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kabyle-multi-translate

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boffire commited on Jul 11

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c948ffa

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1 Parent(s): 3252379

Update app.py

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app.py +179 -79

app.py CHANGED Viewed

@@ -3,6 +3,7 @@
 Kabyle Translation Hub - Hugging Face Spaces Edition
 Simple translation interface: MarianMT vs LibreTranslate
 Users choose their preferred translation - no metrics, no scores.
 """
 import warnings
@@ -34,33 +35,35 @@ model = None
 tokenizer = None
 device = None
 def load_model():
     """Load MarianMT model once and cache it"""
     global model, tokenizer, device
     if model is None:
         print("Loading MarianMT model...")
         device = torch.device('cuda' if torch.cuda.is_available() else 'cpu')
         tokenizer = AutoTokenizer.from_pretrained(MODEL_ID, use_fast=False)
         model = AutoModelForSeq2SeqLM.from_pretrained(MODEL_ID).to(device).eval()
         print(f"Model loaded successfully on {device}")
     return model, tokenizer, device
 def translate_marian(text):
     """Translate using MarianMT with multiple alternatives"""
     if not text or not text.strip():
         return ["Please enter text to translate"]
     try:
         model, tokenizer, device = load_model()
         # Prepare inputs
         inputs = tokenizer(text, return_tensors='pt', padding=True, truncation=True, max_length=512)
         inputs = {k: v.to(device) for k, v in inputs.items()}
         with torch.no_grad():
             # Simple beam search without group beam search
             outputs = model.generate(
@@ -71,21 +74,22 @@ def translate_marian(text):
                 early_stopping=True,
                 do_sample=False,
             )
         translations = []
         for output in outputs:
             trans = tokenizer.decode(output, skip_special_tokens=True)
             if trans and trans not in translations:
                 translations.append(trans)
         return translations if translations else ["[Error: No translation generated]"]
     except Exception as e:
         print(f"MarianMT translation error: {e}")
         import traceback
         traceback.print_exc()
         return [f"[Error: {str(e)}]"]
 def translate_libre_variant(text, variant_code):
     """Translate using a specific LibreTranslate variant"""
     try:
@@ -101,12 +105,13 @@ def translate_libre_variant(text, variant_code):
     except Exception as e:
         return {"success": False, "text": f"[Error: {str(e)[:50]}]"}
 def translate_libre_all_variants(text):
     """Translate using all LibreTranslate variants in parallel"""
     results = {}
     with ThreadPoolExecutor(max_workers=4) as executor:
         future_to_name = {
-            executor.submit(translate_libre_variant, text, code): name
             for name, code in KABYLE_VARIANTS.items()
         }
         for future in as_completed(future_to_name, timeout=15):
@@ -117,6 +122,7 @@ def translate_libre_all_variants(text):
                 results[name] = {"success": False, "text": f"[Error: {e}]"}
     return results
 HTML_TEMPLATE = """
 <!DOCTYPE html>
 <html lang="en">
@@ -138,9 +144,9 @@ HTML_TEMPLATE = """
             --radius: 12px;
             --radius-sm: 8px;
         }
         * { margin: 0; padding: 0; box-sizing: border-box; }
         body {
             font-family: system-ui, -apple-system, sans-serif;
             background: linear-gradient(135deg, var(--bg-primary) 0%, #1a1a2e 100%);
@@ -148,17 +154,17 @@ HTML_TEMPLATE = """
             min-height: 100vh;
             padding: 20px;
         }
         .container {
             max-width: 1000px;
             margin: 0 auto;
         }
         header {
             text-align: center;
             padding: 40px 20px;
         }
         header h1 {
             font-size: 2.5rem;
             font-weight: 800;
@@ -167,12 +173,12 @@ HTML_TEMPLATE = """
             -webkit-text-fill-color: transparent;
             margin-bottom: 10px;
         }
         header p {
             color: var(--text-secondary);
             font-size: 1.1rem;
         }
         .input-card {
             background: var(--bg-secondary);
             border-radius: var(--radius);
@@ -180,13 +186,13 @@ HTML_TEMPLATE = """
             margin-bottom: 24px;
             border: 1px solid var(--border);
         }
         .input-group {
             display: flex;
             flex-direction: column;
             gap: 16px;
         }
         textarea {
             width: 100%;
             padding: 16px;
@@ -200,16 +206,16 @@ HTML_TEMPLATE = """
             font-family: inherit;
             transition: border-color 0.2s;
         }
         textarea:focus {
             outline: none;
             border-color: var(--accent-primary);
         }
         textarea::placeholder {
             color: var(--text-secondary);
         }
         .btn-primary {
             background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
             color: white;
@@ -225,31 +231,31 @@ HTML_TEMPLATE = """
             justify-content: center;
             gap: 8px;
         }
         .btn-primary:hover {
             transform: translateY(-2px);
             box-shadow: 0 10px 30px rgba(99, 102, 241, 0.3);
         }
         .btn-primary:disabled {
             opacity: 0.6;
             cursor: not-allowed;
             transform: none;
         }
         .results-container {
             display: flex;
             flex-direction: column;
             gap: 20px;
         }
         .engine-card {
             background: var(--bg-secondary);
             border-radius: var(--radius);
             border: 1px solid var(--border);
             overflow: hidden;
         }
         .engine-header {
             padding: 20px 24px;
             background: var(--bg-tertiary);
@@ -258,7 +264,7 @@ HTML_TEMPLATE = """
             align-items: center;
             justify-content: space-between;
         }
         .engine-title {
             display: flex;
             align-items: center;
@@ -266,7 +272,7 @@ HTML_TEMPLATE = """
             font-size: 1.1rem;
             font-weight: 600;
         }
         .engine-badge {
             font-size: 0.75rem;
             padding: 4px 12px;
@@ -275,11 +281,11 @@ HTML_TEMPLATE = """
             color: var(--text-secondary);
             border: 1px solid var(--border);
         }
         .translation-list {
             list-style: none;
         }
         .translation-item {
             padding: 20px 24px;
             border-bottom: 1px solid var(--border);
@@ -290,45 +296,45 @@ HTML_TEMPLATE = """
             justify-content: space-between;
             gap: 16px;
         }
         .translation-item:last-child {
             border-bottom: none;
         }
         .translation-item:hover {
             background: rgba(99, 102, 241, 0.1);
         }
         .translation-item.selected {
             background: rgba(16, 185, 129, 0.15);
             border-left: 4px solid var(--accent-success);
         }
         .translation-text {
             flex: 1;
             font-size: 1.05rem;
             line-height: 1.6;
             color: var(--text-primary);
         }
         .copy-icon {
             opacity: 0;
             color: var(--accent-primary);
             transition: opacity 0.2s;
             flex-shrink: 0;
         }
         .translation-item:hover .copy-icon {
             opacity: 1;
         }
         .variant-grid {
             display: grid;
             grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
             gap: 1px;
             background: var(--border);
         }
         .variant-item {
             background: var(--bg-secondary);
             padding: 16px 20px;
@@ -339,22 +345,22 @@ HTML_TEMPLATE = """
             gap: 8px;
             position: relative;
         }
         .variant-item:hover {
             background: rgba(99, 102, 241, 0.1);
         }
         .variant-item.selected {
             background: rgba(16, 185, 129, 0.15);
             box-shadow: inset 4px 0 0 var(--accent-success);
         }
         .variant-header {
             display: flex;
             align-items: center;
             justify-content: space-between;
         }
         .variant-name {
             font-size: 0.75rem;
             color: var(--text-secondary);
@@ -362,7 +368,7 @@ HTML_TEMPLATE = """
             letter-spacing: 0.5px;
             font-weight: 600;
         }
         .variant-code {
             font-size: 0.7rem;
             color: var(--text-secondary);
@@ -371,23 +377,23 @@ HTML_TEMPLATE = """
             padding: 2px 8px;
             border-radius: 4px;
         }
         .variant-text {
             font-size: 1rem;
             color: var(--text-primary);
             line-height: 1.5;
         }
         .variant-item.error {
             opacity: 0.6;
         }
         .variant-item.error .variant-text {
             color: #ef4444;
             font-family: monospace;
             font-size: 0.85rem;
         }
         .source-display {
             background: var(--bg-tertiary);
             padding: 20px 24px;
@@ -395,7 +401,7 @@ HTML_TEMPLATE = """
             margin-bottom: 20px;
             border: 1px solid var(--border);
         }
         .source-label {
             font-size: 0.75rem;
             color: var(--text-secondary);
@@ -403,24 +409,24 @@ HTML_TEMPLATE = """
             letter-spacing: 0.5px;
             margin-bottom: 8px;
         }
         .source-text {
             font-size: 1.1rem;
             color: var(--text-primary);
             line-height: 1.6;
         }
         .check-icon {
             color: var(--accent-success);
             opacity: 0;
             transition: opacity 0.2s;
         }
         .translation-item.selected .check-icon,
         .variant-item.selected .check-icon {
             opacity: 1;
         }
         .toast {
             position: fixed;
             bottom: 24px;
@@ -436,12 +442,12 @@ HTML_TEMPLATE = """
             z-index: 1000;
             box-shadow: 0 10px 30px rgba(0,0,0,0.3);
         }
         .toast.show {
             transform: translateX(-50%) translateY(0);
             opacity: 1;
         }
         .loading {
             display: inline-block;
             width: 18px;
@@ -451,29 +457,43 @@ HTML_TEMPLATE = """
             border-top-color: white;
             animation: spin 0.8s linear infinite;
         }
         @keyframes spin {
             to { transform: rotate(360deg); }
         }
         .empty-state {
             text-align: center;
             padding: 60px 20px;
             color: var(--text-secondary);
         }
         .empty-state svg {
             width: 64px;
             height: 64px;
             margin-bottom: 16px;
             opacity: 0.5;
         }
         @media (max-width: 640px) {
             header h1 {
                 font-size: 1.75rem;
             }
             .variant-grid {
                 grid-template-columns: 1fr;
             }
@@ -486,14 +506,14 @@ HTML_TEMPLATE = """
             <h1>English → Kabyle</h1>
             <p>Choose the translation that suits you best</p>
         </header>
         <div class="input-card">
             <form method="POST" id="translateForm">
                 <div class="input-group">
-                    <textarea
-                        name="text"
                         id="inputText"
-                        placeholder="Enter English text to translate..."
                         required
                         autocomplete="off"
                     >{{ request.form.get('text', '') }}</textarea>
@@ -507,13 +527,13 @@ HTML_TEMPLATE = """
                 </div>
             </form>
         </div>
         {% if source_text %}
         <div class="source-display">
             <div class="source-label">Source Text</div>
             <div class="source-text">{{ source_text }}</div>
         </div>
         <div class="results-container">
             <!-- MarianMT Results -->
             <div class="engine-card">
@@ -542,7 +562,7 @@ HTML_TEMPLATE = """
                 {% endfor %}
                 </ul>
             </div>
             <!-- LibreTranslate Results -->
             <div class="engine-card">
                 <div class="engine-header">
@@ -590,13 +610,17 @@ HTML_TEMPLATE = """
             <p>Enter text above and click Translate to see results</p>
         </div>
         {% endif %}
     </div>
     <div class="toast" id="toast">Copied to clipboard!</div>
     <script>
         let selectedText = '';
         function selectTranslation(element, text) {
             element.parentElement.querySelectorAll('.translation-item').forEach(item => {
                 item.classList.remove('selected');
@@ -605,7 +629,7 @@ HTML_TEMPLATE = """
             selectedText = text;
             copyText(text, false);
         }
         function selectVariant(element, text) {
             document.querySelectorAll('.variant-item').forEach(item => {
                 item.classList.remove('selected');
@@ -614,7 +638,7 @@ HTML_TEMPLATE = """
             selectedText = text;
             copyText(text, false);
         }
         async function copyText(text, showToast = true) {
             try {
                 await navigator.clipboard.writeText(text);
@@ -633,14 +657,14 @@ HTML_TEMPLATE = """
                 }
             }
         }
         function showToastMessage(message) {
             const toast = document.getElementById('toast');
             toast.textContent = message;
             toast.classList.add('show');
             setTimeout(() => toast.classList.remove('show'), 2000);
         }
         document.getElementById('translateForm').addEventListener('submit', function() {
             const btn = document.getElementById('submitBtn');
             btn.disabled = true;
@@ -653,12 +677,13 @@ HTML_TEMPLATE = """
 app = Flask(__name__)
 @app.route("/", methods=["GET", "POST"])
 def index():
     marian = []
     libre = {}
     source_text = ""
     if request.method == "POST":
         source_text = request.form.get("text", "").strip()
         if source_text:
@@ -667,14 +692,88 @@ def index():
             for name, data in libre_results.items():
                 data['code'] = KABYLE_VARIANTS[name]
                 libre[name] = data
     return render_template_string(
-        HTML_TEMPLATE,
-        marian=marian,
         libre=libre,
         source_text=source_text
     )
 @app.route("/health")
 def health():
     return jsonify({
@@ -682,6 +781,7 @@ def health():
         "model_loaded": model is not None
     })
 if __name__ == "__main__":
     port = int(os.environ.get("PORT", 7860))
     app.run(host="0.0.0.0", port=port, debug=False)

 Kabyle Translation Hub - Hugging Face Spaces Edition
 Simple translation interface: MarianMT vs LibreTranslate
 Users choose their preferred translation - no metrics, no scores.
+Also exposes a JSON API for programmatic access.
 """
 import warnings
 tokenizer = None
 device = None
 def load_model():
     """Load MarianMT model once and cache it"""
     global model, tokenizer, device
     if model is None:
         print("Loading MarianMT model...")
         device = torch.device('cuda' if torch.cuda.is_available() else 'cpu')
         tokenizer = AutoTokenizer.from_pretrained(MODEL_ID, use_fast=False)
         model = AutoModelForSeq2SeqLM.from_pretrained(MODEL_ID).to(device).eval()
         print(f"Model loaded successfully on {device}")
     return model, tokenizer, device
 def translate_marian(text):
     """Translate using MarianMT with multiple alternatives"""
     if not text or not text.strip():
         return ["Please enter text to translate"]
     try:
         model, tokenizer, device = load_model()
         # Prepare inputs
         inputs = tokenizer(text, return_tensors='pt', padding=True, truncation=True, max_length=512)
         inputs = {k: v.to(device) for k, v in inputs.items()}
         with torch.no_grad():
             # Simple beam search without group beam search
             outputs = model.generate(
                 early_stopping=True,
                 do_sample=False,
             )
         translations = []
         for output in outputs:
             trans = tokenizer.decode(output, skip_special_tokens=True)
             if trans and trans not in translations:
                 translations.append(trans)
         return translations if translations else ["[Error: No translation generated]"]
     except Exception as e:
         print(f"MarianMT translation error: {e}")
         import traceback
         traceback.print_exc()
         return [f"[Error: {str(e)}]"]
 def translate_libre_variant(text, variant_code):
     """Translate using a specific LibreTranslate variant"""
     try:
     except Exception as e:
         return {"success": False, "text": f"[Error: {str(e)[:50]}]"}
 def translate_libre_all_variants(text):
     """Translate using all LibreTranslate variants in parallel"""
     results = {}
     with ThreadPoolExecutor(max_workers=4) as executor:
         future_to_name = {
+            executor.submit(translate_libre_variant, text, code): name
             for name, code in KABYLE_VARIANTS.items()
         }
         for future in as_completed(future_to_name, timeout=15):
                 results[name] = {"success": False, "text": f"[Error: {e}]"}
     return results
 HTML_TEMPLATE = """
 <!DOCTYPE html>
 <html lang="en">
             --radius: 12px;
             --radius-sm: 8px;
         }
         * { margin: 0; padding: 0; box-sizing: border-box; }
         body {
             font-family: system-ui, -apple-system, sans-serif;
             background: linear-gradient(135deg, var(--bg-primary) 0%, #1a1a2e 100%);
             min-height: 100vh;
             padding: 20px;
         }
         .container {
             max-width: 1000px;
             margin: 0 auto;
         }
         header {
             text-align: center;
             padding: 40px 20px;
         }
         header h1 {
             font-size: 2.5rem;
             font-weight: 800;
             -webkit-text-fill-color: transparent;
             margin-bottom: 10px;
         }
         header p {
             color: var(--text-secondary);
             font-size: 1.1rem;
         }
         .input-card {
             background: var(--bg-secondary);
             border-radius: var(--radius);
             margin-bottom: 24px;
             border: 1px solid var(--border);
         }
         .input-group {
             display: flex;
             flex-direction: column;
             gap: 16px;
         }
         textarea {
             width: 100%;
             padding: 16px;
             font-family: inherit;
             transition: border-color 0.2s;
         }
         textarea:focus {
             outline: none;
             border-color: var(--accent-primary);
         }
         textarea::placeholder {
             color: var(--text-secondary);
         }
         .btn-primary {
             background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
             color: white;
             justify-content: center;
             gap: 8px;
         }
         .btn-primary:hover {
             transform: translateY(-2px);
             box-shadow: 0 10px 30px rgba(99, 102, 241, 0.3);
         }
         .btn-primary:disabled {
             opacity: 0.6;
             cursor: not-allowed;
             transform: none;
         }
         .results-container {
             display: flex;
             flex-direction: column;
             gap: 20px;
         }
         .engine-card {
             background: var(--bg-secondary);
             border-radius: var(--radius);
             border: 1px solid var(--border);
             overflow: hidden;
         }
         .engine-header {
             padding: 20px 24px;
             background: var(--bg-tertiary);
             align-items: center;
             justify-content: space-between;
         }
         .engine-title {
             display: flex;
             align-items: center;
             font-size: 1.1rem;
             font-weight: 600;
         }
         .engine-badge {
             font-size: 0.75rem;
             padding: 4px 12px;
             color: var(--text-secondary);
             border: 1px solid var(--border);
         }
         .translation-list {
             list-style: none;
         }
         .translation-item {
             padding: 20px 24px;
             border-bottom: 1px solid var(--border);
             justify-content: space-between;
             gap: 16px;
         }
         .translation-item:last-child {
             border-bottom: none;
         }
         .translation-item:hover {
             background: rgba(99, 102, 241, 0.1);
         }
         .translation-item.selected {
             background: rgba(16, 185, 129, 0.15);
             border-left: 4px solid var(--accent-success);
         }
         .translation-text {
             flex: 1;
             font-size: 1.05rem;
             line-height: 1.6;
             color: var(--text-primary);
         }
         .copy-icon {
             opacity: 0;
             color: var(--accent-primary);
             transition: opacity 0.2s;
             flex-shrink: 0;
         }
         .translation-item:hover .copy-icon {
             opacity: 1;
         }
         .variant-grid {
             display: grid;
             grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
             gap: 1px;
             background: var(--border);
         }
         .variant-item {
             background: var(--bg-secondary);
             padding: 16px 20px;
             gap: 8px;
             position: relative;
         }
         .variant-item:hover {
             background: rgba(99, 102, 241, 0.1);
         }
         .variant-item.selected {
             background: rgba(16, 185, 129, 0.15);
             box-shadow: inset 4px 0 0 var(--accent-success);
         }
         .variant-header {
             display: flex;
             align-items: center;
             justify-content: space-between;
         }
         .variant-name {
             font-size: 0.75rem;
             color: var(--text-secondary);
             letter-spacing: 0.5px;
             font-weight: 600;
         }
         .variant-code {
             font-size: 0.7rem;
             color: var(--text-secondary);
             padding: 2px 8px;
             border-radius: 4px;
         }
         .variant-text {
             font-size: 1rem;
             color: var(--text-primary);
             line-height: 1.5;
         }
         .variant-item.error {
             opacity: 0.6;
         }
         .variant-item.error .variant-text {
             color: #ef4444;
             font-family: monospace;
             font-size: 0.85rem;
         }
         .source-display {
             background: var(--bg-tertiary);
             padding: 20px 24px;
             margin-bottom: 20px;
             border: 1px solid var(--border);
         }
         .source-label {
             font-size: 0.75rem;
             color: var(--text-secondary);
             letter-spacing: 0.5px;
             margin-bottom: 8px;
         }
         .source-text {
             font-size: 1.1rem;
             color: var(--text-primary);
             line-height: 1.6;
         }
         .check-icon {
             color: var(--accent-success);
             opacity: 0;
             transition: opacity 0.2s;
         }
         .translation-item.selected .check-icon,
         .variant-item.selected .check-icon {
             opacity: 1;
         }
         .toast {
             position: fixed;
             bottom: 24px;
             z-index: 1000;
             box-shadow: 0 10px 30px rgba(0,0,0,0.3);
         }
         .toast.show {
             transform: translateX(-50%) translateY(0);
             opacity: 1;
         }
         .loading {
             display: inline-block;
             width: 18px;
             border-top-color: white;
             animation: spin 0.8s linear infinite;
         }
         @keyframes spin {
             to { transform: rotate(360deg); }
         }
         .empty-state {
             text-align: center;
             padding: 60px 20px;
             color: var(--text-secondary);
         }
         .empty-state svg {
             width: 64px;
             height: 64px;
             margin-bottom: 16px;
             opacity: 0.5;
         }
+        .api-note {
+            text-align: center;
+            margin-top: 32px;
+            color: var(--text-secondary);
+            font-size: 0.85rem;
+        }
+        .api-note code {
+            background: var(--bg-tertiary);
+            padding: 2px 8px;
+            border-radius: 4px;
+            font-family: monospace;
+        }
         @media (max-width: 640px) {
             header h1 {
                 font-size: 1.75rem;
             }
             .variant-grid {
                 grid-template-columns: 1fr;
             }
             <h1>English → Kabyle</h1>
             <p>Choose the translation that suits you best</p>
         </header>
         <div class="input-card">
             <form method="POST" id="translateForm">
                 <div class="input-group">
+                    <textarea
+                        name="text"
                         id="inputText"
+                        placeholder="Enter English text to translate..."
                         required
                         autocomplete="off"
                     >{{ request.form.get('text', '') }}</textarea>
                 </div>
             </form>
         </div>
         {% if source_text %}
         <div class="source-display">
             <div class="source-label">Source Text</div>
             <div class="source-text">{{ source_text }}</div>
         </div>
         <div class="results-container">
             <!-- MarianMT Results -->
             <div class="engine-card">
                 {% endfor %}
                 </ul>
             </div>
             <!-- LibreTranslate Results -->
             <div class="engine-card">
                 <div class="engine-header">
             <p>Enter text above and click Translate to see results</p>
         </div>
         {% endif %}
+        <div class="api-note">
+            API available at <code>POST /api/translate</code> — see <code>/api/variants</code> for variant codes.
+        </div>
     </div>
     <div class="toast" id="toast">Copied to clipboard!</div>
     <script>
         let selectedText = '';
         function selectTranslation(element, text) {
             element.parentElement.querySelectorAll('.translation-item').forEach(item => {
                 item.classList.remove('selected');
             selectedText = text;
             copyText(text, false);
         }
         function selectVariant(element, text) {
             document.querySelectorAll('.variant-item').forEach(item => {
                 item.classList.remove('selected');
             selectedText = text;
             copyText(text, false);
         }
         async function copyText(text, showToast = true) {
             try {
                 await navigator.clipboard.writeText(text);
                 }
             }
         }
         function showToastMessage(message) {
             const toast = document.getElementById('toast');
             toast.textContent = message;
             toast.classList.add('show');
             setTimeout(() => toast.classList.remove('show'), 2000);
         }
         document.getElementById('translateForm').addEventListener('submit', function() {
             const btn = document.getElementById('submitBtn');
             btn.disabled = true;
 app = Flask(__name__)
 @app.route("/", methods=["GET", "POST"])
 def index():
     marian = []
     libre = {}
     source_text = ""
     if request.method == "POST":
         source_text = request.form.get("text", "").strip()
         if source_text:
             for name, data in libre_results.items():
                 data['code'] = KABYLE_VARIANTS[name]
                 libre[name] = data
     return render_template_string(
+        HTML_TEMPLATE,
+        marian=marian,
         libre=libre,
         source_text=source_text
     )
+@app.route("/api/translate", methods=["GET", "POST"])
+def api_translate():
+    """
+    JSON API for translation.
+    POST body (application/json):
+    {
+      "text": "Hello world",
+      "engines": ["marian", "libre"],   // optional, default both
+      "variants": ["kab", "kab_kab"]    // optional, default all LibreTranslate variants
+    }
+    GET query params (for quick testing):
+      /api/translate?text=Hello+world&engines=marian,libre
+    """
+    if request.method == "POST":
+        payload = request.get_json(silent=True) or {}
+        text = payload.get("text") or request.form.get("text", "")
+        engines = payload.get("engines") or ["marian", "libre"]
+        variant_filter = payload.get("variants")
+    else:
+        text = request.args.get("text", "")
+        engines_param = request.args.get("engines", "marian,libre")
+        engines = [e.strip() for e in engines_param.split(",") if e.strip()]
+        variants_param = request.args.get("variants")
+        variant_filter = [v.strip() for v in variants_param.split(",")] if variants_param else None
+    text = (text or "").strip()
+    if not text:
+        return jsonify({"error": "Missing 'text' parameter"}), 400
+    engines = [e.lower() for e in engines]
+    result = {"source_text": text}
+    if "marian" in engines:
+        result["marian"] = translate_marian(text)
+    if "libre" in engines:
+        variants_to_use = KABYLE_VARIANTS
+        if variant_filter:
+            variants_to_use = {
+                name: code for name, code in KABYLE_VARIANTS.items()
+                if code in variant_filter or name in variant_filter
+            }
+            if not variants_to_use:
+                return jsonify({"error": f"No matching variants for: {variant_filter}"}), 400
+        libre_results = {}
+        with ThreadPoolExecutor(max_workers=4) as executor:
+            future_to_name = {
+                executor.submit(translate_libre_variant, text, code): (name, code)
+                for name, code in variants_to_use.items()
+            }
+            for future in as_completed(future_to_name, timeout=15):
+                name, code = future_to_name[future]
+                try:
+                    data = future.result()
+                except Exception as e:
+                    data = {"success": False, "text": f"[Error: {e}]"}
+                data["code"] = code
+                libre_results[name] = data
+        result["libre"] = libre_results
+    return jsonify(result)
+@app.route("/api/variants", methods=["GET"])
+def api_variants():
+    """List available LibreTranslate Kabyle variants."""
+    return jsonify(KABYLE_VARIANTS)
 @app.route("/health")
 def health():
     return jsonify({
         "model_loaded": model is not None
     })
 if __name__ == "__main__":
     port = int(os.environ.get("PORT", 7860))
     app.run(host="0.0.0.0", port=port, debug=False)