// AIHintKeywordExtractorTests.swift
// OSGKeyboardTests

@testable import OSGKeyboardShared
import XCTest

final class AIHintKeywordExtractorTests: XCTestCase {
    func testTrendingPrefersMetadataTitleOverHotPrefix() throws {
        let json = """
        {"id":"hot-1","text":"全网热点：朱镕基同志逝世","prompt":"请概括","category":"society","source":"tophub-open-hot","locale":"zh","metadata":{"title":"朱镕基同志逝世"}}
        """
        let card = try JSONDecoder().decode(AIHintCard.self, from: Data(json.utf8))
        XCTAssertEqual(card.visualKind, .trending)
        XCTAssertEqual(card.visualKind.systemImage, "flame.fill")
        XCTAssertEqual(card.resolvedDisplayText, "朱镕基同志逝世")
    }

    func testWeatherUsesCityAndTemperature() {
        let card = AIHintCard(
            id: "weather-zh-上海",
            displayText: "上海天气速览",
            prompt: "请说明天气",
            category: "weather",
            source: "open-meteo",
            locale: "zh",
            metadata: AIHintMetadata(city: "上海", tempC: 25.6)
        )
        XCTAssertEqual(card.visualKind, .weather)
        XCTAssertEqual(card.resolvedDisplayText, "上海 26°")
    }

    func testHolidayStripsPrefixAndUsesChineseName() {
        let card = AIHintCard(
            id: "holiday-next-cn",
            displayText: "临近节日：中秋节",
            prompt: "介绍中秋",
            category: "holiday",
            source: "nager-holidays",
            locale: "zh",
            conditions: ["date"],
            metadata: AIHintMetadata(name: "Mid-Autumn Festival")
        )
        XCTAssertEqual(card.visualKind, .calendar)
        XCTAssertEqual(card.resolvedDisplayText, "中秋节")
    }

    func testEnglishHolidayUsesMetadataName() {
        let card = AIHintCard(
            id: "holiday-next-us",
            displayText: "Upcoming: Labour Day",
            prompt: "Explain Labour Day",
            category: "holiday",
            source: "nager-holidays",
            locale: "en",
            metadata: AIHintMetadata(name: "Labour Day")
        )
        XCTAssertEqual(card.resolvedDisplayText, "Labour Day")
    }

    func testLongOrgTitleFallsBackToLastChunk() {
        let text = "中共中央 全国人大常委会 国务院 全国政协讣告 朱镕基同志逝世"
        XCTAssertEqual(
            AIHintKeywordExtractor.finalize(text, locale: "zh"),
            "朱镕基同志逝世"
        )
    }

    func testMixedTitlePrefersLeadingLatin() {
        XCTAssertEqual(
            AIHintKeywordExtractor.finalize(
                "DeepSeek Pro 正式版已经发布，如何评价该模型？",
                locale: "zh"
            ),
            "DeepSeek"
        )
    }

    func testDailyBriefIsNewsAndSoulQuoteIsSearch() {
        let brief = AIHintCard(
            id: "tophub-daily-brief-1",
            displayText: "看看今日早报",
            prompt: "写早报",
            category: "daily",
            source: "tophub-daily",
            locale: "zh"
        )
        XCTAssertEqual(brief.visualKind, .news)
        XCTAssertEqual(brief.resolvedDisplayText, "今日早报")

        let soul = AIHintCard(
            id: "tophub-daily-soul-1",
            displayText: "今日一句：展开聊聊",
            prompt: "解释这句话",
            category: "daily",
            source: "tophub-daily",
            locale: "zh",
            metadata: AIHintMetadata(soul: "为了防止我这个月又乱花钱")
        )
        XCTAssertEqual(soul.visualKind, .search)
        XCTAssertEqual(soul.resolvedDisplayText, "今日金句")
    }

    func testStockHintsKeepDistinctMarketLabelsAndChartIcon() {
        let expectedLabels = [
            "local-zh-stocks-cn": "今日A股",
            "local-zh-stocks-hk": "今日港股",
            "local-zh-stocks-us": "今日美股"
        ]
        let cards = AIHintLocalCatalog.cards(locale: "zh")
            .filter { expectedLabels[$0.id] != nil }

        XCTAssertEqual(cards.count, expectedLabels.count)
        for card in cards {
            XCTAssertEqual(card.visualKind, .stocks)
            XCTAssertEqual(card.resolvedDisplayText, expectedLabels[card.id])
        }
    }
}

final class AIClipboardSkillTests: XCTestCase {
    /// Every built-in skill ships on. "Speak as me" included: it is withheld by
    /// `requiresPersonalReplyStyleIDs` until a style exists, so it can never
    /// become a permanently broken chip, and it needs no opt-in of its own.
    func testVisibleDefaultsContainEveryBuiltInSkill() {
        XCTAssertEqual(
            AIClipboardSkillCatalog.visible().map(\.id),
            AIClipboardSkillCatalog.catalog.map(\.id)
        )
        XCTAssertTrue(AIClipboardSkillCatalog.catalog.allSatisfy(\.isDefault))
    }

    func testVisibleRespectsEnabledIDsForFutureSettings() {
        XCTAssertEqual(
            AIClipboardSkillCatalog.visible(enabledIDs: ["translate", "reply"]).map(\.id),
            ["translate", "reply"]
        )
        XCTAssertEqual(
            AIClipboardSkillCatalog.visible(enabledIDs: ["unknown"]).map(\.id),
            []
        )
    }

    func testTranslateUsesPrimarySystemLanguage() {
        let prompt = AIClipboardSkillCatalog.instruction(
            skillID: AIClipboardSkillCatalog.translateID,
            locale: "zh",
            translationTargetLocaleId: "ja",
            preferredLanguages: ["de-DE"]
        )
        XCTAssertTrue(prompt.contains("German"))
        XCTAssertFalse(prompt.contains("Japanese"))
        XCTAssertTrue(prompt.contains("原样输出"))
    }

    func testTranslateUsesSystemLanguageWhenPostTranslationIsOff() {
        let prompt = AIClipboardSkillCatalog.instruction(
            skillID: AIClipboardSkillCatalog.translateID,
            locale: "en",
            translationTargetLocaleId: TranslationLanguageCatalog.offLocaleId,
            preferredLanguages: ["ja-JP"]
        )
        XCTAssertTrue(prompt.contains("Japanese"))
        XCTAssertTrue(prompt.contains("system language"))
    }

    func testTranslateButtonTitleUsesSystemLanguage() {
        XCTAssertEqual(
            AIClipboardSkillCatalog.translateButtonTitle(
                translationTargetLocaleId: "de",
                uiLanguage: .chinese,
                preferredLanguages: ["en-US"]
            ),
            "译为英语"
        )
        XCTAssertEqual(
            AIClipboardSkillCatalog.translateButtonTitle(
                translationTargetLocaleId: TranslationLanguageCatalog.offLocaleId,
                uiLanguage: .english,
                preferredLanguages: ["ja-JP"]
            ),
            "To Japanese"
        )
    }

    func testSummarizeAsksForOverviewNotShortening() {
        let prompt = AIClipboardSkillCatalog.instruction(
            skillID: AIClipboardSkillCatalog.summarizeID,
            locale: "zh",
            translationTargetLocaleId: TranslationLanguageCatalog.offLocaleId
        )
        XCTAssertTrue(prompt.contains("总结"))
        XCTAssertTrue(prompt.contains("决定、结论和下一步"))
    }

    func testReplyScenesHaveDistinctInstructions() throws {
        let skill = try XCTUnwrap(
            AIClipboardSkillCatalog.skill(id: AIClipboardSkillCatalog.replyID)
        )
        let scenes: [AIClipboardReplyScene] = [
            .invitation,
            .task,
            .blessing,
            .clarification,
            .complaint,
            .negativeQuestion
        ]
        let prompts = scenes.map {
            AIClipboardSkillCatalog.instruction(
                for: skill,
                locale: "zh",
                translationTargetLocaleId: TranslationLanguageCatalog.offLocaleId,
                replyScene: $0
            )
        }
        XCTAssertEqual(Set(prompts).count, scenes.count)
        XCTAssertFalse(prompts.contains { $0.contains("用户选择的操作") })
    }

    func testPlayfulReplyIsWittyButKeepsSafetyBoundaries() throws {
        let skill = try XCTUnwrap(
            AIClipboardSkillCatalog.skill(id: AIClipboardSkillCatalog.playfulReplyID)
        )
        let instruction = AIClipboardSkillCatalog.instruction(
            for: skill,
            locale: "zh",
            translationTargetLocaleId: TranslationLanguageCatalog.offLocaleId
        )

        XCTAssertTrue(skill.supportsReplyStyle)
        XCTAssertTrue(instruction.contains("脱口秀演员"))
        XCTAssertTrue(instruction.contains("不攻击对方"))
        XCTAssertTrue(instruction.contains("严肃或敏感内容时收住幽默"))
        XCTAssertTrue(instruction.contains("普通人在和朋友、好友或同事聊天"))
    }

    func testReplyUsesConversationalBaselineAndOptionalLearnedStyle() throws {
        let skill = try XCTUnwrap(
            AIClipboardSkillCatalog.skill(id: AIClipboardSkillCatalog.replyID)
        )
        let instruction = AIClipboardSkillCatalog.instruction(
            for: skill,
            locale: "zh",
            translationTargetLocaleId: TranslationLanguageCatalog.offLocaleId,
            replyStyle: AIClipboardReplyStyleContext(
                styleID: "user.learned",
                prompt: "喜欢短句，常用“行”“可以”，不说客套话。"
            )
        )

        XCTAssertTrue(instruction.contains("普通人在和朋友、好友或同事聊天"))
        XCTAssertTrue(instruction.contains("1 个合适的表情或 Emoji"))
        XCTAssertTrue(instruction.contains("不得复述、改写、概括"))
        XCTAssertTrue(instruction.contains("<user_reply_style"))
        XCTAssertTrue(instruction.contains("喜欢短句"))
        XCTAssertTrue(instruction.contains("不能改变当前技能的意图"))
    }

    func testReplyUsesComplaintSceneModifier() throws {
        let skill = try XCTUnwrap(
            AIClipboardSkillCatalog.skill(id: AIClipboardSkillCatalog.replyID)
        )
        let instruction = AIClipboardSkillCatalog.instruction(
            for: skill,
            locale: "zh",
            translationTargetLocaleId: TranslationLanguageCatalog.offLocaleId,
            replyScene: .complaint
        )

        XCTAssertTrue(instruction.contains(#"<reply_scene type="complaint">"#))
        XCTAssertTrue(instruction.contains("接住对方的情绪"))
        XCTAssertTrue(instruction.contains("不虚构责任、进度或承诺"))
        XCTAssertTrue(instruction.contains("不能开玩笑"))
    }

    func testReplyUsesLighterModifierForNegativeQuestion() throws {
        let skill = try XCTUnwrap(
            AIClipboardSkillCatalog.skill(id: AIClipboardSkillCatalog.replyID)
        )
        let instruction = AIClipboardSkillCatalog.instruction(
            for: skill,
            locale: "zh",
            translationTargetLocaleId: TranslationLanguageCatalog.offLocaleId,
            replyScene: .negativeQuestion
        )

        XCTAssertTrue(instruction.contains(#"<reply_scene type="negative_question">"#))
        XCTAssertTrue(instruction.contains("不要因为语气负面就默认用户有错"))
        XCTAssertFalse(instruction.contains(#"<reply_scene type="complaint">"#))
    }

    func testLegacyDecisionSkillUsesUnifiedReplyScene() throws {
        let skill = try XCTUnwrap(
            AIClipboardSkillCatalog.skill(id: AIClipboardSkillCatalog.acceptInvitationID)
        )
        let instruction = AIClipboardSkillCatalog.instruction(
            for: skill,
            locale: "zh",
            translationTargetLocaleId: TranslationLanguageCatalog.offLocaleId,
            replyScene: .complaint
        )

        XCTAssertEqual(skill.id, AIClipboardSkillCatalog.replyID)
        XCTAssertTrue(instruction.contains(#"<reply_scene type="complaint">"#))
    }

    func testReplyStyleIsNotInjectedIntoNonReplySkill() throws {
        let skill = try XCTUnwrap(
            AIClipboardSkillCatalog.skill(id: AIClipboardSkillCatalog.summarizeID)
        )
        let instruction = AIClipboardSkillCatalog.instruction(
            for: skill,
            locale: "zh",
            translationTargetLocaleId: TranslationLanguageCatalog.offLocaleId,
            replyStyle: AIClipboardReplyStyleContext(
                styleID: "user.learned",
                prompt: "这是个人回复风格"
            )
        )

        XCTAssertFalse(instruction.contains("user_reply_style"))
        XCTAssertFalse(instruction.contains("这是个人回复风格"))
    }

    func testReplyStyleResolverAcceptsOnlyDistilledPersonalStyle() {
        let distilled = PolishStylePack(
            id: "user.learned",
            name: "我的风格",
            prompt: "喜欢短句",
            learningMetadata: Self.learningMetadata(),
            kind: .user
        )
        // Hand-written packs live on the Styles page and shape dictation only.
        let handWritten = PolishStylePack(
            id: "user.handwritten",
            name: "我手写的",
            prompt: "使用长句",
            kind: .user
        )
        let builtIn = PolishStylePack(
            id: "builtin.formal",
            name: "正式",
            prompt: "使用正式表达",
            kind: .builtin
        )

        XCTAssertEqual(
            AIClipboardReplyStyleContext.resolve(personalReplyStyle: distilled)?.prompt,
            "喜欢短句"
        )
        XCTAssertNil(AIClipboardReplyStyleContext.resolve(personalReplyStyle: handWritten))
        XCTAssertNil(AIClipboardReplyStyleContext.resolve(personalReplyStyle: builtIn))
        XCTAssertNil(AIClipboardReplyStyleContext.resolve(personalReplyStyle: nil))
    }

    // MARK: - Speak as me

    private func speakAsMeInstruction(
        style: AIClipboardReplyStyleContext?,
        locale: String = "zh"
    ) throws -> String {
        let skill = try XCTUnwrap(
            AIClipboardSkillCatalog.skill(id: AIClipboardSkillCatalog.speakAsMeID)
        )
        return AIClipboardSkillCatalog.instruction(
            for: skill,
            locale: locale,
            translationTargetLocaleId: "en",
            replyStyle: style
        )
    }

    /// Reuses `replyInstruction` and the skill inherits its "usually 1–3
    /// sentences" chat baseline, which would truncate a long clipboard and
    /// fight a formal personal style.
    func testSpeakAsMeSkipsTheReplyChatBaselineAndItsLengthCap() throws {
        let instruction = try speakAsMeInstruction(
            style: AIClipboardReplyStyleContext(styleID: "user.learned", prompt: "偏好长句书面表达")
        )

        XCTAssertFalse(instruction.contains("通常控制在 1～3 句"))
        XCTAssertFalse(instruction.contains("像一个普通人在和朋友"))
        XCTAssertTrue(instruction.contains("± 20%"))
    }

    /// Rewriting is not replying: Reply deliberately omits the never-answer
    /// boundary because answering is its job. This skill must carry it.
    func testSpeakAsMeCarriesTheNeverAnswerBoundary() throws {
        let zh = try speakAsMeInstruction(
            style: AIClipboardReplyStyleContext(styleID: "user.learned", prompt: "偏好短句")
        )
        XCTAssertTrue(zh.contains("# 不可协商边界"))
        XCTAssertTrue(zh.contains("偏好短句"))
        XCTAssertTrue(zh.contains("user_reply_style"))

        let en = try speakAsMeInstruction(
            style: AIClipboardReplyStyleContext(styleID: "user.learned", prompt: "short sentences"),
            locale: "en"
        )
        XCTAssertTrue(en.contains("# Non-negotiable boundary"))
    }

    /// Without a personal style the skill has nothing to rewrite toward. It is
    /// gated upstream; if it ever runs anyway it must not answer the clipboard.
    func testSpeakAsMeWithoutStyleStillRefusesToAnswer() throws {
        let instruction = try speakAsMeInstruction(style: nil)

        XCTAssertFalse(instruction.contains("user_reply_style"))
        XCTAssertTrue(instruction.contains("# 不可协商边界"))
    }

    func testSpeakAsMeShipsEnabledAndIsManagedOutsideTheGenericSkillLists() throws {
        let skill = try XCTUnwrap(
            AIClipboardSkillCatalog.skill(id: AIClipboardSkillCatalog.speakAsMeID)
        )

        XCTAssertTrue(skill.isDefault)
        XCTAssertTrue(
            AIAgentSkillLayout.defaultEnabledIDs.contains(AIClipboardSkillCatalog.speakAsMeID)
        )
        XCTAssertTrue(
            AIClipboardSkillCatalog.managedOutsideSkillListIDs
                .contains(AIClipboardSkillCatalog.speakAsMeID)
        )
        // Hidden for a different reason than the always-on system actions: it
        // carries a prerequisite they do not.
        XCTAssertFalse(
            AIClipboardSkillCatalog.hiddenFromSkillManagementIDs
                .contains(AIClipboardSkillCatalog.speakAsMeID)
        )
        XCTAssertTrue(
            AIClipboardSkillCatalog.requiresPersonalReplyStyleIDs
                .contains(AIClipboardSkillCatalog.speakAsMeID)
        )
        // The personal style is this skill's task, not a modifier layered on a
        // generated reply, so it must not ride the reply-style path.
        XCTAssertFalse(skill.supportsReplyStyle)
    }

    private static func learningMetadata(
        generatedAt: Date = Date()
    ) -> PolishStylePack.LearningMetadata {
        PolishStylePack.LearningMetadata(
            schemaVersion: 2,
            evidenceStatus: "sufficient",
            confidence: 0.7,
            asrExampleCount: 8,
            asrEffectiveCharacterCount: 2_600,
            replyExampleCount: 3,
            replyFinalEditCount: 1,
            generatedAt: generatedAt
        )
    }

    func testBusinessReplyKeepsProfessionalBaselineWithoutFriendEmojiGuidance() throws {
        let skill = try XCTUnwrap(
            AIClipboardSkillCatalog.skill(id: AIClipboardSkillCatalog.businessReplyID)
        )
        let instruction = AIClipboardSkillCatalog.instruction(
            for: skill,
            locale: "zh",
            translationTargetLocaleId: TranslationLanguageCatalog.offLocaleId
        )

        XCTAssertTrue(instruction.contains("同事之间正常沟通"))
        XCTAssertFalse(instruction.contains("朋友、好友"))
        XCTAssertFalse(instruction.contains("表情或 Emoji"))
    }

    func testExtractTodosAsksForNONEWhenEmpty() {
        let prompt = AIClipboardSkillCatalog.instruction(
            skillID: AIClipboardSkillCatalog.extractTodosID,
            locale: "zh",
            translationTargetLocaleId: TranslationLanguageCatalog.offLocaleId
        )
        XCTAssertTrue(prompt.contains("NONE"))
        XCTAssertTrue(prompt.contains("不要把整段原文当成一条待办"))
    }

    func testExtractEventsAsksForNONEWhenEmpty() {
        let prompt = AIClipboardSkillCatalog.instruction(
            skillID: AIClipboardSkillCatalog.extractEventsID,
            locale: "zh",
            translationTargetLocaleId: TranslationLanguageCatalog.offLocaleId
        )
        XCTAssertTrue(prompt.contains("NONE"))
        XCTAssertTrue(prompt.contains("开始|结束|标题|地点"))
    }

    func testNavigateAsksForNONEWhenEmpty() {
        let prompt = AIClipboardSkillCatalog.instruction(
            skillID: AIClipboardSkillCatalog.navigateID,
            locale: "zh",
            translationTargetLocaleId: TranslationLanguageCatalog.offLocaleId
        )
        XCTAssertTrue(prompt.contains("NONE"))
        XCTAssertTrue(prompt.contains("起点|终点"))
    }

    func testSaveToNotesAsksForTitleNotBody() {
        let prompt = AIClipboardSkillCatalog.instruction(
            skillID: AIClipboardSkillCatalog.saveToNotesID,
            locale: "zh",
            translationTargetLocaleId: TranslationLanguageCatalog.offLocaleId
        )
        XCTAssertTrue(prompt.contains("标题"))
        XCTAssertTrue(prompt.contains("不要输出正文"))
        XCTAssertTrue(prompt.contains("不要输出 NONE"))
    }
}