//
//  OnboardingSoftPaywallView.swift
//  SelfieCam
//
//  Soft paywall shown to free users during onboarding.
//  Presents premium benefits with options to upgrade or continue with free version.
//  Supports landscape and iPad layouts with max width constraints.
//

import SwiftUI
import Bedrock

struct OnboardingSoftPaywallView: View {
    @Bindable var viewModel: OnboardingViewModel
    @Bindable var settingsViewModel: SettingsViewModel
    @Binding var showPaywall: Bool
    let onComplete: () -> Void
    
    /// Premium manager for restore purchases
    @State private var premiumManager = PremiumManager()
    
    /// Whether a restore is in progress
    @State private var isRestoring = false
    
    var body: some View {
        OnboardingContentContainer {
            VStack(spacing: Design.Spacing.large) {
                Spacer()
                
                // Header
                VStack(spacing: Design.Spacing.medium) {
                    SymbolIcon("crown.fill", size: .hero, color: AppStatus.warning)
                    
                    OnboardingSectionTitle(
                        title: String(localized: "Unlock Pro Features"),
                        subtitle: String(localized: "Get the most out of SelfieCam")
                    )
                }
                
                Spacer()
                
                // Benefits list
                VStack(alignment: .leading, spacing: Design.Spacing.medium) {
                    OnboardingBenefitRow(
                        image: "paintpalette.fill",
                        text: String(localized: "Premium Colors + Custom Color Picker")
                    )
                    
                    OnboardingBenefitRow(
                        image: "sparkles",
                        text: String(localized: "Skin Smoothing Beauty Filter")
                    )
                    
                    OnboardingBenefitRow(
                        image: "arrow.left.and.right.righttriangle.left.righttriangle.right.fill",
                        text: String(localized: "True Mirror Mode")
                    )
                    
                    OnboardingBenefitRow(
                        image: "camera.filters",
                        text: String(localized: "HDR Mode for Better Photos")
                    )
                    
                    OnboardingBenefitRow(
                        image: "timer",
                        text: String(localized: "Extended Self-Timers (5s, 10s)")
                    )
                    
                    OnboardingBenefitRow(
                        image: "star.fill",
                        text: String(localized: "High Quality Photo Export")
                    )
                }
                .padding(.horizontal, Design.Spacing.large)
                
                Spacer()
                
                // Action buttons
                VStack(spacing: Design.Spacing.medium) {
                    // Upgrade button
                    OnboardingPrimaryButton(
                        title: String(localized: "Upgrade to Pro"),
                        action: { showPaywall = true },
                        icon: "crown.fill",
                        style: .premium
                    )
                    
                    // Maybe Later button
                    OnboardingSecondaryButton(
                        title: String(localized: "Maybe Later"),
                        action: {
                            viewModel.completeOnboarding(settingsViewModel: settingsViewModel)
                            onComplete()
                        }
                    )
                    
                    // Restore Purchases button
                    Button {
                        Task {
                            isRestoring = true
                            try? await premiumManager.restorePurchases()
                            isRestoring = false
                            
                            // Check if premium was restored
                            if premiumManager.isPremiumUnlocked {
                                viewModel.completeOnboarding(settingsViewModel: settingsViewModel)
                                onComplete()
                            }
                        }
                    } label: {
                        if isRestoring {
                            ProgressView()
                                .tint(.secondary)
                        } else {
                            Text(String(localized: "Restore Purchases"))
                        }
                    }
                    .font(.footnote)
                    .foregroundStyle(.secondary)
                    .disabled(isRestoring)
                }
                .padding(.horizontal, Design.Spacing.xLarge)
                .padding(.bottom, Design.Spacing.xLarge)
            }
            .padding(.horizontal, Design.Spacing.medium)
        }
        .onChange(of: viewModel.isPremiumUser) { _, isPremium in
            // If user subscribed during paywall, complete onboarding
            if isPremium {
                viewModel.completeOnboarding(settingsViewModel: settingsViewModel)
                onComplete()
            }
        }
    }
}

// MARK: - Preview

#Preview {
    OnboardingSoftPaywallView(
        viewModel: OnboardingViewModel(),
        settingsViewModel: SettingsViewModel(),
        showPaywall: .constant(false),
        onComplete: {}
    )
    .background(AppSurface.primary)
    .preferredColorScheme(.dark)
}

#Preview("Landscape", traits: .landscapeLeft) {
    OnboardingSoftPaywallView(
        viewModel: OnboardingViewModel(),
        settingsViewModel: SettingsViewModel(),
        showPaywall: .constant(false),
        onComplete: {}
    )
    .background(AppSurface.primary)
    .preferredColorScheme(.dark)
}