[Assistants] Support delete assistant file

Author: qianmoQ

docs/docs/reference/openai/assistants.md

@@ -255,3 +255,23 @@ Returns:
   "deleted": true
 }
 ```
+
+### Delete assistant file
+
+---
+
+Deletes an assistant file.
+
+```java
+client.deleteAssistantFile("asst_xv9N9dNXstuV8OVLElLqgV7U","file-jNuKdx61rNQ0FUhuPFpMNmGZ");
+```
+
+Returns:
+
+```json
+{
+  "id": "file-abc123",
+  "object": "assistant.file.deleted",
+  "deleted": true
+}
+```

src/main/java/org/devlive/sdk/openai/DefaultApi.java

@@ -295,4 +295,11 @@ Single<AssistantsEntity> fetchUpdateAssistant(@Url String url,
      */
     @DELETE
     Single<AssistantsResponse> fetchDeleteAssistant(@Url String url);
+
+    /**
+     * Delete assistant file
+     * 删除助手文件
+     */
+    @DELETE
+    Single<AssistantsFileResponse> fetchDeleteAssistantFile(@Url String url);
 }

src/main/java/org/devlive/sdk/openai/DefaultClient.java

@@ -331,6 +331,13 @@ public AssistantsResponse deleteAssistant(String assistantId)
                 .blockingGet();
     }
 
+    public AssistantsFileResponse deleteAssistantFile(String assistantId, String fileId)
+    {
+        String url = String.format(ProviderUtils.getUrl(provider, UrlModel.FETCH_RETRIEVE_ASSISTANT_FILE), assistantId, fileId);
+        return this.api.fetchDeleteAssistantFile(url)
+                .blockingGet();
+    }
+
     private ObjectMapper createObjectMapper()
     {
         ObjectMapper objectMapper = new ObjectMapper();

src/main/java/org/devlive/sdk/openai/response/beta/AssistantsFileResponse.java

@@ -25,4 +25,10 @@ public class AssistantsFileResponse
 
     @JsonProperty(value = "has_more")
     private boolean hasMore;
+
+    @JsonProperty(value = "id")
+    private String id;
+
+    @JsonProperty(value = "deleted")
+    private boolean deleted;
 }

src/test/java/org/devlive/sdk/openai/AssistantsTest.java

@@ -82,4 +82,10 @@ public void testDeleteAssistants()
     {
         Assert.assertNotNull(client.deleteAssistant("asst_xv9N9dNXstuV8OVLElLqgV7U"));
     }
+
+    @Test
+    public void testDeleteAssistantsFile()
+    {
+        Assert.assertNotNull(client.deleteAssistantFile("asst_xv9N9dNXstuV8OVLElLqgV7U", "file-jNuKdx61rNQ0FUhuPFpMNmGZ"));
+    }
 }

src/test/java/org/devlive/sdk/openai/entity/ModerationEntityTest.java

@@ -18,7 +18,6 @@ public void testInput()
                 .inputs(Lists.newArrayList())
                 .build());
 
-
         Assert.assertTrue(ModerationEntity.builder()
                 .inputs(Lists.newArrayList("a"))
                 .build()