package com.skiwi.tessutils4j.data;

import com.skiwi.tessutils4j.Objects;
import java.io.InvalidObjectException;
import java.io.ObjectInputStream;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.List;

/**
 *
 * @author Frank van Heeswijk
 */
public class Word implements Serializable {
    private static final long serialVersionUID = 9084633893292833L;

    private final String word;
    private final float confidence;
    private final FontAttributes fontAttributes;
    private final boolean fromDictionary;
    private final boolean numeric;
    private final Rectangle boundingBox;
    private final Rectangle baseline;
    private final List<Symbol> symbols;

    private Word(final String word, final float confidence, final FontAttributes fontAttributes, final boolean fromDictionary, final boolean numeric, final Rectangle boundingBox, final Rectangle baseline, final List<Symbol> symbols) {
        this.word = Objects.requireNonNull(word, "word");
        this.confidence = confidence;
        this.fontAttributes = Objects.requireNonNull(fontAttributes, "fontAttributes");
        this.fromDictionary = fromDictionary;
        this.numeric = numeric;
        this.boundingBox = Objects.requireNonNull(boundingBox, "boundingBox");
        this.baseline = Objects.requireNonNull(baseline, "baseline");
        this.symbols = Objects.requireNonNull(symbols, "symbols");
    }

    public String getWord() {
        return word;
    }

    public float getConfidence() {
        return confidence;
    }

    public FontAttributes getFontAttributes() {
        return fontAttributes;
    }

    public boolean isFromDictionary() {
        return fromDictionary;
    }

    public boolean isNumeric() {
        return numeric;
    }

    public Rectangle getBoundingBox() {
        return boundingBox;
    }

    public Rectangle getBaseline() {
        return baseline;
    }

    public List<Symbol> getSymbols() {
        return symbols;
    }

    public static class WordBuilder {
        private final String word;
        private final float confidence;
        private final FontAttributes fontAttributes;
        private final boolean fromDictionary;
        private final boolean numeric;
        private final Rectangle boundingBox;
        private final Rectangle baseline;
        private final List<Symbol> symbols = new ArrayList<Symbol>();

        private WordBuilder(final String word, final float confidence, final FontAttributes fontAttributes, final boolean fromDictionary, final boolean numeric, final Rectangle boundingBox, final Rectangle baseline) {
            this.word = word;
            this.confidence = confidence;
            this.fontAttributes = fontAttributes;
            this.fromDictionary = fromDictionary;
            this.numeric = numeric;
            this.boundingBox = boundingBox;
            this.baseline = baseline;
        }

        public WordBuilder addSymbol(final Symbol symbol) {
            symbols.add(Objects.requireNonNull(symbol, "symbol"));
            return this;
        }

        public Word build() {
            return new Word(word, confidence, fontAttributes, fromDictionary, numeric, boundingBox, baseline, symbols);
        }
    }

    private Object writeReplace() {
        return new SerializationProxy(this);
    }

    private void readObject(final ObjectInputStream stream) throws InvalidObjectException {
        throw new InvalidObjectException("Proxy required");
    }

    private static class SerializationProxy implements Serializable {
        private static final long serialVersionUID = 794943938877393932L;

        private final String word;
        private final float confidence;
        private final FontAttributes fontAttributes;
        private final boolean fromDictionary;
        private final boolean numeric;
        private final Rectangle boundingBox;
        private final Rectangle baseline;
        private final List<Symbol> symbols;

        private SerializationProxy(final Word word) {
            this.word = word.word;
            this.confidence = word.confidence;
            this.fontAttributes = word.fontAttributes;
            this.fromDictionary = word.fromDictionary;
            this.numeric = word.numeric;
            this.boundingBox = word.boundingBox;
            this.baseline = word.baseline;
            this.symbols = word.symbols;
        }

        private Object readResolve() {
            return new Word(word, confidence, fontAttributes, fromDictionary, numeric, boundingBox, baseline, symbols);
        }
    }
}