package chat.server.call;

import java.math.BigDecimal;
import java.util.Date;

public class JSONObject {
	
    private StringBuilder content;
    private boolean empty;

    public JSONObject() {
        content = new StringBuilder();
        empty = true;
    }

    public void beginObject() {
        if (!empty) {
            content.append(", ");
        }

        content.append("{");
        empty = true;
    }

    public void beginObject(String name) {
        if (!empty) {
            content.append(", ");
        }

        content.append("\"" + toLower(name) + "\": {");
        empty = true;
    }

	public void endObject() {
        content.append("}");
        empty = false;
    }

    public void beginArray() {
        if (!empty) {
            content.append(", ");
        }

        content.append("[");
        empty = true;
    }

    public void beginArray(String name) {
        if (!empty) {
            content.append(", ");
        }

        content.append("\"" + toLower(name) + "\": [");
        empty = true;
    }

    public void endArray() {
        content.append("]");
        empty = false;
    }

    public void addValue(String name, String value) {
        if (!empty) {
            content.append(", ");
        }

        content.append("\"" + toLower(name) + "\": \"" + value + "\"");
        empty = false;
    }
    
    public void addValue(String name, int value) {
        if (!empty) {
            content.append(", ");
        }

        content.append("\"" + toLower(name) + "\": " + value);
        empty = false;
    }

    public void addValue(String name, BigDecimal value) {
        if (!empty) {
            content.append(", ");
        }

        content.append("\"" + toLower(name) + "\": " + value);
        empty = false;
    }

    public void addValue(String name, boolean value) {
        if (!empty) {
            content.append(", ");
        }

        content.append("\"" + toLower(name) + "\": " + (value ? "true" : "false"));
        empty = false;
    }

    public void addValue(String name, Date value) {
        if (!empty) {
            content.append(", ");
        }

        content.append("\"" + toLower(name) + "\": \"" + value + "\"");
        empty = false;
    }

    public void addValue(String value) {
        if (!empty) {
            content.append(", ");
        }

        content.append("\"" + value + "\"");
        empty = false;
    }
    public void addValue(int value) {
        if (!empty) {
            content.append(", ");
        }

        content.append(value);
        empty = false;
    }

    public void addValue(BigDecimal value) {
        if (!empty) {
            content.append(", ");
        }

        content.append(value);
        empty = false;
    }

    public void addValue(boolean value) {
        if (!empty) {
            content.append(", ");
        }

        content.append(value ? "true" : "false");
        empty = false;
    }

    public void addValue(Date value) {
        if (!empty) {
            content.append(", ");
        }

        content.append("\"" + value + "\"");
        empty = false;
    }

    private String toLower(String name) {
    	if (name == null) {
    		return "empty";
    	}
    	
    	return name.toLowerCase();
	}

	@Override
	public String toString() {
		return content.toString();
	}
    
}