package net.sourceforge.pain.plugin.social;


import net.sourceforge.pain.util.*;

import java.io.*;
import java.util.*;

public final class SocialParser {
	public static final int STATE_WAIT_SOCIAL = 1;
	public static final int STATE_WAIT_NAME = 2;
	public static final int STATE_INSIDE_BLOCK = 3;

	private int state = STATE_WAIT_SOCIAL;

	public Collection parseSocials(BufferedReader reader) throws Exception {
		Collection result = new LinkedList();
		SocialEntry entry = null;
		boolean hasTemplates = false;

		while (true) {
			String line = reader.readLine();

			//				Log.debug("line:" + line + " state:" + state);
			if (line == null) {
				throw new RuntimeException("unexpected end of file!");
			}
			line = line.trim();
			switch (state) {
				case STATE_WAIT_SOCIAL:
					if (line.equals("#SOCIAL")) {
						entry = new SocialEntry();
						state = STATE_WAIT_NAME;
					} else if (line.equals("#$")) {
						return result;
					}
					break;

				case STATE_WAIT_NAME:
					if (line.startsWith("name")) {
						String name = line.substring(4).trim();

						if (name.length() == 0) {
							throw new RuntimeException("wrong social name format!:" + line);
						}
						entry.tag = name;
						state = STATE_INSIDE_BLOCK;
					} else if (line.length() > 0) {
						throw new RuntimeException("unexpected line in social  STATE_WAIT_NAME:" + line);
					}
					break;

				case STATE_INSIDE_BLOCK:
					int templateType = -1;

					if (line.equals("end")) {
						if (hasTemplates) {
							result.add(entry);
							state = STATE_WAIT_SOCIAL;
						} else {
							Log.debug("social :" + entry.tag + " has no active templates, skipping");
						}
					} else if (line.startsWith("found_char")) {
						templateType = SocialEntry.FOUND_CHAR;
					} else if (line.startsWith("found_vict")) {
						templateType = SocialEntry.FOUND_VICT;
					} else if (line.startsWith("found_notvict")) {
						templateType = SocialEntry.FOUND_NOVICT;
					} else if (line.startsWith("notfound_char")) {
						templateType = SocialEntry.NOT_FOUND_CHAR;
					} else if (line.startsWith("noarg_char")) {
						templateType = SocialEntry.NOARG_CHAR;
					} else if (line.startsWith("noarg_room")) {
						templateType = SocialEntry.NOARG_ROOM;
					} else if (line.startsWith("self_char")) {
						templateType = SocialEntry.SELF_CHAR;
					} else if (line.startsWith("self_room")) {
						templateType = SocialEntry.SELF_SPACE;
					}
					if (templateType != -1) {
						int start = line.indexOf(' ');
						int end = line.indexOf('~');

						if (start < 9 || end < start + 1) {
							throw new RuntimeException("wrong template line:" + line);
						}
						hasTemplates = true;
						entry.template[templateType] = line.substring(start + 1, end);
					}
					break;

				default:
					throw new RuntimeException("BUG!");
			}
		}
	}
}