feat: finish back-end work (untested)

api/utils/consts.go

@@ -64,11 +64,15 @@ func GetOrderTableQueryString(filter int64) string {
 		ORDER BY date_due ` + order + ` 
 		OFFSET $1
 		LIMIT $2;
-
 	`
 	filter = filter & ^ASCEND_DATE_DUE
 
-	conditions := ""
+	conditions := `
+	WHERE
+		orderer LIKE '%' || $3 || '%'
+		AND TO_CHAR(date_due, 'YYYY-MM-DD') LIKE '%' || $4 || '%'
+		AND TO_CHAR(date_placed, 'YYYY-MM-DD') LIKE '%' || $5 || '%'
+	`
 	if filter > 0 {
 		if filter&FUTURE_FILTER > 0 {
 			conditions += "AND date_due > now()\n"
@@ -94,9 +98,6 @@ func GetOrderTableQueryString(filter int64) string {
 		if filter&UNPAID_FILTER > 0 {
 			conditions += "AND paid = FALSE\n"
 		}
-		if len(conditions) > 0 {
-			conditions = "WHERE " + conditions[4:]
-		}
 	}
 
 	query_string := query_string_first_part + conditions + query_string_second_part