BayernMessenger/vector/src/main/java/im/vector/riotredesign/features/notifications/NotifiableEventResolver.kt

/*
 * Copyright 2019 New Vector Ltd
 *
 * 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 im.vector.riotredesign.features.notifications

import android.content.Context
import im.vector.matrix.android.api.session.Session
import im.vector.matrix.android.api.session.events.model.Event
import im.vector.riotredesign.core.preference.BingRule

// TODO Remove
class RoomState {

}


/**
 * The notifiable event resolver is able to create a NotifiableEvent (view model for notifications) from an sdk Event.
 * It is used as a bridge between the Event Thread and the NotificationDrawerManager.
 * The NotifiableEventResolver is the only aware of session/store, the NotificationDrawerManager has no knowledge of that,
 * this pattern allow decoupling between the object responsible of displaying notifications and the matrix sdk.
 */
class NotifiableEventResolver(val context: Context) {

    //private val eventDisplay = RiotEventDisplay(context)

    fun resolveEvent(event: Event, roomState: RoomState?, bingRule: BingRule?, session: Session): NotifiableEvent? {
        // TODO
        return null
        /*
        val store = session.dataHandler.store
        if (store == null) {
            Log.e("## NotifiableEventResolver, unable to get store")
            //TODO notify somehow that something did fail?
            return null
        }

        when (event.type) {
            EventType.MESSAGE -> {
                return resolveMessageEvent(event, bingRule, session, store)
            }
            EventType.ENCRYPTED -> {
                val messageEvent = resolveMessageEvent(event, bingRule, session, store)
                messageEvent?.lockScreenVisibility = NotificationCompat.VISIBILITY_PRIVATE
                return messageEvent
            }
            EventType.STATE_ROOM_MEMBER -> {
                return resolveStateRoomEvent(event, bingRule, session, store)
            }
            else -> {

                //If the event can be displayed, display it as is
                eventDisplay.getTextualDisplay(event, roomState)?.toString()?.let { body ->
                    return SimpleNotifiableEvent(
                            session.myUserId,
                            eventId = event.eventId,
                            noisy = bingRule?.notificationSound != null,
                            timestamp = event.originServerTs,
                            description = body,
                            soundName = bingRule?.notificationSound,
                            title = context.getString(R.string.notification_unknown_new_event),
                            type = event.type)
                }

                //Unsupported event
                Timber.w("NotifiableEventResolver Received an unsupported event matching a bing rule")
                return null
            }
        }
        */
    }

    /*
    private fun resolveMessageEvent(event: Event, bingRule: BingRule?, session: MXSession, store: IMXStore): NotifiableEvent? {
        //If we are here, that means that the event should be notified to the user, we check now how it should be presented (sound)
        val soundName = bingRule?.notificationSound
        val noisy = bingRule?.notificationSound != null

        //The event only contains an eventId, and roomId (type is m.room.*) , we need to get the displayable content (names, avatar, text, etc...)
        val room = store.getRoom(event.roomId /*roomID cannot be null (see Matrix SDK code)*/)

        if (room == null) {
            Timber.e("## Unable to resolve room for eventId [${event.eventId}] and roomID [${event.roomId}]")
            // Ok room is not known in store, but we can still display something
            val body = eventDisplay.getTextualDisplay(event, null)?.toString()
                    ?: context.getString(R.string.notification_unknown_new_event)
            val roomName = context.getString(R.string.notification_unknown_room_name)
            val senderDisplayName = event.sender ?: ""

            val notifiableEvent = NotifiableMessageEvent(
                    eventId = event.eventId,
                    timestamp = event.originServerTs,
                    noisy = noisy,
                    senderName = senderDisplayName,
                    senderId = event.sender,
                    body = body,
                    roomId = event.roomId,
                    roomName = roomName)

            notifiableEvent.matrixID = session.myUserId
            notifiableEvent.soundName = soundName

            return notifiableEvent
        } else {

            val body = eventDisplay.getTextualDisplay(event, room.state)?.toString()
                    ?: context.getString(R.string.notification_unknown_new_event)
            val roomName = room.getRoomDisplayName(context)
            val senderDisplayName = room.state.getMemberName(event.sender) ?: event.sender ?: ""

            val notifiableEvent = NotifiableMessageEvent(
                    eventId = event.eventId,
                    timestamp = event.originServerTs,
                    noisy = noisy,
                    senderName = senderDisplayName,
                    senderId = event.sender,
                    body = body,
                    roomId = event.roomId,
                    roomName = roomName,
                    roomIsDirect = room.isDirect)

            notifiableEvent.matrixID = session.myUserId
            notifiableEvent.soundName = soundName


            val roomAvatarPath = session.mediaCache?.thumbnailCacheFile(room.avatarUrl, 50)
            if (roomAvatarPath != null) {
                notifiableEvent.roomAvatarPath = roomAvatarPath.path
            } else {
                // prepare for the next time
                session.mediaCache?.loadAvatarThumbnail(session.homeServerConfig, ImageView(context), room.avatarUrl, 50)
            }

            room.state.getMember(event.sender)?.avatarUrl?.let {
                val size = context.resources.getDimensionPixelSize(R.dimen.profile_avatar_size)
                val userAvatarUrlPath = session.mediaCache?.thumbnailCacheFile(it, size)
                if (userAvatarUrlPath != null) {
                    notifiableEvent.senderAvatarPath = userAvatarUrlPath.path
                } else {
                    // prepare for the next time
                    session.mediaCache?.loadAvatarThumbnail(session.homeServerConfig, ImageView(context), it, size)
                }
            }

            return notifiableEvent
        }
    }

    private fun resolveStateRoomEvent(event: Event, bingRule: BingRule?, session: MXSession, store: IMXStore): NotifiableEvent? {
        if (RoomMember.MEMBERSHIP_INVITE == event.contentAsJsonObject?.getAsJsonPrimitive("membership")?.asString) {
            val room = store.getRoom(event.roomId /*roomID cannot be null (see Matrix SDK code)*/)
            val body = eventDisplay.getTextualDisplay(event, room.state)?.toString()
                    ?: context.getString(R.string.notification_new_invitation)
            return InviteNotifiableEvent(
                    session.myUserId,
                    eventId = event.eventId,
                    roomId = event.roomId,
                    timestamp = event.originServerTs,
                    noisy = bingRule?.notificationSound != null,
                    title = context.getString(R.string.notification_new_invitation),
                    description = body,
                    soundName = bingRule?.notificationSound,
                    type = event.type,
                    isPushGatewayEvent = false)
        } else {
            Timber.e("## unsupported notifiable event for eventId [${event.eventId}]")
            if (BuildConfig.LOW_PRIVACY_LOG_ENABLE) {
                Timber.e("## unsupported notifiable event for event [${event}]")
            }
            //TODO generic handling?
        }
        return null
    }    */
}