import XCTest

/// Authentication flow tests
/// Based on working SimpleLoginTest pattern
final class Suite2_AuthenticationTests: XCTestCase {
    var app: XCUIApplication!

    override func setUpWithError() throws {
        continueAfterFailure = false
        app = XCUIApplication()
        app.launch()
        ensureLoggedOut()
    }

    override func tearDownWithError() throws {
        app = nil
    }

    // MARK: - Helper Methods

    private func ensureLoggedOut() {
        UITestHelpers.ensureLoggedOut(app: app)
    }

    private func login(username: String, password: String) {
        UITestHelpers.login(app: app, username: username, password: password)
    }

    // MARK: - 1. Error/Validation Tests

    func test01_loginWithInvalidCredentials() {
        // Given: User is on login screen
        let welcomeText = app.staticTexts["Welcome Back"]
        XCTAssertTrue(welcomeText.exists, "Should be on login screen")

        // When: User logs in with invalid credentials
        login(username: "wronguser", password: "wrongpass")

        // Then: User should see error message and stay on login screen
        sleep(3) // Wait for API response

        // Should still be on login screen
        XCTAssertTrue(welcomeText.exists, "Should still be on login screen")

        // Sign In button should still be visible (not logged in)
        let signInButton = app.buttons.containing(NSPredicate(format: "label CONTAINS[c] 'Sign In'")).firstMatch
        XCTAssertTrue(signInButton.exists, "Should still see Sign In button")
    }

    // MARK: - 2. Creation Tests (Login/Session)

    func test02_loginWithValidCredentials() {
        // Given: User is on login screen
        let welcomeText = app.staticTexts["Welcome Back"]
        XCTAssertTrue(welcomeText.exists, "Should be on login screen")

        // When: User logs in with valid credentials
        login(username: "testuser", password: "TestPass123!")

        // Then: User should see main tab view
        let residencesTab = app.tabBars.buttons.containing(NSPredicate(format: "label CONTAINS[c] 'Residences'")).firstMatch
        let didNavigate = residencesTab.waitForExistence(timeout: 10)
        XCTAssertTrue(didNavigate, "Should navigate to main app after successful login")
    }

    // MARK: - 3. View/UI Tests

    func test03_passwordVisibilityToggle() {
        // Given: User is on login screen
        let passwordField = app.secureTextFields.containing(NSPredicate(format: "placeholderValue CONTAINS[c] 'password'")).firstMatch
        XCTAssertTrue(passwordField.waitForExistence(timeout: 5), "Password field should exist")

        // When: User types password
        passwordField.tap()
        passwordField.typeText("secret123")

        // Then: Find and tap the eye icon (visibility toggle)
        let eyeButton = app.buttons[AccessibilityIdentifiers.Authentication.passwordVisibilityToggle].firstMatch
        XCTAssertTrue(eyeButton.waitForExistence(timeout: 5), "Password visibility toggle button must exist")

        eyeButton.tap()
        sleep(1)

        // Password should now be visible in a regular text field
        let visiblePasswordField = app.textFields.containing(NSPredicate(format: "placeholderValue CONTAINS[c] 'password'")).firstMatch
        XCTAssertTrue(visiblePasswordField.exists, "Password should be visible after toggle")
    }

    // MARK: - 4. Navigation Tests

    func test04_navigationToSignUp() {
        // Given: User is on login screen
        let welcomeText = app.staticTexts["Welcome Back"]
        XCTAssertTrue(welcomeText.exists, "Should be on login screen")

        // When: User taps Sign Up button
        let signUpButton = app.buttons.containing(NSPredicate(format: "label CONTAINS[c] 'Sign Up'")).firstMatch
        XCTAssertTrue(signUpButton.exists, "Sign Up button should exist")
        signUpButton.tap()

        // Then: Registration screen should appear
        sleep(2)
        let registerButton = app.buttons.containing(NSPredicate(format: "label CONTAINS[c] 'Register' OR label CONTAINS[c] 'Create Account'")).firstMatch
        XCTAssertTrue(registerButton.waitForExistence(timeout: 5), "Should navigate to registration screen")
    }

    func test05_forgotPasswordNavigation() {
        // Given: User is on login screen
        let welcomeText = app.staticTexts["Welcome Back"]
        XCTAssertTrue(welcomeText.exists, "Should be on login screen")

        // When: User taps Forgot Password button
        let forgotPasswordButton = app.buttons.containing(NSPredicate(format: "label CONTAINS[c] 'Forgot Password'")).firstMatch
        XCTAssertTrue(forgotPasswordButton.exists, "Forgot Password button should exist")
        forgotPasswordButton.tap()

        // Then: Password reset screen should appear
        sleep(2)
        // Look for email field or reset button
        let emailField = app.textFields.containing(NSPredicate(format: "placeholderValue CONTAINS[c] 'email'")).firstMatch
        let resetButton = app.buttons.containing(NSPredicate(format: "label CONTAINS[c] 'Reset' OR label CONTAINS[c] 'Send'")).firstMatch

        let passwordResetScreenAppeared = emailField.exists || resetButton.exists
        XCTAssertTrue(passwordResetScreenAppeared, "Should navigate to password reset screen")
    }

    // MARK: - 5. Delete/Logout Tests

    func test06_logout() {
        // Given: User is logged in
        login(username: "testuser", password: "TestPass123!")

        let residencesTab = app.tabBars.buttons.containing(NSPredicate(format: "label CONTAINS[c] 'Residences'")).firstMatch
        XCTAssertTrue(residencesTab.waitForExistence(timeout: 10), "Should be logged in")

        // When: User logs out
        UITestHelpers.logout(app: app)

        // Then: User should be back on login screen (verified by UITestHelpers.logout)
    }
}