//
//  PlanningModeStep.swift
//  SportsTime
//
//  Step 1 of the trip wizard - select planning mode.
//

import SwiftUI

struct PlanningModeStep: View {
    @Environment(\.colorScheme) private var colorScheme
    @Binding var selection: PlanningMode?

    var body: some View {
        VStack(alignment: .leading, spacing: Theme.Spacing.md) {
            StepHeader(
                title: "How do you want to plan?",
                subtitle: "Choose your starting point"
            )

            VStack(spacing: Theme.Spacing.sm) {
                ForEach(PlanningMode.allCases) { mode in
                    PlanningModeCard(
                        mode: mode,
                        isSelected: selection == mode,
                        onTap: { selection = mode }
                    )
                }
            }
        }
        .padding(Theme.Spacing.lg)
        .background(Theme.cardBackground(colorScheme))
        .clipShape(RoundedRectangle(cornerRadius: Theme.CornerRadius.large))
        .overlay {
            RoundedRectangle(cornerRadius: Theme.CornerRadius.large)
                .stroke(Theme.surfaceGlow(colorScheme), lineWidth: 1)
        }
    }
}

// MARK: - Planning Mode Card

private struct PlanningModeCard: View {
    @Environment(\.colorScheme) private var colorScheme
    let mode: PlanningMode
    let isSelected: Bool
    let onTap: () -> Void

    var body: some View {
        Button(action: onTap) {
            HStack(spacing: Theme.Spacing.md) {
                Image(systemName: mode.iconName)
                    .font(.title2)
                    .foregroundStyle(isSelected ? Theme.warmOrange : Theme.textSecondary(colorScheme))
                    .frame(width: 32)

                VStack(alignment: .leading, spacing: 2) {
                    Text(mode.displayName)
                        .font(.headline)
                        .foregroundStyle(Theme.textPrimary(colorScheme))

                    Text(mode.description)
                        .font(.caption)
                        .foregroundStyle(Theme.textMuted(colorScheme))
                }

                Spacer()

                if isSelected {
                    Image(systemName: "checkmark.circle.fill")
                        .foregroundStyle(Theme.warmOrange)
                }
            }
            .padding(Theme.Spacing.md)
            .background(isSelected ? Theme.warmOrange.opacity(0.1) : Color.clear)
            .clipShape(RoundedRectangle(cornerRadius: Theme.CornerRadius.medium))
            .overlay(
                RoundedRectangle(cornerRadius: Theme.CornerRadius.medium)
                    .stroke(isSelected ? Theme.warmOrange : Theme.textMuted(colorScheme).opacity(0.3), lineWidth: isSelected ? 2 : 1)
            )
        }
        .buttonStyle(.plain)
    }
}

// MARK: - Step Header (Reusable)

struct StepHeader: View {
    @Environment(\.colorScheme) private var colorScheme
    let title: String
    var subtitle: String? = nil

    var body: some View {
        VStack(alignment: .leading, spacing: 4) {
            Text(title)
                .font(.title3)
                .fontWeight(.semibold)
                .foregroundStyle(Theme.textPrimary(colorScheme))

            if let subtitle {
                Text(subtitle)
                    .font(.subheadline)
                    .foregroundStyle(Theme.textSecondary(colorScheme))
            }
        }
    }
}

// MARK: - Preview

#Preview {
    PlanningModeStep(selection: .constant(.dateRange))
        .padding()
        .themedBackground()
}