89 lines
2.4 KiB
Swift
89 lines
2.4 KiB
Swift
import SwiftUI
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struct MessageListView: View {
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private let messageComposer = "MESSAGE_COMPOSER_ID"
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private let client: RocketChatClientProtocol
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private let database: Database
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private let messagesLoader: MessagesLoading
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private let messageSender: MessageSending
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private let formatter: RoomFormatter
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private let server: Server
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private let room: Room
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@State private var lastMessageID: String?
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@State private var lastOpen: Date?
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@FetchRequest<Message> private var messages: FetchedResults<Message>
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init(
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client: RocketChatClientProtocol,
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database: Database,
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messagesLoader: MessagesLoading,
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messageSender: MessageSending,
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room: Room,
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server: Server
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) {
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self.client = client
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self.database = database
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self.messagesLoader = messagesLoader
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self.messageSender = messageSender
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self.formatter = RoomFormatter(room: room, server: server)
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self.room = room
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self.server = server
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_messages = FetchRequest(fetchRequest: room.messagesRequest, animation: .none)
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_lastOpen = State(wrappedValue: room.updatedSince)
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}
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var body: some View {
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ScrollViewReader { reader in
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ScrollView {
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VStack(alignment: .leading, spacing: 8) {
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if room.hasMoreMessages {
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Button("Load More...") {
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guard let oldestMessage = room.firstMessage?.ts else { return }
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messagesLoader.loadMore(from: oldestMessage)
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}
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}
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ForEach(messages.indices, id: \.self) { index in
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let message = messages[index]
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let previousMessage = messages.indices.contains(index - 1) ? messages[index - 1] : nil
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MessageView(
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client: client,
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viewModel: .init(message: message, previousMessage: previousMessage, server: server, lastOpen: lastOpen)
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)
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.transition(.move(edge: .bottom))
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}
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MessageComposerView(room: room) {
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messageSender.sendMessage($0, in: room)
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lastOpen = nil
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}
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.id(messageComposer)
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}
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}
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.padding([.leading, .trailing])
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.navigationTitle(formatter.title ?? "")
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.navigationBarTitleDisplayMode(.inline)
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.onAppear {
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guard let roomID = room.id else { return }
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messagesLoader.start(on: roomID)
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}
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.onDisappear {
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messagesLoader.stop()
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}
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.onReceive(messages.publisher) { _ in
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if lastMessageID != messages.last?.id {
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reader.scrollTo(messageComposer, anchor: .bottom)
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lastMessageID = messages.last?.id
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}
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}
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}
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}
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}
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