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PostEditorModel.swift
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PostEditorModel.swift
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import SwiftUI
import CoreData
enum PostAppearance: String {
case sans = "OpenSans-Regular"
case mono = "Hack-Regular"
case serif = "Lora-Regular"
}
struct PostEditorModel {
@AppStorage(WFDefaults.showAllPostsFlag, store: UserDefaults.shared) var showAllPostsFlag: Bool = false
@AppStorage(WFDefaults.selectedCollectionURL, store: UserDefaults.shared) var selectedCollectionURL: URL?
@AppStorage(WFDefaults.lastDraftURL, store: UserDefaults.shared) var lastDraftURL: URL?
private(set) var initialPostTitle: String?
private(set) var initialPostBody: String?
#if os(macOS)
var postToUpdate: WFAPost?
#endif
func saveLastDraft(_ post: WFAPost) {
self.lastDraftURL = post.status != PostStatus.published.rawValue ? post.objectID.uriRepresentation() : nil
}
func clearLastDraft() {
self.lastDraftURL = nil
}
func fetchLastDraftFromAppStorage() -> WFAPost? {
guard let postURL = lastDraftURL else { return nil }
guard let post = fetchManagedObject(from: postURL) as? WFAPost else { return nil }
return post
}
func generateNewLocalPost(withFont appearance: Int) -> WFAPost {
let managedPost = WFAPost(context: LocalStorageManager.standard.container.viewContext)
managedPost.createdDate = Date()
managedPost.title = ""
managedPost.body = ""
managedPost.status = PostStatus.local.rawValue
managedPost.collectionAlias = WriteFreelyModel.shared.selectedCollection?.alias
switch appearance {
case 1:
managedPost.appearance = "sans"
case 2:
managedPost.appearance = "wrap"
default:
managedPost.appearance = "serif"
}
if let languageCode = Locale.current.languageCode {
managedPost.language = languageCode
managedPost.rtl = Locale.characterDirection(forLanguage: languageCode) == .rightToLeft
}
return managedPost
}
func fetchSelectedCollectionFromAppStorage() -> WFACollection? {
guard let collectionURL = selectedCollectionURL else { return nil }
guard let collection = fetchManagedObject(from: collectionURL) as? WFACollection else { return nil }
return collection
}
/// Sets the initial values for title and body on a published post.
///
/// Used to detect if the title and body have changed back to their initial values. If the passed `WFAPost` isn't
/// published, any title and post values already stored are reset to `nil`.
/// - Parameter post: The `WFAPost` for which we're setting initial title/body values.
mutating func setInitialValues(for post: WFAPost) {
if post.status != PostStatus.published.rawValue {
initialPostTitle = nil
initialPostBody = nil
return
}
initialPostTitle = post.title
initialPostBody = post.body
}
private func fetchManagedObject(from objectURL: URL) -> NSManagedObject? {
let coordinator = LocalStorageManager.standard.container.persistentStoreCoordinator
guard let managedObjectID = coordinator.managedObjectID(forURIRepresentation: objectURL) else { return nil }
let object = LocalStorageManager.standard.container.viewContext.object(with: managedObjectID)
return object
}
}

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