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 heroImageURL: URL? {
        if let pitcherId = game.homePitcherId {
            return URL(string: "https://img.mlbstatic.com/mlb-photos/image/upload/w_1400,q_auto:best/v1/people/\(pitcherId)/action/hero/current")
        }
        if let pitcherId = game.awayPitcherId {
            return URL(string: "https://img.mlbstatic.com/mlb-photos/image/upload/w_1400,q_auto:best/v1/people/\(pitcherId)/action/hero/current")
        }
        if let teamId = game.homeTeam.teamId {
            return URL(string: "https://midfield.mlbstatic.com/v1/team/\(teamId)/spots/1200")
        }
        return nil
    }

    var body: some View {
        Button(action: onSelect) {
            ZStack(alignment: .topLeading) {
                backgroundLayer

                VStack(alignment: .leading, spacing: contentSpacing) {
                    headerRow

                    HStack(alignment: .bottom, spacing: 28) {
                        VStack(alignment: .leading, spacing: 16) {
                            scoreboardRow(team: game.awayTeam, isLeading: isWinning(away: true))
                            scoreboardRow(team: game.homeTeam, isLeading: isWinning(away: false))
                        }
                        .frame(maxWidth: .infinity, alignment: .leading)

                        detailPanel
                            .frame(width: detailPanelWidth, alignment: .trailing)
                    }

                    insightStrip
                }
                .padding(.horizontal, heroPadH)
                .padding(.vertical, heroPadV)
            }
            .frame(maxWidth: .infinity)
            .frame(height: heroHeight)
            .clipShape(RoundedRectangle(cornerRadius: heroRadius, style: .continuous))
            .overlay(
                RoundedRectangle(cornerRadius: heroRadius, style: .continuous)
                    .strokeBorder(Color.white.opacity(0.08), lineWidth: 1)
            )
            .shadow(color: .black.opacity(0.32), radius: 36, y: 18)
        }
        .platformCardStyle()
    }

    private var backgroundLayer: some View {
        ZStack {
            RoundedRectangle(cornerRadius: heroRadius, style: .continuous)
                .fill(
                    LinearGradient(
                        colors: [
                            DS.Colors.panelFill,
                            DS.Colors.backgroundElevated,
                            Color.black.opacity(0.94),
                        ],
                        startPoint: .topLeading,
                        endPoint: .bottomTrailing
                    )
                )

            // Team color wash — gradient instead of blur for performance
            LinearGradient(
                colors: [
                    awayColor.opacity(0.2),
                    .clear,
                    homeColor.opacity(0.18),
                ],
                startPoint: .leading,
                endPoint: .trailing
            )

            heroImage
                .frame(maxWidth: .infinity, maxHeight: .infinity)
                .overlay {
                    LinearGradient(
                        colors: [
                            Color.black.opacity(0.85),
                            Color.black.opacity(0.48),
                            Color.black.opacity(0.22),
                        ],
                        startPoint: .leading,
                        endPoint: .trailing
                    )
                }

            LinearGradient(
                colors: [
                    Color.black.opacity(0.16),
                    Color.black.opacity(0.52),
                ],
                startPoint: .top,
                endPoint: .bottom
            )
        }
    }

    private var headerRow: some View {
        HStack(alignment: .top, spacing: 20) {
            VStack(alignment: .leading, spacing: 10) {
                HStack(spacing: 10) {
                    statusBadge

                    if let gameType = game.gameType, !gameType.isEmpty {
                        metaBadge(gameType.uppercased(), tint: DS.Colors.media)
                    }

                    if game.hasStreams {
                        metaBadge("\(game.broadcasts.count) FEED\(game.broadcasts.count == 1 ? "" : "S")", tint: DS.Colors.interactive)
                    }
                }

                Text("Featured Matchup")
                    .font(labelFont)
                    .foregroundStyle(DS.Colors.textTertiary)
                    .tracking(1.8)

                Text(game.displayTitle)
                    .font(titleFont)
                    .foregroundStyle(DS.Colors.onDarkPrimary)
                    .lineLimit(2)
            }

            Spacer(minLength: 16)

            HStack(spacing: 12) {
                if let venue = game.venue {
                    summaryTag(value: venue, systemImage: "mappin.and.ellipse")
                }

                if game.isBlackedOut {
                    summaryTag(value: "Blackout", systemImage: "eye.slash.fill")
                } else if game.hasStreams {
                    summaryTag(value: "Watch Now", systemImage: "play.fill")
                }
            }
        }
    }

    private func scoreboardRow(team: TeamInfo, isLeading: Bool) -> some View {
        HStack(spacing: 16) {
            TeamLogoView(team: team, size: logoSize)

            VStack(alignment: .leading, spacing: 5) {
                Text(team.code)
                    .font(codeFont)
                    .foregroundStyle(.white)

                Text(team.displayName)
                    .font(nameFont)
                    .foregroundStyle(DS.Colors.onDarkSecondary)

                HStack(spacing: 10) {
                    if let record = team.record {
                        Text(record)
                            .font(metadataFont)
                            .foregroundStyle(DS.Colors.onDarkSecondary)
                    }

                    if let summary = team.standingSummary {
                        Text(summary)
                            .font(metadataFont)
                            .foregroundStyle(DS.Colors.onDarkTertiary)
                            .lineLimit(1)
                    }
                }
            }

            Spacer(minLength: 8)

            Text(team.score.map(String.init) ?? "—")
                .font(scoreFont)
                .foregroundStyle(isLeading ? .white : DS.Colors.onDarkSecondary)
                .monospacedDigit()
        }
        .padding(.horizontal, rowPadH)
        .padding(.vertical, rowPadV)
        .background(
            RoundedRectangle(cornerRadius: 22, style: .continuous)
                .fill(Color.black.opacity(isLeading ? 0.34 : 0.22))
                .overlay {
                    RoundedRectangle(cornerRadius: 22, style: .continuous)
                        .strokeBorder(Color.white.opacity(isLeading ? 0.10 : 0.06), lineWidth: 1)
                }
        )
    }

    @ViewBuilder
    private var detailPanel: some View {
        VStack(alignment: .leading, spacing: 16) {
            switch game.status {
            case .live:
                livePanel
            case .final_:
                finalPanel
            case .scheduled:
                scheduledPanel
            case .unknown:
                statusFallbackPanel
            }
        }
        .padding(detailPanelPad)
        .background(
            RoundedRectangle(cornerRadius: 26, style: .continuous)
                .fill(Color.black.opacity(0.34))
                .overlay {
                    RoundedRectangle(cornerRadius: 26, style: .continuous)
                        .strokeBorder(Color.white.opacity(0.08), lineWidth: 1)
                }
        )
    }

    private var livePanel: some View {
        VStack(alignment: .leading, spacing: 14) {
            Text("Live Situation")
                .font(panelLabelFont)
                .foregroundStyle(DS.Colors.textTertiary)

            Text(game.currentInningDisplay ?? "Live")
                .font(panelValueFont)
                .foregroundStyle(.white)

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

                if let awayRuns = linescore.teams?.away?.runs,
                   let homeRuns = linescore.teams?.home?.runs,
                   let awayHits = linescore.teams?.away?.hits,
                   let homeHits = linescore.teams?.home?.hits {
                    HStack(spacing: 14) {
                        detailMetric(label: game.awayTeam.code, value: "\(awayRuns)R / \(awayHits)H")
                        detailMetric(label: game.homeTeam.code, value: "\(homeRuns)R / \(homeHits)H")
                    }
                }
            }
        }
    }

    private var finalPanel: some View {
        VStack(alignment: .leading, spacing: 12) {
            Text("Final")
                .font(panelLabelFont)
                .foregroundStyle(DS.Colors.textTertiary)

            Text(game.scoreDisplay ?? "Complete")
                .font(panelValueFont)
                .foregroundStyle(.white)

            Text("Box score, play timeline, and highlights are ready in Game Center.")
                .font(panelBodyFont)
                .foregroundStyle(DS.Colors.onDarkSecondary)
                .fixedSize(horizontal: false, vertical: true)
        }
    }

    private var scheduledPanel: some View {
        VStack(alignment: .leading, spacing: 12) {
            Text("Starting Pitchers")
                .font(panelLabelFont)
                .foregroundStyle(DS.Colors.textTertiary)

            Text(pitcherMatchupText)
                .font(panelValueFont)
                .foregroundStyle(.white)
                .lineLimit(3)

            if let startTime = game.startTime {
                Text("First pitch \(startTime)")
                    .font(panelBodyFont)
                    .foregroundStyle(DS.Colors.onDarkSecondary)
            }
        }
    }

    private var statusFallbackPanel: some View {
        VStack(alignment: .leading, spacing: 12) {
            Text("Game State")
                .font(panelLabelFont)
                .foregroundStyle(DS.Colors.textTertiary)

            Text(game.status.label.isEmpty ? "Awaiting update" : game.status.label)
                .font(panelValueFont)
                .foregroundStyle(.white)
        }
    }

    private var insightStrip: some View {
        HStack(spacing: 14) {
            insightCard(
                title: "Pitching",
                value: pitcherInsightText,
                accent: DS.Colors.media
            )

            insightCard(
                title: "Venue",
                value: game.venue ?? "TBD",
                accent: DS.Colors.interactive
            )

            insightCard(
                title: "Feeds",
                value: game.isBlackedOut ? "Blackout" : "\(game.broadcasts.count) available",
                accent: game.isBlackedOut ? DS.Colors.live : DS.Colors.positive
            )
        }
    }

    private func insightCard(title: String, value: String, accent: Color) -> some View {
        VStack(alignment: .leading, spacing: 6) {
            Text(title)
                .font(insightTitleFont)
                .foregroundStyle(DS.Colors.textTertiary)

            Text(value)
                .font(insightValueFont)
                .foregroundStyle(.white)
                .lineLimit(2)
        }
        .frame(maxWidth: .infinity, alignment: .leading)
        .padding(.horizontal, 16)
        .padding(.vertical, 14)
        .background(
            RoundedRectangle(cornerRadius: 20, style: .continuous)
                .fill(accent.opacity(0.14))
                .overlay {
                    RoundedRectangle(cornerRadius: 20, style: .continuous)
                        .strokeBorder(accent.opacity(0.20), lineWidth: 1)
                }
        )
    }

    private func detailMetric(label: String, value: String) -> some View {
        VStack(alignment: .leading, spacing: 4) {
            Text(label)
                .font(insightTitleFont)
                .foregroundStyle(DS.Colors.textTertiary)

            Text(value)
                .font(insightValueFont)
                .foregroundStyle(.white)
        }
    }

    private func summaryTag(value: String, systemImage: String) -> some View {
        Label(value, systemImage: systemImage)
            .font(summaryFont)
            .foregroundStyle(.white.opacity(0.92))
            .padding(.horizontal, 14)
            .padding(.vertical, 10)
            .background(
                Capsule()
                    .fill(Color.black.opacity(0.28))
                    .overlay {
                        Capsule()
                            .strokeBorder(Color.white.opacity(0.08), lineWidth: 1)
                    }
            )
    }

    private func metaBadge(_ value: String, tint: Color) -> some View {
        Text(value)
            .font(badgeFont)
            .foregroundStyle(tint)
            .padding(.horizontal, 14)
            .padding(.vertical, 9)
            .background(
                Capsule()
                    .fill(tint.opacity(0.14))
                    .overlay {
                        Capsule()
                            .strokeBorder(tint.opacity(0.22), lineWidth: 1)
                    }
            )
    }

    @ViewBuilder
    private var statusBadge: some View {
        switch game.status {
        case .live(let inning):
            metaBadge(inning?.uppercased() ?? "LIVE", tint: DS.Colors.live)
        case .scheduled(let time):
            metaBadge(time.uppercased(), tint: DS.Colors.warning)
        case .final_:
            metaBadge("FINAL", tint: DS.Colors.positive)
        case .unknown:
            metaBadge("PENDING", tint: DS.Colors.textTertiary)
        }
    }

    @ViewBuilder
    private var heroImage: some View {
        if let url = heroImageURL {
            AsyncImage(url: url) { phase in
                switch phase {
                case .success(let image):
                    image
                        .resizable()
                        .aspectRatio(contentMode: .fill)
                default:
                    fallbackImage
                }
            }
        } else {
            fallbackImage
        }
    }

    private var fallbackImage: some View {
        LinearGradient(
            colors: [
                awayColor.opacity(0.32),
                homeColor.opacity(0.28),
                Color.clear,
            ],
            startPoint: .leading,
            endPoint: .trailing
        )
    }

    private var pitcherMatchupText: String {
        if let awayPitcherName, let homePitcherName {
            return "\(awayPitcherName)\nvs \(homePitcherName)"
        }
        return game.pitchers ?? "Pitchers pending"
    }

    private var pitcherInsightText: String {
        if let awayPitcherName, let homePitcherName {
            return "\(awayPitcherName) vs \(homePitcherName)"
        }
        return game.pitchers ?? "Awaiting starters"
    }

    private func isWinning(away: Bool) -> Bool {
        guard let awayScore = game.awayTeam.score, let homeScore = game.homeTeam.score else {
            return false
        }
        return away ? awayScore > homeScore : homeScore > awayScore
    }

    #if os(tvOS)
    private var heroHeight: CGFloat { 470 }
    private var heroRadius: CGFloat { 34 }
    private var heroPadH: CGFloat { 36 }
    private var heroPadV: CGFloat { 34 }
    private var detailPanelWidth: CGFloat { 360 }
    private var detailPanelPad: CGFloat { 26 }
    private var detailPanelWidthCompact: CGFloat { 320 }
    private var contentSpacing: CGFloat { 26 }
    private var logoSize: CGFloat { 56 }
    private var rowPadH: CGFloat { 22 }
    private var rowPadV: CGFloat { 18 }
    private var titleFont: Font { .system(size: 52, weight: .black, design: .rounded) }
    private var labelFont: Font { .system(size: 15, weight: .black, design: .rounded) }
    private var codeFont: Font { .system(size: 22, weight: .black, design: .rounded) }
    private var nameFont: Font { .system(size: 28, weight: .bold, design: .rounded) }
    private var metadataFont: Font { .system(size: 18, weight: .bold, design: .rounded) }
    private var scoreFont: Font { .system(size: 60, weight: .black, design: .rounded).monospacedDigit() }
    private var badgeFont: Font { .system(size: 13, weight: .black, design: .rounded) }
    private var summaryFont: Font { .system(size: 16, weight: .bold, design: .rounded) }
    private var panelLabelFont: Font { .system(size: 14, weight: .black, design: .rounded) }
    private var panelValueFont: Font { .system(size: 28, weight: .black, design: .rounded) }
    private var panelBodyFont: Font { .system(size: 18, weight: .semibold) }
    private var insightTitleFont: Font { .system(size: 13, weight: .black, design: .rounded) }
    private var insightValueFont: Font { .system(size: 18, weight: .bold, design: .rounded) }
    #else
    private var heroHeight: CGFloat { 340 }
    private var heroRadius: CGFloat { 26 }
    private var heroPadH: CGFloat { 22 }
    private var heroPadV: CGFloat { 22 }
    private var detailPanelWidth: CGFloat { 250 }
    private var detailPanelPad: CGFloat { 18 }
    private var detailPanelWidthCompact: CGFloat { 240 }
    private var contentSpacing: CGFloat { 18 }
    private var logoSize: CGFloat { 36 }
    private var rowPadH: CGFloat { 14 }
    private var rowPadV: CGFloat { 12 }
    private var titleFont: Font { .system(size: 30, weight: .black, design: .rounded) }
    private var labelFont: Font { .system(size: 11, weight: .black, design: .rounded) }
    private var codeFont: Font { .system(size: 15, weight: .black, design: .rounded) }
    private var nameFont: Font { .system(size: 18, weight: .bold, design: .rounded) }
    private var metadataFont: Font { .system(size: 12, weight: .bold, design: .rounded) }
    private var scoreFont: Font { .system(size: 32, weight: .black, design: .rounded).monospacedDigit() }
    private var badgeFont: Font { .system(size: 10, weight: .black, design: .rounded) }
    private var summaryFont: Font { .system(size: 11, weight: .bold, design: .rounded) }
    private var panelLabelFont: Font { .system(size: 10, weight: .black, design: .rounded) }
    private var panelValueFont: Font { .system(size: 18, weight: .black, design: .rounded) }
    private var panelBodyFont: Font { .system(size: 13, weight: .semibold) }
    private var insightTitleFont: Font { .system(size: 10, weight: .black, design: .rounded) }
    private var insightValueFont: Font { .system(size: 12, weight: .bold, design: .rounded) }
    #endif
}