mirror of
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110 lines
4.2 KiB
Swift
110 lines
4.2 KiB
Swift
//
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// Copyright 2021 New Vector Ltd
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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import Combine
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import SwiftUI
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struct PollEditFormViewModelParameters {
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let mode: PollEditFormMode
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let pollDetails: EditFormPollDetails
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}
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typealias PollEditFormViewModelType = StateStoreViewModel<PollEditFormViewState, PollEditFormViewAction>
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class PollEditFormViewModel: PollEditFormViewModelType, PollEditFormViewModelProtocol {
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private enum Constants {
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static let minAnswerOptionsCount = 2
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static let maxAnswerOptionsCount = 20
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static let maxQuestionLength = 340
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static let maxAnswerOptionLength = 340
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}
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// MARK: - Properties
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// MARK: Private
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// MARK: Public
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var completion: ((PollEditFormViewModelResult) -> Void)?
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// MARK: - Setup
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init(parameters: PollEditFormViewModelParameters) {
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let state = PollEditFormViewState(
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minAnswerOptionsCount: Constants.minAnswerOptionsCount,
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maxAnswerOptionsCount: Constants.maxAnswerOptionsCount,
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mode: parameters.mode,
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bindings: PollEditFormViewStateBindings(
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question: PollEditFormQuestion(text: parameters.pollDetails.question, maxLength: Constants.maxQuestionLength),
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answerOptions: parameters.pollDetails.answerOptions.map { PollEditFormAnswerOption(text: $0, maxLength: Constants.maxAnswerOptionLength) },
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type: parameters.pollDetails.type
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)
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)
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super.init(initialViewState: state)
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}
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// MARK: - Public
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override func process(viewAction: PollEditFormViewAction) {
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switch viewAction {
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case .cancel:
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completion?(.cancel)
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case .create:
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completion?(.create(buildPollDetails()))
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case .update:
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completion?(.update(buildPollDetails()))
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case .addAnswerOption:
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state.bindings.answerOptions.append(PollEditFormAnswerOption(text: "", maxLength: Constants.maxAnswerOptionLength))
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case .deleteAnswerOption(let answerOption):
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state.bindings.answerOptions.removeAll { $0 == answerOption }
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}
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}
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// MARK: - PollEditFormViewModelProtocol
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func startLoading() {
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state.showLoadingIndicator = true
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}
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func stopLoading(errorAlertType: PollEditFormErrorAlertInfo.AlertType?) {
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state.showLoadingIndicator = false
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switch errorAlertType {
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case .failedCreatingPoll:
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state.bindings.alertInfo = PollEditFormErrorAlertInfo(id: .failedCreatingPoll,
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title: VectorL10n.pollEditFormPostFailureTitle,
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subtitle: VectorL10n.pollEditFormPostFailureSubtitle)
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case .failedUpdatingPoll:
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state.bindings.alertInfo = PollEditFormErrorAlertInfo(id: .failedUpdatingPoll,
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title: VectorL10n.pollEditFormUpdateFailureTitle,
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subtitle: VectorL10n.pollEditFormUpdateFailureSubtitle)
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case .none:
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break
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}
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}
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// MARK: - Private
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private func buildPollDetails() -> EditFormPollDetails {
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EditFormPollDetails(type: state.bindings.type,
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question: state.bindings.question.text.trimmingCharacters(in: .whitespacesAndNewlines),
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answerOptions: state.bindings.answerOptions.compactMap { answerOption in
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let text = answerOption.text.trimmingCharacters(in: .whitespacesAndNewlines)
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return text.isEmpty ? nil : text
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})
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}
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}
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