if (txt.charAt(0) == 1 || txt.charAt(0) == 2) {
			mask = 128;             // go to colored text
			txtpos++;
		} else mask = 0;

		while ( txtpos < txt.length() ) {
			c = txt.charAt(txtpos);
			// count word length
			for (l=0 ; l < con.linewidth && l < (txt.length() - txtpos) ; l++)
				if ( txt.charAt(l + txtpos) <= ' ') break;

			// word wrap
			if (l != con.linewidth && (con.x + l > con.linewidth) )
				con.x = 0;

			txtpos++;
	
			if (cr != 0) {
				con.current--;
				cr = 0;
			}
   
			if (con.x == 0) {
				Console.Linefeed();
				// mark time for transparent overlay
				if (con.current >= 0)
					con.times[con.current % NUM_CON_TIMES] = cls.realtime;
			}

			switch (c) {
				case '\n':
					con.x = 0;
					break;

				case '\r':
					con.x = 0;
					cr = 1;
					break;

				default:        // display character and advance
					y = con.current % con.totallines;
					con.text[y*con.linewidth+con.x] = (byte)(c | mask | con.ormask);
					con.x++;
					if (con.x >= con.linewidth)
						con.x = 0;
					break;
			}               
		}
	}

	/*
	==============
	Con_CenteredPrint
	==============
	*/
	static void CenteredPrint(String text) {
		int l = text.length();
		l = (con.linewidth-l)/2;
		if (l < 0) l = 0;
		
		StringBuffer sb = new StringBuffer(1024);
		for (int i = 0; i < l; i++) sb.append(' ');
		sb.append(text);
		sb.append('\n');
		
		sb.setLength(1024);

		Console.Print(sb.toString());
	}
 
	/*
	==============================================================================
 
	DRAWING
 
	==============================================================================
	*/
  
	 /*
	================
	Con_DrawInput
 
	The input line scrolls horizontally if typing goes beyond the right edge
	================
	*/
	static void DrawInput() {
		int i;
		byte[] text;
		int start = 0;
 
		if (cls.key_dest == key_menu)
			return;
		if (cls.key_dest != key_console && cls.state == ca_active)
			return;         // don't draw anything (always draw if not active)
 
		text = key_lines[edit_line];
         
		// add the cursor frame
		text[key_linepos] = (byte)(10+((int)(cls.realtime>>8)&1));
         
		// fill out remainder with spaces
		for (i=key_linepos+1 ; i< con.linewidth ; i++)
			text[i] = ' ';
                 
		// prestep if horizontally scrolling
		if (key_linepos >= con.linewidth)
			start += 1 + key_linepos - con.linewidth;
                 
		// draw it
//		y = con.vislines-16;
 
		for (i=0 ; i<con.linewidth ; i++)
			re.DrawChar ( (i+1)<<3, con.vislines - 22, text[i]);
 
		// remove cursor
		key_lines[edit_line][key_linepos] = 0;
	}
 
 
	/*
	================
	Con_DrawNotify
	
	Draws the last few lines of output transparently over the game top
	================
	*/
	static void DrawNotify() {
		int x, v;
		int text;
		int i;
		int time;
		String s;
		int skip;
 
		v = 0;
		for (i= con.current-NUM_CON_TIMES+1 ; i<=con.current ; i++) {
			if (i < 0) continue;
			
			time = (int)con.times[i % NUM_CON_TIMES];
			if (time == 0) continue;
			
			time = (int)(cls.realtime - time);
			if (time > con_notifytime.value*1000) continue;
			
			text = (i % con.totallines)*con.linewidth;
                 
			for (x = 0 ; x < con.linewidth ; x++)
				re.DrawChar( (x+1)<<3, v, con.text[text+x]);

			v += 8;
		}
 
		if (cls.key_dest == key_message) {
			if (chat_team) {
				DrawString(8, v, "say_team:");
				skip = 11;
			} else {
				DrawString (8, v, "say:");
				skip = 5;
			}
 
			s = chat_buffer;
			if (chat_bufferlen > (viddef.width>>3)-(skip+1))
				s = s.substring(chat_bufferlen - ((viddef.width>>3)-(skip+1)));
				
			for (x = 0; x < s.length(); x++) {
				re.DrawChar( (x+skip)<<3, v, s.charAt(x));
			}
			re.DrawChar( (x+skip)<<3, v, (int)(10+((cls.realtime>>8)&1)));
			v += 8;
		}
        
		if (v != 0) {
			SCR.AddDirtyPoint(0,0);
			SCR.AddDirtyPoint(viddef.width-1, v);
		}
	}
 
	/*
	================
	Con_DrawConsole
 
	Draws the console with the solid background
	================
	*/
	static void DrawConsole(float frac) {
		int i, j, x, y, n;
		int rows;
		int text;
		int row;
		int lines;
		String version;
		String dlbar;

		lines = (int)(viddef.height * frac);
		if (lines <= 0)
			return;
 
		if (lines > viddef.height)
			lines = viddef.height;
 
		// draw the background
		re.DrawStretchPic(0, -viddef.height+lines, viddef.width, viddef.height, "conback");
		SCR.AddDirtyPoint(0,0);
		SCR.AddDirtyPoint(viddef.width-1,lines-1);
 
		version = Com.sprintf("v%4.2f", new Vargs(1).add(VERSION));
		for (x=0 ; x<5 ; x++)
			re.DrawChar (viddef.width-44+x*8, lines-12, 128 + version.charAt(x));
 
		// draw the text
		con.vislines = lines;
         
		rows = (lines-22)>>3;           // rows of text to draw
 
		y = lines - 30;

		// draw from the bottom up
		if (con.display != con.current) {
			// draw arrows to show the buffer is backscrolled
			for (x=0 ; x<con.linewidth ; x+=4)
				re.DrawChar ( (x+1)<<3, y, '^');
         
			y -= 8;
			rows--;
		}
         
		row = con.display;
		for (i=0 ; i<rows ; i++, y-=8, row--) {
			if (row < 0)
				break;
			if (con.current - row >= con.totallines)
				break;          // past scrollback wrap point
                         
			int first = (row % con.totallines)*con.linewidth; 
 
			for (x=0 ; x<con.linewidth ; x++)
				re.DrawChar( (x+1)<<3, y, con.text[x+first]);
		}
 
		//ZOID
		// draw the download bar
		// figure out width
		if (cls.download != null) {
			if ((text = cls.downloadname.lastIndexOf('/')) != 0)
				text++;
			else
				text = 0;
 
			x = con.linewidth - ((con.linewidth * 7) / 40);
			y = x - (cls.downloadname.length()-text) - 8;
			i = con.linewidth/3;
			if (cls.downloadname.length()-text > i) {
				y = x - i - 11;
				int end = text + i - 1;;
				dlbar = cls.downloadname.substring(text, end);
				dlbar += "...";
			} else {
				dlbar = cls.downloadname.substring(text);
			}
			dlbar += ": ";
			dlbar += (char)0x80;

			// where's the dot go?
			if (cls.downloadpercent == 0)
				n = 0;
			else
				n = y * cls.downloadpercent / 100;

			StringBuffer sb = new StringBuffer(dlbar);
			sb.ensureCapacity(1024);                         
			for (j = 0; j < y; j++) {
				if (j == n)
					sb.append((char)0x83);
				else
					sb.append((char)0x81);
			}
			sb.append((char)0x82);
			
			dlbar = sb.toString();
			dlbar += Com.sprintf(" %02d%%", new Vargs(1).add(cls.downloadpercent));
				 
			// draw it
			y = con.vislines-12;
			for (i = 0; i < dlbar.length(); i++)
				re.DrawChar ( (i+1)<<3, y, dlbar.charAt(i));
		}
		//ZOID
 
		// draw the input prompt, user text, and cursor if desired
		DrawInput();
	}	
}