edit path in dockerfile from frontend

frontend/app/dns-lookup.js

@@ -0,0 +1,132 @@
+// frontend/dns-lookup.js
+document.addEventListener('DOMContentLoaded', () => {
+    // --- DOM Elements (DNS Lookup) ---
+    const dnsDomainInput = document.getElementById('dns-domain-input');
+    const dnsTypeSelect = document.getElementById('dns-type-select');
+    const dnsLookupButton = document.getElementById('dns-lookup-button');
+    const dnsLookupErrorEl = document.getElementById('dns-lookup-error');
+    const dnsLookupResultsSection = document.getElementById('dns-lookup-results-section');
+    const dnsLookupQueryEl = document.getElementById('dns-lookup-query');
+    const dnsLookupLoader = document.getElementById('dns-lookup-loader');
+    const dnsLookupOutputEl = document.getElementById('dns-lookup-output');
+
+    // --- DOM Elements (Common) ---
+    const globalErrorEl = document.getElementById('global-error');
+    const commitShaEl = document.getElementById('commit-sha');
+
+    // --- Configuration ---
+    const API_BASE_URL = '/api'; // Anpassen, falls nötig
+
+    // --- Helper Functions ---
+
+    /** Zeigt globale Fehler an */
+    function showGlobalError(message) {
+        if (!globalErrorEl) return;
+        globalErrorEl.textContent = `Error: ${message}`;
+        globalErrorEl.classList.remove('hidden');
+    }
+
+    /** Versteckt globale Fehler */
+    function hideGlobalError() {
+        if (!globalErrorEl) return;
+        globalErrorEl.classList.add('hidden');
+    }
+
+    /**
+     * Generische Funktion zum Abrufen und Anzeigen von Lookup-Ergebnissen.
+     * @param {string} endpoint - Der API-Endpunkt (z.B. '/dns-lookup').
+     * @param {object} params - Query-Parameter als Objekt (z.B. { domain: '...', type: '...' }).
+     * @param {HTMLElement} resultsSection - Der Container für die Ergebnisse.
+     * @param {HTMLElement} loaderElement - Das Loader-Element.
+     * @param {HTMLElement} errorElement - Das Fehleranzeige-Element für diesen Lookup.
+     * @param {HTMLElement} queryElement - Das Element zur Anzeige der Suchanfrage.
+     * @param {HTMLElement} outputElement - Das Element zur Anzeige der Ergebnisse (<pre> oder <p>).
+     * @param {function} displayFn - Funktion zur Formatierung und Anzeige der Daten im outputElement.
+     */
+    async function fetchAndDisplay(endpoint, params, resultsSection, loaderElement, errorElement, queryElement, outputElement, displayFn) {
+        resultsSection.classList.remove('hidden');
+        loaderElement.classList.remove('hidden');
+        errorElement.classList.add('hidden');
+        outputElement.textContent = ''; // Clear previous results
+        if (queryElement) queryElement.textContent = Object.values(params).join(', '); // Display query
+        hideGlobalError(); // Hide global errors before new request
+
+        const urlParams = new URLSearchParams(params);
+        const url = `${API_BASE_URL}${endpoint}?${urlParams.toString()}`;
+
+        try {
+            const response = await fetch(url);
+            const data = await response.json();
+
+            if (!response.ok || !data.success) {
+                throw new Error(data.error || `Request failed with status ${response.status}`);
+            }
+
+            console.log(`Received ${endpoint} data:`, data);
+            displayFn(data, outputElement); // Call the specific display function
+
+        } catch (error) {
+            console.error(`Failed to fetch ${endpoint}:`, error);
+            errorElement.textContent = `Error: ${error.message}`;
+            errorElement.classList.remove('hidden');
+            outputElement.textContent = ''; // Clear output on error
+        } finally {
+            loaderElement.classList.add('hidden');
+        }
+    }
+
+    /** Ruft die Versionsinformationen (Commit SHA) ab */
+    async function fetchVersionInfo() {
+        if (!commitShaEl) return; // Don't fetch if element doesn't exist
+        try {
+            const response = await fetch(`${API_BASE_URL}/version`);
+            if (!response.ok) throw new Error(`Network response: ${response.statusText} (${response.status})`);
+            const data = await response.json();
+            commitShaEl.textContent = data.commitSha || 'unknown';
+        } catch (error) {
+            console.error('Failed to fetch version info:', error);
+            commitShaEl.textContent = 'error';
+            // Optionally show global error
+            // showGlobalError(`Could not load version info: ${error.message}`);
+        }
+    }
+
+    // --- DNS Lookup Specific Functions ---
+    function displayDnsResults(data, outputEl) {
+        if (!data.records || Object.keys(data.records).length === 0) {
+            outputEl.textContent = 'No records found for this domain and type.';
+            return;
+        }
+        // Format output as JSON string for simplicity
+        outputEl.textContent = JSON.stringify(data.records, null, 2);
+    }
+
+    function handleDnsLookupClick() {
+        const domain = dnsDomainInput.value.trim();
+        const type = dnsTypeSelect.value;
+        if (!domain) {
+            dnsLookupErrorEl.textContent = 'Please enter a domain name.';
+            dnsLookupErrorEl.classList.remove('hidden');
+            return;
+        }
+        fetchAndDisplay(
+            '/dns-lookup',
+            { domain, type },
+            dnsLookupResultsSection,
+            dnsLookupLoader,
+            dnsLookupErrorEl,
+            dnsLookupQueryEl,
+            dnsLookupOutputEl,
+            displayDnsResults
+        );
+    }
+
+    // --- Initial Load & Event Listeners ---
+    fetchVersionInfo(); // Lade Versionsinfo für Footer
+
+    dnsLookupButton.addEventListener('click', handleDnsLookupClick);
+    dnsDomainInput.addEventListener('keypress', (event) => {
+        if (event.key === 'Enter') handleDnsLookupClick();
+    });
+
+}); // End DOMContentLoaded