/**
* Read document content functionality
*/
const config = require("../config");
const { graphRequest, downloadFile, getBasePath } = require("../utils");
/**
* Build file path for Graph API
*/
function buildFilePath(folderPath, fileName) {
const folder = folderPath ? folderPath.replace(/^\/+|\/+$/g, "") : "";
const fullPath = folder ? `${folder}/${fileName}` : fileName;
return `/root:/${encodeURIComponent(fullPath).replace(/%2F/g, "/")}:`;
}
/**
* Get document content handler
* @param {object} args - Tool arguments
* @returns {object} - MCP response
*/
async function handleGetDocumentContent(args) {
const fileName = args.file_name;
if (!fileName) {
return {
content: [
{
type: "text",
text: JSON.stringify(
{
success: false,
error: "File name is required.",
},
null,
2,
),
},
],
};
}
try {
const { basePath } = await getBasePath();
const filePath = buildFilePath(args.folder_path, fileName);
// Get file metadata including download URL
const endpoint = `${basePath}${filePath}`;
const fileInfo = await graphRequest(endpoint, {
params: {
$select: config.DOCUMENT_DETAIL_FIELDS,
},
});
// Get download URL
const downloadUrl = fileInfo["@microsoft.graph.downloadUrl"];
if (!downloadUrl) {
throw new Error("Could not get download URL for file");
}
// Download content
const contentBuffer = await downloadFile(downloadUrl);
const mimeType = fileInfo.file?.mimeType || "application/octet-stream";
// Try to decode as text for text-based files
const textTypes = [
"text/",
"application/json",
"application/xml",
"application/javascript",
];
const isTextFile =
textTypes.some((t) => mimeType.includes(t)) ||
/\.(txt|md|json|xml|html|css|js|ts|py|java|c|cpp|h|yml|yaml|csv|log)$/i.test(
fileName,
);
let content;
let encoding;
if (isTextFile) {
content = contentBuffer.toString("utf8");
encoding = "text";
} else {
content = contentBuffer.toString("base64");
encoding = "base64";
}
return {
content: [
{
type: "text",
text: JSON.stringify(
{
success: true,
file: {
name: fileInfo.name,
size: fileInfo.size,
mimeType: mimeType,
webUrl: fileInfo.webUrl,
lastModified: fileInfo.lastModifiedDateTime,
},
encoding: encoding,
content: content,
},
null,
2,
),
},
],
};
} catch (error) {
if (
error.message ===
"Authentication required. Please use the authenticate tool first."
) {
return {
content: [
{
type: "text",
text: "Authentication required. Please use the 'authenticate' tool first.",
},
],
};
}
return {
content: [
{
type: "text",
text: JSON.stringify(
{
success: false,
error: error.message,
},
null,
2,
),
},
],
};
}
}
module.exports = handleGetDocumentContent;
module.exports.buildFilePath = buildFilePath;
