1 files changed, 105 insertions, 0 deletions
diff --git a/app.mjs b/app.mjs
new file mode 100755
index 0000000..77fa213
--- /dev/null
+++ b/app.mjs
@@ -0,0 +1,105 @@
+#!/usr/bin/env node
+
+const csUrl = "https://aeronav.faa.gov/upload_313-d/supplements/";
+const tppUrl = "https://aeronav.faa.gov/upload_313-d/terminal/";
+
+import { JSDOM } from "jsdom";
+import moment from "moment";
+import fs from "node:fs/promises";
+
+const csRegions = ["SW"];
+const tppRegions = ["SW1", "SW2", "SW3", "SW4"];
+
+const getChartSupplementDiretory = async () => {
+ const dom = await JSDOM.fromURL(csUrl, {});
+ let chd = dom.window.document.querySelector("pre").children;
+ const files = {};
+ for (let i = 0; i < csRegions.length; i++) {
+ files[csRegions[i]] = [];
+ }
+ const pattern = /CS_([A-Z]+)_([0-9]{8}).pdf/;
+ for (let i = 0; i < chd.length; i++) {
+ if (chd[i] instanceof dom.window.HTMLAnchorElement) {
+ const file = chd[i].textContent;
+ const m = file.match(pattern);
+ if (m) {
+ const region = m[1];
+ const date = moment(m[2], "YYYYMMDD");
+ const url = `${csUrl}${file}`;
+ if (files[region]) {
+ files[region].push({ url, date });
+ if (moment() >= date) {
+ files[region].current = { url, date: m[2] };
+ }
+ }
+ }
+ }
+ }
+ return files;
+};
+
+const getTerminalProcedurePublication = async () => {
+ const dom = await JSDOM.fromURL(tppUrl, {});
+ let chd = dom.window.document.querySelector("pre").children;
+ const files = {};
+ for (let i = 0; i < tppRegions.length; i++) {
+ files[tppRegions[i]] = [];
+ }
+ const pattern = /([0-9]{4}-[0-9]{2}-[0-9]{2})/;
+ for (let i = 0; i < chd.length; i++) {
+ if (chd[i] instanceof dom.window.HTMLAnchorElement) {
+ const folder = chd[i].textContent;
+ const m = folder.match(pattern);
+ if (m) {
+ const dom = await JSDOM.fromURL(`${tppUrl}${m[1]}`, {});
+ const date = moment(m[1], "YYYY-MM-DD");
+ const items = dom.window.document.querySelector("pre").children;
+ const pattern = /([A-Z1-9]+).pdf/;
+ if (moment() >= date) {
+ for (let j = 0; j < items.length; j++) {
+ const file = items[j].textContent;
+ const m = file.match(pattern);
+ const url = `${tppUrl}/${folder}/${file}`;
+ if (m) {
+ const region = m[1];
+ if (files[region]) {
+ files[region].push({ url, date });
+ files[region].current = {
+ url,
+ date: date.format("YYYYMMDD"),
+ };
+ }
+ }
+ }
+ } else {
+ console.log(`skipped ${folder}: in the future`);
+ }
+ }
+ }
+ }
+ return files;
+};
+
+const res = [
+ { prefix: "cs", files: await getChartSupplementDiretory() },
+ { prefix: "tpp", files: await getTerminalProcedurePublication() },
+];
+for (let r of res) {
+ for (let region of Object.keys(r.files)) {
+ const cur = r.files[region].current;
+ const file = `${r.prefix}-${region}-${cur.date}.pdf`;
+ const fileExists = (path) =>
+ fs.stat(path).then(
+ () => true,
+ () => false,
+ );
+ if (await fileExists(file)) {
+ console.log(`file "${file}" already exists`);
+ } else {
+ console.log(`downloading "${file}"`);
+ await fetch(cur.url)
+ .then((r) => r.arrayBuffer())
+ .then((bytes) => fs.writeFile(file, new Uint8Array(bytes)));
+ }
+ }
+}