[Update] split code

config.js

@@ -0,0 +1 @@
+export const ACCESS_TOKEN = "YOUR_ACCESS_TOKEN";

dowload_album.js

@@ -0,0 +1,64 @@
+import fetch from "node-fetch";
+import fs from "fs";
+import { ACCESS_TOKEN } from "./config.js";
+
+const HOST = "https://graph.facebook.com";
+
+export const fetchAlbumDataFromCursor = async (
+  albumId,
+  cursor,
+  limit = 100
+) => {
+  // create link to fetch
+  let url = `${HOST}/${albumId}/photos?fields=largest_image&limit=${limit}&access_token=${ACCESS_TOKEN}`;
+  if (cursor) {
+    url += `&after=${cursor}`;
+  }
+
+  // fetch data
+  const response = await fetch(url);
+  const json = await response.json();
+
+  // return all_links + next cursor
+  return {
+    all_links: json.data.map((_) => _.largest_image.source),
+    nextCursor: json.paging?.cursors?.after || null,
+  };
+};
+
+export const fetchAlbumData = async (
+  albumId,
+  pageNum = Infinity,
+  pageSize = 100
+) => {
+  let currentPage = 0;
+  let hasNextCursor = true;
+  let nextCursor = null;
+  let all_links = [];
+
+  while (hasNextCursor && currentPage < pageNum) {
+    console.log(`> Fetching page: ${currentPage}, pageSize: ${pageSize} ...`);
+
+    const data = await fetchAlbumDataFromCursor(albumId, nextCursor, pageSize);
+    all_links = all_links.concat(data.all_links);
+
+    console.log(`> Fetched ${data.all_links.length} photos.`);
+
+    nextCursor = data.nextCursor;
+    hasNextCursor = nextCursor != null;
+    currentPage++;
+  }
+
+  return all_links;
+};
+
+export const saveAlbumPhotoLinks = async (albumId) => {
+  const links = await fetchAlbumData(albumId);
+
+  const fileName = `data/${albumId}.txt`;
+  console.log(`Writting ${links.length} photo links to ${fileName}`);
+  fs.writeFile(fileName, links.join("\n"), { flag: "a+" }, (err) => {
+    if (err) throw err;
+    console.log("Saved!");
+  });
+};

index.js

@@ -1,64 +1,4 @@
-import fetch from "node-fetch";
-import fs from "fs";
-
-const HOST = "https://graph.facebook.com";
-const ACCESS_TOKEN = "YOUR_ACCESS_TOKEN";
-
-const fetchAlbumDataFromCursor = async (albumId, cursor, limit = 100) => {
-  // create link to fetch
-  let url = `${HOST}/${albumId}/photos?fields=largest_image&limit=${limit}&access_token=${ACCESS_TOKEN}`;
-  if (cursor) {
-    url += `&after=${cursor}`;
-  }
-
-  // fetch data
-  const response = await fetch(url);
-  const json = await response.json();
-
-  // save data to all_link
-  let all_links = json.data.map((_) => _.largest_image.source);
-  console.log(`Fetched ${all_links.length} photos.`);
-
-  // get next cursor
-  const nextCursor = json.paging?.cursors?.after || null;
-
-  // return all_links + next cursor
-  return {
-    all_links,
-    nextCursor,
-  };
-};
-
-const fetchAlbumData = async (albumId, pageNum = Infinity, pageSize = 100) => {
-  let currentPage = 0;
-  let hasNextCursor = true;
-  let nextCursor = null;
-  let all_links = [];
-
-  while (hasNextCursor && currentPage < pageNum) {
-    console.log(`> Fetching page: ${currentPage}, pageSize: ${pageSize}`);
-
-    const data = await fetchAlbumDataFromCursor(albumId, nextCursor, pageSize);
-    all_links = all_links.concat(data.all_links);
-
-    nextCursor = data.nextCursor;
-    hasNextCursor = nextCursor != null;
-    currentPage++;
-  }
-
-  return all_links;
-};
-
-const saveAlbumPhotoLinks = async (albumId) => {
-  const links = await fetchAlbumData(albumId);
-
-  const fileName = `data/${albumId}.txt`;
-  console.log(`Writting ${links.length} photo links to ${fileName}`);
-  fs.writeFile(fileName, links.join("\n"), { flag: "a+" }, (err) => {
-    if (err) throw err;
-    console.log("Saved!");
-  });
-};
+import { saveAlbumPhotoLinks } from "./dowload_album.js";
 
 // https://www.facebook.com/media/set/?vanity=ColourfulSpace&set=a.945632905514659
 saveAlbumPhotoLinks("945632905514659");