import SwiftUI
import VoiceCatCore

struct SettingsView: View {
    @Environment(AppState.self) private var appState
    @Bindable var session: SessionState

    var body: some View {
        NavigationStack {
            Form {
                // Voice input section
                Section("Voice Input") {
                    Picker("Input Mode", selection: Binding(
                        get: { session.voiceState.inputMode },
                        set: { session.setInputMode($0) }
                    )) {
                        Text("Voice Activation").tag(VoiceCatInputMode.voiceActivation)
                        Text("Push to Talk").tag(VoiceCatInputMode.pushToTalk)
                        Text("Always On").tag(VoiceCatInputMode.alwaysOn)
                    }
                    .accessibilityLabel("Voice input mode")

                    if session.voiceState.inputMode == .voiceActivation {
                        VStack(alignment: .leading, spacing: 4) {
                            Text("VAD Threshold: \(String(format: "%.3f", session.voiceState.vadThreshold))")
                                .font(.caption)
                            Slider(
                                value: Binding(
                                    get: { Double(session.voiceState.vadThreshold) },
                                    set: { session.setVadThreshold(Float($0)) }
                                ),
                                in: 0.001...0.1, step: 0.001
                            )
                            .accessibilityLabel("Voice activation threshold")
                        }
                    }
                }

                // Audio device section
                if !session.devices.isEmpty {
                    Section("Input Device") {
                        Picker("Microphone", selection: Binding(
                            get: { session.voiceState.currentDeviceId ?? "" },
                            set: { id in
                                session.voiceState.currentDeviceId = id.isEmpty ? nil : id
                                if session.voiceState.localStreamId != 0 {
                                    session.client.setInputDevice(
                                        streamId: session.voiceState.localStreamId,
                                        deviceId: id.isEmpty ? nil : id)
                                }
                            }
                        )) {
                            Text("Default").tag("")
                            ForEach(session.devices) { dev in
                                Text(dev.name).tag(dev.id)
                            }
                        }
                        .accessibilityLabel("Microphone selection")
                    }
                }

                // Admin section
                if session.permissions.canAdminAccounts || session.permissions.isAdmin {
                    Section("Administration") {
                        NavigationLink("Manage Accounts") {
                            AccountsView(session: session)
                        }
                        .accessibilityLabel("Manage server accounts")
                    }
                }

                // Server info
                Section("Server") {
                    Button(role: .destructive) {
                        session.stopMicStream()
                        appState.disconnect()
                    } label: {
                        Label("Disconnect", systemImage: "phone.down")
                            .foregroundStyle(.red)
                    }
                    .accessibilityLabel("Disconnect from server")
                }

                Section("About") {
                    Text(VoiceCatClient.versionString)
                        .font(.caption)
                        .foregroundStyle(.secondary)
                        .accessibilityLabel("Version: \(VoiceCatClient.versionString)")
                }
            }
            .navigationTitle("Settings")
        }
    }
}