import SwiftUI

struct MonthlyCheckInShareCardView: View {
    let summary: MonthlySummary
    let appName: String
    var qrCodeImage: UIImage? = nil

    var body: some View {
        VStack(alignment: .leading, spacing: 14) {
            Text(summary.periodLabel)
                .font(.caption.weight(.semibold))
                .foregroundColor(.white.opacity(0.85))

            Text("Monthly Check-in")
                .font(.title2.weight(.bold))
                .foregroundColor(.white)

            metricRow("Starting", summary.formattedStartingValue)
            metricRow("Ending", summary.formattedEndingValue)
            metricRow("Contributions", summary.formattedContributions)
            metricRow("Net performance", "\(summary.formattedNetPerformance) (\(summary.formattedNetPerformancePercentage))")

            Spacer(minLength: 0)
            shareFooter(appName: appName, qrCodeImage: qrCodeImage)
        }
        .padding(20)
        .frame(width: 320, height: 300)
        .background(LinearGradient.appPrimaryGradient)
        .clipShape(RoundedRectangle(cornerRadius: 24, style: .continuous))
        .overlay(
            RoundedRectangle(cornerRadius: 24, style: .continuous)
                .stroke(Color.white.opacity(0.2), lineWidth: 1)
        )
    }
}

struct PortfolioValueShareCardView: View {
    let totalValue: String
    let changeText: String
    let changeLabel: String
    let yearChange: String?
    let sinceInceptionChange: String?
    let appName: String
    var qrCodeImage: UIImage? = nil

    var body: some View {
        VStack(alignment: .leading, spacing: 14) {
            Text("Portfolio Snapshot")
                .font(.caption.weight(.semibold))
                .foregroundColor(.white.opacity(0.85))

            Text("Total Portfolio Value")
                .font(.headline.weight(.semibold))
                .foregroundColor(.white.opacity(0.9))

            Text(totalValue)
                .font(.system(size: 34, weight: .bold, design: .rounded))
                .foregroundColor(.white)

            Text("\(changeText) \(changeLabel)")
                .font(.subheadline.weight(.semibold))
                .foregroundColor(.white.opacity(0.9))

            if let yearChange {
                metricRow("YoY", yearChange)
            }

            if let sinceInceptionChange {
                metricRow("Since inception", sinceInceptionChange)
            }

            Spacer(minLength: 0)
            shareFooter(appName: appName, qrCodeImage: qrCodeImage)
        }
        .padding(20)
        .frame(width: 320, height: 290)
        .background(
            LinearGradient(
                colors: [Color.appSecondary, Color.appPrimary],
                startPoint: .topLeading,
                endPoint: .bottomTrailing
            )
        )
        .clipShape(RoundedRectangle(cornerRadius: 24, style: .continuous))
        .overlay(
            RoundedRectangle(cornerRadius: 24, style: .continuous)
                .stroke(Color.white.opacity(0.2), lineWidth: 1)
        )
    }
}

private func metricRow(_ title: String, _ value: String) -> some View {
    HStack {
        Text(title)
            .font(.caption.weight(.semibold))
            .foregroundColor(.white.opacity(0.8))
        Spacer()
        Text(value)
            .font(.subheadline.weight(.semibold))
            .foregroundColor(.white)
            .multilineTextAlignment(.trailing)
    }
}

private func shareFooter(appName: String, qrCodeImage: UIImage?) -> some View {
    VStack(spacing: 10) {
        Rectangle()
            .fill(Color.white.opacity(0.2))
            .frame(height: 1)

        HStack(spacing: 12) {
            Image("BrandMark")
                .resizable()
                .aspectRatio(contentMode: .fit)
                .frame(width: 36, height: 36)
                .clipShape(RoundedRectangle(cornerRadius: 8, style: .continuous))

            VStack(alignment: .leading, spacing: 2) {
                Text("Powered by")
                    .font(.caption2.weight(.medium))
                    .foregroundColor(.white.opacity(0.7))
                Text(appName)
                    .font(.subheadline.weight(.bold))
                    .foregroundColor(.white)
            }

            Spacer()

            if let qrCodeImage {
                Image(uiImage: qrCodeImage)
                    .interpolation(.none)
                    .resizable()
                    .frame(width: 48, height: 48)
                    .background(Color.white)
                    .clipShape(RoundedRectangle(cornerRadius: 6, style: .continuous))
            } else {
                Image(systemName: "qrcode")
                    .font(.title3)
                    .foregroundColor(.white.opacity(0.9))
            }
        }
    }
}