amethyst/app/src/main/java/com/vitorpamplona/amethyst/ui/dal/ChatroomFeedFilter.kt

53 wiersze
2.2 KiB
Kotlin

/**
* Copyright (c) 2024 Vitor Pamplona
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
* Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
package com.vitorpamplona.amethyst.ui.dal
import com.vitorpamplona.amethyst.model.Account
import com.vitorpamplona.amethyst.model.Note
import com.vitorpamplona.quartz.events.ChatroomKey
class ChatroomFeedFilter(val withUser: ChatroomKey, val account: Account) :
AdditiveFeedFilter<Note>() {
// returns the last Note of each user.
override fun feedKey(): String {
return withUser.hashCode().toString()
}
override fun feed(): List<Note> {
val messages = account.userProfile().privateChatrooms[withUser] ?: return emptyList()
return messages.roomMessages
.filter { account.isAcceptable(it) }
.sortedWith(compareBy({ it.createdAt() }, { it.idHex }))
.reversed()
}
override fun applyFilter(collection: Set<Note>): Set<Note> {
val messages = account.userProfile().privateChatrooms[withUser] ?: return emptySet()
return collection.filter { it in messages.roomMessages && account.isAcceptable(it) }.toSet()
}
override fun sort(collection: Set<Note>): List<Note> {
return collection.sortedWith(DefaultFeedOrder)
}
}