import SwiftUI

struct WorkoutSummaryView: View {
    @ObservedObject var workoutManager: WorkoutManager

    var body: some View {
        if let summary = workoutManager.workoutSummary {
            List {
                Section {
                    VStack(spacing: 8) {
                        Image(systemName: "checkmark.circle.fill")
                            .font(.system(size: 40))
                            .foregroundColor(.green)

                        Text("Workout complete!")
                            .font(.headline)
                            .foregroundColor(.green)
                    }
                    .frame(maxWidth: .infinity)
                    .padding(.vertical, 8)
                }

                Section("Stats") {
                    HStack {
                        Text("Total time")
                            .foregroundColor(.secondary)
                        Spacer()
                        Text(formatTime(summary.duration))
                            .monospacedDigit()
                    }

                    HStack {
                        Text("Distance")
                            .foregroundColor(.secondary)
                        Spacer()
                        Text("\(summary.totalDistance)m")
                            .monospacedDigit()
                    }

                    HStack {
                        Text("Calories")
                            .foregroundColor(.secondary)
                        Spacer()
                        Text("\(summary.calories)kcal")
                            .monospacedDigit()
                    }

                    HStack {
                        Text("Laps")
                            .foregroundColor(.secondary)
                        Spacer()
                        Text("\(summary.laps.count)")
                            .monospacedDigit()
                    }
                }

                Section {
                    Button {
                        workoutManager.dismissSummary()
                    } label: {
                        HStack {
                            Spacer()
                            Text("OK")
                                .font(.headline)
                            Spacer()
                        }
                    }
                    .buttonStyle(.borderedProminent)
                    .tint(.cyan)
                }
            }
            .listStyle(.automatic)
        }
    }

    private func formatTime(_ seconds: TimeInterval) -> String {
        let mins = Int(seconds) / 60
        let secs = Int(seconds) % 60
        return String(format: "%d:%02d", mins, secs)
    }
}