first commit

.gitignore

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+node_modules/
+config/config.json

package-lock.json

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+{
+  "name": "bindd",
+  "version": "1.0.0",
+  "lockfileVersion": 2,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "bindd",
+      "version": "1.0.0",
+      "license": "ISC",
+      "dependencies": {
+        "flumm-fetch": "^1.0.1"
+      }
+    },
+    "node_modules/flumm-fetch": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/flumm-fetch/-/flumm-fetch-1.0.1.tgz",
+      "integrity": "sha512-pZ5U0hheCSW43vfGZQMunr03U7rUOX+iy2y13Tu4nc3iRL+E/Qfeo5nZ2B2JMYKOGIx1A1anUYOz+ulyhouyjg=="
+    }
+  },
+  "dependencies": {
+    "flumm-fetch": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/flumm-fetch/-/flumm-fetch-1.0.1.tgz",
+      "integrity": "sha512-pZ5U0hheCSW43vfGZQMunr03U7rUOX+iy2y13Tu4nc3iRL+E/Qfeo5nZ2B2JMYKOGIx1A1anUYOz+ulyhouyjg=="
+    }
+  }
+}

package.json

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+{
+  "name": "bindd",
+  "version": "1.0.0",
+  "description": "",
+  "main": "src/index.mjs",
+  "scripts": {
+    "start": "node --experimental-json-modules src/index.mjs"
+  },
+  "author": "Flummi",
+  "license": "ISC",
+  "dependencies": {
+    "flumm-fetch": "^1.0.1"
+  }
+}

src/index.mjs

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+import cfg from "../config/config.json" assert { type: "json" };
+import fetch from "flumm-fetch";
+import { promises as fs } from "fs";
+import { execSync as exec } from "child_process";
+
+class updateBind {
+  bindTpl = zone => `zone "${zone}" {\n  type slave;\n  file "/etc/bind/keyhelp_domains/${zone}";\n  masters { 135.181.244.181; };\n};\n`;
+  fetchApi = async path => (await fetch(`https://${cfg.api.host}/${path}`, { headers: { "X-API-Key": cfg.api.key } })).json();
+
+  constructor() {
+    return (async () => {
+      await this.init();
+      return this;
+    })();
+  };
+
+  async init() {
+    try {
+      this.domains = (await fs.readFile(cfg.bind.config, "utf-8"))
+        .match(/zone \"(.*?)\"/g)
+        .map(z => z.replace(/zone \"(.*?)\"/, "$1"));
+    } catch {
+      this.domains = [];
+    }
+  };
+
+
+  async generateConfig() {
+    const dnslist = (await Promise.all((await this.fetchApi("domains?subdomains=false")).map(async domain => {
+      const dns = await this.fetchApi(`dns/${domain.id}`);
+      if(dns.is_dns_disabled)
+        return false;
+      return {
+        id: domain.id,
+        name: domain.domain,
+        dkim: dns.dkim_txt_record,
+        dns: dns.records
+      };
+    }))).filter(Boolean);
+
+    if(dnslist.length > 0) {
+      const files = await fs.readdir(cfg.bind.domainFiles);
+      await Promise.all(files.map(async file => await fs.unlink(`${cfg.bind.domainFiles}/${file}`)));
+    }
+    
+    let bindconfig = [];
+    for(const domain of dnslist)
+      bindconfig.push(this.bindTpl(domain.name));
+    await fs.writeFile(cfg.bind.config, bindconfig);
+  };
+
+  reloadBind() {
+    return exec("systemctl restart named");
+  };
+};
+
+const bind = await new updateBind();
+
+await bind.generateConfig();
+bind.reloadBind();

start.sh

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+#!/bin/bash
+node --experimental-json-modules src/index.mjs