Refactor query conditions to improve readability

and maintainability.

bin/main.go

@@ -292,7 +292,12 @@ func main() {
 		// 拼接查询条件, 超级简洁写法
 		var addCondition = func(conditions *strings.Builder, key, column string) {
 			if values := QueryConditions(key); len(values) > 0 {
-				conditions.WriteString(fmt.Sprintf(" AND %s IN (%s)", column, strings.Join(values, ",")))
+				if conditions.Len() > 0 {
+					conditions.WriteString(" AND")
+				} else {
+					conditions.WriteString(" WHERE")
+				}
+				conditions.WriteString(fmt.Sprintf(" %s IN (%s)", column, strings.Join(values, ",")))
 			}
 		}
 		var conditions strings.Builder
@@ -315,14 +320,14 @@ func main() {
 				idsStr[i] = strconv.FormatInt(v, 10)
 			}
 			if len(idsStr) > 0 {
-				conditions.WriteString(fmt.Sprintf(" AND id IN (%s)", strings.Join(idsStr, ","))) // 拼接查询条件
+				if conditions.Len() > 0 {
+					conditions.WriteString(" AND")
+				} else {
+					conditions.WriteString(" WHERE")
+				}
+				conditions.WriteString(fmt.Sprintf(" id IN (%s)", strings.Join(idsStr, ","))) // 拼接查询条件
 			}
 		}
-		if conditions.Len() > 0 {
-			conditionsStr := conditions.String()
-			conditionsStr = strings.Replace(conditionsStr, " AND", "", 1) // 去掉第一个 AND
-			conditionsStr = " WHERE" + conditionsStr                      // 拼接 WHERE
-		}
 
 		// 获取图片列表
 		var images ListView