//
//  ExportableInsightsViews.swift
//  Reflect
//
//  Exportable insights views with sample AI-generated insights for screenshots.
//
import SwiftUI

// MARK: - Sample Insights Data

struct SampleInsightsData {

    static let monthInsights: [Insight] = [
        Insight(
            icon: "chart.line.uptrend.xyaxis",
            title: "Weekend Mood Boost",
            description: "Your mood is consistently 23% higher on weekends. Saturday mornings seem particularly positive for you.",
            mood: .great
        ),
        Insight(
            icon: "moon.stars",
            title: "Sleep Connection",
            description: "Days following 7+ hours of sleep show notably better moods. Prioritizing rest could help maintain your wellbeing.",
            mood: .good
        ),
        Insight(
            icon: "figure.walk",
            title: "Movement Matters",
            description: "Your mood averages 'Good' on days with 6,000+ steps, compared to 'Average' on less active days.",
            mood: .good
        ),
        Insight(
            icon: "calendar.badge.checkmark",
            title: "Consistent Logger",
            description: "You've logged your mood 28 out of 31 days this month. This consistency helps reveal meaningful patterns.",
            mood: nil
        ),
        Insight(
            icon: "arrow.up.right",
            title: "Upward Trend",
            description: "Your average mood has improved from 'Average' to 'Good' over the past two weeks. Keep it up!",
            mood: .good
        )
    ]

    static let yearInsights: [Insight] = [
        Insight(
            icon: "sun.max",
            title: "Summer Peak",
            description: "June through August showed your highest mood scores of the year, with 67% of days rated 'Good' or better.",
            mood: .great
        ),
        Insight(
            icon: "leaf",
            title: "Seasonal Patterns",
            description: "Your mood tends to dip slightly in late winter. Consider planning mood-boosting activities for February.",
            mood: .average
        ),
        Insight(
            icon: "star.fill",
            title: "Personal Best",
            description: "You achieved a 45-day streak of logging in March - your longest streak this year!",
            mood: nil
        ),
        Insight(
            icon: "heart.fill",
            title: "Most Common Mood",
            description: "'Good' has been your most frequent mood this year, appearing 42% of the time.",
            mood: .good
        ),
        Insight(
            icon: "chart.bar.fill",
            title: "Year in Review",
            description: "You've logged 312 mood entries this year. That's 85% consistency - well above average!",
            mood: nil
        )
    ]

    static let allTimeInsights: [Insight] = [
        Insight(
            icon: "trophy.fill",
            title: "Mood Champion",
            description: "Since you started, your overall mood average has steadily improved by 18%. Real progress!",
            mood: .great
        ),
        Insight(
            icon: "flame.fill",
            title: "Longest Streak",
            description: "Your all-time best logging streak is 89 days. You're building a powerful habit.",
            mood: nil
        ),
        Insight(
            icon: "calendar",
            title: "Tuesday Tendency",
            description: "Historically, Tuesdays are your most challenging day. Consider scheduling something enjoyable.",
            mood: .average
        ),
        Insight(
            icon: "sparkles",
            title: "Growth Mindset",
            description: "Your 'Great' days have increased from 12% to 24% since you started tracking. Wonderful progress!",
            mood: .great
        ),
        Insight(
            icon: "person.fill.checkmark",
            title: "Self-Awareness",
            description: "With 847 total entries, you've built remarkable insight into your emotional patterns.",
            mood: nil
        )
    ]
}

// MARK: - Exportable Insights View

struct ExportableInsightsView: View {
    let colorScheme: ColorScheme
    let moodTint: MoodTints
    let imagePack: MoodImages

    private var textColor: Color {
        colorScheme == .dark ? .white : .black
    }

    private var backgroundColor: Color {
        colorScheme == .dark ? Color(red: 0.11, green: 0.11, blue: 0.12) : Color(red: 0.95, green: 0.95, blue: 0.97)
    }

    var body: some View {
        VStack(spacing: 0) {
            // Status bar area (dynamic island space)
            Color.clear
                .frame(height: 59)

            // Main content
            VStack(spacing: 20) {
                // Header - matches InsightsView exactly
                HStack {
                    Text("Insights")
                        .font(.title.weight(.bold))
                        .foregroundColor(textColor)
                    Spacer()

                    // AI badge
                    HStack(spacing: 4) {
                        Image(systemName: "sparkles")
                            .font(.caption.weight(.medium))
                        Text("AI")
                            .font(.caption.weight(.semibold))
                    }
                    .foregroundColor(.white)
                    .padding(.horizontal, 8)
                    .padding(.vertical, 4)
                    .background(
                        LinearGradient(
                            colors: [.purple, .blue],
                            startPoint: .leading,
                            endPoint: .trailing
                        )
                    )
                    .clipShape(Capsule())
                }
                .padding(.horizontal)

                // This Month Section (show first 3 insights to fit)
                ExportableInsightsSectionView(
                    title: "This Month",
                    icon: "calendar",
                    insights: Array(SampleInsightsData.monthInsights.prefix(3)),
                    textColor: textColor,
                    moodTint: moodTint,
                    imagePack: imagePack,
                    colorScheme: colorScheme
                )

                // This Year Section (show first 2 insights to fit)
                ExportableInsightsSectionView(
                    title: "This Year",
                    icon: "calendar.badge.clock",
                    insights: Array(SampleInsightsData.yearInsights.prefix(2)),
                    textColor: textColor,
                    moodTint: moodTint,
                    imagePack: imagePack,
                    colorScheme: colorScheme
                )

                Spacer()
            }
            .padding(.top, 8)

            // Tab bar
            ExportableTabBar(colorScheme: colorScheme, selectedTab: "Insights")
        }
        .frame(maxWidth: .infinity, maxHeight: .infinity)
        .background(backgroundColor)
    }
}

// MARK: - Exportable Insights Section View

struct ExportableInsightsSectionView: View {
    let title: String
    let icon: String
    let insights: [Insight]
    let textColor: Color
    let moodTint: MoodTints
    let imagePack: MoodImages
    let colorScheme: ColorScheme

    var body: some View {
        VStack(spacing: 0) {
            // Section Header - matches InsightsSectionView exactly
            HStack {
                Image(systemName: icon)
                    .font(.headline.weight(.medium))
                    .foregroundColor(textColor.opacity(0.6))

                Text(title)
                    .font(.title3.weight(.bold))
                    .foregroundColor(textColor)

                Spacer()

                Image(systemName: "chevron.up")
                    .font(.caption.weight(.semibold))
                    .foregroundColor(textColor.opacity(0.4))
            }
            .padding(.horizontal, 16)
            .padding(.vertical, 14)

            // Insights List - matches InsightsSectionView exactly
            VStack(spacing: 10) {
                ForEach(insights) { insight in
                    ExportableInsightCardView(
                        insight: insight,
                        textColor: textColor,
                        moodTint: moodTint,
                        imagePack: imagePack,
                        colorScheme: colorScheme
                    )
                }
            }
            .padding(.horizontal, 16)
            .padding(.bottom, 16)
        }
        .background(
            RoundedRectangle(cornerRadius: 16)
                .fill(colorScheme == .dark ? Color(.systemGray6) : .white)
        )
        .padding(.horizontal)
    }
}

// MARK: - Exportable Insight Card View

struct ExportableInsightCardView: View {
    let insight: Insight
    let textColor: Color
    let moodTint: MoodTints
    let imagePack: MoodImages
    let colorScheme: ColorScheme

    private var accentColor: Color {
        if let mood = insight.mood {
            return moodTint.color(forMood: mood)
        }
        return .accentColor
    }

    var body: some View {
        // Matches InsightCardView exactly
        HStack(alignment: .top, spacing: 14) {
            // Icon
            ZStack {
                Circle()
                    .fill(accentColor.opacity(0.15))
                    .frame(width: 44, height: 44)

                if let mood = insight.mood {
                    imagePack.icon(forMood: mood)
                        .resizable()
                        .aspectRatio(contentMode: .fit)
                        .frame(width: 22, height: 22)
                        .foregroundColor(accentColor)
                } else {
                    Image(systemName: insight.icon)
                        .font(.headline.weight(.semibold))
                        .foregroundColor(accentColor)
                }
            }

            // Text Content
            VStack(alignment: .leading, spacing: 4) {
                Text(insight.title)
                    .font(.subheadline.weight(.semibold))
                    .foregroundColor(textColor)

                Text(insight.description)
                    .font(.subheadline)
                    .foregroundColor(textColor.opacity(0.7))
                    .fixedSize(horizontal: false, vertical: true)
            }

            Spacer()
        }
        .padding(14)
        .background(
            RoundedRectangle(cornerRadius: 12)
                .fill(colorScheme == .dark ? Color(.systemGray5) : Color(.systemGray6))
        )
    }
}

// MARK: - Exportable Tab Bar

struct ExportableTabBar: View {
    let colorScheme: ColorScheme
    let selectedTab: String

    private var textColor: Color {
        colorScheme == .dark ? .white : .black
    }

    private var tabBarBackground: Color {
        colorScheme == .dark ? Color(red: 0.11, green: 0.11, blue: 0.12) : .white
    }

    var body: some View {
        HStack(spacing: 0) {
            tabItem(icon: "list.bullet", title: "Day", isSelected: selectedTab == "Day")
            tabItem(icon: "calendar", title: "Month", isSelected: selectedTab == "Month")
            tabItem(icon: "chart.bar.fill", title: "Year", isSelected: selectedTab == "Year")
            tabItem(icon: "lightbulb.fill", title: "Insights", isSelected: selectedTab == "Insights")
            tabItem(icon: "gearshape.fill", title: "Settings", isSelected: selectedTab == "Settings")
        }
        .padding(.top, 8)
        .padding(.bottom, 28) // Home indicator space
        .background(tabBarBackground)
    }

    private func tabItem(icon: String, title: String, isSelected: Bool) -> some View {
        VStack(spacing: 4) {
            Image(systemName: icon)
                .font(.system(size: 22))
            Text(title)
                .font(.caption2)
        }
        .foregroundColor(isSelected ? .accentColor : textColor.opacity(0.4))
        .frame(maxWidth: .infinity)
    }
}

// MARK: - Insights Export Container

struct ExportableInsightsContainer<Content: View>: View {
    let width: CGFloat
    let height: CGFloat
    let colorScheme: ColorScheme
    let content: Content

    init(width: CGFloat, height: CGFloat, colorScheme: ColorScheme, @ViewBuilder content: () -> Content) {
        self.width = width
        self.height = height
        self.colorScheme = colorScheme
        self.content = content()
    }

    private var backgroundColor: Color {
        colorScheme == .dark ? Color(red: 0.11, green: 0.11, blue: 0.12) : Color(red: 0.95, green: 0.95, blue: 0.97)
    }

    var body: some View {
        content
            .environment(\.colorScheme, colorScheme)
            .frame(width: width, height: height)
            .background(backgroundColor)
    }
}