wt
cbb820a86e
Models: - Convert Conversation and ChatMessage to SwiftData @Model classes with a one-to-many relationship and cascade delete. - Rename ChatMessage.id to clientID and drop Conversation.id in favor of jid (the string id would clash with PersistentIdentifier). - Keep MessageReaction as a Codable value stored in an array attribute. Persistence: - Add ArchiveStore, a per-account ModelContainer/ModelContext that replaces the JSON ChatArchive with load/save/erase. - Add ArchiveMetadataRecord for the durable MAM checkpoints, cursor, locally deleted message IDs and roster contact JIDs. - Add LegacyArchiveImporter to import the old JSON snapshot once and delete the file afterwards, preserving existing history. AppModel: - Replace ChatArchive with ArchiveStore and persist via context.save(); insert new models and delete the replaced object on upsert merges so SwiftData never keeps an orphaned duplicate. Tests: - Replace ChatArchiveTests with ArchiveStoreTests (store round-trip and legacy import) and drop the now-obsolete Codable round-trip assertions.
36 lines
1.1 KiB
Swift
36 lines
1.1 KiB
Swift
import Foundation
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#if os(iOS)
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import UIKit
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typealias ChatMediaPlatformImage = UIImage
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#elseif os(macOS)
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import AppKit
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typealias ChatMediaPlatformImage = NSImage
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#endif
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/// SwiftUI can evaluate every visible bubble repeatedly during scrolling.
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/// Keep decoded thumbnails in a bounded native-image cache so those passes do
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/// not repeatedly decompress JPEG/HEIC data on the main actor.
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@MainActor
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enum ChatMediaImageCache {
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private static let cache: NSCache<NSString, ChatMediaPlatformImage> = {
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let cache = NSCache<NSString, ChatMediaPlatformImage>()
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cache.countLimit = 160
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cache.totalCostLimit = 48 * 1_024 * 1_024
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return cache
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}()
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static func image(
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for message: ChatMessage,
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data: Data
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) -> ChatMediaPlatformImage? {
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let cacheKey = "\(message.conversationID)\u{1F}\(message.clientID)" as NSString
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if let cached = cache.object(forKey: cacheKey) {
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return cached
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}
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guard let image = ChatMediaPlatformImage(data: data) else { return nil }
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cache.setObject(image, forKey: cacheKey, cost: data.count)
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return image
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}
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}
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