import 'package:flutter/services.dart';

/// 与官方 MobileIMSDK 对齐的生命周期：登录前 init，退出 release。
/// Android 走 MethodChannel；Windows/Linux 无原生插件时回落到 Dart TCP。
class ImBridge {
  static const _ch = MethodChannel('com.fysxkj.oa/im');
  bool nativeReady = false;
  String engine = 'dart-tcp';

  Future<void> init() async {
    try {
      final r = await _ch.invokeMethod<Map>('init');
      nativeReady = r?['ok'] == true || r?['initialized'] == true;
      engine = '${r?['engine'] ?? 'dart-tcp'}';
    } on MissingPluginException {
      nativeReady = false;
      engine = 'dart-tcp';
    } catch (_) {
      nativeReady = false;
      engine = 'dart-tcp';
    }
  }

  Future<void> release() async {
    try {
      await _ch.invokeMethod('release');
    } catch (_) {}
    nativeReady = false;
  }

  Future<String> status() async {
    try {
      final r = await _ch.invokeMethod<String>('engine');
      if (r != null && r.isNotEmpty) engine = r;
    } catch (_) {}
    return engine;
  }
}