import SwiftUI

struct FeaturedGameCard: View {
    let game: Game
    let onSelect: () -> Void

    private var awayColor: Color { TeamAssets.color(for: game.awayTeam.code) }
    private var homeColor: Color { TeamAssets.color(for: game.homeTeam.code) }

    private var awayPitcherName: String? {
        game.pitchers?.components(separatedBy: " vs ").first
    }
    private var homePitcherName: String? {
        let parts = game.pitchers?.components(separatedBy: " vs ") ?? []
        return parts.count > 1 ? parts.last : nil
    }

    private var stadiumImageURL: URL? {
        TeamAssets.stadiumURL(for: game.homeTeam.code)
    }

    var body: some View {
        Button(action: onSelect) {
            ZStack(alignment: .topLeading) {
                // White/cream base
                DS.Colors.panelFill

                // Stadium image on the right side, fading into white on the left
                HStack(spacing: 0) {
                    Spacer()
                    ZStack(alignment: .leading) {
                        stadiumImage
                            .frame(width: imageWidth)

                        // White fade from left edge of image
                        LinearGradient(
                            colors: [
                                DS.Colors.panelFill,
                                DS.Colors.panelFill.opacity(0.8),
                                DS.Colors.panelFill.opacity(0.3),
                                .clear
                            ],
                            startPoint: .leading,
                            endPoint: .trailing
                        )
                        .frame(width: fadeWidth)
                    }
                }

                // Text content on the left
                VStack(alignment: .leading, spacing: contentSpacing) {
                    // Status badge
                    statusBadge

                    // Giant matchup title — thin "away" bold "home"
                    VStack(alignment: .leading, spacing: 2) {
                        HStack(spacing: 0) {
                            Text(game.awayTeam.displayName)
                                .font(titleThinFont)
                                .foregroundStyle(DS.Colors.textSecondary)
                            Text(" vs ")
                                .font(titleThinFont)
                                .foregroundStyle(DS.Colors.textTertiary)
                        }
                        Text(game.homeTeam.displayName)
                            .font(titleBoldFont)
                            .foregroundStyle(DS.Colors.interactive)
                    }

                    // Metadata line
                    metadataLine

                    // Live score or description
                    if game.isLive {
                        liveSection
                    } else if game.isFinal {
                        finalSection
                    } else {
                        scheduledSection
                    }

                    // CTA buttons
                    HStack(spacing: 14) {
                        if game.hasStreams {
                            Label("Watch Now", systemImage: "play.fill")
                                .font(ctaFont)
                                .foregroundStyle(DS.Colors.interactive)
                                .padding(.horizontal, ctaPadH)
                                .padding(.vertical, ctaPadV)
                                .overlay(
                                    Capsule().strokeBorder(DS.Colors.interactive, lineWidth: 2)
                                )
                        }

                        Image(systemName: "plus")
                            .font(ctaFont)
                            .foregroundStyle(DS.Colors.textTertiary)
                            .padding(ctaPadV)
                            .overlay(
                                Circle().strokeBorder(DS.Colors.textQuaternary, lineWidth: 1.5)
                            )
                    }
                }
                .padding(.horizontal, heroPadH)
                .padding(.vertical, heroPadV)
                .frame(maxWidth: textAreaWidth, alignment: .topLeading)
            }
            .frame(height: heroHeight)
            .clipShape(RoundedRectangle(cornerRadius: heroRadius, style: .continuous))
            .shadow(color: .black.opacity(0.08), radius: 30, y: 12)
        }
        .platformCardStyle()
    }

    // MARK: - Live Section

    @ViewBuilder
    private var liveSection: some View {
        VStack(alignment: .leading, spacing: 12) {
            HStack(alignment: .firstTextBaseline, spacing: 16) {
                if let away = game.awayTeam.score, let home = game.homeTeam.score {
                    Text("\(away) - \(home)")
                        .font(scoreFont)
                        .foregroundStyle(DS.Colors.textPrimary)
                        .monospacedDigit()
                        .contentTransition(.numericText())
                }

                if let inning = game.currentInningDisplay {
                    Text(inning)
                        .font(inningFont)
                        .foregroundStyle(DS.Colors.live)
                }
            }

            if let linescore = game.linescore {
                DiamondView(
                    balls: linescore.balls ?? 0,
                    strikes: linescore.strikes ?? 0,
                    outs: linescore.outs ?? 0
                )
            }
        }
    }

    // MARK: - Final Section

    @ViewBuilder
    private var finalSection: some View {
        if let away = game.awayTeam.score, let home = game.homeTeam.score {
            HStack(spacing: 12) {
                Text("\(away) - \(home)")
                    .font(scoreFont)
                    .foregroundStyle(DS.Colors.textPrimary)
                    .monospacedDigit()
                Text("FINAL")
                    .font(inningFont)
                    .foregroundStyle(DS.Colors.textTertiary)
            }
        }
    }

    // MARK: - Scheduled Section

    @ViewBuilder
    private var scheduledSection: some View {
        VStack(alignment: .leading, spacing: 6) {
            if let pitchers = game.pitchers {
                Text(pitchers)
                    .font(descFont)
                    .foregroundStyle(DS.Colors.textSecondary)
                    .lineLimit(2)
            }
        }
    }

    // MARK: - Status Badge

    @ViewBuilder
    private var statusBadge: some View {
        switch game.status {
        case .live(let inning):
            HStack(spacing: 6) {
                Circle().fill(DS.Colors.live).frame(width: 8, height: 8)
                Text(inning ?? "LIVE")
                    .font(badgeFont)
                    .foregroundStyle(DS.Colors.live)
            }

        case .scheduled(let time):
            Text(time)
                .font(badgeFont)
                .foregroundStyle(DS.Colors.textTertiary)

        case .final_:
            Text("FINAL")
                .font(badgeFont)
                .foregroundStyle(DS.Colors.textTertiary)

        case .unknown:
            EmptyView()
        }
    }

    // MARK: - Metadata Line

    @ViewBuilder
    private var metadataLine: some View {
        HStack(spacing: metaSeparatorWidth) {
            if let venue = game.venue {
                Text(venue)
            }
            if let record = game.awayTeam.record {
                Text("\(game.awayTeam.code) \(record)")
            }
            if let record = game.homeTeam.record {
                Text("\(game.homeTeam.code) \(record)")
            }
            if !game.broadcasts.isEmpty {
                Text("\(game.broadcasts.count) feed\(game.broadcasts.count == 1 ? "" : "s")")
            }
        }
        .font(metaFont)
        .foregroundStyle(DS.Colors.textTertiary)
    }

    // MARK: - Stadium Image

    @ViewBuilder
    private var stadiumImage: some View {
        if let url = stadiumImageURL {
            AsyncImage(url: url) { phase in
                switch phase {
                case .success(let image):
                    image
                        .resizable()
                        .aspectRatio(contentMode: .fill)
                        .frame(height: heroHeight)
                        .clipped()
                default:
                    fallbackImage
                }
            }
        } else {
            fallbackImage
        }
    }

    @ViewBuilder
    private var fallbackImage: some View {
        ZStack {
            LinearGradient(
                colors: [awayColor.opacity(0.15), homeColor.opacity(0.15)],
                startPoint: .leading,
                endPoint: .trailing
            )

            HStack(spacing: fallbackLogoGap) {
                TeamLogoView(team: game.awayTeam, size: fallbackLogoSize)
                    .opacity(0.4)
                TeamLogoView(team: game.homeTeam, size: fallbackLogoSize)
                    .opacity(0.4)
            }
        }
    }

    // MARK: - Platform Sizing

    #if os(tvOS)
    private var heroHeight: CGFloat { 480 }
    private var heroRadius: CGFloat { 28 }
    private var heroPadH: CGFloat { 60 }
    private var heroPadV: CGFloat { 50 }
    private var contentSpacing: CGFloat { 16 }
    private var imageWidth: CGFloat { 900 }
    private var fadeWidth: CGFloat { 400 }
    private var textAreaWidth: CGFloat { 700 }
    private var metaSeparatorWidth: CGFloat { 18 }
    private var fallbackLogoSize: CGFloat { 120 }
    private var fallbackLogoGap: CGFloat { 40 }

    private var titleThinFont: Font { .system(size: 48, weight: .light) }
    private var titleBoldFont: Font { .system(size: 52, weight: .black, design: .rounded) }
    private var scoreFont: Font { .system(size: 64, weight: .black, design: .rounded) }
    private var inningFont: Font { .system(size: 28, weight: .bold, design: .rounded) }
    private var badgeFont: Font { .system(size: 22, weight: .bold, design: .rounded) }
    private var metaFont: Font { .system(size: 22, weight: .medium) }
    private var descFont: Font { .system(size: 24, weight: .medium) }
    private var ctaFont: Font { .system(size: 24, weight: .bold) }
    private var ctaPadH: CGFloat { 32 }
    private var ctaPadV: CGFloat { 14 }
    #else
    private var heroHeight: CGFloat { 340 }
    private var heroRadius: CGFloat { 22 }
    private var heroPadH: CGFloat { 28 }
    private var heroPadV: CGFloat { 28 }
    private var contentSpacing: CGFloat { 10 }
    private var imageWidth: CGFloat { 400 }
    private var fadeWidth: CGFloat { 200 }
    private var textAreaWidth: CGFloat { 350 }
    private var metaSeparatorWidth: CGFloat { 12 }
    private var fallbackLogoSize: CGFloat { 60 }
    private var fallbackLogoGap: CGFloat { 20 }

    private var titleThinFont: Font { .system(size: 28, weight: .light) }
    private var titleBoldFont: Font { .system(size: 32, weight: .black, design: .rounded) }
    private var scoreFont: Font { .system(size: 40, weight: .black, design: .rounded) }
    private var inningFont: Font { .system(size: 18, weight: .bold, design: .rounded) }
    private var badgeFont: Font { .system(size: 14, weight: .bold, design: .rounded) }
    private var metaFont: Font { .system(size: 14, weight: .medium) }
    private var descFont: Font { .system(size: 15, weight: .medium) }
    private var ctaFont: Font { .system(size: 16, weight: .bold) }
    private var ctaPadH: CGFloat { 22 }
    private var ctaPadV: CGFloat { 10 }
    #endif
}