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Refactoring

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This commit is contained in:
Justin Mazzocchi 2020-08-29 23:02:00 -07:00
parent 725438cc9e
commit 11e8f1b3f8
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GPG key ID: E223E6937AAFB01C
1 changed files with 10 additions and 16 deletions
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26
View Models/StatusListViewModel.swift
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@ -9,7 +9,6 @@ class StatusListViewModel: ObservableObject {
@Published private(set) var loading = false
private(set) var maintainScrollPositionOfStatusID: String?
@Published private var filterRegularExpression: String?
private var statuses = [String: Status]()
private let statusListService: StatusListService
private var statusViewModelCache = [Status: (StatusViewModel, AnyCancellable)]()
@ -18,22 +17,9 @@ class StatusListViewModel: ObservableObject {
init(statusListService: StatusListService) {
self.statusListService = statusListService
statusListService.filters
.assignErrorsToAlertItem(to: \.alertItem, on: self)
.map { $0.regularExpression() }
.assign(to: &$filterRegularExpression)
statusListService.statusSections
.map {
$0.map {
$0.filter { [weak self] in
guard let filterRegularExpression = self?.filterRegularExpression else { return true }
return $0.filterableContent.range(of: filterRegularExpression,
options: [.regularExpression, .caseInsensitive]) == nil
}
}
}
.combineLatest(statusListService.filters.map { $0.regularExpression() })
.map(Self.filter(statusSections:regularExpression:))
.handleEvents(receiveOutput: { [weak self] in
self?.determineIfScrollPositionShouldBeMaintained(newStatusSections: $0)
self?.cleanViewModelCache(newStatusSections: $0)
@ -91,6 +77,14 @@ extension StatusListViewModel {
}
private extension StatusListViewModel {
static func filter(statusSections: [[Status]], regularExpression: String?) -> [[Status]] {
guard let regEx = regularExpression else { return statusSections }
return statusSections.map {
$0.filter { $0.filterableContent.range(of: regEx, options: [.regularExpression, .caseInsensitive]) == nil }
}
}
func determineIfScrollPositionShouldBeMaintained(newStatusSections: [[Status]]) {
maintainScrollPositionOfStatusID = nil // clear old value