import XCTest
import AppIntents
@testable import Marks

/// Tests for the App Intents layer.
///
/// Note: WWDC26's dedicated `AppIntentsTesting` framework (out-of-process
/// `IntentDefinitions(bundleIdentifier:)` / `.run()`) is not present in this
/// Xcode, so these are standard XCTest cases. They work because Marks has no
/// AppIntents extension — intents run in the app process, so `perform()` can be
/// called directly and asserted against `IntentRouter`.
final class AppIntentsTests: XCTestCase {

    private func sampleBookmark(
        id: Int = 42,
        url: String = "https://example.com/article",
        title: String = "Concurrency in Swift",
        tags: [String] = ["swift", "concurrency"],
        unread: Bool = true,
        aiSummary: String? = "A short summary."
    ) -> Bookmark {
        Bookmark(
            id: id, url: url, title: title, description: "desc",
            tagNames: tags, dateAdded: Date(), dateModified: Date(),
            isArchived: false, unread: unread, shared: false,
            websiteTitle: nil, websiteDescription: nil,
            faviconUrl: nil, previewImageUrl: nil,
            aiSummary: aiSummary, aiTags: nil
        )
    }

    // MARK: - Entity mapping

    func testEntityMapsFromBookmark() {
        let entity = BookmarkEntity(from: sampleBookmark())
        XCTAssertEqual(entity.id, 42)
        XCTAssertEqual(entity.title, "Concurrency in Swift")
        XCTAssertEqual(entity.url, URL(string: "https://example.com/article"))
        XCTAssertEqual(entity.host, "example.com")
        XCTAssertEqual(entity.tags, ["swift", "concurrency"])
        XCTAssertTrue(entity.unread)
        XCTAssertEqual(entity.summary, "A short summary.")
    }

    func testEntityUsesDisplayTitleFallback() {
        // empty title → falls back to url (Bookmark.displayTitle)
        let entity = BookmarkEntity(from: sampleBookmark(title: ""))
        XCTAssertFalse(entity.title.isEmpty)
    }

    func testMakeBookmarkRoundTripsCoreFields() {
        let entity = BookmarkEntity(from: sampleBookmark())
        let back = entity.makeBookmark()
        XCTAssertEqual(back.id, 42)
        XCTAssertEqual(back.url, "https://example.com/article")
        XCTAssertEqual(back.tagNames, ["swift", "concurrency"])
    }

    func testEntityIdentifierEncodesServerId() {
        let entity = BookmarkEntity(from: sampleBookmark(id: 7))
        let eid = EntityIdentifier(for: entity)
        XCTAssertEqual(eid.identifier, "7")
        XCTAssertTrue(eid.entityType == BookmarkEntity.self)
    }

    // MARK: - Router

    @MainActor
    func testRouterSearch() {
        IntentRouter.shared.searchRequest = nil
        IntentRouter.shared.search("hello")
        XCTAssertEqual(IntentRouter.shared.searchRequest, "hello")
    }

    @MainActor
    func testRouterOpenBookmark() {
        IntentRouter.shared.openBookmarkURL = nil
        IntentRouter.shared.openBookmark(url: "https://example.com")
        XCTAssertEqual(IntentRouter.shared.openBookmarkURL, "https://example.com")
    }

    // MARK: - Intent perform() wiring (no network)

    @MainActor
    func testSearchIntentRoutesCriteriaTerm() async throws {
        IntentRouter.shared.searchRequest = nil
        let intent = SearchMarksIntent()
        intent.criteria = StringSearchCriteria(term: "graphql")
        _ = try await intent.perform()
        XCTAssertEqual(IntentRouter.shared.searchRequest, "graphql")
    }

    @MainActor
    func testOpenIntentRoutesURL() async throws {
        IntentRouter.shared.openBookmarkURL = nil
        let intent = OpenBookmarkIntent()
        intent.target = BookmarkEntity(from: sampleBookmark())
        _ = try await intent.perform()
        XCTAssertEqual(IntentRouter.shared.openBookmarkURL, "https://example.com/article")
    }

    // MARK: - App Shortcuts

    func testAppShortcutsAreRegistered() {
        XCTAssertGreaterThanOrEqual(MarksShortcuts.appShortcuts.count, 4)
    }

    // MARK: - Ingest payload parsing

    func testIngestParsesDirectURL() {
        let payload = IngestPayloadParser.parse(item: URL(string: "https://example.com/article")!)
        XCTAssertEqual(payload?.url, "https://example.com/article")
        XCTAssertEqual(payload?.notes, "")
    }

    func testIngestFindsURLInSharedEmailText() {
        let text = """
        Thought you might want to save this:

        https://example.com/story?utm_source=newsletter

        Sent from Spark
        """

        let payload = IngestPayloadParser.parse(item: text, typeIdentifier: "public.plain-text")
        XCTAssertEqual(payload?.url, "https://example.com/story?utm_source=newsletter")
        XCTAssertTrue(payload?.notes.contains("Sent from Spark") == true)
    }

    func testIngestIgnoresMailLinksAndUsesWebURL() {
        let text = "mailto:friend@example.com\nRead https://example.com/read-later."
        let payload = IngestPayloadParser.parse(item: text, typeIdentifier: "public.plain-text")
        XCTAssertEqual(payload?.url, "https://example.com/read-later")
    }

    func testIngestDecodesHTMLLinksFromEmailClients() {
        let html = "<p>Save this: <a href=\"https://example.com/a?x=1&amp;y=2\">article</a></p>"
        let payload = IngestPayloadParser.parse(item: html, typeIdentifier: "public.html")
        XCTAssertEqual(payload?.url, "https://example.com/a?x=1&y=2")
    }

    // MARK: - Local sources

    func testSourceStoreSavesAndLoadsMetadata() throws {
        let root = FileManager.default.temporaryDirectory.appendingPathComponent(UUID().uuidString, isDirectory: true)
        defer { try? FileManager.default.removeItem(at: root) }

        let store = IngestedSourceStore(rootURL: root)
        let source = IngestedSource(kind: .text, title: "Meeting Notes", bodyText: "Follow up on paper receipts.", tags: ["receipts"])
        try store.save([source])

        let loaded = try store.load()
        XCTAssertEqual(loaded.count, 1)
        XCTAssertEqual(loaded.first?.id, source.id)
        XCTAssertEqual(loaded.first?.kind, .text)
        XCTAssertEqual(loaded.first?.title, "Meeting Notes")
        XCTAssertEqual(loaded.first?.bodyText, "Follow up on paper receipts.")
        XCTAssertEqual(loaded.first?.tags, ["receipts"])
    }

    func testSourceStoreImportsPlainTextFile() throws {
        let root = FileManager.default.temporaryDirectory.appendingPathComponent(UUID().uuidString, isDirectory: true)
        let input = FileManager.default.temporaryDirectory.appendingPathComponent("\(UUID().uuidString).txt")
        defer {
            try? FileManager.default.removeItem(at: root)
            try? FileManager.default.removeItem(at: input)
        }

        try Data("Offline clipping text".utf8).write(to: input)

        let store = IngestedSourceStore(rootURL: root)
        let source = try store.importFile(from: input, tags: ["offline"])

        XCTAssertEqual(source.kind, .file)
        XCTAssertEqual(source.bodyText, "Offline clipping text")
        XCTAssertEqual(source.tags, ["offline"])
        XCTAssertNotNil(store.fileURL(for: source))
    }

    @MainActor
    func testSourceLibraryUpdatesMetadataAndSearch() throws {
        let root = FileManager.default.temporaryDirectory.appendingPathComponent(UUID().uuidString, isDirectory: true)
        defer { try? FileManager.default.removeItem(at: root) }

        let library = IngestedSourceLibrary(store: IngestedSourceStore(rootURL: root))
        library.addText(title: "Draft", body: "Original extracted text", tags: ["raw"])

        let source = try XCTUnwrap(library.sources.first)
        library.update(source, title: "Cleaned Notes", bodyText: "Cleaned source body", tags: ["clean", "notes"])

        let updated = try XCTUnwrap(library.sources.first)
        XCTAssertEqual(updated.title, "Cleaned Notes")
        XCTAssertEqual(updated.bodyText, "Cleaned source body")
        XCTAssertEqual(updated.tags, ["clean", "notes"])
        XCTAssertGreaterThanOrEqual(updated.modifiedAt, source.modifiedAt)
        XCTAssertEqual(library.search("clean").first?.id, source.id)

        let reloaded = IngestedSourceStore(rootURL: root)
        XCTAssertEqual(try reloaded.load().first?.title, "Cleaned Notes")
    }
}