import SwiftUI

struct RecordingView: View {
	@Environment(\.modelContext) private var modelContext
	@Environment(\.dismiss) private var dismiss
	@Bindable var viewModel: RecordingViewModel

	var body: some View {
		NavigationStack {
			VStack(spacing: 40) {
				Spacer()

				timerDisplay

				recordButton

				Spacer()

				if let error = viewModel.error {
					Text(error.localizedDescription)
						.font(.caption)
						.foregroundStyle(.red)
						.multilineTextAlignment(.center)
						.padding(.horizontal)
				}
			}
			.padding()
			.navigationTitle(String(localized: "recording.title"))
			.navigationBarTitleDisplayMode(.inline)
			.toolbar {
				ToolbarItem(placement: .cancellationAction) {
					Button(String(localized: "general.done")) {
						if viewModel.isRecording {
							viewModel.stopRecording(context: modelContext)
						}
						dismiss()
					}
				}
			}
		}
	}

	private var timerDisplay: some View {
		Text(viewModel.formattedDuration)
			.font(.system(size: 64, weight: .light, design: .monospaced))
			.foregroundStyle(viewModel.isRecording ? .primary : .secondary)
			.contentTransition(.numericText())
			.animation(.default, value: viewModel.formattedDuration)
			.accessibilityLabel(String(localized: "recording.duration"))
	}

	private var recordButton: some View {
		Button {
			if viewModel.isRecording {
				viewModel.stopRecording(context: modelContext)
			} else {
				viewModel.startRecording()
			}
		} label: {
			ZStack {
				Circle()
					.fill(viewModel.isRecording ? .red : .red.opacity(0.15))
					.frame(width: 88, height: 88)

				if viewModel.isRecording {
					RoundedRectangle(cornerRadius: 6)
						.fill(.white)
						.frame(width: 28, height: 28)
				} else {
					Circle()
						.fill(.red)
						.frame(width: 72, height: 72)
				}
			}
		}
		.accessibilityLabel(
			viewModel.isRecording
				? String(localized: "recording.stop")
				: String(localized: "recording.start")
		)
		.sensoryFeedback(.impact, trigger: viewModel.isRecording)
	}
}

#Preview {
	RecordingView(viewModel: RecordingViewModel())
}