deepvoice_client/lib/modules/goods/controllers/goods_base_controller.dart

import 'package:flutter/material.dart';
import 'package:get/get.dart';
import '../../../routes/app_routes.dart';
import '../../../data/services/pay_service.dart';
import '../../../data/models/goods.dart';
import 'package:flutter_dotenv/flutter_dotenv.dart';
import '../../../data/services/network/dio_manager.dart';

/// goods 模块基础控制器，封装通用的商品加载与支付流程
abstract class GoodsBaseController extends GetxController {
  final RxList<DBGoods> items = <DBGoods>[].obs;
  final RxBool loading = false.obs;
  final RxString error = ''.obs;

  late final PayService _payService = Get.find<PayService>();

  @override
  void onInit() {
    super.onInit();
    _init();
  }

  Future<void> _init() async {
    loading.value = true;
    error.value = '';
    try {
      final list = await fetchProducts();
      items.assignAll(list);
    } catch (e) {
      error.value = e.toString();
    } finally {
      loading.value = false;
    }
  }

  /// 子类实现：返回商品列表（统一使用 DBGoods）
  Future<List<DBGoods>> fetchProducts();

  /// 统一入口：不指定支付方式时，跳转到支付页面交由用户选择
  Future<void> purchase(DBGoods item) async {
    final method = await _showPayMethodSheet();
    if (method == null) return;

    bool ok = false;
    String failMsg = '支付失败，请重试';
    if (method == _PayMethod.wechat) {
      ok = await payWechat(item, onResult: (success, msg) {
        if (!success) failMsg = msg ?? failMsg;
      });
    } else if (method == _PayMethod.alipay) {
      ok = await payAlipay(item, onResult: (success, msg) {
        if (!success) failMsg = msg ?? failMsg;
      });
    } else if (method == _PayMethod.paypal) {
      ok = await payPaypal(item, onResult: (success, msg) {
        if (!success) failMsg = msg ?? failMsg;
      });
    }

    if (!ok) {
      Get.snackbar('提示', failMsg,
          snackPosition: SnackPosition.BOTTOM,
          margin: const EdgeInsets.all(12));
    }
  }

  /// 底部弹窗：选择支付方式
  Future<_PayMethod?> _showPayMethodSheet() async {
    final context = Get.context;
    final isDark =
        context != null && Theme.of(context).brightness == Brightness.dark;
    return await Get.bottomSheet<_PayMethod>(
      SafeArea(
        child: Container(
          decoration: BoxDecoration(
            color: isDark ? Colors.grey[900] : Colors.white,
            borderRadius: const BorderRadius.vertical(top: Radius.circular(16)),
          ),
          child: Column(
            mainAxisSize: MainAxisSize.min,
            children: [
              Padding(
                padding: const EdgeInsets.symmetric(vertical: 12),
                child: Container(
                  width: 40,
                  height: 4,
                  decoration: BoxDecoration(
                    color: isDark ? Colors.white24 : Colors.black12,
                    borderRadius: BorderRadius.circular(2),
                  ),
                ),
              ),
              Padding(
                padding:
                    const EdgeInsets.symmetric(horizontal: 16, vertical: 8),
                child: Column(
                  crossAxisAlignment: CrossAxisAlignment.center,
                  children: [
                    Text(
                      '选择支付方式',
                      style: TextStyle(
                        fontSize: 16,
                        fontWeight: FontWeight.w600,
                        color: isDark ? Colors.white : Colors.black,
                      ),
                    ),
                    const SizedBox(height: 12),
                    Row(
                      mainAxisAlignment: MainAxisAlignment.spaceEvenly,
                      children: [
                        GestureDetector(
                          onTap: () => Get.back(result: _PayMethod.wechat),
                          child: Column(
                            mainAxisSize: MainAxisSize.min,
                            children: [
                              Container(
                                width: 56,
                                height: 56,
                                decoration: BoxDecoration(
                                  shape: BoxShape.circle,
                                  color:
                                      isDark ? Colors.white10 : Colors.black12,
                                  border: Border.all(
                                    color: isDark
                                        ? Colors.white24
                                        : Colors.black12,
                                  ),
                                ),
                                child: Icon(Icons.wechat,
                                    color: Colors.green[600]),
                              ),
                              const SizedBox(height: 8),
                              Text(
                                '微信支付',
                                style: TextStyle(
                                  fontSize: 13,
                                  color: isDark ? Colors.white : Colors.black,
                                ),
                              ),
                            ],
                          ),
                        ),
                        GestureDetector(
                          onTap: () => Get.back(result: _PayMethod.alipay),
                          child: Column(
                            mainAxisSize: MainAxisSize.min,
                            children: [
                              Container(
                                width: 56,
                                height: 56,
                                decoration: BoxDecoration(
                                  shape: BoxShape.circle,
                                  color:
                                      isDark ? Colors.white10 : Colors.black12,
                                  border: Border.all(
                                    color: isDark
                                        ? Colors.white24
                                        : Colors.black12,
                                  ),
                                ),
                                child: Icon(Icons.payment,
                                    color: Colors.blue[600]),
                              ),
                              const SizedBox(height: 8),
                              Text(
                                '支付宝',
                                style: TextStyle(
                                  fontSize: 13,
                                  color: isDark ? Colors.white : Colors.black,
                                ),
                              ),
                            ],
                          ),
                        ),
                        GestureDetector(
                          onTap: () => Get.back(result: _PayMethod.paypal),
                          child: Column(
                            mainAxisSize: MainAxisSize.min,
                            children: [
                              Container(
                                width: 56,
                                height: 56,
                                decoration: BoxDecoration(
                                  shape: BoxShape.circle,
                                  color:
                                      isDark ? Colors.white10 : Colors.black12,
                                  border: Border.all(
                                    color: isDark
                                        ? Colors.white24
                                        : Colors.black12,
                                  ),
                                ),
                                child: Icon(
                                  Icons.account_balance_wallet,
                                  color: Colors.indigo[600],
                                ),
                              ),
                              const SizedBox(height: 8),
                              Text(
                                'PayPal',
                                style: TextStyle(
                                  fontSize: 13,
                                  color: isDark ? Colors.white : Colors.black,
                                ),
                              ),
                            ],
                          ),
                        ),
                      ],
                    ),
                    const SizedBox(height: 12),
                  ],
                ),
              ),
            ],
          ),
        ),
      ),
      isScrollControlled: false,
      ignoreSafeArea: false,
      backgroundColor: Colors.transparent,
    );
  }

  /// 指定微信支付（直接下单并拉起微信）
  Future<bool> payWechat(DBGoods item,
      {PaymentResultCallback? onResult}) async {
    final cents = item.price; // DBGoods.price 单位：分
    final serverUrl = dotenv.env['SERVER_URL'] ?? DioManager().baseUrl;
    final paymentData = await _payService.createWechatPayOrder(
      productId: item.id,
      productName: item.name,
      productDesc: item.desc,
      amount: cents,
      notifyUrl: '$serverUrl/api/home/pay_wechatnotify',
    );
    if (paymentData == null) {
      onResult?.call(false, '创建微信订单失败');
      return false;
    }
    return _payService.wechatPay(paymentData: paymentData, onResult: onResult);
  }

  /// 指定支付宝支付（直接下单并拉起支付宝）
  Future<bool> payAlipay(DBGoods item,
      {PaymentResultCallback? onResult}) async {
    final cents = item.price; // DBGoods.price 单位：分
    final orderInfo = await _payService.createAlipayOrder(
      productId: item.id,
      productName: item.name,
      productDesc: item.desc,
      amount: cents,
      notifyUrl: 'https://api.ideapsound.com/api/home/pay_alipaynotify',
    );
    if (orderInfo == null) {
      onResult?.call(false, '创建支付宝订单失败');
      return false;
    }
    return _payService.alipay(orderInfo: orderInfo, onResult: onResult);
  }

  /// 指定 PayPal 支付（创建订单并打开授权链接）
  Future<bool> payPaypal(DBGoods item,
      {PaymentResultCallback? onResult}) async {
    final cents = item.price; // DBGoods.price 单位：分
    final approvalUrl = await _payService.createPaypalOrder(
      productId: item.id,
      productName: item.name,
      productDesc: item.desc,
      amount: cents,
      notifyUrl: 'https://api.ideapsound.com/api/home/pay_paypalnotify',
    );
    if (approvalUrl == null) {
      onResult?.call(false, '创建 PayPal 订单失败');
      return false;
    }
    return _payService.paypalPay(approvalUrl: approvalUrl, onResult: onResult);
  }
}

enum _PayMethod { wechat, alipay, paypal }