import SwiftUI

struct MacContentView: View {
    @StateObject private var viewModel = MacLibraryViewModel()

    var body: some View {
        VStack(alignment: .leading, spacing: 16) {
            Text("Vorleser (macOS)")
                .font(.title.bold())

            HStack(spacing: 12) {
                Button("Import EPUB") {
                    viewModel.pickEPUB()
                }
                .buttonStyle(.borderedProminent)

                Button("Load Test Text") {
                    viewModel.loadTestText()
                }
                .buttonStyle(.bordered)

                Button("Load Debug Phonemes") {
                    viewModel.loadDebugPhonemes()
                }
                .buttonStyle(.bordered)

                Button("Verify Bundled Assets") {
                    viewModel.updateStatus(AssetVerifier.verify().message)
                }
                .buttonStyle(.bordered)

                Button("Export Last Audio") {
                    viewModel.exportLastAudio()
                }
                .buttonStyle(.bordered)

                Button("Play") {
                    viewModel.playFirstChunk()
                }
                .buttonStyle(.bordered)
            }

            if let url = viewModel.selectedURL {
                Text("Selected: \(url.lastPathComponent)")
                    .font(.callout)
            }

            if !viewModel.statusMessage.isEmpty {
                Text(viewModel.statusMessage)
                    .font(.callout)
                    .foregroundStyle(.secondary)
            }

            Divider()

            if viewModel.chapters.isEmpty {
                Text("No chapters loaded yet.")
                    .foregroundStyle(.secondary)
            } else {
                Picker("Chapter", selection: $viewModel.selectedChapterIndex) {
                    ForEach(Array(viewModel.chapters.enumerated()), id: \.offset) { index, chapter in
                        Text(chapter.title).tag(index)
                    }
                }
                .onChange(of: viewModel.selectedChapterIndex) {
                    viewModel.selectChapter(index: viewModel.selectedChapterIndex)
                }

                List(selection: $viewModel.selectedChunkIndex) {
                    ForEach(Array(viewModel.chunks.enumerated()), id: \.offset) { index, chunk in
                        HStack(alignment: .top, spacing: 12) {
                            VStack(alignment: .leading, spacing: 6) {
                                Text("Chunk \(index + 1)")
                                    .font(.headline)
                                Text(chunk.prefix(240))
                                    .font(.caption)
                                    .foregroundStyle(.secondary)
                            }
                            Spacer()
                            Button("Play") {
                                viewModel.playChunk(at: index)
                            }
                            .buttonStyle(.bordered)
                        }
                        .tag(index)
                    }
                }
                .listStyle(.plain)
            }

            Spacer()
        }
        .padding(20)
        .frame(minWidth: 720, minHeight: 520)
    }
}

#Preview {
    MacContentView()
}