277 lines
10 KiB
JavaScript
277 lines
10 KiB
JavaScript
"use strict";
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/*
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* LINE WORKS 共有ドライブAPIのラッパー。
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* 仕様書:
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* https://developers.worksmobile.com/jp/docs/sharedrive-list
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* https://developers.worksmobile.com/jp/docs/sharedrive-file-folder-create
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* https://developers.worksmobile.com/jp/docs/sharedrive-file-create
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* https://developers.worksmobile.com/en/docs/file-upload (アップロード段階2の詳細)
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*
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* 必要スコープ: file (読み書き全般)
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*/
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const fs = require("fs");
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const path = require("path");
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const { updateEnvValue } = require("./env");
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const defaultLogger = require("./logger");
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const LW_API_BASE_URL = "https://www.worksapis.com/v1.0";
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// 各API呼び出しの間隔(ミリ秒)とレート制限時の最大リトライ回数。
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// lineworks-anythingllm.js の lwFetch と同じスロットリング方式。
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const LW_REQUEST_DELAY_MS = Number(process.env.LW_REQUEST_DELAY_MS || 250);
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const LW_MAX_RETRIES = Number(process.env.LW_MAX_RETRIES || 5);
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function sleep(ms) {
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return new Promise((resolve) => setTimeout(resolve, ms));
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}
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async function lwFetch(url, options = {}, logger = defaultLogger) {
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for (let attempt = 0; attempt <= LW_MAX_RETRIES; attempt++) {
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await sleep(LW_REQUEST_DELAY_MS);
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const response = await fetch(url, options);
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if (response.status !== 429) {
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return response;
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}
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if (attempt === LW_MAX_RETRIES) {
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return response;
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}
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const retryAfterHeader = response.headers.get("retry-after");
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const retryAfterMs = retryAfterHeader
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? Number(retryAfterHeader) * 1000
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: LW_REQUEST_DELAY_MS * Math.pow(2, attempt + 1);
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logger.warn(
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`[Rate Limit] 429を検知。${Math.round(retryAfterMs / 1000)}秒待機してリトライします... ` +
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`(${attempt + 1}/${LW_MAX_RETRIES}) url=${url}`
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);
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await sleep(retryAfterMs);
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}
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}
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async function parseJsonResponse(response, errorLabel) {
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const raw = await response.text();
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let data;
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try {
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data = raw ? JSON.parse(raw) : {};
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} catch (_err) {
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throw new Error(`${errorLabel}のレスポンスがJSONではありません: ${raw}`);
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}
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if (!response.ok) {
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throw new Error(`${errorLabel}失敗: ${response.status} ${JSON.stringify(data)}`);
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}
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return data;
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}
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// ====================================================================
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// 共有ドライブID解決
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// ====================================================================
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// GET /sharedrives にはページング用パラメータ(count/cursor)が存在しない
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// (/files 系のようなresponseMetaData.nextCursorは返らない)ため、1回のみ呼び出す。
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async function listSharedDrives(token, logger = defaultLogger) {
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const res = await lwFetch(
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`${LW_API_BASE_URL}/sharedrives`,
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{ headers: { Authorization: `Bearer ${token}` } },
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logger
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);
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const data = await parseJsonResponse(res, "共有ドライブ一覧取得");
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return Array.isArray(data.sharedrives) ? data.sharedrives : [];
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}
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// .env の LW_SHAREDRIVE_ID があればそれを使用(APIを呼ばない)。無ければ
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// LW_SHAREDRIVE_NAME と一致する共有ドライブを検索し、.env に書き戻して次回以降キャッシュする。
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async function resolveSharedDriveId(token, logger = defaultLogger) {
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const cached = process.env.LW_SHAREDRIVE_ID;
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if (cached) {
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logger.info(`共有ドライブID: キャッシュ値を使用 (${cached})`);
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return cached;
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}
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const targetName = process.env.LW_SHAREDRIVE_NAME || "システムバックアップ";
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logger.info(`共有ドライブID未キャッシュ。名前で検索します: ${targetName}`);
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const drives = await listSharedDrives(token, logger);
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const found = drives.find((d) => d.name === targetName);
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if (!found) {
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throw new Error(`共有ドライブが見つかりません: ${targetName}`);
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}
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updateEnvValue("LW_SHAREDRIVE_ID", found.sharedriveId);
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logger.info(`共有ドライブID解決: name=${targetName} id=${found.sharedriveId} (.envへ保存)`);
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return found.sharedriveId;
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}
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// ====================================================================
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// フォルダ一覧・作成
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// ====================================================================
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// parentFileId が falsy の場合はルート直下を対象にする。
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async function listChildren(token, sharedriveId, parentFileId, logger = defaultLogger) {
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const files = [];
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let cursor = "";
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const basePath = parentFileId
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? `${LW_API_BASE_URL}/sharedrives/${encodeURIComponent(sharedriveId)}/files/${encodeURIComponent(parentFileId)}/children`
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: `${LW_API_BASE_URL}/sharedrives/${encodeURIComponent(sharedriveId)}/files`;
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while (true) {
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const params = new URLSearchParams();
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params.set("count", "200");
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if (cursor) params.set("cursor", cursor);
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const res = await lwFetch(
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`${basePath}?${params.toString()}`,
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{ headers: { Authorization: `Bearer ${token}` } },
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logger
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);
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const data = await parseJsonResponse(res, "ファイル一覧取得");
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const page = Array.isArray(data.files) ? data.files : [];
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files.push(...page);
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const nextCursor = data?.responseMetaData?.nextCursor || "";
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if (!nextCursor || nextCursor === cursor) break;
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cursor = nextCursor;
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}
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return files;
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}
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async function createFolder(token, sharedriveId, parentFileId, folderName, logger = defaultLogger) {
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const url = parentFileId
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? `${LW_API_BASE_URL}/sharedrives/${encodeURIComponent(sharedriveId)}/files/${encodeURIComponent(parentFileId)}/createfolder`
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: `${LW_API_BASE_URL}/sharedrives/${encodeURIComponent(sharedriveId)}/files/createfolder`;
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const res = await lwFetch(
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url,
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{
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method: "POST",
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headers: {
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Authorization: `Bearer ${token}`,
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"Content-Type": "application/json",
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},
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body: JSON.stringify({ fileName: folderName }),
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},
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logger
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);
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return parseJsonResponse(res, `フォルダ作成 (${folderName})`);
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}
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// 同名フォルダが既にあれば再利用し、無ければ作成する。
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async function ensureFolder(token, sharedriveId, parentFileId, folderName, logger = defaultLogger) {
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const children = await listChildren(token, sharedriveId, parentFileId, logger);
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const existing = children.find((f) => f.fileType === "FOLDER" && f.fileName === folderName);
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if (existing) {
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logger.info(`フォルダ確認: 既存を使用 name=${folderName} id=${existing.fileId}`);
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return existing;
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}
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const created = await createFolder(token, sharedriveId, parentFileId, folderName, logger);
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logger.info(`フォルダ確認: 新規作成 name=${folderName} id=${created.fileId}`);
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return created;
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}
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// ====================================================================
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// アップロード (段階1: uploadUrl発行 → 段階2: multipart/form-dataで実バイト送信)
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// ====================================================================
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async function fileToBlob(filePath, mimeType) {
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if (typeof fs.openAsBlob === "function") {
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// Node 18.13+: ファイル全体をメモリに載せずBlobとして扱える
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return fs.openAsBlob(filePath, { type: mimeType });
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}
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const buffer = fs.readFileSync(filePath);
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return new Blob([buffer], { type: mimeType });
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}
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async function uploadFile(token, sharedriveId, parentFileId, filePath, options = {}, logger = defaultLogger) {
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const overwrite = options.overwrite === true;
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const stat = fs.statSync(filePath);
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const fileName = path.basename(filePath);
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logger.info(`アップロード開始: ファイル名=${fileName} サイズ=${stat.size}bytes`);
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const startedAt = Date.now();
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const stage1Res = await lwFetch(
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`${LW_API_BASE_URL}/sharedrives/${encodeURIComponent(sharedriveId)}/files/${encodeURIComponent(parentFileId)}`,
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{
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method: "POST",
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headers: {
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Authorization: `Bearer ${token}`,
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"Content-Type": "application/json",
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},
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body: JSON.stringify({
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fileName,
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modifiedTime: new Date(stat.mtimeMs).toISOString(),
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fileSize: stat.size,
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overwrite,
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resume: false,
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suffixOnDuplicate: false,
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}),
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},
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logger
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);
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const stage1Data = await parseJsonResponse(stage1Res, `アップロードURL発行 (${fileName})`);
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if (!stage1Data.uploadUrl) {
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throw new Error(`アップロードURL発行失敗 (${fileName}): uploadUrlが返却されませんでした`);
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}
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const blob = await fileToBlob(filePath, "application/octet-stream");
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const form = new FormData();
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form.append("Filedata", blob, fileName);
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const stage2Res = await lwFetch(
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stage1Data.uploadUrl,
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{
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method: "POST",
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headers: { Authorization: `Bearer ${token}` },
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body: form,
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},
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logger
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);
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const stage2Data = await parseJsonResponse(stage2Res, `アップロード (${fileName})`);
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const elapsedSec = ((Date.now() - startedAt) / 1000).toFixed(1);
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logger.info(`アップロード成功: ファイル名=${fileName} fileId=${stage2Data.fileId} 所要時間=${elapsedSec}秒`);
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return stage2Data;
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}
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// ====================================================================
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// 削除
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// ====================================================================
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async function deleteFile(token, sharedriveId, fileId, logger = defaultLogger) {
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const res = await lwFetch(
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`${LW_API_BASE_URL}/sharedrives/${encodeURIComponent(sharedriveId)}/files/${encodeURIComponent(fileId)}`,
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{
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method: "DELETE",
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headers: { Authorization: `Bearer ${token}` },
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},
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logger
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);
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if (res.status !== 204 && !res.ok) {
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const raw = await res.text();
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throw new Error(`削除失敗 (${fileId}): ${res.status} ${raw}`);
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}
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}
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module.exports = {
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LW_API_BASE_URL,
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listSharedDrives,
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resolveSharedDriveId,
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listChildren,
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ensureFolder,
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uploadFile,
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deleteFile,
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};
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