131 lines
3.3 KiB
Swift
131 lines
3.3 KiB
Swift
//
|
|
// Persistence+Tag.swift
|
|
// Mastodon
|
|
//
|
|
// Created by MainasuK on 2022-1-20.
|
|
//
|
|
|
|
import CoreData
|
|
import CoreDataStack
|
|
import Foundation
|
|
import MastodonSDK
|
|
import os.log
|
|
|
|
extension Persistence.Tag {
|
|
|
|
public struct PersistContext {
|
|
public let domain: String
|
|
public let entity: Mastodon.Entity.Tag
|
|
public let me: MastodonUser?
|
|
public let networkDate: Date
|
|
public let log = Logger(subsystem: "Tag", category: "Persistence")
|
|
|
|
public init(
|
|
domain: String,
|
|
entity: Mastodon.Entity.Tag,
|
|
me: MastodonUser?,
|
|
networkDate: Date
|
|
) {
|
|
self.domain = domain
|
|
self.entity = entity
|
|
self.me = me
|
|
self.networkDate = networkDate
|
|
}
|
|
}
|
|
|
|
public struct PersistResult {
|
|
public let tag: Tag
|
|
public let isNewInsertion: Bool
|
|
|
|
public init(
|
|
tag: Tag,
|
|
isNewInsertion: Bool
|
|
) {
|
|
self.tag = tag
|
|
self.isNewInsertion = isNewInsertion
|
|
}
|
|
}
|
|
|
|
public static func createOrMerge(
|
|
in managedObjectContext: NSManagedObjectContext,
|
|
context: PersistContext
|
|
) -> PersistResult {
|
|
if let old = fetch(in: managedObjectContext, context: context) {
|
|
merge(tag: old, context: context)
|
|
return PersistResult(
|
|
tag: old,
|
|
isNewInsertion: false
|
|
)
|
|
} else {
|
|
let object = create(
|
|
in: managedObjectContext,
|
|
context: context
|
|
)
|
|
|
|
return PersistResult(
|
|
tag: object,
|
|
isNewInsertion: false
|
|
)
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
extension Persistence.Tag {
|
|
|
|
public static func fetch(
|
|
in managedObjectContext: NSManagedObjectContext,
|
|
context: PersistContext
|
|
) -> Tag? {
|
|
let request = Tag.sortedFetchRequest
|
|
request.predicate = Tag.predicate(domain: context.domain, name: context.entity.name)
|
|
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
|
|
) -> Tag {
|
|
let property = Tag.Property(
|
|
entity: context.entity,
|
|
domain: context.domain,
|
|
networkDate: context.networkDate
|
|
)
|
|
let object = Tag.insert(
|
|
into: managedObjectContext,
|
|
property: property
|
|
)
|
|
update(tag: object, context: context)
|
|
return object
|
|
}
|
|
|
|
public static func merge(
|
|
tag: Tag,
|
|
context: PersistContext
|
|
) {
|
|
guard context.networkDate > tag.updatedAt else { return }
|
|
let property = Tag.Property(
|
|
entity: context.entity,
|
|
domain: context.domain,
|
|
networkDate: context.networkDate
|
|
)
|
|
tag.update(property: property)
|
|
update(tag: tag, context: context)
|
|
}
|
|
|
|
private static func update(
|
|
tag: Tag,
|
|
context: PersistContext
|
|
) {
|
|
tag.update(updatedAt: context.networkDate)
|
|
}
|
|
|
|
}
|