add renew dns

.gitignore

@@ -1,4 +1,4 @@
 .vscode
 services.json
 .vscode/**/*
-
+.env

renew_dns.ts

@@ -0,0 +1,64 @@
+#!/usr/bin/env -S /root/.deno/bin/deno run --allow-env --allow-read --unstable --allow-sys --allow-run --allow-write
+import {load} from "https://deno.land/std@0.214.0/dotenv/mod.ts";
+import { Command } from "https://deno.land/x/cliffy@v0.25.7/mod.ts";
+
+async function changeTextRecord(domain: string, token:string, text: string){
+    const url = `https://www.duckdns.org/update?domains=${domain}&token=${token}&txt=${text}`
+    const res = await fetch(url);
+    const c = await res.text()
+    return c === "OK"
+}
+
+
+const env = await load();
+const domain = env.DUCKDNS_DOMAIN;
+const token = env.DUCKDNS_TOKEN;
+/*
+sudo certbot certonly --manual --preferred-challenges dns --renew-by-default -d "*.pages.prelude.duckdns.org"
+*/
+if(import.meta.main){
+    if (!domain || !token){
+        console.log("Env not found!");
+        Deno.exit(1);
+    }
+
+    //const cmd = new Deno.Command("certbot",{
+    //    args:[
+    //        "certonly",
+    //        "--manual",
+    //        "--preferred-challenges", 
+    //        "dns",
+    //        "--renew-by-default",
+    //        "-d", "*.pages.prelude.duckdns.org"
+    //    ],
+    //    stdin: "piped",
+    //    stdout: "piped",       
+    //});
+//
+    //const proc = cmd.spawn();
+    //await proc.stdout.pipeTo(Deno.stdout.writable);
+
+    await new Command()
+        .name("renew_dns")
+        .description("Duckdns TXT Record renewer")
+        .version("v1.0.0")
+        .option("-q, --quiet", "disable output.")
+        .arguments("<text>")
+        .action(async ({quiet},text)=>{
+            const s = await changeTextRecord(domain, token, text);
+            if (s) {
+                if (!quiet){
+                    console.log("success!");
+                }
+                Deno.exit(0);
+            }
+            else {
+                if(!quiet){
+                    console.log("failed!");
+                }
+                Deno.exit(1);
+            }
+        })
+        .parse(Deno.args);
+
+}