fix: better whois and smaller tld list

src/lib/whois.ts

@@ -1,55 +1,11 @@
-export class WhoIs {
-  rdapEndpoints: Record<string, string> | null = null;
-  error: string | null = null;
-
-  async init() {
-    await this.loadRdapEndpoints();
-  }
-
-  async loadRdapEndpoints() {
-    try {
-      const response = await fetch(
-        `https://cors.klemek.fr/https://data.iana.org/rdap/dns.json`,
-      );
-      const content: { services: { 0: string[]; 1: string[] }[] } =
-        await response.json();
-      const rdapEndpoints: Record<string, string> = {};
-      content.services.forEach((item) => {
-        if (item[1][0]) {
-          const supplier: string = item[1][0];
-          item[0].forEach((domain: string) => {
-            rdapEndpoints[domain] = supplier;
-          });
-        }
-      });
-      this.rdapEndpoints = rdapEndpoints;
-    } catch (e) {
-      this.error = "Could not load RDAP endpoints";
-      throw e;
-    }
-  }
-
-  getRdapQuery(domain: string): string {
-    if (this.rdapEndpoints === null) {
-      throw Error("RDAP endpoints not loaded");
-    }
-    for (const tld of Object.keys(this.rdapEndpoints)) {
-      if (domain.endsWith(`.${tld}`) && this.rdapEndpoints[tld]) {
-        return `${this.rdapEndpoints[tld]}/domain/${domain}`;
-      }
-    }
-    throw Error(`RDAP supplier not found for ${domain}`);
-  }
-
-  async isDomainAvailable(domain: string): Promise<boolean> {
-    const url = this.getRdapQuery(domain);
-    try {
-      const response = await fetch(`https://cors.klemek.fr/${url}`, {
-        method: "HEAD",
-      });
-      return response.status === 404;
-    } catch {
-      return false;
-    }
+export async function isDomainAvailable(domain: string): Promise<boolean> {
+  try {
+    const response = await fetch(
+      `https://whois.klemek.fr/api/lookup/${domain}`,
+    );
+    const content = await response.json();
+    return content?.data?.nameservers?.length === 0;
+  } catch {
+    return false;
   }
 }