feat(c2c): 修改C2C交易为积分值并添加绿积分支付方式

- C2C交易的商品从积分股改为积分值
- 添加绿积分作为默认且不可取消的支付方式
- 添加1.0系统ID输入框（绿积分支付必填）
- 支持多种支付方式同时选择
- 更新交易提示说明

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

frontend/mining-app/lib/data/datasources/remote/trading_remote_datasource.dart

@@ -102,6 +102,7 @@ abstract class TradingRemoteDataSource {
     String? paymentAccount,
     String? paymentQrCode,
     String? paymentRealName,
+    String? systemId, // 1.0系统ID（绿积分支付必填）
     String? remark,
   });
 
@@ -444,6 +445,7 @@ class TradingRemoteDataSourceImpl implements TradingRemoteDataSource {
     String? paymentAccount,
     String? paymentQrCode,
     String? paymentRealName,
+    String? systemId, // 1.0系统ID（绿积分支付必填）
     String? remark,
   }) async {
     try {
@@ -459,6 +461,7 @@ class TradingRemoteDataSourceImpl implements TradingRemoteDataSource {
       if (paymentAccount != null) data['paymentAccount'] = paymentAccount;
       if (paymentQrCode != null) data['paymentQrCode'] = paymentQrCode;
       if (paymentRealName != null) data['paymentRealName'] = paymentRealName;
+      if (systemId != null && systemId.isNotEmpty) data['systemId'] = systemId;
       if (remark != null && remark.isNotEmpty) data['remark'] = remark;
 
       final response = await client.post(

frontend/mining-app/lib/presentation/pages/c2c/c2c_publish_page.dart

@@ -29,9 +29,10 @@ class _C2cPublishPageState extends ConsumerState<C2cPublishPage> {
   final _remarkController = TextEditingController();
 
   // 收款信息（卖单必填）
-  String _paymentMethod = 'ALIPAY'; // ALIPAY, WECHAT, BANK
+  Set<String> _selectedPaymentMethods = {'GREEN_POINTS'}; // 绿积分默认选中且不可取消
   final _paymentAccountController = TextEditingController();
   final _paymentRealNameController = TextEditingController();
+  final _systemIdController = TextEditingController(); // 1.0系统ID
 
   @override
   void dispose() {
@@ -40,6 +41,7 @@ class _C2cPublishPageState extends ConsumerState<C2cPublishPage> {
     _remarkController.dispose();
     _paymentAccountController.dispose();
     _paymentRealNameController.dispose();
+    _systemIdController.dispose();
     super.dispose();
   }
 
@@ -194,8 +196,8 @@ class _C2cPublishPageState extends ConsumerState<C2cPublishPage> {
   }
 
   Widget _buildBalanceCard(String availableShares, String availableCash) {
-    final isBuy = _selectedType == 0;
-
+    // C2C交易的是积分值，买入广告需要买家有绿积分（积分值）来支付
+    // 卖出广告需要卖家有积分值来出售
     return Container(
       margin: const EdgeInsets.symmetric(horizontal: 16),
       padding: const EdgeInsets.all(16),
@@ -206,16 +208,16 @@ class _C2cPublishPageState extends ConsumerState<C2cPublishPage> {
       child: Row(
         mainAxisAlignment: MainAxisAlignment.spaceBetween,
         children: [
-          Text(
-            isBuy ? '可用积分值' : '可用积分股',
-            style: const TextStyle(fontSize: 14, color: _grayText),
+          const Text(
+            '可用积分值',
+            style: TextStyle(fontSize: 14, color: _grayText),
           ),
           Text(
-            isBuy ? formatAmount(availableCash) : formatAmount(availableShares),
-            style: TextStyle(
+            formatAmount(availableCash),
+            style: const TextStyle(
               fontSize: 16,
               fontWeight: FontWeight.bold,
-              color: isBuy ? _green : _orange,
+              color: _green,
             ),
           ),
         ],
@@ -271,7 +273,7 @@ class _C2cPublishPageState extends ConsumerState<C2cPublishPage> {
                 borderRadius: BorderRadius.circular(12),
                 borderSide: const BorderSide(color: _orange, width: 2),
               ),
-              suffixText: '积分值/股',
+              suffixText: '元/积分值',
               suffixStyle: const TextStyle(color: _grayText, fontSize: 14),
             ),
             onChanged: (_) => setState(() {}),
@@ -286,8 +288,7 @@ class _C2cPublishPageState extends ConsumerState<C2cPublishPage> {
     String availableCash,
     String currentPrice,
   ) {
-    final isBuy = _selectedType == 0;
-
+    // C2C交易的是积分值
     return Container(
       margin: const EdgeInsets.symmetric(horizontal: 16),
       padding: const EdgeInsets.all(20),
@@ -314,7 +315,7 @@ class _C2cPublishPageState extends ConsumerState<C2cPublishPage> {
               FilteringTextInputFormatter.allow(RegExp(r'^\d+\.?\d{0,4}')),
             ],
             decoration: InputDecoration(
-              hintText: '请输入数量',
+              hintText: '请输入积分值数量',
               hintStyle: const TextStyle(color: _grayText),
               filled: true,
               fillColor: _bgGray,
@@ -328,17 +329,8 @@ class _C2cPublishPageState extends ConsumerState<C2cPublishPage> {
               ),
               suffixIcon: TextButton(
                 onPressed: () {
-                  if (isBuy) {
-                    // 买入：根据可用积分值计算可买数量
-                    final price = double.tryParse(_priceController.text) ?? 0;
-                    final cash = double.tryParse(availableCash) ?? 0;
-                    if (price > 0) {
-                      _quantityController.text = (cash / price).toStringAsFixed(4);
-                    }
-                  } else {
-                    // 卖出：填入全部可用积分股
-                    _quantityController.text = availableShares;
-                  }
+                  // 填入全部可用积分值
+                  _quantityController.text = availableCash;
                   setState(() {});
                 },
                 child: const Text(
@@ -349,7 +341,7 @@ class _C2cPublishPageState extends ConsumerState<C2cPublishPage> {
                   ),
                 ),
               ),
-              suffixText: '积分股',
+              suffixText: '积分值',
               suffixStyle: const TextStyle(color: _grayText, fontSize: 14),
             ),
             onChanged: (_) => setState(() {}),
@@ -389,33 +381,40 @@ class _C2cPublishPageState extends ConsumerState<C2cPublishPage> {
           ),
           const SizedBox(height: 16),
 
-          // 收款方式选择
+          // 收款方式选择（多选）
           const Text(
-            '收款方式',
+            '收款方式（可多选）',
             style: TextStyle(fontSize: 14, color: _grayText),
           ),
           const SizedBox(height: 8),
-          Row(
+          Wrap(
+            spacing: 12,
+            runSpacing: 8,
             children: [
-              _buildPaymentMethodChip('ALIPAY', '支付宝', Icons.account_balance_wallet),
-              const SizedBox(width: 12),
-              _buildPaymentMethodChip('WECHAT', '微信', Icons.chat_bubble),
-              const SizedBox(width: 12),
-              _buildPaymentMethodChip('BANK', '银行卡', Icons.credit_card),
+              // 绿积分 - 默认选中且不可取消
+              _buildPaymentMethodCheckbox('GREEN_POINTS', '绿积分', Icons.eco, isLocked: true),
+              _buildPaymentMethodCheckbox('ALIPAY', '支付宝', Icons.account_balance_wallet),
+              _buildPaymentMethodCheckbox('WECHAT', '微信', Icons.chat_bubble),
+              _buildPaymentMethodCheckbox('BANK', '银行卡', Icons.credit_card),
             ],
           ),
           const SizedBox(height: 16),
 
-          // 收款账号
+          // 1.0系统ID（绿积分必填）
           const Text(
-            '收款账号',
+            '1.0系统ID',
             style: TextStyle(fontSize: 14, color: _grayText),
           ),
+          const SizedBox(height: 4),
+          const Text(
+            '买家将通过此ID向您转账绿积分',
+            style: TextStyle(fontSize: 12, color: _grayText),
+          ),
           const SizedBox(height: 8),
           TextField(
-            controller: _paymentAccountController,
+            controller: _systemIdController,
             decoration: InputDecoration(
-              hintText: _paymentMethod == 'BANK' ? '请输入银行卡号' : '请输入收款账号',
+              hintText: '请输入您的1.0系统ID',
               hintStyle: const TextStyle(color: _grayText),
               filled: true,
               fillColor: _bgGray,
@@ -429,47 +428,75 @@ class _C2cPublishPageState extends ConsumerState<C2cPublishPage> {
               ),
             ),
           ),
-          const SizedBox(height: 16),
 
-          // 收款人实名
-          const Text(
-            '收款人姓名',
-            style: TextStyle(fontSize: 14, color: _grayText),
-          ),
-          const SizedBox(height: 8),
-          TextField(
-            controller: _paymentRealNameController,
-            decoration: InputDecoration(
-              hintText: '请输入收款人真实姓名',
-              hintStyle: const TextStyle(color: _grayText),
-              filled: true,
-              fillColor: _bgGray,
-              border: OutlineInputBorder(
-                borderRadius: BorderRadius.circular(12),
-                borderSide: BorderSide.none,
-              ),
-              focusedBorder: OutlineInputBorder(
-                borderRadius: BorderRadius.circular(12),
-                borderSide: const BorderSide(color: _orange, width: 2),
+          // 只有选择了非绿积分支付方式才显示收款账号和姓名
+          if (_selectedPaymentMethods.any((m) => m != 'GREEN_POINTS')) ...[
+            const SizedBox(height: 16),
+            // 收款账号
+            const Text(
+              '收款账号（其他支付方式）',
+              style: TextStyle(fontSize: 14, color: _grayText),
+            ),
+            const SizedBox(height: 8),
+            TextField(
+              controller: _paymentAccountController,
+              decoration: InputDecoration(
+                hintText: '请输入收款账号',
+                hintStyle: const TextStyle(color: _grayText),
+                filled: true,
+                fillColor: _bgGray,
+                border: OutlineInputBorder(
+                  borderRadius: BorderRadius.circular(12),
+                  borderSide: BorderSide.none,
+                ),
+                focusedBorder: OutlineInputBorder(
+                  borderRadius: BorderRadius.circular(12),
+                  borderSide: const BorderSide(color: _orange, width: 2),
+                ),
               ),
             ),
-          ),
+            const SizedBox(height: 16),
+
+            // 收款人实名
+            const Text(
+              '收款人姓名',
+              style: TextStyle(fontSize: 14, color: _grayText),
+            ),
+            const SizedBox(height: 8),
+            TextField(
+              controller: _paymentRealNameController,
+              decoration: InputDecoration(
+                hintText: '请输入收款人真实姓名',
+                hintStyle: const TextStyle(color: _grayText),
+                filled: true,
+                fillColor: _bgGray,
+                border: OutlineInputBorder(
+                  borderRadius: BorderRadius.circular(12),
+                  borderSide: BorderSide.none,
+                ),
+                focusedBorder: OutlineInputBorder(
+                  borderRadius: BorderRadius.circular(12),
+                  borderSide: const BorderSide(color: _orange, width: 2),
+                ),
+              ),
+            ),
+          ],
 
           const SizedBox(height: 12),
           Container(
             padding: const EdgeInsets.all(12),
             decoration: BoxDecoration(
-              color: _orange.withOpacity(0.1),
+              color: _green.withOpacity(0.1),
               borderRadius: BorderRadius.circular(8),
             ),
             child: Row(
               children: const [
-                Icon(Icons.info_outline, size: 16, color: _orange),
+                Icon(Icons.eco, size: 16, color: _green),
                 SizedBox(width: 8),
                 Expanded(
                   child: Text(
-                    '买家会根据您填写的收款信息进行付款，请确保信息准确',
-                    style: TextStyle(fontSize: 12, color: _orange),
+                    '绿积分支付：买家将在1.0系统中向您的ID转账绿积分',
+                    style: TextStyle(fontSize: 12, color: _green),
                   ),
                 ),
               ],
@@ -480,14 +507,22 @@ class _C2cPublishPageState extends ConsumerState<C2cPublishPage> {
     );
   }
 
-  Widget _buildPaymentMethodChip(String value, String label, IconData icon) {
-    final isSelected = _paymentMethod == value;
+  Widget _buildPaymentMethodCheckbox(String value, String label, IconData icon, {bool isLocked = false}) {
+    final isSelected = _selectedPaymentMethods.contains(value);
     return GestureDetector(
-      onTap: () => setState(() => _paymentMethod = value),
+      onTap: isLocked ? null : () {
+        setState(() {
+          if (isSelected) {
+            _selectedPaymentMethods.remove(value);
+          } else {
+            _selectedPaymentMethods.add(value);
+          }
+        });
+      },
       child: Container(
-        padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 10),
+        padding: const EdgeInsets.symmetric(horizontal: 12, vertical: 8),
         decoration: BoxDecoration(
-          color: isSelected ? _orange : _bgGray,
+          color: isSelected ? (value == 'GREEN_POINTS' ? _green : _orange) : _bgGray,
           borderRadius: BorderRadius.circular(8),
           border: isSelected ? null : Border.all(color: Colors.grey.shade300),
         ),
@@ -495,11 +530,17 @@ class _C2cPublishPageState extends ConsumerState<C2cPublishPage> {
           mainAxisSize: MainAxisSize.min,
           children: [
             Icon(
-              icon,
+              isSelected ? Icons.check_circle : Icons.circle_outlined,
               size: 18,
               color: isSelected ? Colors.white : _grayText,
             ),
             const SizedBox(width: 6),
+            Icon(
+              icon,
+              size: 16,
+              color: isSelected ? Colors.white : _grayText,
+            ),
+            const SizedBox(width: 4),
             Text(
               label,
               style: TextStyle(
@@ -508,6 +549,14 @@ class _C2cPublishPageState extends ConsumerState<C2cPublishPage> {
                 fontWeight: isSelected ? FontWeight.bold : FontWeight.normal,
               ),
             ),
+            if (isLocked) ...[
+              const SizedBox(width: 4),
+              Icon(
+                Icons.lock,
+                size: 12,
+                color: isSelected ? Colors.white70 : _grayText,
+              ),
+            ],
           ],
         ),
       ),
@@ -580,7 +629,7 @@ class _C2cPublishPageState extends ConsumerState<C2cPublishPage> {
             children: [
               const Text('交易总额', style: TextStyle(fontSize: 14, color: _grayText)),
               Text(
-                '${formatAmount(total.toString())} 积分值',
+                '￥${formatAmount(total.toString())}',
                 style: const TextStyle(
                   fontSize: 18,
                   fontWeight: FontWeight.bold,
@@ -590,12 +639,27 @@ class _C2cPublishPageState extends ConsumerState<C2cPublishPage> {
             ],
           ),
           const SizedBox(height: 8),
+          Row(
+            mainAxisAlignment: MainAxisAlignment.spaceBetween,
+            children: [
+              const Text('积分值数量', style: TextStyle(fontSize: 14, color: _grayText)),
+              Text(
+                '${formatAmount(quantity.toString())} 积分值',
+                style: const TextStyle(
+                  fontSize: 14,
+                  fontWeight: FontWeight.bold,
+                  color: _green,
+                ),
+              ),
+            ],
+          ),
+          const SizedBox(height: 8),
           Divider(color: _orange.withOpacity(0.2)),
           const SizedBox(height: 8),
           Text(
             isBuy
-                ? '发布后，其他用户可以接单卖出积分股给您'
-                : '发布后，其他用户可以接单用积分值购买您的积分股',
+                ? '发布后，其他用户可以接单卖出积分值给您'
+                : '发布后，其他用户可以接单购买您的积分值',
             style: const TextStyle(fontSize: 12, color: _grayText),
           ),
         ],
@@ -608,12 +672,17 @@ class _C2cPublishPageState extends ConsumerState<C2cPublishPage> {
     final quantity = double.tryParse(_quantityController.text) ?? 0;
     final isSell = _selectedType == 1;
 
-    // 卖单需要验证收款信息
+    // 验证条件
     bool isValid = price > 0 && quantity > 0;
     if (isSell) {
-      isValid = isValid &&
-          _paymentAccountController.text.trim().isNotEmpty &&
-          _paymentRealNameController.text.trim().isNotEmpty;
+      // 卖单必须填写1.0系统ID（因为绿积分是必选的）
+      isValid = isValid && _systemIdController.text.trim().isNotEmpty;
+      // 如果选择了其他支付方式，还需要填写收款账号和姓名
+      if (_selectedPaymentMethods.any((m) => m != 'GREEN_POINTS')) {
+        isValid = isValid &&
+            _paymentAccountController.text.trim().isNotEmpty &&
+            _paymentRealNameController.text.trim().isNotEmpty;
+      }
     }
 
     return Padding(
@@ -680,10 +749,11 @@ class _C2cPublishPageState extends ConsumerState<C2cPublishPage> {
           ),
           const SizedBox(height: 8),
           const Text(
-            '1. 发布广告后，您的资产将被冻结直到交易完成或取消\n'
+            '1. 发布广告后，您的积分值将被冻结直到交易完成或取消\n'
             '2. 其他用户接单后，需在规定时间内完成交易\n'
-            '3. 买方需先转账积分值，卖方确认收款后积分股自动划转\n'
-            '4. 如遇问题，请联系客服处理',
+            '3. 买方需在1.0系统中向卖方转账绿积分\n'
+            '4. 卖方确认收到绿积分后，积分值自动划转给买方\n'
+            '5. 如遇问题，请联系客服处理',
             style: TextStyle(
               fontSize: 12,
               color: _grayText,
@@ -704,25 +774,40 @@ class _C2cPublishPageState extends ConsumerState<C2cPublishPage> {
 
     // 卖单验证收款信息
     if (isSell) {
-      if (_paymentAccountController.text.trim().isEmpty) {
+      // 必须填写1.0系统ID（绿积分是必选的）
+      if (_systemIdController.text.trim().isEmpty) {
         ScaffoldMessenger.of(context).showSnackBar(
-          const SnackBar(content: Text('请填写收款账号'), backgroundColor: _red),
+          const SnackBar(content: Text('请填写1.0系统ID'), backgroundColor: _red),
         );
         return;
       }
-      if (_paymentRealNameController.text.trim().isEmpty) {
-        ScaffoldMessenger.of(context).showSnackBar(
-          const SnackBar(content: Text('请填写收款人姓名'), backgroundColor: _red),
-        );
-        return;
+      // 如果选择了其他支付方式，需要填写收款账号和姓名
+      if (_selectedPaymentMethods.any((m) => m != 'GREEN_POINTS')) {
+        if (_paymentAccountController.text.trim().isEmpty) {
+          ScaffoldMessenger.of(context).showSnackBar(
+            const SnackBar(content: Text('请填写收款账号'), backgroundColor: _red),
+          );
+          return;
+        }
+        if (_paymentRealNameController.text.trim().isEmpty) {
+          ScaffoldMessenger.of(context).showSnackBar(
+            const SnackBar(content: Text('请填写收款人姓名'), backgroundColor: _red),
+          );
+          return;
+        }
       }
     }
 
-    final paymentMethodText = _paymentMethod == 'ALIPAY'
-        ? '支付宝'
-        : _paymentMethod == 'WECHAT'
-            ? '微信'
-            : '银行卡';
+    // 构建支付方式显示文本
+    final paymentMethodTexts = _selectedPaymentMethods.map((m) {
+      switch (m) {
+        case 'GREEN_POINTS': return '绿积分';
+        case 'ALIPAY': return '支付宝';
+        case 'WECHAT': return '微信';
+        case 'BANK': return '银行卡';
+        default: return m;
+      }
+    }).join('、');
 
     // 确认对话框
     final confirmed = await showDialog<bool>(
@@ -733,29 +818,31 @@ class _C2cPublishPageState extends ConsumerState<C2cPublishPage> {
           mainAxisSize: MainAxisSize.min,
           crossAxisAlignment: CrossAxisAlignment.start,
           children: [
-            Text('单价: $price 积分值/股'),
+            Text('单价: ￥$price/积分值'),
             const SizedBox(height: 8),
-            Text('数量: $quantity 积分股'),
+            Text('数量: $quantity 积分值'),
             const SizedBox(height: 8),
             Text(
-              '总额: ${formatAmount((double.parse(price) * double.parse(quantity)).toString())} 积分值',
+              '总额: ￥${formatAmount((double.parse(price) * double.parse(quantity)).toString())}',
               style: const TextStyle(fontWeight: FontWeight.bold),
             ),
             if (isSell) ...[
               const SizedBox(height: 16),
               const Divider(),
               const SizedBox(height: 8),
-              Text('收款方式: $paymentMethodText'),
+              Text('收款方式: $paymentMethodTexts'),
               const SizedBox(height: 4),
-              Text('收款账号: ${_paymentAccountController.text.trim()}'),
-              const SizedBox(height: 4),
-              Text('收款人: ${_paymentRealNameController.text.trim()}'),
+              Text('1.0系统ID: ${_systemIdController.text.trim()}'),
+              if (_selectedPaymentMethods.any((m) => m != 'GREEN_POINTS')) ...[
+                const SizedBox(height: 4),
+                Text('收款账号: ${_paymentAccountController.text.trim()}'),
+                const SizedBox(height: 4),
+                Text('收款人: ${_paymentRealNameController.text.trim()}'),
+              ],
             ],
             const SizedBox(height: 16),
-            Text(
-              _selectedType == 0
-                  ? '发布后，您的积分值将被冻结'
-                  : '发布后，您的积分股将被冻结',
+            const Text(
+              '发布后，您的积分值将被冻结',
               style: TextStyle(fontSize: 12, color: _grayText),
             ),
           ],
@@ -784,9 +871,10 @@ class _C2cPublishPageState extends ConsumerState<C2cPublishPage> {
       price: price,
       quantity: quantity,
       // 收款信息（卖单时传递）
-      paymentMethod: isSell ? _paymentMethod : null,
+      paymentMethod: isSell ? _selectedPaymentMethods.join(',') : null,
       paymentAccount: isSell ? _paymentAccountController.text.trim() : null,
       paymentRealName: isSell ? _paymentRealNameController.text.trim() : null,
+      systemId: isSell ? _systemIdController.text.trim() : null,
       remark: remark.isEmpty ? null : remark,
     );
 

frontend/mining-app/lib/presentation/providers/c2c_providers.dart

@@ -87,6 +87,7 @@ class C2cTradingNotifier extends StateNotifier<C2cTradingState> {
     String? paymentAccount,
     String? paymentQrCode,
     String? paymentRealName,
+    String? systemId, // 1.0系统ID（绿积分支付必填）
     String? remark,
   }) async {
     state = state.copyWith(isLoading: true, clearError: true);
@@ -101,6 +102,7 @@ class C2cTradingNotifier extends StateNotifier<C2cTradingState> {
         paymentAccount: paymentAccount,
         paymentQrCode: paymentQrCode,
         paymentRealName: paymentRealName,
+        systemId: systemId,
         remark: remark,
       );
       state = state.copyWith(isLoading: false, lastOrder: order);