/*
 * The MIT License (MIT)
 *
 * Copyright (c) 2012-2014 lacolaco.net
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

package net.lacolaco.smileessence.data;

import com.github.gfx.android.orma.annotation.Column;
import com.github.gfx.android.orma.annotation.OnConflict;
import com.github.gfx.android.orma.annotation.PrimaryKey;
import com.github.gfx.android.orma.annotation.Table;

import java.util.*;
import java.util.regex.Pattern;

@Table
public class ExtractionWord {
    private static Set<ExtractionWord> cache;
    private static final Object mutex = new Object();
    private Pattern pattern;

    @PrimaryKey
    String patternString;

    // --------------------- static methods ---------------------
    public static List<ExtractionWord> cached() {
        synchronized(mutex) {
            return new ArrayList<>(cache);
        }
    }

    public static synchronized void load() {
        synchronized(mutex) {
            OrmaDatabase orma = OrmaHolder.getORMA();
            cache = new HashSet<>(orma.selectFromExtractionWord().toList());
        }
    }

    private static ExtractionWord_Relation relation() {
        return OrmaHolder.getORMA().relationOfExtractionWord();
    }

    public static synchronized ExtractionWord add(String patternString) {
        ExtractionWord extractionWord = new ExtractionWord(patternString);
        relation().upserter().execute(extractionWord);
        synchronized(mutex) {
            cache.add(extractionWord);
        }
        return extractionWord;
    }

    public ExtractionWord() { }

    private ExtractionWord(String patternString) {
        this.patternString = patternString;
    }

    public Pattern getPattern() {
        if (pattern == null)
            pattern = Pattern.compile(patternString);
        return pattern;
    }

    public String getPatternString() {
        return patternString;
    }

    public void remove() {
        relation().deleter().patternStringEq(patternString).execute();
        cache.remove(this);
    }
}