131 lines
4.0 KiB
Swift
131 lines
4.0 KiB
Swift
//
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// ProfileAboutViewModel.swift
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// Mastodon
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//
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// Created by MainasuK on 2022-1-22.
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//
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import os.log
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import UIKit
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import Combine
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import CoreDataStack
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import MastodonSDK
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import MastodonMeta
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import Kanna
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final class ProfileAboutViewModel {
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var disposeBag = Set<AnyCancellable>()
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// input
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let context: AppContext
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@Published var user: MastodonUser?
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@Published var isEditing = false
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@Published var accountForEdit: Mastodon.Entity.Account?
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// output
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var diffableDataSource: UICollectionViewDiffableDataSource<ProfileFieldSection, ProfileFieldItem>?
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let profileInfo = ProfileInfo()
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let profileInfoEditing = ProfileInfo()
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@Published var fields: [MastodonField] = []
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@Published var emojiMeta: MastodonContent.Emojis = [:]
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init(context: AppContext) {
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self.context = context
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// end init
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$user
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.compactMap { $0 }
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.flatMap { $0.publisher(for: \.emojis) }
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.map { $0.asDictionary }
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.assign(to: &$emojiMeta)
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$user
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.compactMap { $0 }
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.flatMap { $0.publisher(for: \.fields) }
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.assign(to: &$fields)
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Publishers.CombineLatest(
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$fields,
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$emojiMeta
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)
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.map { fields, emojiMeta in
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fields.map { ProfileFieldItem.FieldValue(name: $0.name, value: $0.value, emojiMeta: emojiMeta) }
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}
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.assign(to: &profileInfo.$fields)
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Publishers.CombineLatest(
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$accountForEdit,
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$emojiMeta
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)
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.receive(on: DispatchQueue.main)
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.sink { [weak self] account, emojiMeta in
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guard let self = self else { return }
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guard let account = account else { return }
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// update profileInfo will occurs race condition issue
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// bind user.fields to profileInfo to avoid it
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self.profileInfoEditing.fields = account.source?.fields?.compactMap { field in
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ProfileFieldItem.FieldValue(
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name: field.name,
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value: field.value,
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emojiMeta: [:] // no use for editing
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)
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} ?? []
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}
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.store(in: &disposeBag)
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}
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}
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extension ProfileAboutViewModel {
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class ProfileInfo {
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@Published var fields: [ProfileFieldItem.FieldValue] = []
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}
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}
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extension ProfileAboutViewModel {
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func appendFieldItem() {
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var fields = profileInfoEditing.fields
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guard fields.count < ProfileHeaderViewModel.maxProfileFieldCount else { return }
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fields.append(ProfileFieldItem.FieldValue(name: "", value: "", emojiMeta: [:]))
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profileInfoEditing.fields = fields
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}
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func removeFieldItem(item: ProfileFieldItem) {
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var fields = profileInfoEditing.fields
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guard case let .editField(field) = item else { return }
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guard let removeIndex = fields.firstIndex(of: field) else { return }
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fields.remove(at: removeIndex)
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profileInfoEditing.fields = fields
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}
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}
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// MARK: - ProfileViewModelEditable
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extension ProfileAboutViewModel: ProfileViewModelEditable {
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var isEdited: Bool {
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guard isEditing else { return false }
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let isFieldsEqual: Bool = {
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let originalFields = self.accountForEdit?.source?.fields?.compactMap { field in
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ProfileFieldItem.FieldValue(name: field.name, value: field.value, emojiMeta: [:])
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} ?? []
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let editFields = profileInfoEditing.fields
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guard editFields.count == originalFields.count else { return false }
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for (editField, originalField) in zip(editFields, originalFields) {
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guard editField.name.value == originalField.name.value,
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editField.value.value == originalField.value.value else {
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return false
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}
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}
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return true
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}()
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guard isFieldsEqual else { return true }
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return false
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}
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}
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