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OSGKeyboard/OSGKeyboardShared/Services/ClipboardSkillSemanticRanker.swift
T
Rocky 2cc81c4628 feat(keyboard): expand contextual skills and managed flows
Add local clipboard intent recommendations, webpage and phone actions, and safer host handoffs. Refine managed gateway, catalog refresh, onboarding, and adaptive polish behavior.
2026-08-23 14:02:33 +08:00

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Swift
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// ClipboardSkillSemanticRanker.swift
// OSGKeyboard · Shared
//
// Selects skills from the complete catalog for the newest accepted clipboard
// entry. Analysis is local and ephemeral; installation state, user-managed
// ordering, labels, and recommendations are never persisted.
import Combine
import Foundation
public enum ClipboardSkillSemanticRanker {
private static let longTextCharacterThreshold = 360
private static let languageConfidenceThreshold = 0.75
private static let maximumReplyRecommendations = 2
public static func ranked(
skills: [AIClipboardSkill],
sourceText: String,
analysis: ClipboardSemanticAnalysis,
uiLanguage _: AppUILanguage,
preferredLanguages: [String] = Locale.preferredLanguages
) -> [AIClipboardSkill] {
guard skills.count > 1 else { return skills }
return sorted(
skills,
scores: relevanceScores(
sourceText: sourceText,
analysis: analysis,
preferredLanguages: preferredLanguages
)
)
}
/// Returns only skills supported by current semantic evidence. No matching
/// label produces no recommendation instead of a fixed fallback row.
public static func recommended(
skills: [AIClipboardSkill],
sourceText: String,
analysis: ClipboardSemanticAnalysis,
uiLanguage _: AppUILanguage,
limit: Int,
preferredLanguages: [String] = Locale.preferredLanguages
) -> [AIClipboardSkill] {
guard limit > 0 else { return [] }
let scores = relevanceScores(
sourceText: sourceText,
analysis: analysis,
preferredLanguages: preferredLanguages
)
let relevant = skills.filter { scores[$0.id, default: 0] > 0 }
var selected: [AIClipboardSkill] = []
var replyCount = 0
for skill in sorted(relevant, scores: scores) {
guard selected.count < limit else { break }
if skill.supportsReplyStyle {
guard replyCount < maximumReplyRecommendations else { continue }
replyCount += 1
}
selected.append(skill)
}
return selected
}
private static func relevanceScores(
sourceText: String,
analysis: ClipboardSemanticAnalysis,
preferredLanguages: [String]
) -> [String: Int] {
var scores: [String: Int] = [:]
func boost(_ id: String, _ value: Int) {
scores[id, default: 0] += value
}
if let webURL = analysis.singleWebURL {
boost(AIClipboardSkillCatalog.openLinkID, 320)
if webURL.scheme?.lowercased() == "https" {
boost(AIClipboardSkillCatalog.summarizeWebPageID, 310)
}
return scores
}
if analysis.singlePhoneNumber != nil {
boost(AIClipboardSkillCatalog.callPhoneID, 320)
boost(AIClipboardSkillCatalog.createContactID, 310)
return scores
}
if isLanguageMismatch(
analysis.language,
preferredLanguages: preferredLanguages
) {
boost(AIClipboardSkillCatalog.translateID, 230)
}
if analysis.hasAddress {
boost(AIClipboardSkillCatalog.navigateID, 180)
}
if analysis.invitation.isDetected {
if analysis.hasDateOrTime {
boost(AIClipboardSkillCatalog.extractEventsID, 260)
}
boost(AIClipboardSkillCatalog.acceptInvitationID, 240)
boost(AIClipboardSkillCatalog.declineInvitationID, 230)
boost(AIClipboardSkillCatalog.replyID, 60)
} else if analysis.hasDateOrTime {
boost(AIClipboardSkillCatalog.extractEventsID, 110)
}
if analysis.task.isDetected {
boost(AIClipboardSkillCatalog.extractTodosID, 155)
boost(AIClipboardSkillCatalog.acceptTaskID, 140)
boost(AIClipboardSkillCatalog.clarifyRequestID, 105)
}
if analysis.question.isDetected {
boost(AIClipboardSkillCatalog.replyID, 145)
boost(AIClipboardSkillCatalog.clarifyRequestID, 110)
}
// A threshold-crossing complaint can still be used as advisory evidence
// if a future model loses automatic-routing approval. Ranking a chip is
// reversible and remains user-initiated.
if isAdvisoryComplaint(analysis.complaint) {
boost(AIClipboardSkillCatalog.empathyReplyID, 105)
boost(AIClipboardSkillCatalog.clarifyRequestID, 90)
boost(AIClipboardSkillCatalog.replyID, 55)
} else if analysis.sentiment == .negative, analysis.question.isDetected {
boost(AIClipboardSkillCatalog.empathyReplyID, 85)
boost(AIClipboardSkillCatalog.clarifyRequestID, 65)
}
if analysis.hasOrganizationName,
analysis.task.isDetected || analysis.question.isDetected || analysis.invitation.isDetected {
boost(AIClipboardSkillCatalog.businessReplyID, 125)
} else if analysis.hasOrganizationName {
boost(AIClipboardSkillCatalog.businessReplyID, 70)
}
if isListLike(sourceText) {
boost(AIClipboardSkillCatalog.organizeListID, 145)
boost(AIClipboardSkillCatalog.extractTodosID, 105)
boost(AIClipboardSkillCatalog.summarizeID, 45)
}
if sourceText.count >= longTextCharacterThreshold {
boost(AIClipboardSkillCatalog.summarizeID, 145)
boost(AIClipboardSkillCatalog.saveToNotesID, 85)
}
let hasSpecializedReplyIntent = analysis.task.isDetected
|| analysis.question.isDetected
|| analysis.invitation.isDetected
|| isAdvisoryComplaint(analysis.complaint)
if analysis.replyableMessage.isDetected,
!hasSpecializedReplyIntent,
sourceText.count < longTextCharacterThreshold,
!isListLike(sourceText) {
boost(AIClipboardSkillCatalog.replyID, 160)
if analysis.sentiment != .negative,
!isAdvisoryComplaint(analysis.complaint) {
boost(AIClipboardSkillCatalog.playfulReplyID, 145)
}
}
if analysis.sentiment == .positive {
boost(AIClipboardSkillCatalog.replyID, 45)
}
return scores
}
private static func sorted(
_ skills: [AIClipboardSkill],
scores: [String: Int]
) -> [AIClipboardSkill] {
let baseline = Dictionary(
uniqueKeysWithValues: skills.enumerated().map { ($0.element.id, $0.offset) }
)
return skills.sorted { lhs, rhs in
let leftScore = scores[lhs.id, default: 0]
let rightScore = scores[rhs.id, default: 0]
if leftScore != rightScore {
return leftScore > rightScore
}
return baseline[lhs.id, default: 0] < baseline[rhs.id, default: 0]
}
}
private static func isLanguageMismatch(
_ language: ClipboardLanguageLabel?,
preferredLanguages: [String]
) -> Bool {
guard let language, language.confidence >= languageConfidenceThreshold else {
return false
}
return !SystemLanguageResolver.isSameLanguage(
sourceIdentifier: language.identifier,
targetIdentifier: SystemLanguageResolver.primaryIdentifier(
preferredLanguages: preferredLanguages
)
)
}
private static func isAdvisoryComplaint(_ label: ClipboardIntentLabel) -> Bool {
label.confidence > 0 && label.confidence >= label.threshold
}
private static func isListLike(_ text: String) -> Bool {
let lines = text
.split(whereSeparator: \.isNewline)
.map { String($0).trimmingCharacters(in: .whitespacesAndNewlines) }
.filter { !$0.isEmpty }
guard lines.count >= 2 else { return false }
let markedCount = lines.filter(isMarkedListLine).count
if markedCount * 2 >= lines.count {
return true
}
let averageLength = lines.reduce(0) { $0 + $1.count } / lines.count
return lines.count >= 3 && averageLength <= 48
}
private static func isMarkedListLine(_ line: String) -> Bool {
if ["- ", "* ", "• ", "· "].contains(where: { line.hasPrefix($0) }) {
return true
}
let prefix = line.prefix(while: \.isNumber)
guard !prefix.isEmpty, prefix.count < line.count else { return false }
let marker = line[line.index(line.startIndex, offsetBy: prefix.count)]
return marker == "." || marker == "、" || marker == ")" || marker == ""
}
}
public struct ClipboardSemanticRankingSnapshot: Equatable, Sendable {
public let entryID: UUID
public let analysis: ClipboardSemanticAnalysis
public init(entryID: UUID, analysis: ClipboardSemanticAnalysis) {
self.entryID = entryID
self.analysis = analysis
}
}
@MainActor
public final class ClipboardSemanticRankingStore: ObservableObject {
public static let shared = ClipboardSemanticRankingStore()
@Published public private(set) var snapshot: ClipboardSemanticRankingSnapshot?
private let analyzer: ClipboardSemanticAnalyzer
private var analysisTask: Task<Void, Never>?
private var generation = UUID()
public init(analyzer: ClipboardSemanticAnalyzer = ClipboardSemanticAnalyzer()) {
self.analyzer = analyzer
}
public func analyze(_ entry: ClipboardHistoryEntry) {
analysisTask?.cancel()
generation = UUID()
let expectedGeneration = generation
snapshot = nil
analysisTask = Task { [weak self] in
guard let self else { return }
let analysis = await self.analyzer.analyze(entry.text)
guard !Task.isCancelled, self.generation == expectedGeneration else { return }
self.snapshot = ClipboardSemanticRankingSnapshot(
entryID: entry.id,
analysis: analysis
)
}
}
public func clear() {
generation = UUID()
analysisTask?.cancel()
analysisTask = nil
snapshot = nil
}
}