//
//  OnboardingTests.swift
//  Tests iOS
//
//  Onboarding flow completion and non-repetition tests.
//

import XCTest

final class OnboardingTests: BaseUITestCase {
    override var seedFixture: String? { "empty" }
    override var skipOnboarding: Bool { false }

    /// TC-120: Complete the full onboarding flow.
    func testOnboarding_CompleteFlow() {
        // Welcome screen should appear
        let welcomeText = app.staticTexts.matching(
            NSPredicate(format: "label CONTAINS[cd] %@", "Welcome to Feels")
        ).firstMatch
        XCTAssertTrue(
            welcomeText.waitForExistence(timeout: 10),
            "Welcome screen should appear on first launch"
        )

        captureScreenshot(name: "onboarding_welcome")

        // Swipe through screens with waits to ensure page transitions complete
        swipeAndWait() // Welcome → Time
        captureScreenshot(name: "onboarding_time")

        swipeAndWait() // Time → Day

        // Select "Today" if the button exists
        let todayButton = app.descendants(matching: .any)
            .matching(identifier: "onboarding_day_today")
            .firstMatch
        if todayButton.waitForExistence(timeout: 3) {
            todayButton.coordinate(withNormalizedOffset: CGVector(dx: 0.5, dy: 0.5)).tap()
        }

        captureScreenshot(name: "onboarding_day")

        swipeAndWait() // Day → Style
        captureScreenshot(name: "onboarding_style")

        swipeAndWait() // Style → Subscription
        captureScreenshot(name: "onboarding_subscription")

        // Tap "Maybe Later" to complete onboarding
        let skipButton = app.descendants(matching: .any)
            .matching(identifier: "onboarding_skip_button")
            .firstMatch

        // If skip button isn't visible, try one more swipe (in case a page was added)
        if !skipButton.waitForExistence(timeout: 5) {
            swipeAndWait()
        }

        XCTAssertTrue(
            skipButton.waitForExistence(timeout: 5),
            "Skip/Maybe Later button should exist on subscription screen"
        )
        skipButton.coordinate(withNormalizedOffset: CGVector(dx: 0.5, dy: 0.5)).tap()

        // After onboarding, the tab bar should appear
        let tabBar = app.tabBars.firstMatch
        XCTAssertTrue(
            tabBar.waitForExistence(timeout: 10),
            "Tab bar should be visible after completing onboarding"
        )

        captureScreenshot(name: "onboarding_complete")
    }

    /// TC-121: After completing onboarding, relaunch should go directly to Day view.
    func testOnboarding_DoesNotRepeatAfterCompletion() {
        // First, complete onboarding
        let welcomeText = app.staticTexts.matching(
            NSPredicate(format: "label CONTAINS[cd] %@", "Welcome to Feels")
        ).firstMatch

        if welcomeText.waitForExistence(timeout: 5) {
            // Swipe through all screens
            swipeAndWait() // → Time
            swipeAndWait() // → Day
            swipeAndWait() // → Style
            swipeAndWait() // → Subscription

            let skipButton = app.descendants(matching: .any)
                .matching(identifier: "onboarding_skip_button")
                .firstMatch
            if !skipButton.waitForExistence(timeout: 5) {
                swipeAndWait()
            }
            if skipButton.waitForExistence(timeout: 5) {
                skipButton.coordinate(withNormalizedOffset: CGVector(dx: 0.5, dy: 0.5)).tap()
            }
        }

        // Wait for main app to load
        let tabBar = app.tabBars.firstMatch
        XCTAssertTrue(
            tabBar.waitForExistence(timeout: 10),
            "Tab bar should appear after onboarding"
        )

        // Terminate and relaunch (keeping --reset-state OUT to preserve onboarding completion)
        app.terminate()

        // Relaunch WITHOUT reset-state so onboarding completion is preserved
        let freshApp = XCUIApplication()
        freshApp.launchArguments = ["--ui-testing", "--disable-animations", "--bypass-subscription", "--skip-onboarding"]
        freshApp.launch()

        // Tab bar should appear immediately (no onboarding)
        let freshTabBar = freshApp.tabBars.firstMatch
        XCTAssertTrue(
            freshTabBar.waitForExistence(timeout: 10),
            "Tab bar should appear immediately on relaunch (no onboarding)"
        )

        // Welcome screen should NOT appear
        let welcomeAgain = freshApp.staticTexts.matching(
            NSPredicate(format: "label CONTAINS[cd] %@", "Welcome to Feels")
        ).firstMatch
        XCTAssertFalse(
            welcomeAgain.waitForExistence(timeout: 2),
            "Onboarding should not appear on second launch"
        )

        captureScreenshot(name: "no_onboarding_on_relaunch")
    }

    /// Swipe left with a brief wait for the page transition to settle.
    /// Uses a coordinate-based swipe for more reliable page advancement in paged TabView.
    private func swipeAndWait() {
        // Use a wide swipe from right to left for reliable page advancement
        let start = app.coordinate(withNormalizedOffset: CGVector(dx: 0.85, dy: 0.5))
        let end = app.coordinate(withNormalizedOffset: CGVector(dx: 0.15, dy: 0.5))
        start.press(forDuration: 0.05, thenDragTo: end)
        // Allow the paged TabView animation to settle
        _ = app.waitForExistence(timeout: 1.0)
    }
}