// AudioRoutingPlugin.swift
// Force la sortie audio sur les lunettes Ray-Ban Meta via AVAudioSession.
// Pattern extrait de OpenGlasses (straff2002) WakeWordService.swift + GeminiLiveAudioManager.swift.

import Flutter
import AVFoundation

@objc class AudioRoutingPlugin: NSObject, FlutterPlugin {

    static func register(with registrar: FlutterPluginRegistrar) {
        let channel = FlutterMethodChannel(
            name: "be.unov.mymuseum/audio_routing",
            binaryMessenger: registrar.messenger()
        )
        let instance = AudioRoutingPlugin()
        registrar.addMethodCallDelegate(instance, channel: channel)
    }

    func handle(_ call: FlutterMethodCall, result: @escaping FlutterResult) {
        switch call.method {
        case "enableBluetoothOutput":
            enableBluetoothOutput()
            result(nil)
        case "restoreDefaultOutput":
            restoreDefaultOutput()
            result(nil)
        default:
            result(FlutterMethodNotImplemented)
        }
    }

    private func enableBluetoothOutput() {
        do {
            let session = AVAudioSession.sharedInstance()
            // Mode voiceChat + A2DP + HFP : pattern validé dans OpenGlasses
            // pour jouer audio sur lunettes tout en gardant le micro disponible
            try session.setCategory(
                .playAndRecord,
                mode: .voiceChat,
                options: [.allowBluetoothHFP, .allowBluetoothA2DP, .defaultToSpeaker]
            )
            try session.setActive(true, options: .notifyOthersOnDeactivation)
        } catch {
            print("[AudioRoutingPlugin] enableBluetoothOutput error: \(error)")
        }
    }

    private func restoreDefaultOutput() {
        do {
            let session = AVAudioSession.sharedInstance()
            try session.setCategory(.playback, options: [])
            try session.setActive(true)
        } catch {
            print("[AudioRoutingPlugin] restoreDefaultOutput error: \(error)")
        }
    }
}