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#!/usr/bin/env node
const csUrl = "https://aeronav.faa.gov/upload_313-d/supplements/";
const tppUrl = "https://aeronav.faa.gov/upload_313-d/terminal/";
const ifrEnrouteUrl = "https://aeronav.faa.gov/enroute/";
import { JSDOM } from "jsdom";
import moment from "moment";
import fs from "node:fs/promises";
import decompress from "decompress";
import { waitForDebugger } from "node:inspector";
const csRegions = ["SW"];
const tppRegions = ["SW1", "SW2", "SW3", "SW4"];
const ifrEnrouteLow = [2, 3, 4];
const ifrEnrouteHigh = [];
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: date.format("YYYY-MM-DD"),
};
}
}
}
}
}
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("YYYY-MM-DD"),
};
}
}
}
} else {
console.log(`skipped ${folder}: in the future`);
}
}
}
}
return files;
};
const getIFREnroute = async () => {
const dom = await JSDOM.fromURL(ifrEnrouteUrl, {});
let chd = dom.window.document.querySelector("pre").children;
const files = {};
for (const i of ifrEnrouteLow) {
files[`L${i.toFixed(0).padStart(2, "0")}`] = [];
}
for (const i of ifrEnrouteHigh) {
files[`H${i.toFixed(0).padStart(2, "0")}`] = [];
}
const pattern = /([0-9]{2}-[0-9]{2}-[0-9]{4})/;
for (let i = 0; i < chd.length; i++) {
if (chd[i] instanceof dom.window.HTMLAnchorElement) {
const folder = chd[i].textContent;
const m = folder.match(pattern);
if (m) {
const dom = await JSDOM.fromURL(`${ifrEnrouteUrl}${m[1]}`, {});
const date = moment(m[1], "MM-DD-YYYY");
const items = dom.window.document.querySelector("pre").children;
const pattern = /ENR_([A-Z0-9]+).zip/;
if (moment() >= date) {
for (let j = 0; j < items.length; j++) {
const file = items[j].textContent;
const m = file.match(pattern);
const url = `${ifrEnrouteUrl}/${folder}/${file}`;
if (m) {
const region = m[1];
const unzip = {};
unzip[`ENR_${region}.tif`] = ".tif";
if (files[region]) {
files[region].push({ url, date });
files[region].current = {
url,
date: date.format("YYYY-MM-DD"),
unzip,
};
}
}
}
} else {
console.log(`skipped ${folder}: in the future`);
}
}
}
}
return files;
};
const res = [
//{ prefix: "cs", files: await getChartSupplementDiretory() },
//{ prefix: "tpp", files: await getTerminalProcedurePublication() },
{ prefix: "ifr-enroute-low", files: await getIFREnroute() },
];
//console.log(res);
for (let r of res) {
for (let region of Object.keys(r.files)) {
const cur = r.files[region].current;
if (!cur) {
continue;
}
const file = `${r.prefix}-${region.toLowerCase()}-${cur.date}.${cur.unzip ? "zip" : "pdf"}`;
const fileExists = (path) =>
fs.stat(path).then(
() => true,
() => false,
);
if (await fileExists(file)) {
console.log(`file "${file}" already exists`);
} else {
console.log(`downloading "${file}"`);
await fetch(cur.url)
.then((r) => r.arrayBuffer())
.then((bytes) => fs.writeFile(file, new Uint8Array(bytes)));
if (cur.unzip) {
await decompress(file, "./", {
filter: (f) => cur.unzip[f.path] != null,
map: (f) => {
f.path = `${r.prefix}-${region.toLowerCase()}-${cur.date}${cur.unzip[f.path]}`;
return f;
},
});
}
}
}
}
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