feat: manually mirror opencoze's code from bytedance

Change-Id: I09a73aadda978ad9511264a756b2ce51f5761adf

backend/domain/knowledge/entity/const.go

@@ -0,0 +1,60 @@
+/*
+ * Copyright 2025 coze-dev Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package entity
+
+type DocumentStatus int64
+
+const (
+	DocumentStatusInit      DocumentStatus = -1 // 初始化
+	DocumentStatusUploading DocumentStatus = 0  // 上传中
+	DocumentStatusEnable    DocumentStatus = 1  // 生效
+	DocumentStatusDisable   DocumentStatus = 2  // 失效
+	DocumentStatusDeleted   DocumentStatus = 3  // 已删除
+	DocumentStatusChunking  DocumentStatus = 4  // 切片中
+	// DocumentStatusRefreshing DocumentStatus = 5 // 刷新中
+	DocumentStatusFailed DocumentStatus = 9 // 失败
+)
+
+func (s DocumentStatus) String() string {
+	switch s {
+	case DocumentStatusInit:
+		return "初始化"
+	case DocumentStatusUploading:
+		return "上传中"
+	case DocumentStatusEnable:
+		return "生效"
+	case DocumentStatusDisable:
+		return "失效"
+	case DocumentStatusDeleted:
+		return "已删除"
+	case DocumentStatusChunking:
+		return "切片中"
+	// case DocumentStatusRefreshing:
+	//	return "刷新中"
+	case DocumentStatusFailed:
+		return "失败"
+	default:
+		return "未知"
+	}
+}
+
+type DocumentSource int64
+
+const (
+	DocumentSourceLocal  DocumentSource = 0 // 本地文件上传
+	DocumentSourceCustom DocumentSource = 2 // 自定义文本
+)