import XCTest

/// Integration tests for document CRUD against the real local backend.
///
/// Test Plan IDs: DOC-002, DOC-004, DOC-005
/// Data is seeded via API and cleaned up in tearDown.
final class DocumentIntegrationTests: AuthenticatedTestCase {

    override var useSeededAccount: Bool { true }

    // MARK: - DOC-002: Create Document

    func testDOC002_CreateDocumentWithRequiredFields() {
        // Seed a residence so the document form has a valid residence picker
        cleaner.seedResidence()

        navigateToDocuments()

        let addButton = app.buttons[AccessibilityIdentifiers.Document.addButton]
        let emptyState = app.otherElements[AccessibilityIdentifiers.Document.emptyStateView]
        let documentList = app.otherElements[AccessibilityIdentifiers.Document.documentsList]

        let loaded = addButton.waitForExistence(timeout: defaultTimeout)
            || emptyState.waitForExistence(timeout: 3)
            || documentList.waitForExistence(timeout: 3)
        XCTAssertTrue(loaded, "Documents screen should load")

        if addButton.exists && addButton.isHittable {
            addButton.forceTap()
        } else {
            let emptyAddButton = app.buttons.containing(
                NSPredicate(format: "label CONTAINS[c] 'Add' OR label CONTAINS[c] 'Create'")
            ).firstMatch
            emptyAddButton.waitForExistenceOrFail(timeout: defaultTimeout)
            emptyAddButton.forceTap()
        }

        let titleField = app.textFields[AccessibilityIdentifiers.Document.titleField]
        titleField.waitForExistenceOrFail(timeout: defaultTimeout)
        let uniqueTitle = "IntTest Doc \(Int(Date().timeIntervalSince1970))"
        titleField.forceTap()
        titleField.typeText(uniqueTitle)

        let saveButton = app.buttons[AccessibilityIdentifiers.Document.saveButton]
        saveButton.scrollIntoView(in: app.scrollViews.firstMatch)
        saveButton.forceTap()

        let newDoc = app.staticTexts[uniqueTitle]
        XCTAssertTrue(
            newDoc.waitForExistence(timeout: longTimeout),
            "Newly created document should appear in list"
        )
    }

    // MARK: - DOC-004: Edit Document

    func testDOC004_EditDocument() {
        // Seed a residence and document via API
        let residence = cleaner.seedResidence()
        let doc = cleaner.seedDocument(residenceId: residence.id, title: "Edit Target Doc \(Int(Date().timeIntervalSince1970))")

        navigateToDocuments()

        // Find and tap the seeded document
        let card = app.staticTexts[doc.title]
        card.waitForExistenceOrFail(timeout: longTimeout)
        card.forceTap()

        // Tap edit
        let editButton = app.buttons[AccessibilityIdentifiers.Document.editButton]
        editButton.waitForExistenceOrFail(timeout: defaultTimeout)
        editButton.forceTap()

        // Update title
        let titleField = app.textFields[AccessibilityIdentifiers.Document.titleField]
        titleField.waitForExistenceOrFail(timeout: defaultTimeout)
        titleField.forceTap()
        titleField.press(forDuration: 1.0)
        let selectAll = app.menuItems["Select All"]
        if selectAll.waitForExistence(timeout: 2) {
            selectAll.tap()
        }

        let updatedTitle = "Updated Doc \(Int(Date().timeIntervalSince1970))"
        titleField.typeText(updatedTitle)

        let saveButton = app.buttons[AccessibilityIdentifiers.Document.saveButton]
        saveButton.scrollIntoView(in: app.scrollViews.firstMatch)
        saveButton.forceTap()

        let updatedText = app.staticTexts[updatedTitle]
        XCTAssertTrue(
            updatedText.waitForExistence(timeout: longTimeout),
            "Updated document title should appear after edit"
        )
    }

    // MARK: - DOC-007: Document Image Section Exists
    // NOTE: Full image-deletion testing (the original DOC-007 scenario) requires a
    // document with at least one uploaded image. Image upload cannot be triggered
    // via API alone — it requires user interaction with the photo picker inside the
    // app (or a multipart upload endpoint). This stub seeds a document, opens its
    // detail view, and verifies the images section is present so that a human tester
    // or future automation (with photo injection) can extend it.

    func test22_documentImageSectionExists() throws {
        // Seed a residence and a document via API
        let residence = cleaner.seedResidence()
        let document = cleaner.seedDocument(
            residenceId: residence.id,
            title: "Image Section Doc \(Int(Date().timeIntervalSince1970))"
        )

        navigateToDocuments()

        // Open the seeded document's detail
        let docText = app.staticTexts[document.title]
        docText.waitForExistenceOrFail(timeout: longTimeout)
        docText.forceTap()

        // Verify the detail view loaded
        let detailView = app.otherElements[AccessibilityIdentifiers.Document.detailView]
        let detailLoaded = detailView.waitForExistence(timeout: defaultTimeout)
            || app.navigationBars.staticTexts[document.title].waitForExistence(timeout: defaultTimeout)
        XCTAssertTrue(detailLoaded, "Document detail view should load after tapping the document")

        // Look for an images / photos section header or add-image button.
        // The exact identifier or label will depend on the document detail implementation.
        let imagesSection = app.staticTexts.containing(
            NSPredicate(format: "label CONTAINS[c] 'Image' OR label CONTAINS[c] 'Photo' OR label CONTAINS[c] 'Attachment'")
        ).firstMatch

        let addImageButton = app.buttons.containing(
            NSPredicate(format: "label CONTAINS[c] 'Image' OR label CONTAINS[c] 'Photo' OR label CONTAINS[c] 'Add'")
        ).firstMatch

        let sectionVisible = imagesSection.waitForExistence(timeout: defaultTimeout)
            || addImageButton.waitForExistence(timeout: 3)

        // This assertion will fail gracefully if the images section is not yet implemented.
        // When it does fail, it surfaces the missing UI element for the developer.
        XCTAssertTrue(
            sectionVisible,
            "Document detail should show an images/photos section or an add-image button. " +
            "Full deletion of a specific image requires manual upload first — see DOC-007 in test plan."
        )
    }

    // MARK: - DOC-005: Delete Document

    func testDOC005_DeleteDocument() {
        // Seed a document via API — don't track since we'll delete through UI
        let residence = cleaner.seedResidence()
        let deleteTitle = "Delete Doc \(Int(Date().timeIntervalSince1970))"
        TestDataSeeder.createDocument(token: session.token, residenceId: residence.id, title: deleteTitle)

        navigateToDocuments()

        let target = app.staticTexts[deleteTitle]
        target.waitForExistenceOrFail(timeout: longTimeout)
        target.forceTap()

        let deleteButton = app.buttons[AccessibilityIdentifiers.Document.deleteButton]
        deleteButton.waitForExistenceOrFail(timeout: defaultTimeout)
        deleteButton.forceTap()

        let confirmButton = app.buttons[AccessibilityIdentifiers.Alert.confirmButton]
        let alertDelete = app.alerts.buttons.containing(
            NSPredicate(format: "label CONTAINS[c] 'Delete' OR label CONTAINS[c] 'Confirm'")
        ).firstMatch

        if confirmButton.waitForExistence(timeout: shortTimeout) {
            confirmButton.tap()
        } else if alertDelete.waitForExistence(timeout: shortTimeout) {
            alertDelete.tap()
        }

        let deletedDoc = app.staticTexts[deleteTitle]
        XCTAssertTrue(
            deletedDoc.waitForNonExistence(timeout: longTimeout),
            "Deleted document should no longer appear"
        )
    }
}