// ── Quick Timer Sheet ──────────────────────────────────────────
// Bottom sheet with one-tap preset timers

import SwiftUI

struct QuickTimerSheet: View {
    @EnvironmentObject var store: TimerStore
    @Environment(\.dismiss) private var dismiss

    private let presets: [(String, Int, String, UrgencyLevel)] = [
        ("1 min", 1, "timer", .gentle),
        ("3 min", 3, "timer", .gentle),
        ("5 min", 5, "timer", .gentle),
        ("10 min", 10, "timer", .standard),
        ("15 min", 15, "timer", .standard),
        ("20 min", 20, "timer", .standard),
        ("25 min", 25, "Pomodoro", .standard),
        ("30 min", 30, "timer", .standard),
        ("45 min", 45, "timer", .important),
        ("1 hour", 60, "timer", .important),
        ("90 min", 90, "timer", .important),
        ("2 hours", 120, "timer", .important),
    ]

    let columns = [
        GridItem(.flexible(), spacing: CMSpacing.md),
        GridItem(.flexible(), spacing: CMSpacing.md),
        GridItem(.flexible(), spacing: CMSpacing.md),
    ]

    var body: some View {
        NavigationStack {
            ZStack {
                CMColors.bg.ignoresSafeArea()

                ScrollView {
                    LazyVGrid(columns: columns, spacing: CMSpacing.md) {
                        ForEach(presets, id: \.0) { label, minutes, name, urgency in
                            Button {
                                HapticEngine.tap()
                                let _ = store.addCountdown(CreateCountdownParams(
                                    label: "\(label) \(name)",
                                    durationSeconds: TimeInterval(minutes * 60),
                                    urgency: urgency,
                                    cascade: CascadeConfig(
                                        preset: minutes >= 30 ? .light : .minimal,
                                        intervals: []
                                    )
                                ))
                                dismiss()
                            } label: {
                                VStack(spacing: CMSpacing.xs) {
                                    Text(label)
                                        .font(CMFonts.mono(size: 18, weight: .semibold))
                                        .foregroundStyle(CMColors.text)

                                    // Time reference
                                    if let ref = getTimeReference(minutes: minutes) {
                                        Text(ref.replacingOccurrences(of: "About as long as ", with: ""))
                                            .font(CMFonts.body(size: 10))
                                            .foregroundStyle(CMColors.textMuted)
                                            .lineLimit(1)
                                    }
                                }
                                .frame(maxWidth: .infinity)
                                .padding(.vertical, CMSpacing.lg)
                                .background(CMColors.surface)
                                .clipShape(RoundedRectangle(cornerRadius: CMRadius.md))
                                .overlay(
                                    RoundedRectangle(cornerRadius: CMRadius.md)
                                        .stroke(CMColors.border, lineWidth: 1)
                                )
                            }
                        }
                    }
                    .padding(CMSpacing.lg)
                }
            }
            .navigationTitle("Quick Timer")
            .navigationBarTitleDisplayMode(.inline)
            .toolbar {
                ToolbarItem(placement: .cancellationAction) {
                    Button("Cancel") { dismiss() }
                        .foregroundStyle(CMColors.textSecondary)
                }
            }
            .toolbarBackground(CMColors.surface, for: .navigationBar)
            .toolbarColorScheme(.dark, for: .navigationBar)
        }
        .presentationDetents([.medium, .large])
    }
}