【Functions】GraphAPIを使ってSharePointへファイルアップロードする

yarn add @microsoft/microsoft-graph-client @azure/identity

{
  "@odata.context": "https://graph.microsoft.com/v1.0/$metadata#sites",
  "value": [
    {
      "createdDateTime": "2025-05-14T10:21:05Z",
      "id": "<tenant>.sharepoint.com,xxxxxxxxxxxxx,xxxxxxxxxxxxxxx",
      "lastModifiedDateTime": "2025-05-14T10:21:08Z",
      "name": "name",
      "webUrl": "https://<tenant>.sharepoint.com/sites/aaaaa",
      "displayName": "サイトの表示名"
    },
    {
      "createdDateTime": "2025-04-26T02:39:58Z",
      "id": "<tenent>.sharepoint.com,xxxxxxxxxxxxxxxx,xxxxxxxxxxxxxxxxxxx",
      "lastModifiedDateTime": "2025-04-26T02:40:06Z",
      "name": "NAME",
      "webUrl": "https://<tentn>.sharepoint.com/sites/hogehoge",
      "displayName": "サンプルサイト",
      "root": {},
      "siteCollection": {
        "hostname": "<tenant>.sharepoint.com"
      }
    }
  ]
}

import { app, HttpRequest, HttpResponseInit, InvocationContext } from "@azure/functions";
import { ClientSecretCredential } from "@azure/identity";
import { Client } from "@microsoft/microsoft-graph-client";
import { TokenCredentialAuthenticationProvider } from '@microsoft/microsoft-graph-client/authProviders/azureTokenCredentials';

const tenantId = 'xxxxxxxxxxxxxxxxxxxxxxxxx';
const clientId = 'xxxxxxxxxxxxxxxxxxxxxxxxx';
const clientSecret = 'xxxxxxxxxxxxxxxxxxxxx';

const folderPath = "/sites/<SiteID>/drive/root:/path/to/directory";

const httpTrigger1 = async (request: HttpRequest, context: InvocationContext) => {
    try {
        const credential = new ClientSecretCredential(tenantId, clientId, clientSecret);
        const authProvider = new TokenCredentialAuthenticationProvider(credential, {
            scopes: ["https://graph.microsoft.com/.default"]
        });

        const client = Client.initWithMiddleware({
            authProvider: authProvider,
            debugLogging: true,
        });
        const fileName = `result_${Date.now()}.txt`;
        const fileContent = JSON.stringify(request.body);

        await uploadFileToSharePoint(client, fileName, fileContent);

        return { status: 200, body: `File uploaded successfully: ${fileName}` };
    } catch (e) {
        context.log("Error:", e);
        return { status: 500, body: "Internal Server Error" };
    }
}

const uploadFileToSharePoint = async (graphClient: Client, fileName: string, fileContent: string): Promise<void> => {
    try {
        console.log(`uploadPath ==> ${folderPath}/${fileName}:/content`)
        const result = await graphClient.api(`${folderPath}/${fileName}:/content`)
            .put(fileContent);
        console.log("File upload result:", result);
        console.log(`File uploaded: ${folderPath}/${fileName}`);
    } catch (e) {
        console.log("Error uploading file:", e);
        throw e;
    }
}

app.http('httpTrigger1', {
    methods: ['GET', 'POST'],
    authLevel: 'anonymous',
    handler: httpTrigger1
});

const credential = new ClientSecretCredential(tenantId, clientId, clientSecret);
const authProvider = new TokenCredentialAuthenticationProvider(credential, {
    scopes: ["https://graph.microsoft.com/.default"]
});
const client = Client.initWithMiddleware({
    authProvider: authProvider,
    debugLogging: true,
});

const folderPath = "/sites/<SiteID>/drive/root:/path/to/directory";
...
const result = await graphClient.api(`${folderPath}/${fileName}:/content`)
    .put(fileContent);