98 lines
3.6 KiB
Swift
98 lines
3.6 KiB
Swift
// SPDX-FileCopyrightText: 2026 Kaede Akino
|
|
// SPDX-License-Identifier: GPL-3.0-only
|
|
|
|
import AgentKit
|
|
import Foundation
|
|
|
|
/// Device-local model choices for durable conversations. Drafts remain in memory.
|
|
@MainActor
|
|
public protocol AssistantModelSelectionStoring {
|
|
func load() throws -> [UUID: AIModelRef]
|
|
func save(_ model: AIModelRef, for conversationID: UUID) throws
|
|
}
|
|
|
|
@MainActor
|
|
public final class InMemoryAssistantModelSelectionStore: AssistantModelSelectionStoring {
|
|
private var selections: [UUID: AIModelRef] = [:]
|
|
|
|
public init() {}
|
|
|
|
public func load() throws -> [UUID: AIModelRef] { selections }
|
|
|
|
public func save(_ model: AIModelRef, for conversationID: UUID) throws {
|
|
selections[conversationID] = model
|
|
}
|
|
}
|
|
|
|
/// Freezes new chats and repairs an unavailable choice exactly once.
|
|
@MainActor
|
|
public final class AssistantModelSelectionController {
|
|
private let ai: AIConfigurationModel
|
|
private let store: any AssistantModelSelectionStoring
|
|
|
|
public init(ai: AIConfigurationModel, store: any AssistantModelSelectionStoring) {
|
|
self.ai = ai
|
|
self.store = store
|
|
}
|
|
|
|
public func seed(_ conversation: ConversationModel) {
|
|
guard conversation.model == nil else { return }
|
|
conversation.model = defaultModel
|
|
}
|
|
|
|
/// Restore and backfill before publishing historical conversations.
|
|
public func selectionsForRestore(_ conversations: [StoredAgentConversation]) throws -> [UUID: AIModelRef] {
|
|
let saved = try store.load()
|
|
var selected: [UUID: AIModelRef] = [:]
|
|
for conversation in conversations {
|
|
let old = saved[conversation.id]
|
|
let model = old.flatMap { ai.lookupChat($0) == nil ? nil : $0 } ?? defaultModel
|
|
guard let model else { continue }
|
|
if model != old { try store.save(model, for: conversation.id) }
|
|
selected[conversation.id] = model
|
|
}
|
|
return selected
|
|
}
|
|
|
|
/// Called before a turn is captured, including the first turn of a draft.
|
|
@discardableResult
|
|
public func prepareForSend(_ conversation: ConversationModel) throws -> AIModelRef? {
|
|
let model = conversation.model.flatMap { ai.lookupChat($0) == nil ? nil : $0 } ?? defaultModel
|
|
guard let model else { return nil }
|
|
try store.save(model, for: conversation.id)
|
|
conversation.model = model
|
|
return model
|
|
}
|
|
|
|
public func select(_ model: AIModelRef, for conversation: ConversationModel) throws {
|
|
guard ai.lookupChat(model) != nil else { return }
|
|
if !conversation.transcript.isEmpty {
|
|
try store.save(model, for: conversation.id)
|
|
}
|
|
conversation.model = model
|
|
ai.select(model)
|
|
}
|
|
|
|
/// Existing chats keep valid choices. A provider deletion or remote settings
|
|
/// update replaces only choices that no longer resolve.
|
|
public func repairUnavailable(in conversations: [ConversationModel]) throws {
|
|
for conversation in conversations {
|
|
guard let current = conversation.model, ai.lookupChat(current) == nil,
|
|
let replacement = defaultModel
|
|
else { continue }
|
|
try store.save(replacement, for: conversation.id)
|
|
conversation.model = replacement
|
|
}
|
|
}
|
|
|
|
public func persistFork(_ conversation: ConversationModel) throws {
|
|
guard let model = conversation.model else { return }
|
|
try store.save(model, for: conversation.id)
|
|
}
|
|
|
|
private var defaultModel: AIModelRef? {
|
|
guard let resolved = ai.resolve(.chat) else { return nil }
|
|
return AIModelRef(modelProviderID: resolved.provider.id, modelID: resolved.model.id)
|
|
}
|
|
}
|