feat: add balance and ledger endpoints for tenant

- Implemented MyBalance and MyLedgerPage methods in the ledger service to retrieve current user balance and transaction history for a specified tenant.
- Added corresponding test cases for MyBalance and MyLedgerPage methods in the ledger test suite.
- Created DTOs for balance response and ledger items to structure the response data.
- Updated Swagger documentation to include new endpoints for retrieving tenant balance and ledgers.
- Added HTTP tests for the new endpoints to ensure proper functionality.

backend/app/http/tenant/me.go

@@ -2,7 +2,10 @@ package tenant
 
 import (
 	"quyun/v2/app/http/tenant/dto"
+	"quyun/v2/app/requests"
+	"quyun/v2/app/services"
 	"quyun/v2/database/models"
+	"quyun/v2/pkg/consts"
 
 	"github.com/gofiber/fiber/v3"
 )
@@ -32,3 +35,45 @@ func (*me) get(ctx fiber.Ctx, tenant *models.Tenant, user *models.User, tenantUs
 		TenantUser: tenantUser,
 	}, nil
 }
+
+// balance
+//
+//	@Summary	当前租户余额信息
+//	@Tags		Tenant
+//	@Accept		json
+//	@Produce	json
+//	@Param		tenantCode	path		string	true	"Tenant Code"
+//	@Success	200			{object}	dto.MeBalanceResponse
+//
+//	@Router		/t/:tenantCode/v1/me/balance [get]
+//	@Bind		tenant local key(tenant)
+//	@Bind		user local key(user)
+func (*me) balance(ctx fiber.Ctx, tenant *models.Tenant, user *models.User) (*dto.MeBalanceResponse, error) {
+	m, err := services.Ledger.MyBalance(ctx.Context(), tenant.ID, user.ID)
+	if err != nil {
+		return nil, err
+	}
+	return &dto.MeBalanceResponse{
+		Currency:      consts.CurrencyCNY,
+		Balance:       m.Balance,
+		BalanceFrozen: m.BalanceFrozen,
+		UpdatedAt:     m.UpdatedAt,
+	}, nil
+}
+
+// ledgers
+//
+//	@Summary	当前租户余额流水（分页）
+//	@Tags		Tenant
+//	@Accept		json
+//	@Produce	json
+//	@Param		tenantCode	path		string	true	"Tenant Code"
+//	@Success	200			{object}	requests.Pager{items=dto.MyLedgerItem}
+//
+//	@Router		/t/:tenantCode/v1/me/ledgers [get]
+//	@Bind		tenant local key(tenant)
+//	@Bind		user local key(user)
+//	@Bind		filter query
+func (*me) ledgers(ctx fiber.Ctx, tenant *models.Tenant, user *models.User, filter *dto.MyLedgerListFilter) (*requests.Pager, error) {
+	return services.Ledger.MyLedgerPage(ctx.Context(), tenant.ID, user.ID, filter)
+}