Create service dockerising stuff

createService.ts

@@ -1,3 +1,5 @@
+import {parse, stringify} from 'yaml';
+
 (async () => {
   const serviceName = prompt('Service name? (This is used by the router to determine the route prefix)')?.replace('-service', '');
   if (!serviceName) return;
@@ -69,10 +71,15 @@
     if (!confirm('Service does not have permissions to "net", is this correct?'))
       perms.push(getPermissionByNameOrShort('net'));
   }
-
+  
   const serviceFile = `./${serviceName}-service/`;
+  let port;
   await Deno.mkdir(serviceFile);
-  await Deno.writeTextFile(serviceFile + 'index.ts', `
+  port = await getAvailablePort();
+  if (perms.find(p => p.name === 'net')) {
+    await Deno.writeTextFile(serviceFile + 'port', port)
+  }
+  await Deno.writeTextFile(serviceFile + 'main.ts', `
 import { CGGService } from 'cgg/Application.ts';
 import { Router } from 'oak';
 
@@ -85,6 +92,25 @@ console.log('User service running on ' + Deno.args.at(0));
 `);
   await Deno.writeTextFile(serviceFile + 'perms', perms.map(p => p.denoPerm).join('\n'));
   await Deno.writeTextFile(serviceFile + 'prefix', serviceName);
+  
+  if (confirm('Containerize this service?')) {
+    await Deno.writeTextFile(serviceFile + 'Dockerfile', `
+FROM denoland/deno:1.33.2
+${port ? 'EXPOSE ' + port : ''}
+
+WORKDIR /${serviceName}
+
+ADD ./user-service .
+COPY ./deno.jsonc .
+COPY ./secrets.json .
+COPY ./key.txt .
+ADD ./common ./common
+ADD ./lib ./lib
+ADD ./middleware ./middleware
+
+CMD ["run", "${perms.join('", "')}", main.ts${port ? `, "${port}"` : ''}]
+`);
+  }
 
   if (confirm('Does this service need DB access?'))
     await Deno.writeTextFile(serviceFile + 'data.ts', `
@@ -93,11 +119,36 @@ import { configDatabase } from 'lib/data.ts';
 
 configDatabase(mongoose);
 `)
+})();
 
-Deno.run({
-  cmd: [
-    'mplayer',
-    './chimes.wav'
-  ]
-})
-})();
+async function getAvailablePort() {
+  let start = 6900;
+
+  const missingPorts = [];
+  const takenPorts = [];
+  
+  for await (const dirEntry of Deno.readDir('.')) {
+    if (dirEntry.isFile || !dirEntry.name.includes('-service')) continue;
+    const dir = './' + dirEntry.name + '/';
+    if (!Array.from(Deno.readDirSync(dir)).find(e => e.name === 'port')) {
+      missingPorts.push(dir);
+      continue;
+    }
+
+    takenPorts.push(Number(await Deno.readTextFile(dir + 'port')));
+  }
+
+  takenPorts.sort();
+
+  for (const port of takenPorts) {
+    if (start === port) start++;
+  }
+
+  for (const missing of missingPorts) {
+    Deno.writeTextFile(missing + 'port', start.toString());
+    takenPorts.push(start);
+    while(takenPorts.includes(start)) start++;
+  }
+
+  return start.toString();
+}