first commit

pkg/api/handle_report.go

@@ -0,0 +1,28 @@
+package api
+
+import (
+	"github.com/gin-contrib/sessions"
+	"github.com/gin-gonic/gin"
+)
+
+func handleCustomerReport(c *gin.Context) {
+	session := sessions.Default(c)
+	userId := session.Get("userid").(int64)
+
+	row := db.QueryRow(`select sum(g.price)
+		from purchase p
+		join goods g on p.goods_id = g.id
+		where p.user_id = $1`,
+		userId)
+	
+	var sumPrice string
+	err := row.Scan(&sumPrice)
+	if err != nil {
+		c.AbortWithError(500, err)
+		return
+	}
+
+	c.JSON(200, gin.H{
+		"sum": sumPrice,
+	})
+}