//
//  BleStatusView.swift
//  iris
//
//  Created by Codex.
//

import SwiftUI

struct BleStatusView: View {
    @EnvironmentObject private var ble: BlePeripheralManager
    @EnvironmentObject private var orchestrator: ContextOrchestrator

    var body: some View {
        VStack(alignment: .leading, spacing: 16) {
            VStack(alignment: .leading, spacing: 6) {
                Text("GlassNow BLE")
                    .font(.title2.bold())
                Text("Bluetooth: \(bluetoothStateText)")
                    .font(.subheadline)
                    .foregroundStyle(.secondary)
            }

            Toggle(isOn: $ble.advertisingEnabled) {
                VStack(alignment: .leading, spacing: 2) {
                    Text("Advertising")
                        .font(.headline)
                    Text(ble.isAdvertising ? "On" : "Off")
                        .font(.subheadline)
                        .foregroundStyle(.secondary)
                }
            }
            .onChange(of: ble.advertisingEnabled) { _ in
                ble.start()
            }

            VStack(alignment: .leading, spacing: 8) {
                Text("Connection")
                    .font(.headline)
                Text("Subscribed: \(ble.isSubscribed ? "Yes" : "No")")
                    .font(.subheadline)
                Text("Subscribers: \(ble.subscribedCount)")
                    .font(.subheadline)
                    .foregroundStyle(.secondary)
            }

            VStack(alignment: .leading, spacing: 8) {
                Text("Telemetry")
                    .font(.headline)
                Text("Last msgId: \(ble.lastMsgIdSent)")
                    .font(.subheadline)
                Text("Last ping: \(ble.lastPingAt.map { timeOnly(from: $0) } ?? "Never")")
                    .font(.subheadline)
                Text("Last data: \(ble.lastDataAt.map { timeOnly(from: $0) } ?? "Never")")
                    .font(.subheadline)
                Text("Notify queue: \(ble.notifyQueueDepth)")
                    .font(.subheadline)
                    .foregroundStyle(.secondary)
                if ble.droppedNotifyPackets > 0 {
                    Text("Dropped notify packets: \(ble.droppedNotifyPackets)")
                        .font(.subheadline)
                        .foregroundStyle(.secondary)
                }
                Text("Last notify: \(ble.lastNotifyAt.map { timeOnly(from: $0) } ?? "Never")")
                    .font(.subheadline)
                    .foregroundStyle(.secondary)
                if let cmd = ble.lastCommand, !cmd.isEmpty {
                    Text("Last control: \(cmd)")
                        .font(.subheadline)
                        .foregroundStyle(.secondary)
                }
            }

            VStack(alignment: .leading, spacing: 12) {
                Button("Send Fixture Feed Now") {
                    orchestrator.sendFixtureFeedNow()
                }
                .buttonStyle(.borderedProminent)

                Button("Copy UUIDs") {
                    ble.copyUUIDsToPasteboard()
                }
                .buttonStyle(.bordered)
            }

            VStack(alignment: .leading, spacing: 8) {
                Text("UUIDs")
                    .font(.headline)
                Text("Service: \(BlePeripheralManager.serviceUUID.uuidString)\nFEED_TX: \(BlePeripheralManager.feedTxUUID.uuidString)\nCONTROL_RX: \(BlePeripheralManager.controlRxUUID.uuidString)")
                    .font(.caption)
                    .textSelection(.enabled)
            }
        }
        .padding(.vertical, 16)
        .padding(.horizontal, 24)
        .frame(maxWidth: .infinity, maxHeight: .infinity, alignment: .topLeading)
        .onAppear { ble.start() }
    }

    private var bluetoothStateText: String {
        switch ble.bluetoothState {
        case .unknown: return "Unknown"
        case .resetting: return "Resetting"
        case .unsupported: return "Unsupported"
        case .unauthorized: return "Unauthorized"
        case .poweredOff: return "Powered Off"
        case .poweredOn: return "Powered On"
        @unknown default: return "Other"
        }
    }

    private func timeOnly(from date: Date) -> String {
        let formatter = DateFormatter()
        formatter.dateStyle = .none
        formatter.timeStyle = .medium
        return formatter.string(from: date)
    }
}

struct BleStatusView_Previews: PreviewProvider {
    static var previews: some View {
        Text("Preview unavailable (requires EnvironmentObjects).")
    }
}