/*
 * Copyright (C) 2010 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.android.vending.licensing;

import java.util.Iterator;
import java.util.regex.Pattern;

import android.text.TextUtils;

/**
 * ResponseData from licensing server.
 */
class ResponseData {

    public int responseCode;
    public int nonce;
    public String packageName;
    public String versionCode;
    public String userId;
    public long timestamp;
    /** Response-specific data. */
    public String extra;

    /**
     * Parses response string into ResponseData.
     *
     * @param responseData response data string
     * @throws IllegalArgumentException upon parsing error
     * @return ResponseData object
     */
    public static ResponseData parse(String responseData) {
        // Must parse out main response data and response-specific data.
        TextUtils.StringSplitter splitter = new TextUtils.SimpleStringSplitter(':');
        splitter.setString(responseData);
        Iterator<String> it = splitter.iterator();
        if (!it.hasNext()) {
            throw new IllegalArgumentException("Blank response.");
        }
        final String mainData = it.next();

        // Response-specific (extra) data is optional.
        String extraData = "";
        if (it.hasNext()) {
            extraData = it.next();
        }

        String [] fields = TextUtils.split(mainData, Pattern.quote("|"));
        if (fields.length < 6) {
            throw new IllegalArgumentException("Wrong number of fields.");
        }

        ResponseData data = new ResponseData();
        data.extra = extraData;
        data.responseCode = Integer.parseInt(fields[0]);
        data.nonce = Integer.parseInt(fields[1]);
        data.packageName = fields[2];
        data.versionCode = fields[3];
        // Application-specific user identifier.
        data.userId = fields[4];
        data.timestamp = Long.parseLong(fields[5]);

        return data;
    }

    @Override
    public String toString() {
        return TextUtils.join("|", new Object [] { responseCode, nonce, packageName, versionCode,
            userId, timestamp });
    }
}
