feat: add order module

backend/app/http/orders/service.go

@@ -0,0 +1,77 @@
+package orders
+
+import (
+	"context"
+	"database/sql"
+
+	"backend/app/requests"
+	"backend/database/models/qvyun_v2/public/model"
+	"backend/database/models/qvyun_v2/public/table"
+	"backend/providers/otel"
+
+	. "github.com/go-jet/jet/v2/postgres"
+	log "github.com/sirupsen/logrus"
+	"go.opentelemetry.io/otel/attribute"
+	semconv "go.opentelemetry.io/otel/semconv/v1.4.0"
+)
+
+// @provider:except
+type Service struct {
+	db  *sql.DB
+	log *log.Entry `inject:"false"`
+}
+
+func (svc *Service) Prepare() error {
+	svc.log = log.WithField("module", "orders.service")
+	_ = Int(1)
+	return nil
+}
+
+// GetUserOrders
+func (svc *Service) GetOrders(ctx context.Context, pagination *requests.Pagination, filter *UserOrderFilter) ([]model.Orders, int64, error) {
+	_, span := otel.Start(ctx, "users.service.GetUserOrders")
+	defer span.End()
+	span.SetAttributes(
+		attribute.Int64("user.id", filter.UserID),
+		attribute.Int64("page.page", pagination.Page),
+		attribute.Int64("page.limit", pagination.Limit),
+	)
+
+	tbl := table.Orders
+
+	cond := tbl.UserID.EQ(Int64(filter.UserID))
+	if filter.Status != nil {
+		cond = cond.AND(tbl.Status.EQ(Int16(int16(*filter.Status))))
+	}
+
+	if filter.Type != nil {
+		cond = cond.AND(tbl.Type.EQ(Int16(int16(*filter.Type))))
+	}
+
+	if filter.CreatedAt != nil {
+		cond = cond.AND(tbl.CreatedAt.LT_EQ(TimestampT(*filter.CreatedAt)))
+	}
+
+	cntStmt := tbl.SELECT(COUNT(tbl.ID).AS("cnt")).WHERE(cond)
+	var count struct {
+		Cnt int64
+	}
+
+	if err := cntStmt.QueryContext(ctx, svc.db, &count); err != nil {
+		return nil, 0, err
+	}
+
+	stmt := tbl.
+		SELECT(tbl.AllColumns).
+		WHERE(cond).
+		ORDER_BY(tbl.CreatedAt.DESC()).
+		LIMIT(pagination.Limit).
+		OFFSET(pagination.Offset())
+	span.SetAttributes(semconv.DBStatementKey.String(stmt.DebugSql()))
+
+	var orders []model.Orders
+	if err := stmt.QueryContext(ctx, svc.db, &orders); err != nil {
+		return nil, 0, err
+	}
+	return orders, count.Cnt, nil
+}