feat: add AI model selector for social publisher content generation

3 models available: Gemini 3 Flash (default, cheap), Gemini 3 Pro
(best quality, 4x cost), Gemini 2.5 Flash (stable previous gen).
Model selection applies to both content and hashtag generation.
Shows which model was used after generation.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

blueprints/admin/routes_social_publisher.py

@@ -123,7 +123,7 @@ def social_publisher_list():
 @role_required(SystemRole.MANAGER)
 def social_publisher_new():
     """Tworzenie nowego posta."""
-    from services.social_publisher_service import social_publisher, POST_TYPES, POST_TONES, DEFAULT_TONE
+    from services.social_publisher_service import social_publisher, POST_TYPES, POST_TONES, DEFAULT_TONE, AI_MODELS, DEFAULT_AI_MODEL
 
     db = SessionLocal()
     try:
@@ -149,8 +149,8 @@ def social_publisher_new():
                 flash('Treść posta jest wymagana.', 'danger')
                 return render_template('admin/social_publisher_form.html',
                                        post=None, companies=companies, events=events,
-                                       post_types=POST_TYPES, post_tones=POST_TONES,
-                                       default_tone=DEFAULT_TONE,
+                                       post_types=POST_TYPES, post_tones=POST_TONES, default_tone=DEFAULT_TONE,
+                                       ai_models=AI_MODELS, default_ai_model=DEFAULT_AI_MODEL,
                                        configured_companies=configured_companies)
 
             post = social_publisher.create_post(
@@ -185,7 +185,7 @@ def social_publisher_new():
 @role_required(SystemRole.MANAGER)
 def social_publisher_edit(post_id):
     """Edycja istniejacego posta."""
-    from services.social_publisher_service import social_publisher, POST_TYPES, POST_TONES, DEFAULT_TONE
+    from services.social_publisher_service import social_publisher, POST_TYPES, POST_TONES, DEFAULT_TONE, AI_MODELS, DEFAULT_AI_MODEL
 
     db = SessionLocal()
     try:
@@ -238,8 +238,8 @@ def social_publisher_edit(post_id):
                 flash('Treść posta jest wymagana.', 'danger')
                 return render_template('admin/social_publisher_form.html',
                                        post=post, companies=companies, events=events,
-                                       post_types=POST_TYPES, post_tones=POST_TONES,
-                                       default_tone=DEFAULT_TONE,
+                                       post_types=POST_TYPES, post_tones=POST_TONES, default_tone=DEFAULT_TONE,
+                                       ai_models=AI_MODELS, default_ai_model=DEFAULT_AI_MODEL,
                                        configured_companies=configured_companies)
 
             social_publisher.update_post(
@@ -346,6 +346,7 @@ def social_publisher_generate():
     company_id = request.json.get('company_id')
     event_id = request.json.get('event_id')
     tone = request.json.get('tone', '')
+    ai_model = request.json.get('ai_model', '')
     custom_context = request.json.get('custom_context', {})
 
     try:
@@ -368,7 +369,7 @@ def social_publisher_generate():
         for key, default in defaults.items():
             context.setdefault(key, default)
 
-        content, hashtags, model = social_publisher.generate_content(post_type, context, tone=tone)
+        content, hashtags, model = social_publisher.generate_content(post_type, context, tone=tone, ai_model=ai_model)
         return jsonify({'success': True, 'content': content, 'hashtags': hashtags, 'model': model})
     except Exception as e:
         logger.error(f"AI generation failed: {e}")
@@ -384,12 +385,13 @@ def social_publisher_generate_hashtags():
 
     content = request.json.get('content', '').strip()
     post_type = request.json.get('post_type', '')
+    ai_model = request.json.get('ai_model', '')
 
     if not content:
         return jsonify({'success': False, 'error': 'Wpisz najpierw tresc posta, aby wygenerowac hashtagi.'}), 400
 
     try:
-        hashtags, model = social_publisher.generate_hashtags(content, post_type)
+        hashtags, model = social_publisher.generate_hashtags(content, post_type, ai_model=ai_model)
         return jsonify({'success': True, 'hashtags': hashtags, 'model': model})
     except Exception as e:
         logger.error(f"Hashtag generation failed: {e}")

services/social_publisher_service.py

@@ -117,6 +117,24 @@ Odpowiedz WYŁĄCZNIE tekstem postu, BEZ hashtagów.""",
 }
 
 
+AI_MODELS = {
+    '3-flash': {
+        'label': 'Gemini 3 Flash',
+        'description': 'Szybki, tani — dobry do większości postów',
+    },
+    '3-pro': {
+        'label': 'Gemini 3 Pro',
+        'description': 'Najwyższa jakość — lepszy styl i kreatywność (4x droższy)',
+    },
+    'flash': {
+        'label': 'Gemini 2.5 Flash',
+        'description': 'Poprzednia generacja — stabilny, sprawdzony',
+    },
+}
+
+DEFAULT_AI_MODEL = '3-flash'
+
+
 POST_TONES = {
     'professional': {
         'label': 'Profesjonalny',
@@ -452,13 +470,15 @@ class SocialPublisherService:
 
         return content, ' '.join(unique_tags)
 
-    def generate_content(self, post_type: str, context: dict, tone: str = None) -> Tuple[str, str, str]:
+    def generate_content(self, post_type: str, context: dict, tone: str = None,
+                         ai_model: str = None) -> Tuple[str, str, str]:
         """Generate post content using AI.
 
         Args:
             post_type: One of POST_TYPES keys
             context: Dict with template variables
             tone: One of POST_TONES keys (default: DEFAULT_TONE)
+            ai_model: One of AI_MODELS keys (default: DEFAULT_AI_MODEL)
 
         Returns:
             (content: str, hashtags: str, ai_model: str)
@@ -478,23 +498,30 @@ class SocialPublisherService:
         tone_info = POST_TONES[tone_key]
         prompt += f"\n\nTONACJA: {tone_info['instruction']}"
 
+        # Select model
+        model_key = ai_model if ai_model in AI_MODELS else DEFAULT_AI_MODEL
+
         # Generate with Gemini
         from gemini_service import generate_text
-        result = generate_text(prompt)
+        result = generate_text(prompt, model=model_key)
 
         if not result:
             raise RuntimeError("AI nie wygenerował treści. Spróbuj ponownie.")
 
         # Split out any hashtags AI may have included despite instructions
         content, hashtags = self._split_hashtags(result)
-        return content, hashtags, 'gemini-3-flash'
+        model_label = AI_MODELS[model_key]['label']
+        return content, hashtags, model_label
 
-    def generate_hashtags(self, content: str, post_type: str = '') -> Tuple[str, str]:
+    def generate_hashtags(self, content: str, post_type: str = '',
+                          ai_model: str = None) -> Tuple[str, str]:
         """Generate hashtags for given post content using AI.
 
         Returns:
-            (hashtags: str, ai_model: str)
+            (hashtags: str, ai_model_label: str)
         """
+        model_key = ai_model if ai_model in AI_MODELS else DEFAULT_AI_MODEL
+
         prompt = f"""Na podstawie poniższej treści posta na Facebook Izby Gospodarczej NORDA Biznes,
 wygeneruj 5-8 trafnych hashtagów.
 
@@ -509,14 +536,14 @@ Zasady:
 - Odpowiedz WYŁĄCZNIE hashtagami, nic więcej"""
 
         from gemini_service import generate_text
-        result = generate_text(prompt)
+        result = generate_text(prompt, model=model_key)
 
         if not result:
             raise RuntimeError("AI nie wygenerował hashtagów. Spróbuj ponownie.")
 
         # Clean up - ensure only hashtags
         tags = ' '.join(w for w in result.strip().split() if w.startswith('#'))
-        return tags, 'gemini-3-flash'
+        return tags, AI_MODELS[model_key]['label']
 
     def get_company_context(self, company_id: int) -> dict:
         """Get company data for AI prompt context."""

templates/admin/social_publisher_form.html

@@ -308,7 +308,7 @@
                 </div>
             </div>
 
-            <!-- Tonacja + Przycisk generowania AI -->
+            <!-- Tonacja + Model + Przycisk generowania AI -->
             <div class="form-group" style="display: flex; align-items: center; justify-content: flex-end; gap: var(--spacing-sm); flex-wrap: wrap;">
                 <label for="tone" style="margin: 0; white-space: nowrap;">Tonacja:</label>
                 <select id="tone" name="tone" style="width: auto; min-width: 160px; padding: var(--spacing-xs) var(--spacing-sm); border: 1px solid var(--border); border-radius: var(--radius-md); font-size: var(--font-size-sm);">
@@ -316,6 +316,12 @@
                     <option value="{{ key }}" {% if key == default_tone %}selected{% endif %}>{{ tone.label }}</option>
                     {% endfor %}
                 </select>
+                <label for="ai_model" style="margin: 0; white-space: nowrap;">Model:</label>
+                <select id="ai_model" name="ai_model" style="width: auto; min-width: 170px; padding: var(--spacing-xs) var(--spacing-sm); border: 1px solid var(--border); border-radius: var(--radius-md); font-size: var(--font-size-sm);">
+                    {% for key, model in ai_models.items() %}
+                    <option value="{{ key }}" {% if key == default_ai_model %}selected{% endif %} title="{{ model.description }}">{{ model.label }}</option>
+                    {% endfor %}
+                </select>
                 <button type="button" id="btn-generate-ai" class="btn btn-generate">
                     Generuj AI
                 </button>
@@ -347,8 +353,9 @@
 
             <!-- Info o silniku AI -->
             <div class="ai-engine-info">
-                Generowanie tresc i hashtagow: <strong>Google Gemini 3 Flash</strong> (model: gemini-3-flash-preview).
-                Obecnie jest to jedyny dostepny silnik AI. W przyszlosci planowane jest dodanie wyboru miedzy modelami (np. GPT, Claude).
+                Silnik AI: <strong>Google Gemini</strong>. Domyslny model (Gemini 3 Flash) jest szybki i tani.
+                Dla lepszej jakosci wybierz Gemini 3 Pro — lepsza kreatywnosc i styl, ale ~4x wyzszy koszt.
+                <span id="ai-model-used" style="display:none;"> Ostatnio uzyty: <strong id="ai-model-used-name"></strong></span>
             </div>
 
             <!-- Akcje -->
@@ -429,6 +436,7 @@
         const companyId = document.getElementById('company_id')?.value;
         const eventId = document.getElementById('event_id')?.value;
         const tone = document.getElementById('tone')?.value || '';
+        const aiModel = document.getElementById('ai_model')?.value || '';
 
         if (!postType) {
             showAiError('Wybierz typ posta przed generowaniem.');
@@ -460,6 +468,7 @@
                     company_id: companyId || null,
                     event_id: eventId || null,
                     tone: tone,
+                    ai_model: aiModel,
                     custom_context: customContext
                 })
             });
@@ -471,6 +480,10 @@
                 }
                 updateContentCounter();
                 hideAiError();
+                if (data.model) {
+                    document.getElementById('ai-model-used-name').textContent = data.model;
+                    document.getElementById('ai-model-used').style.display = 'inline';
+                }
             } else {
                 showAiError(data.error || 'Nie udalo sie wygenerowac tresci. Sprobuj ponownie.');
             }
@@ -506,7 +519,8 @@
                 },
                 body: JSON.stringify({
                     content: content,
-                    post_type: document.getElementById('post_type')?.value || ''
+                    post_type: document.getElementById('post_type')?.value || '',
+                    ai_model: document.getElementById('ai_model')?.value || ''
                 })
             });
             const data = await resp.json();