/*
 * Copyright (C) 2015 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.phone.vvm.omtp;

import java.util.HashMap;
import java.util.Map;

/**
 * Wrapper class to hold relevant OMTP constants as defined in the OMTP spec.
 * <p>
 * In essence this is a programmatic representation of the relevant portions of OMTP spec.
 */
public class OmtpConstants {
    public static final String SMS_FIELD_SEPARATOR = ";";
    public static final String SMS_KEY_VALUE_SEPARATOR = "=";
    public static final String SMS_PREFIX_SEPARATOR = ":";

    public static final String CLIENT_PREFIX = "//VVM";
    public static final String SYNC_SMS_PREFIX = CLIENT_PREFIX + ":SYNC:";
    public static final String STATUS_SMS_PREFIX = CLIENT_PREFIX + ":STATUS:";

    // This is the format designated by the OMTP spec.
    public static final String DATE_TIME_FORMAT = "dd/MM/yyyy HH:mm Z";

    /** OMTP protocol versions. */
    public static final String PROTOCOL_VERSION1_1 = "11";
    public static final String PROTOCOL_VERSION1_2 = "12";
    public static final String PROTOCOL_VERSION1_3 = "13";

    ///////////////////////// Client/Mobile originated SMS //////////////////////

    /** Mobile Originated requests */
    public static final String ACTIVATE_REQUEST = "Activate";
    public static final String DEACTIVATE_REQUEST = "Deactivate";
    public static final String STATUS_REQUEST = "Status";

    /** fields that can be present in a Mobile Originated OMTP SMS */
    public static final String CLIENT_TYPE = "ct";
    public static final String APPLICATION_PORT = "pt";
    public static final String PROTOCOL_VERSION = "pv";


    //////////////////////////////// Sync SMS fields ////////////////////////////

    /**
     * Sync SMS fields.
     * <p>
     * Each string constant is the field's key in the SMS body which is used by the parser to
     * identify the field's value, if present, in the SMS body.
     */

    /**
     * The event that triggered this SYNC SMS.
     * See {@link OmtpConstants#SYNC_TRIGGER_EVENT_VALUES}
     */
    public static final String SYNC_TRIGGER_EVENT = "ev";
    public static final String MESSAGE_UID = "id";
    public static final String MESSAGE_LENGTH = "l";
    public static final String NUM_MESSAGE_COUNT = "c";
    /** See {@link OmtpConstants#CONTENT_TYPE_VALUES} */
    public static final String CONTENT_TYPE = "t";
    public static final String SENDER = "s";
    public static final String TIME = "dt";

    /**
     * SYNC message trigger events.
     * <p>
     * These are the possible values of {@link OmtpConstants#SYNC_TRIGGER_EVENT}.
     */
    public static final String NEW_MESSAGE = "NM";
    public static final String MAILBOX_UPDATE = "MBU";
    public static final String GREETINGS_UPDATE = "GU";

    public static final String[] SYNC_TRIGGER_EVENT_VALUES = {
        NEW_MESSAGE,
        MAILBOX_UPDATE,
        GREETINGS_UPDATE
    };

    /**
     * Content types supported by OMTP VVM.
     * <p>
     * These are the possible values of {@link OmtpConstants#CONTENT_TYPE}.
     */
    public static final String VOICE = "v";
    public static final String VIDEO = "o";
    public static final String FAX = "f";
    /** Voice message deposited by an external application */
    public static final String INFOTAINMENT = "i";
    /** Empty Call Capture - i.e. voicemail with no voice message. */
    public static final String ECC = "e";

    public static final String[] CONTENT_TYPE_VALUES = {VOICE, VIDEO, FAX, INFOTAINMENT, ECC};

    ////////////////////////////// Status SMS fields ////////////////////////////

    /**
     * Status SMS fields.
     * <p>
     * Each string constant is the field's key in the SMS body which is used by the parser to
     * identify the field's value, if present, in the SMS body.
     */
    /** See {@link OmtpConstants#PROVISIONING_STATUS_VALUES} */
    public static final String PROVISIONING_STATUS = "st";
    /** See {@link OmtpConstants#RETURN_CODE_VALUES} */
    public static final String RETURN_CODE = "rc";
    /** URL to send users to for activation VVM */
    public static final String SUBSCRIPTION_URL = "rs";
    /** IMAP4/SMTP server IP address or fully qualified domain name */
    public static final String SERVER_ADDRESS = "srv";
    /** Phone number to access voicemails through Telephony User Interface */
    public static final String TUI_ACCESS_NUMBER = "tui";
    /** Number to send client origination SMS */
    public static final String CLIENT_SMS_DESTINATION_NUMBER = "dn";
    public static final String IMAP_PORT = "ipt";
    public static final String IMAP_USER_NAME = "u";
    public static final String IMAP_PASSWORD = "pw";
    public static final String SMTP_PORT = "spt";
    public static final String SMTP_USER_NAME = "smtp_u";
    public static final String SMTP_PASSWORD = "smtp_pw";

    /**
     * User provisioning status values.
     * <p>
     * Referred by {@link OmtpConstants#PROVISIONING_STATUS}.
     */
    // TODO: As per the spec the code could be either be with or w/o quotes  = "N"/N). Currently
    // this only handles the w/o quotes values.
    public static final String SUBSCRIBER_NEW = "N";
    public static final String SUBSCRIBER_READY = "R";
    public static final String SUBSCRIBER_PROVISIONED = "P";
    public static final String SUBSCRIBER_UNKNOWN = "U";
    public static final String SUBSCRIBER_BLOCKED = "B";

    public static final String[] PROVISIONING_STATUS_VALUES = {
        SUBSCRIBER_NEW,
        SUBSCRIBER_READY,
        SUBSCRIBER_PROVISIONED,
        SUBSCRIBER_UNKNOWN,
        SUBSCRIBER_BLOCKED
    };

    /**
     * The return code included in a status message.
     * <p>
     * These are the possible values of {@link OmtpConstants#RETURN_CODE}.
     */
    public static final String SUCCESS = "0";
    public static final String SYSTEM_ERROR = "1";
    public static final String SUBSCRIBER_ERROR = "2";
    public static final String MAILBOX_UNKNOWN = "3";
    public static final String VVM_NOT_ACTIVATED = "4";
    public static final String VVM_NOT_PROVISIONED = "5";
    public static final String VVM_CLIENT_UKNOWN = "6";
    public static final String VVM_MAILBOX_NOT_INITIALIZED = "7";

    public static final String[] RETURN_CODE_VALUES = {
        SUCCESS,
        SYSTEM_ERROR,
        SUBSCRIBER_ERROR,
        MAILBOX_UNKNOWN,
        VVM_NOT_ACTIVATED,
        VVM_NOT_PROVISIONED,
        VVM_CLIENT_UKNOWN,
        VVM_MAILBOX_NOT_INITIALIZED,
    };

    /**
     * A map of all the field keys to the possible values they can have.
     */
    public static final Map<String, String[]> possibleValuesMap = new HashMap<String, String[]>() {{
        put(SYNC_TRIGGER_EVENT, SYNC_TRIGGER_EVENT_VALUES);
        put(CONTENT_TYPE, CONTENT_TYPE_VALUES);
        put(PROVISIONING_STATUS, PROVISIONING_STATUS_VALUES);
        put(RETURN_CODE, RETURN_CODE_VALUES);
    }};

    /** Indicates the client is Google visual voicemail version 1.0. */
    public static final String CLIENT_TYPE_GOOGLE_10 = "google.vvm.10";
}