feat: 初始化 Wails + React + Go 桌面应用模板

- Wails v2.16.0 + React 19 + TypeScript + Vite 7
- 插件系统（build tag 控制编译，plugin.json 运行时配置）
- 支付插件（授权、账号、订单、退款、账单）
- 高并发基础设施（任务池、批量处理器、限流器、环形缓冲、管道）
- Windows 系统托盘（Win32 API）
- CodeGraph 索引 + .memory 记忆包
- 默认图标 assets/icon.png

internal/payment/service.go

@@ -0,0 +1,149 @@
+package payment
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+)
+
+// Service 支付业务层，内部封装 Client，对外暴露方法
+type Service struct {
+	client *Client
+	cfg    Config
+}
+
+// NewService 创建支付服务
+func NewService(cfg Config) *Service {
+	return &Service{
+		client: NewClient(cfg),
+		cfg:    cfg,
+	}
+}
+
+// GetClient 获取底层 HTTP 客户端（供高级用法）
+func (s *Service) GetClient() *Client {
+	return s.client
+}
+
+// Login 登录授权，获取 access_token
+func (s *Service) Login(ctx context.Context) (map[string]any, error) {
+	token, err := s.client.GetToken(ctx)
+	if err != nil {
+		return nil, err
+	}
+	return map[string]any{
+		"success":     true,
+		"access_token": token.AccessToken,
+		"expires_in":  token.ExpiresIn,
+		"message":     "授权成功",
+	}, nil
+}
+
+// CheckAuth 查询授权状态
+func (s *Service) CheckAuth(ctx context.Context) (map[string]any, error) {
+	token, err := s.client.GetToken(ctx)
+	if err != nil {
+		return map[string]any{"success": false, "message": "授权失效，请重新登录"}, err
+	}
+	return map[string]any{
+		"success":     true,
+		"access_token": token.AccessToken,
+		"expires_in":  token.ExpiresIn,
+		"message":     "授权有效",
+	}, nil
+}
+
+// Refresh 主动刷新令牌
+func (s *Service) Refresh(ctx context.Context) (map[string]any, error) {
+	token, err := s.client.RefreshToken(ctx)
+	if err != nil {
+		return nil, err
+	}
+	return map[string]any{
+		"success":     true,
+		"access_token": token.AccessToken,
+		"expires_in":  token.ExpiresIn,
+		"message":     "续期成功",
+	}, nil
+}
+
+// GetAccountInfo 获取授权账号信息
+func (s *Service) GetAccountInfo(ctx context.Context) (map[string]any, error) {
+	raw, err := s.client.Get(ctx, "/v1/account/info", nil)
+	if err != nil {
+		return nil, fmt.Errorf("get account info: %w", err)
+	}
+	return parseAPIResponse(raw)
+}
+
+// QueryOrder 通过 order_id 查询订单
+func (s *Service) QueryOrder(ctx context.Context, orderID string) (map[string]any, error) {
+	raw, err := s.client.Get(ctx, "/v1/orders/"+orderID, nil)
+	if err != nil {
+		return nil, fmt.Errorf("query order: %w", err)
+	}
+	return parseAPIResponse(raw)
+}
+
+// QueryOrderByOutNo 通过商户订单号查询
+func (s *Service) QueryOrderByOutNo(ctx context.Context, outTradeNo string) (map[string]any, error) {
+	raw, err := s.client.Get(ctx, "/v1/orders", map[string]string{"out_trade_no": outTradeNo})
+	if err != nil {
+		return nil, fmt.Errorf("query order by out_no: %w", err)
+	}
+	return parseAPIResponse(raw)
+}
+
+// RequestRefund 申请退款
+func (s *Service) RequestRefund(ctx context.Context, req map[string]any) (map[string]any, error) {
+	raw, err := s.client.Post(ctx, "/v1/refunds", nil, req)
+	if err != nil {
+		return nil, fmt.Errorf("request refund: %w", err)
+	}
+	return parseAPIResponse(raw)
+}
+
+// GetBill 分页获取账单
+func (s *Service) GetBill(ctx context.Context, page, pageSize int) (map[string]any, error) {
+	params := map[string]string{
+		"page":     fmt.Sprintf("%d", page),
+		"page_size": fmt.Sprintf("%d", pageSize),
+	}
+	raw, err := s.client.Get(ctx, "/v1/bills", params)
+	if err != nil {
+		return nil, fmt.Errorf("get bill: %w", err)
+	}
+	return parseAPIResponse(raw)
+}
+
+// GetBillByDate 按日期范围查账单
+func (s *Service) GetBillByDate(ctx context.Context, startDate, endDate string) (map[string]any, error) {
+	params := map[string]string{
+		"start_date": startDate,
+		"end_date":   endDate,
+	}
+	raw, err := s.client.Get(ctx, "/v1/bills/range", params)
+	if err != nil {
+		return nil, fmt.Errorf("get bill by date: %w", err)
+	}
+	return parseAPIResponse(raw)
+}
+
+// ─────────────────────────────────────────────
+// 内部辅助
+// ─────────────────────────────────────────────
+
+func parseAPIResponse(raw []byte) (map[string]any, error) {
+	var result struct {
+		Code    int         `json:"code"`
+		Message string      `json:"message"`
+		Data    interface{} `json:"data"`
+	}
+	if err := json.Unmarshal(raw, &result); err != nil {
+		return nil, err
+	}
+	if result.Code != 0 {
+		return nil, fmt.Errorf("api error code=%d msg=%s", result.Code, result.Message)
+	}
+	return map[string]any{"success": true, "data": result.Data, "message": result.Message}, nil
+}