DNS BIND format

src/pages/directory/domains/display.rs

@@ -3,10 +3,10 @@
  *
  * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
  */
-
 use leptos::*;
 use leptos_router::{use_navigate, use_params_map};
 use serde::{Deserialize, Serialize};
+use std::ops::Add;
 
 use crate::{
     components::{
@@ -34,6 +34,46 @@ struct DnsRecord {
     content: String,
 }
 
+fn format_zonefile(records: &Vec<DnsRecord>, domain: &str) -> String {
+    let formatted_records: Vec<[&str; 3]> = records
+        .iter()
+        .filter_map(|record| {
+            record.name.strip_suffix(domain).map(|name| {
+                if name.is_empty() {
+                    ["@", &record.typ, &record.content]
+                } else {
+                    [name, &record.typ, &record.content]
+                }
+            })
+        })
+        .collect();
+
+    let max_len = formatted_records.iter().fold([0, 0], |acc, x| {
+        [acc[0].max(x[0].len()), acc[1].max(x[1].len())]
+    });
+
+    formatted_records.iter().fold(String::new(), |acc, x| {
+        let key = format!(
+            "{}{: <width1$} IN {: <width2$}",
+            acc,
+            x[0],
+            x[1],
+            width1 = max_len[0],
+            width2 = max_len[1]
+        );
+        if x[1] == "TXT" {
+            x[2].as_bytes()
+                .chunks(255)
+                .fold(key, |acc, x| {
+                    format!("{} \"{}\"", acc, String::from_utf8_lossy(x))
+                })
+                .add("\n")
+        } else {
+            format!("{} {}\n", key, x[2])
+        }
+    })
+}
+
 #[component]
 pub fn DomainDisplay() -> impl IntoView {
     let auth = use_authorization();
@@ -87,6 +127,7 @@ pub fn DomainDisplay() -> impl IntoView {
                         .filter(|r| r.typ == "TXT" && r.content.contains("DKIM"))
                         .count()
                         .to_string();
+                    let zonefile = format_zonefile(&records, &params.get().get("id").cloned().unwrap_or_default());
                     Some(
                         view! {
                             <Card>
@@ -135,6 +176,17 @@ pub fn DomainDisplay() -> impl IntoView {
                                             .collect_view()}
 
                                     </Table>
+                                    <div class="sm:col-span-12 pb-4">
+                                        <h2 class="text-lg font-semibold text-gray-800 dark:text-gray-200">
+                                            Zonefile
+                                        </h2>
+                                    </div>
+                                    <textarea
+                                        class="py-3 px-4 block w-full border-gray-200 rounded-lg text-sm focus:border-blue-500 focus:ring-blue-500 disabled:opacity-50 disabled:pointer-events-none dark:bg-slate-900 dark:border-gray-700 dark:text-gray-400 dark:focus:ring-gray-600"
+                                        readonly=true
+                                    >
+                                        {zonefile}
+                                    </textarea>
 
                                 </div>