/*
 * Copyright (C) 2011 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 android.net.wifi.p2p;

import android.annotation.UnsupportedAppUsage;

/**
 * A class representing a Wi-Fi p2p provisional discovery request/response
 * See {@link #WifiP2pProvDiscEvent} for supported types
 *
 * @hide
 */
public class WifiP2pProvDiscEvent {

    private static final String TAG = "WifiP2pProvDiscEvent";

    public static final int PBC_REQ     = 1;
    public static final int PBC_RSP     = 2;
    public static final int ENTER_PIN   = 3;
    public static final int SHOW_PIN    = 4;

    /* One of PBC_REQ, PBC_RSP, ENTER_PIN or SHOW_PIN */
    @UnsupportedAppUsage
    public int event;

    @UnsupportedAppUsage
    public WifiP2pDevice device;

    /* Valid when event = SHOW_PIN */
    @UnsupportedAppUsage
    public String pin;

    @UnsupportedAppUsage
    public WifiP2pProvDiscEvent() {
        device = new WifiP2pDevice();
    }

    /**
     * @param string formats supported include
     *
     *  P2P-PROV-DISC-PBC-REQ 42:fc:89:e1:e2:27
     *  P2P-PROV-DISC-PBC-RESP 02:12:47:f2:5a:36
     *  P2P-PROV-DISC-ENTER-PIN 42:fc:89:e1:e2:27
     *  P2P-PROV-DISC-SHOW-PIN 42:fc:89:e1:e2:27 44490607
     *
     *  Note: The events formats can be looked up in the wpa_supplicant code
     * @hide
     */
    public WifiP2pProvDiscEvent(String string) throws IllegalArgumentException {
        String[] tokens = string.split(" ");

        if (tokens.length < 2) {
            throw new IllegalArgumentException("Malformed event " + string);
        }

        if (tokens[0].endsWith("PBC-REQ")) event = PBC_REQ;
        else if (tokens[0].endsWith("PBC-RESP")) event = PBC_RSP;
        else if (tokens[0].endsWith("ENTER-PIN")) event = ENTER_PIN;
        else if (tokens[0].endsWith("SHOW-PIN")) event = SHOW_PIN;
        else throw new IllegalArgumentException("Malformed event " + string);


        device = new WifiP2pDevice();
        device.deviceAddress = tokens[1];

        if (event == SHOW_PIN) {
            pin = tokens[2];
        }
    }

    public String toString() {
        StringBuffer sbuf = new StringBuffer();
        sbuf.append(device);
        sbuf.append("\n event: ").append(event);
        sbuf.append("\n pin: ").append(pin);
        return sbuf.toString();
    }
}