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package com.intellifylearning.models;

import java.util.Date;
import java.util.HashMap;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class Props extends HashMap {

    private static final long serialVersionUID = -3751430322294788170L;

    private static final Logger logger = LoggerFactory.getLogger(Props.class);

    public Props() {
        super(1);
    }

    public Props(Object... kvs) {

        super(kvs == null ? 1 : kvs.length / 2);

        if (kvs != null) {
            if (kvs.length % 2 != 0) {

                logger.warn("Segmentio properties must be initialized with an " +
                        "even number of arguments, like so: [Key, Value, Key, Value]");
            } else {
                if (kvs.length > 1) {
                    for (int i = 0; i < kvs.length; i += 2) {
                        this.put(kvs[i].toString(), kvs[i + 1]);
                    }
                }
            }
        }
    }

    public Props put(String key, Object value) {

        if (allowed(value)) {
            super.put(key, value);
        } else {
            logger.warn(
                    String.format("Key %s value %s not allowed because it is " +
                            "not of type String, Integer, Double, Boolean, or Date.",
                            key, value));
        }

        return this;
    }

    public boolean allowed(Object value) {

        if (value instanceof String ||
                value instanceof Boolean ||
                value instanceof Integer ||
                value instanceof Double ||
                value instanceof Date ||
                value instanceof Props) {
            return true;
        } else {
            return false;
        }
    }
}