Update Attachment in Knowledge Folder

https://api.langdock.com

curl -X PATCH "https://api.langdock.com/knowledge/{folderId}" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -F "attachmentId=att_abc123def456" \
  -F "file=@/path/to/new-document.pdf"

const FormData = require("form-data");
const fs = require("fs");
const axios = require("axios");

async function updateAttachment(folderId, attachmentId, filePath) {
  const form = new FormData();
  form.append("attachmentId", attachmentId);
  form.append("file", fs.createReadStream(filePath));

  const response = await axios.patch(
    `https://api.langdock.com/knowledge/${folderId}`,
    form,
    {
      headers: {
        Authorization: "Bearer YOUR_API_KEY",
        ...form.getHeaders(),
      },
    }
  );

  return response.data;
}

// Example usage
try {
  const result = await updateAttachment(
    "folder_abc123",
    "att_xyz789",
    "/path/to/updated-report.pdf"
  );
  console.log("Attachment updated:", result);
} catch (error) {
  console.error("Failed to update:", error.response?.data?.message);
}

const FormData = require("form-data");
const fs = require("fs");
const axios = require("axios");

async function updateAttachmentWithUrl(folderId, attachmentId, filePath, sourceUrl) {
  const form = new FormData();
  form.append("attachmentId", attachmentId);
  form.append("file", fs.createReadStream(filePath));
  form.append("url", sourceUrl);

  const response = await axios.patch(
    `https://api.langdock.com/knowledge/${folderId}`,
    form,
    {
      headers: {
        Authorization: "Bearer YOUR_API_KEY",
        ...form.getHeaders(),
      },
    }
  );

  return response.data;
}

{
  status: "success";
  result: {
    id: string;          // Unique attachment ID
    name: string;        // Original filename
    mimeType: string;    // MIME type of the file
    createdAt: string;   // ISO 8601 timestamp
    updatedAt: string;   // ISO 8601 timestamp
    url: string | null;  // Source URL if provided
  };
}

{
  "status": "success",
  "result": {
    "id": "att_abc123def456",
    "name": "updated-report.pdf",
    "mimeType": "application/pdf",
    "createdAt": "2025-01-15T10:30:00.000Z",
    "updatedAt": "2025-01-20T14:45:00.000Z",
    "url": null
  }
}

{
  "message": "The file \"updated-report.pdf\" is declared as a PDF but its content does not start with the expected PDF header.",
  "code": "BAD_REQUEST"
}

try {
  const response = await updateAttachment(folderId, attachmentId, filePath);
} catch (error) {
  if (error.response) {
    console.error(error.response.data.message ?? "Update failed");
  }
}