//
//  SportsTimeUITests.swift
//  SportsTimeUITests
//
//  Created by Trey Tartt on 1/6/26.
//

import XCTest

@MainActor
final class SportsTimeUITests: XCTestCase {

    override func setUpWithError() throws {
        // In UI tests it is usually best to stop immediately when a failure occurs.
        continueAfterFailure = false
    }

    override func tearDownWithError() throws {
        // Put teardown code here.
    }

    // MARK: - Accessibility Smoke Tests

    /// Verifies primary entry flow remains usable at a large accessibility text size.
    @MainActor
    func testAccessibilitySmoke_LargeDynamicTypeEntryFlow() throws {
        let app = XCUIApplication()
        app.launchArguments = [
            "--ui-testing",
            "--disable-animations",
            "--reset-state",
            "-UIPreferredContentSizeCategoryName",
            "UICTContentSizeCategoryAccessibilityXXXL"
        ]
        app.launch()

        let startPlanningButton = app.buttons["home.startPlanningButton"]
        XCTAssertTrue(startPlanningButton.waitForExistence(timeout: 20), "Start Planning should exist at large Dynamic Type")
        // At XXXL the button may be pushed below the fold — scroll into view
        startPlanningButton.scrollIntoView(in: app.scrollViews.firstMatch)
        XCTAssertTrue(startPlanningButton.isHittable, "Start Planning should remain hittable at large Dynamic Type")
        startPlanningButton.tap()

        let dateRangeMode = app.buttons["wizard.planningMode.dateRange"]
        XCTAssertTrue(dateRangeMode.waitForExistence(timeout: 10), "Planning mode options should load")
        dateRangeMode.scrollIntoView(in: app.scrollViews.firstMatch)
        XCTAssertTrue(dateRangeMode.isHittable, "Planning mode option should remain hittable at large Dynamic Type")
    }

    // MARK: - Shared Wizard Helpers

    /// Launches the app with standard UI testing arguments and taps Start Planning.
    private func launchAndStartPlanning() -> XCUIApplication {
        let app = XCUIApplication()
        app.launchArguments = [
            "--ui-testing",
            "--disable-animations",
            "--reset-state"
        ]
        app.launch()

        let startPlanningButton = app.buttons["home.startPlanningButton"]
        XCTAssertTrue(startPlanningButton.waitForExistence(timeout: 10), "Start Planning button should exist")
        startPlanningButton.tap()
        return app
    }

    /// Fills the wizard: selects By Dates mode, navigates to June 2026,
    /// picks June 11-16, MLB, and Central region.
    private func fillWizardSteps(app: XCUIApplication) {
        // Choose "By Dates" mode
        let dateRangeMode = app.buttons["wizard.planningMode.dateRange"]
        XCTAssertTrue(dateRangeMode.waitForExistence(timeout: 10), "Date Range mode should exist")
        dateRangeMode.tap()

        // Navigate to June 2026
        let nextMonthButton = app.buttons["wizard.dates.nextMonth"]
        nextMonthButton.scrollIntoView(in: app.scrollViews.firstMatch)
        let monthLabel = app.staticTexts["wizard.dates.monthLabel"]
        var attempts = 0
        while !monthLabel.label.contains("June 2026") && attempts < 12 {
            nextMonthButton.tap()
            // Wait for the month label to update after tap
            let updatedLabel = app.staticTexts["wizard.dates.monthLabel"]
            _ = updatedLabel.waitForExistence(timeout: 2)
            attempts += 1
        }

        // Select June 11
        let june11 = app.buttons["wizard.dates.day.2026-06-11"]
        june11.scrollIntoView(in: app.scrollViews.firstMatch)
        june11.tap()

        // Wait for June 16 to be available after selecting the start date
        let june16 = app.buttons["wizard.dates.day.2026-06-16"]
        XCTAssertTrue(june16.waitForExistence(timeout: 5), "June 16 button should exist after selecting start date")
        june16.scrollIntoView(in: app.scrollViews.firstMatch)
        june16.tap()

        // Select MLB
        let mlbButton = app.buttons["wizard.sports.mlb"]
        mlbButton.scrollIntoView(in: app.scrollViews.firstMatch)
        mlbButton.tap()

        // Select Central region
        let centralRegion = app.buttons["wizard.regions.central"]
        centralRegion.scrollIntoView(in: app.scrollViews.firstMatch)
        centralRegion.tap()
    }

    /// Taps "Plan My Trip" after waiting for it to become enabled.
    private func tapPlanTrip(app: XCUIApplication) {
        let planTripButton = app.buttons["wizard.planTripButton"]
        planTripButton.scrollIntoView(in: app.scrollViews.firstMatch)
        let enabledPred = NSPredicate(format: "isEnabled == true")
        let enabledExp = XCTNSPredicateExpectation(predicate: enabledPred, object: planTripButton)
        let waitResult = XCTWaiter.wait(for: [enabledExp], timeout: 10)
        XCTAssertEqual(waitResult, .completed, "Plan My Trip should become enabled")
        planTripButton.tap()
    }

    /// Selects "Most Games" sort option from the sort dropdown.
    private func selectMostGamesSort(app: XCUIApplication) {
        let sortDropdown = app.buttons["tripOptions.sortDropdown"]
        XCTAssertTrue(sortDropdown.waitForExistence(timeout: 30), "Sort dropdown should exist")
        sortDropdown.tap()

        // Wait for the sort option to appear
        let mostGamesOption = app.buttons["tripOptions.sortOption.mostgames"]
        do {
            let found = mostGamesOption.waitForExistence(timeout: 3)
            if found {
                mostGamesOption.tap()
            } else {
                XCTFail("Expected element with accessibility ID 'tripOptions.sortOption.mostgames' but it did not appear")
            }
        }

        // Wait for sort to be applied and trip list to update
        let anyTrip = app.buttons.matching(NSPredicate(format: "identifier BEGINSWITH 'tripOptions.trip.'")).firstMatch
        XCTAssertTrue(anyTrip.waitForExistence(timeout: 10), "Trip options should appear after sorting")
    }

    /// Selects the first available trip option and waits for the detail view to load.
    private func selectFirstTrip(app: XCUIApplication) {
        let anyTrip = app.buttons.matching(NSPredicate(format: "identifier BEGINSWITH 'tripOptions.trip.'")).firstMatch
        XCTAssertTrue(anyTrip.waitForExistence(timeout: 10), "At least one trip option should exist")
        anyTrip.tap()

        // Wait for the trip detail view to load
        let favoriteButton = app.buttons["tripDetail.favoriteButton"]
        XCTAssertTrue(favoriteButton.waitForExistence(timeout: 10), "Trip detail view should load with favorite button")
    }

    // MARK: - Demo Flow Test (Continuous Scroll Mode)

    /// Complete trip planning demo with continuous smooth scrolling.
    ///
    /// In demo mode, the app auto-selects each step as it appears on screen:
    /// - Planning Mode: "By Dates"
    /// - Dates: June 11-16, 2026
    /// - Sport: MLB
    /// - Region: Central US
    /// - Sort: Most Games
    /// - Trip: 4th option
    /// - Action: Auto-favorite
    ///
    /// The test just needs to:
    /// 1. Launch with -DemoMode argument
    /// 2. Tap "Start Planning"
    /// 3. Continuously scroll - items auto-select as they appear
    /// 4. Wait for transitions to complete
    @MainActor
    func testTripPlanningDemoFlow() throws {
        let app = launchAndStartPlanning()
        fillWizardSteps(app: app)
        tapPlanTrip(app: app)
        selectMostGamesSort(app: app)
        selectFirstTrip(app: app)

        // Scroll through itinerary
        for _ in 1...5 {
            slowSwipeUp(app: app)
            // Wait for scroll content to settle
            let scrollView = app.scrollViews.firstMatch
            _ = scrollView.waitForExistence(timeout: 3)
        }

        // Favorite the trip
        let favoriteButton = app.buttons["tripDetail.favoriteButton"]
        favoriteButton.scrollIntoView(in: app.scrollViews.firstMatch, direction: .up)
        XCTAssertTrue(favoriteButton.exists, "Favorite button should exist")
        favoriteButton.tap()

        // Wait for favorite state to update
        let favoritedPredicate = NSPredicate(format: "isSelected == true OR label CONTAINS 'Favorited' OR label CONTAINS 'Unfavorite'")
        let favoritedExpectation = XCTNSPredicateExpectation(predicate: favoritedPredicate, object: favoriteButton)
        let result = XCTWaiter.wait(for: [favoritedExpectation], timeout: 5)
        // If the button doesn't change state visually, at least verify it still exists
        if result != .completed {
            XCTAssertTrue(favoriteButton.exists, "Favorite button should still exist after tapping")
        }
    }

    // MARK: - Manual Demo Flow Test (Original)

    /// Original manual test flow for comparison or when demo mode is not desired.
    /// This test verifies the same wizard flow as the demo test, plus additional
    /// scrolling through the itinerary detail view.
    @MainActor
    func testTripPlanningManualFlow() throws {
        let app = launchAndStartPlanning()
        fillWizardSteps(app: app)
        tapPlanTrip(app: app)
        selectMostGamesSort(app: app)
        selectFirstTrip(app: app)

        // Scroll through itinerary
        for _ in 1...5 {
            slowSwipeUp(app: app)
            // Wait for scroll content to settle
            let scrollView = app.scrollViews.firstMatch
            _ = scrollView.waitForExistence(timeout: 3)
        }

        // Favorite the trip
        let favoriteButton = app.buttons["tripDetail.favoriteButton"]
        favoriteButton.scrollIntoView(in: app.scrollViews.firstMatch, direction: .up)
        XCTAssertTrue(favoriteButton.exists, "Favorite button should exist")
        favoriteButton.tap()

        // Wait for favorite state to update
        let favoritedPredicate = NSPredicate(format: "isSelected == true OR label CONTAINS 'Favorited' OR label CONTAINS 'Unfavorite'")
        let favoritedExpectation = XCTNSPredicateExpectation(predicate: favoritedPredicate, object: favoriteButton)
        let result = XCTWaiter.wait(for: [favoritedExpectation], timeout: 5)
        // If the button doesn't change state visually, at least verify it still exists
        if result != .completed {
            XCTAssertTrue(favoriteButton.exists, "Favorite button should still exist after tapping")
        }
    }

    // MARK: - Helper Methods

    /// Performs a slow swipe up gesture for smooth scrolling
    private func slowSwipeUp(app: XCUIApplication) {
        let start = app.coordinate(withNormalizedOffset: CGVector(dx: 0.5, dy: 0.7))
        let end = app.coordinate(withNormalizedOffset: CGVector(dx: 0.5, dy: 0.3))
        start.press(forDuration: 0.1, thenDragTo: end, withVelocity: .slow, thenHoldForDuration: 0.1)
    }

    /// Performs a slow swipe down gesture for smooth scrolling
    private func slowSwipeDown(app: XCUIApplication) {
        let start = app.coordinate(withNormalizedOffset: CGVector(dx: 0.5, dy: 0.3))
        let end = app.coordinate(withNormalizedOffset: CGVector(dx: 0.5, dy: 0.7))
        start.press(forDuration: 0.1, thenDragTo: end, withVelocity: .slow, thenHoldForDuration: 0.1)
    }

    // MARK: - Basic Tests

    @MainActor
    func testExample() throws {
        let app = XCUIApplication()
        app.launch()
    }

    @MainActor
    func testLaunchPerformance() throws {
        measure(metrics: [XCTApplicationLaunchMetric()]) {
            XCUIApplication().launch()
        }
    }
}