mastodon-app-ufficiale-ipho.../MastodonSDK/Sources/MastodonCore/Persistence/Persistence+MastodonUser.swift

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//
// Persistence+MastodonUser.swift
// Persistence+MastodonUser
//
// Created by Cirno MainasuK on 2021-8-18.
// Copyright © 2021 Twidere. All rights reserved.
//
import CoreData
import CoreDataStack
import Foundation
import MastodonSDK
import os.log
extension Persistence.MastodonUser {
public struct PersistContext {
public let domain: String
public let entity: Mastodon.Entity.Account
public let cache: Persistence.PersistCache<MastodonUser>?
public let networkDate: Date
public let log = Logger(subsystem: "MastodonUser", category: "Persistence")
public init(
domain: String,
entity: Mastodon.Entity.Account,
cache: Persistence.PersistCache<MastodonUser>?,
networkDate: Date
) {
self.domain = domain
self.entity = entity
self.cache = cache
self.networkDate = networkDate
}
}
public struct PersistResult {
public let user: MastodonUser
public let isNewInsertion: Bool
public init(
user: MastodonUser,
isNewInsertion: Bool
) {
self.user = user
self.isNewInsertion = isNewInsertion
}
}
public static func createOrMerge(
in managedObjectContext: NSManagedObjectContext,
context: PersistContext
) -> PersistResult {
if let oldMastodonUser = fetch(in: managedObjectContext, context: context) {
merge(mastodonUser: oldMastodonUser, context: context)
return PersistResult(user: oldMastodonUser, isNewInsertion: false)
} else {
let user = create(in: managedObjectContext, context: context)
return PersistResult(user: user, isNewInsertion: true)
}
}
}
extension Persistence.MastodonUser {
public static func fetch(
in managedObjectContext: NSManagedObjectContext,
context: PersistContext
) -> MastodonUser? {
if let cache = context.cache {
return cache.dictionary[context.entity.id]
} else {
let request = MastodonUser.sortedFetchRequest
request.predicate = MastodonUser.predicate(
domain: context.domain,
id: context.entity.id
)
request.fetchLimit = 1
do {
return try managedObjectContext.fetch(request).first
} catch {
assertionFailure(error.localizedDescription)
return nil
}
}
}
@discardableResult
public static func create(
in managedObjectContext: NSManagedObjectContext,
context: PersistContext
) -> MastodonUser {
let property = MastodonUser.Property(
entity: context.entity,
domain: context.domain,
networkDate: context.networkDate
)
let user = MastodonUser.insert(into: managedObjectContext, property: property)
return user
}
public static func merge(
mastodonUser user: MastodonUser,
context: PersistContext
) {
guard context.networkDate > user.updatedAt else { return }
let property = MastodonUser.Property(
entity: context.entity,
domain: context.domain,
networkDate: context.networkDate
)
user.update(property: property)
}
private static func update(
mastodonUser user: MastodonUser,
context: PersistContext
) {
// TODO:
} // end func update
}
extension Persistence.MastodonUser {
public struct RelationshipContext {
public let entity: Mastodon.Entity.Relationship
public let me: MastodonUser
public let networkDate: Date
public let log = Logger(subsystem: "MastodonUser", category: "Persistence")
public init(
entity: Mastodon.Entity.Relationship,
me: MastodonUser,
networkDate: Date
) {
self.entity = entity
self.me = me
self.networkDate = networkDate
}
}
public static func update(
mastodonUser user: MastodonUser,
context: RelationshipContext
) {
guard context.entity.id != context.me.id else { return } // not update relationship for self
let relationship = context.entity
let me = context.me
user.update(isFollowing: relationship.following, by: me)
relationship.requested.flatMap { user.update(isFollowRequested: $0, by: me) }
// relationship.endorsed.flatMap { user.update(isEndorsed: $0, by: me) }
me.update(isFollowing: relationship.followedBy, by: user)
relationship.muting.flatMap { user.update(isMuting: $0, by: me) }
user.update(isBlocking: relationship.blocking, by: me)
relationship.domainBlocking.flatMap { user.update(isDomainBlocking: $0, by: me) }
relationship.blockedBy.flatMap { me.update(isBlocking: $0, by: user) }
relationship.showingReblogs.flatMap { me.update(isShowingReblogs: $0, by: user) }
}
}