102 lines
3.7 KiB
Swift
102 lines
3.7 KiB
Swift
/*
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Copyright 2019-2024 New Vector Ltd.
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SPDX-License-Identifier: AGPL-3.0-only
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Please see LICENSE in the repository root for full details.
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*/
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import Foundation
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@objc final class RoomReactionsViewModel: NSObject, RoomReactionsViewModelType {
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// MARK: - Constants
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private enum Constants {
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static let maxItemsWhenLimited: Int = 8
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}
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// MARK: - Properties
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// MARK: Private
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private let aggregatedReactions: MXAggregatedReactions
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private let eventId: String
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private let showAll: Bool
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// MARK: Public
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@objc weak var viewModelDelegate: RoomReactionsViewModelDelegate?
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weak var viewDelegate: RoomReactionsViewModelViewDelegate?
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// MARK: - Setup
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@objc init(aggregatedReactions: MXAggregatedReactions,
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eventId: String,
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showAll: Bool) {
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self.aggregatedReactions = aggregatedReactions
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self.eventId = eventId
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self.showAll = showAll
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}
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// MARK: - Public
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func process(viewAction: RoomReactionsViewAction) {
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switch viewAction {
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case .loadData:
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self.loadData()
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case .tapReaction(let index):
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guard index < self.aggregatedReactions.reactions.count else {
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return
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}
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let reactionCount = self.aggregatedReactions.reactions[index]
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if reactionCount.myUserHasReacted {
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self.viewModelDelegate?.roomReactionsViewModel(self, didRemoveReaction: reactionCount, forEventId: self.eventId)
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} else {
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self.viewModelDelegate?.roomReactionsViewModel(self, didAddReaction: reactionCount, forEventId: self.eventId)
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}
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case .addNewReaction:
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break
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case .tapShowAction(.showAll):
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self.viewModelDelegate?.roomReactionsViewModel(self, didShowAllTappedForEventId: self.eventId)
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case .tapShowAction(.showLess):
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self.viewModelDelegate?.roomReactionsViewModel(self, didShowLessTappedForEventId: self.eventId)
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case .tapShowAction(.addReaction):
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self.viewModelDelegate?.roomReactionsViewModel(self, didTapAddReactionForEventId: self.eventId)
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case .longPress:
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self.viewModelDelegate?.roomReactionsViewModel(self, didLongPressForEventId: self.eventId)
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}
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}
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func loadData() {
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var reactions = self.aggregatedReactions.reactions
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.map { (reactionCount) -> RoomReactionViewData in
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RoomReactionViewData(emoji: reactionCount.reaction, countString: "\(reactionCount.count)", isCurrentUserReacted: reactionCount.myUserHasReacted)
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}
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var remainingReactions: [RoomReactionViewData] = []
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var showAllButtonState: RoomReactionsViewState.ShowAllButtonState = .none
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// Limit displayed reactions if required
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if reactions.count > Constants.maxItemsWhenLimited {
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if self.showAll == true {
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showAllButtonState = .showLess
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} else {
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remainingReactions = Array(reactions[Constants.maxItemsWhenLimited..<reactions.count])
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reactions = Array(reactions[0..<Constants.maxItemsWhenLimited])
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showAllButtonState = .showAll
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}
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}
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self.viewDelegate?.roomReactionsViewModel(self, didUpdateViewState: .loaded(reactionsViewData: reactions, remainingViewData: remainingReactions, showAllButtonState: showAllButtonState, showAddReaction: reactions.count > 0))
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}
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// MARK: - Hashable
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override var hash: Int {
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var hasher = Hasher()
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hasher.combine(self.aggregatedReactions)
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hasher.combine(self.eventId)
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hasher.combine(self.showAll)
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return hasher.finalize()
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}
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}
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