Cambios realizados v1.2.11 (Backend) + v1.3.8 (Frontend):

Backend v1.2.11:
Nueva Funcionalidad - Control de Generación de PDF:
Campo nuevo: generate_pdf en modelo Checklist (Boolean, default: True)
Lógica modificada: Al completar inspección se verifica si el checklist tiene habilitada la generación de PDF
Comportamiento:
Si generate_pdf = True → Se genera y guarda el PDF automáticamente
Si generate_pdf = False → No se genera PDF, pdf_url queda en NULL
Logs informativos: Muestra en consola si el PDF se generó o se omitió
Frontend v1.3.8:
Interfaz para Control de PDF:
Checkbox nuevo en modal de edición de checklist: "Generar PDF automáticamente al completar inspección"
Estado por defecto: Activado (mantiene comportamiento actual)
Persistencia: El valor se guarda en la base de datos al editar checklist
Dónde está:
Admin → Checklists → Click en "✏️ Editar" de cualquier checklist
Debajo del checkbox de "Habilitar sistema de puntuación"

backend/app/main.py

@@ -278,7 +278,7 @@ def extract_pdf_text_smart(pdf_content: bytes, max_chars: int = None) -> dict:
         }
 
 
-BACKEND_VERSION = "1.2.9"
+BACKEND_VERSION = "1.2.11"
 app = FastAPI(title="Checklist Inteligente API", version=BACKEND_VERSION)
 
 # S3/MinIO configuration
@@ -2049,54 +2049,30 @@ def generate_inspection_pdf(inspection_id: int, db: Session) -> str:
         
         # ===== LÓGICA ESPECIAL PARA AI_ASSISTANT =====
         if is_ai_assistant and ans.chat_history:
-            # Generar resumen estructurado del chat
+            # Mostrar resumen simple SIN generar con IA (para evitar lentitud y peso)
-            import asyncio
             try:
-                # Ejecutar función async de forma sincrónica
+                chat_data = ans.chat_history if isinstance(ans.chat_history, list) else json.loads(ans.chat_history)
-                loop = asyncio.new_event_loop()
+                total_messages = len(chat_data)
-                asyncio.set_event_loop(loop)
+                user_messages = sum(1 for m in chat_data if m.get('role') == 'user')
-                chat_summary = loop.run_until_complete(
+                assistant_messages = sum(1 for m in chat_data if m.get('role') == 'assistant')
-                    generate_chat_summary(ans.chat_history, question.text)
-                )
-                loop.close()
                 
-                # Renderizar informe narrativo
                 question_data.append([
-                    Paragraph(f"<b>💬 INFORME DE DIAGNÓSTICO ASISTIDO</b>", 
+                    Paragraph(f"<b>💬 DIAGNÓSTICO ASISTIDO POR IA</b>", 
                               ParagraphStyle('chat_title', parent=answer_style, fontSize=11, 
                                            textColor=colors.HexColor('#2563eb'), fontName='Helvetica-Bold'))
                 ])
                 
-                # Problema identificado
                 question_data.append([
-                    Paragraph(f"<b>🔍 Problema Identificado:</b><br/>{chat_summary.get('problema_identificado', 'N/A')}", 
+                    Paragraph(f"<b>📊 Resumen de Conversación:</b><br/>"
+                             f"• Total de mensajes: {total_messages}<br/>"
+                             f"• Consultas del mecánico: {user_messages}<br/>"
+                             f"• Respuestas del asistente: {assistant_messages}<br/><br/>"
+                             f"<i>Nota: El historial completo está disponible en el sistema para administradores.</i>", 
                               comment_style)
                 ])
                 
-                # Hallazgos
-                if chat_summary.get('hallazgos') and len(chat_summary['hallazgos']) > 0:
-                    hallazgos_text = "<br/>".join([f"• {h}" for h in chat_summary['hallazgos']])
-                    question_data.append([
-                        Paragraph(f"<b>📋 Hallazgos:</b><br/>{hallazgos_text}", comment_style)
-                    ])
-                
-                # Diagnóstico
-                question_data.append([
-                    Paragraph(f"<b>🔧 Diagnóstico:</b><br/>{chat_summary.get('diagnostico', 'N/A')}", 
-                              comment_style)
-                ])
-                
-                # Recomendaciones
-                if chat_summary.get('recomendaciones') and len(chat_summary['recomendaciones']) > 0:
-                    recomendaciones_text = "<br/>".join([f"• {r}" for r in chat_summary['recomendaciones']])
-                    question_data.append([
-                        Paragraph(f"<b>✅ Recomendaciones:</b><br/>{recomendaciones_text}", 
-                                  ParagraphStyle('recommendations', parent=comment_style, 
-                                               textColor=colors.HexColor('#16a34a')))
-                    ])
-                
             except Exception as e:
-                print(f"❌ Error generando resumen de chat en PDF: {e}")
+                print(f"❌ Error procesando chat en PDF: {e}")
                 # Fallback: mostrar que hubo conversación
                 question_data.append([
                     Table([
@@ -2284,9 +2260,15 @@ def complete_inspection(
     inspection.status = "completed"
     inspection.completed_at = datetime.utcnow()
 
-    # Generar PDF usando función reutilizable
+    # Generar PDF solo si el checklist lo tiene habilitado
-    pdf_url = generate_inspection_pdf(inspection_id, db)
+    if inspection.checklist.generate_pdf:
-    inspection.pdf_url = pdf_url
+        pdf_url = generate_inspection_pdf(inspection_id, db)
+        inspection.pdf_url = pdf_url
+        print(f"✅ PDF generado para inspección #{inspection_id}")
+    else:
+        inspection.pdf_url = None
+        print(f"⏭️ PDF NO generado (deshabilitado en checklist) para inspección #{inspection_id}")
+    
     db.commit()
     db.refresh(inspection)
     

backend/app/models.py

@@ -47,6 +47,7 @@ class Checklist(Base):
     scoring_enabled = Column(Boolean, default=True)
     max_score = Column(Integer, default=0)
     logo_url = Column(String(500))
+    generate_pdf = Column(Boolean, default=True)  # Controla si se genera PDF al completar
     is_active = Column(Boolean, default=True)
     created_by = Column(Integer, ForeignKey("users.id"))
     created_at = Column(DateTime(timezone=True), server_default=func.now())

backend/app/schemas.py

@@ -71,6 +71,7 @@ class ChecklistBase(BaseModel):
     ai_mode: str = "off"
     scoring_enabled: bool = True
     logo_url: Optional[str] = None
+    generate_pdf: bool = True
 
 class ChecklistCreate(ChecklistBase):
     mechanic_ids: Optional[List[int]] = []  # IDs de mecánicos autorizados
@@ -81,12 +82,14 @@ class ChecklistUpdate(BaseModel):
     ai_mode: Optional[str] = None
     scoring_enabled: Optional[bool] = None
     logo_url: Optional[str] = None
+    generate_pdf: Optional[bool] = None
     is_active: Optional[bool] = None
     mechanic_ids: Optional[List[int]] = None  # IDs de mecánicos autorizados
 
 class Checklist(ChecklistBase):
     id: int
     max_score: int
+    generate_pdf: bool
     is_active: bool
     created_by: int
     created_at: datetime

frontend/package.json

@@ -1,7 +1,7 @@
 {
   "name": "checklist-frontend",
   "private": true,
-  "version": "1.3.6",
+  "version": "1.3.8",
   "type": "module",
   "scripts": {
     "dev": "vite",

frontend/public/service-worker.js

@@ -1,6 +1,6 @@
 // Service Worker para PWA con detección de actualizaciones
 // IMPORTANTE: Actualizar esta versión cada vez que se despliegue una nueva versión
-const CACHE_NAME = 'ayutec-v1.3.6';
+const CACHE_NAME = 'ayutec-v1.3.8';
 const urlsToCache = [
   '/',
   '/index.html'

frontend/src/App.jsx

@@ -2302,7 +2302,8 @@ function ChecklistsTab({ checklists, user, onChecklistCreated, onStartInspection
     name: '',
     description: '',
     ai_mode: 'off',
-    scoring_enabled: true
+    scoring_enabled: true,
+    generate_pdf: true
   })
   const [editPermissionsData, setEditPermissionsData] = useState({
     mechanic_ids: []
@@ -2673,7 +2674,8 @@ function ChecklistsTab({ checklists, user, onChecklistCreated, onStartInspection
                           name: checklist.name,
                           description: checklist.description || '',
                           ai_mode: checklist.ai_mode || 'off',
-                          scoring_enabled: checklist.scoring_enabled ?? true
+                          scoring_enabled: checklist.scoring_enabled ?? true,
+                          generate_pdf: checklist.generate_pdf ?? true
                         })
                         setShowEditChecklistModal(true)
                       }}
@@ -3049,6 +3051,18 @@ function ChecklistsTab({ checklists, user, onChecklistCreated, onStartInspection
                   </label>
                 </div>
 
+                <div className="flex items-center">
+                  <input
+                    type="checkbox"
+                    checked={editChecklistData.generate_pdf !== false}
+                    onChange={(e) => setEditChecklistData({ ...editChecklistData, generate_pdf: e.target.checked })}
+                    className="w-4 h-4 text-indigo-600 border-gray-300 rounded focus:ring-indigo-500"
+                  />
+                  <label className="ml-2 text-sm text-gray-700">
+                    Generar PDF automáticamente al completar inspección
+                  </label>
+                </div>
+
                 <div className="bg-blue-50 border border-blue-200 rounded-lg p-4">
                   <p className="text-sm text-blue-800">
                     ℹ️ Los cambios se aplicarán inmediatamente. Las inspecciones existentes no se verán afectadas.
@@ -3061,7 +3075,7 @@ function ChecklistsTab({ checklists, user, onChecklistCreated, onStartInspection
                     onClick={() => {
                       setShowEditChecklistModal(false)
                       setSelectedChecklist(null)
-                      setEditChecklistData({ name: '', description: '', ai_mode: 'off', scoring_enabled: true })
+                      setEditChecklistData({ name: '', description: '', ai_mode: 'off', scoring_enabled: true, generate_pdf: true })
                     }}
                     className="flex-1 px-4 py-2 border border-gray-300 text-gray-700 rounded-lg hover:bg-gray-50 transition"
                     disabled={updating}
@@ -3264,6 +3278,9 @@ function InspectionDetailModal({ inspection, user, onClose, onUpdate, onContinue
   const [showAuditLog, setShowAuditLog] = useState(false)
   const [auditLogs, setAuditLogs] = useState([])
   const [loadingAudit, setLoadingAudit] = useState(false)
+  const [showChatHistory, setShowChatHistory] = useState(false)
+  const [selectedChatHistory, setSelectedChatHistory] = useState(null)
+  const [selectedQuestionText, setSelectedQuestionText] = useState('')
 
   // Función helper para convertir valores técnicos a etiquetas legibles
   const getReadableAnswer = (answerValue, questionOptions) => {
@@ -3698,6 +3715,37 @@ function InspectionDetailModal({ inspection, user, onClose, onUpdate, onContinue
                                             </div>
                                           )}
 
+                                          {/* Chat History - SOLO PARA ADMINS */}
+                                          {user?.role === 'admin' && answer.chat_history && (
+                                            <div className="bg-blue-50 border border-blue-200 rounded p-3 mt-2">
+                                              <div className="flex items-center justify-between">
+                                                <span className="text-xs text-blue-800 font-semibold">💬 Historial de Chat IA</span>
+                                                <button
+                                                  onClick={() => {
+                                                    setSelectedChatHistory(answer.chat_history)
+                                                    setSelectedQuestionText(question.text)
+                                                    setShowChatHistory(true)
+                                                  }}
+                                                  className="px-2 py-1 bg-blue-600 text-white rounded hover:bg-blue-700 text-xs"
+                                                >
+                                                  Ver Conversación
+                                                </button>
+                                              </div>
+                                              <div className="text-xs text-blue-700 mt-1">
+                                                {(() => {
+                                                  try {
+                                                    const chatData = typeof answer.chat_history === 'string' 
+                                                      ? JSON.parse(answer.chat_history) 
+                                                      : answer.chat_history
+                                                    return `${chatData.length} mensajes`
+                                                  } catch {
+                                                    return 'Historial disponible'
+                                                  }
+                                                })()}
+                                              </div>
+                                            </div>
+                                          )}
+
                                           {/* Photos - NUEVO: miniaturas de media_files */}
                                           {(answer.media_files && answer.media_files.length > 0) && (
                                             <div className="flex gap-2 flex-wrap mt-2">
@@ -4018,6 +4066,88 @@ function InspectionDetailModal({ inspection, user, onClose, onUpdate, onContinue
           </div>
         </div>
       )}
+
+      {/* Modal de Historial de Chat */}
+      {showChatHistory && selectedChatHistory && (
+        <div className="fixed inset-0 bg-black bg-opacity-50 flex items-center justify-center z-[60] p-4">
+          <div className="bg-white rounded-lg max-w-4xl w-full max-h-[90vh] flex flex-col">
+            <div className="bg-gradient-to-r from-blue-600 to-purple-600 text-white p-4">
+              <div className="flex justify-between items-start">
+                <div>
+                  <h3 className="text-xl font-bold">💬 Historial de Chat IA</h3>
+                  <p className="text-sm opacity-90 mt-1">{selectedQuestionText}</p>
+                </div>
+                <button
+                  onClick={() => setShowChatHistory(false)}
+                  className="text-white hover:bg-white hover:bg-opacity-20 rounded-lg p-2 transition"
+                >
+                  ✕
+                </button>
+              </div>
+            </div>
+
+            <div className="flex-1 overflow-y-auto p-4 space-y-3">
+              {(() => {
+                try {
+                  const chatData = typeof selectedChatHistory === 'string' 
+                    ? JSON.parse(selectedChatHistory) 
+                    : selectedChatHistory
+                  
+                  return chatData.map((msg, idx) => (
+                    <div
+                      key={idx}
+                      className={`flex ${msg.role === 'user' ? 'justify-end' : 'justify-start'}`}
+                    >
+                      <div
+                        className={`max-w-[80%] rounded-lg p-3 ${
+                          msg.role === 'user'
+                            ? 'bg-blue-600 text-white'
+                            : 'bg-gray-100 text-gray-800 border border-gray-200'
+                        }`}
+                      >
+                        <div className="flex items-center gap-2 mb-1">
+                          <span className="text-xs font-semibold opacity-75">
+                            {msg.role === 'user' ? '👤 Mecánico' : '🤖 Asistente IA'}
+                          </span>
+                          <span className="text-xs opacity-60">
+                            {new Date(msg.timestamp).toLocaleTimeString('es-ES', {
+                              hour: '2-digit',
+                              minute: '2-digit'
+                            })}
+                          </span>
+                        </div>
+                        <div className="text-sm whitespace-pre-wrap break-words">
+                          {msg.content}
+                        </div>
+                        {msg.confidence && (
+                          <div className="text-xs mt-2 opacity-75">
+                            Confianza: {Math.round(msg.confidence * 100)}%
+                          </div>
+                        )}
+                      </div>
+                    </div>
+                  ))
+                } catch (error) {
+                  return (
+                    <div className="text-center text-red-600">
+                      Error al cargar el historial de chat
+                    </div>
+                  )
+                }
+              })()}
+            </div>
+
+            <div className="border-t p-4 bg-gray-50">
+              <button
+                onClick={() => setShowChatHistory(false)}
+                className="w-full px-4 py-2 bg-gray-600 text-white rounded-lg hover:bg-gray-700 transition"
+              >
+                Cerrar
+              </button>
+            </div>
+          </div>
+        </div>
+      )}
     </div>
   )
 }

frontend/src/Sidebar.jsx

@@ -153,7 +153,7 @@ export default function Sidebar({ user, activeTab, setActiveTab, sidebarOpen, se
                 className="w-10 h-10 object-contain bg-white rounded p-1"
               />
               <p className="text-xs text-indigo-300 font-medium hover:text-indigo-200">
-                Ayutec v1.3.6
+                Ayutec v1.3.8
               </p>
             </a>
           </div>

migrations/add_generate_pdf_to_checklists.sql

@@ -0,0 +1,13 @@
+-- Agregar campo generate_pdf a la tabla checklists
+-- Este campo controla si se genera PDF automáticamente al completar una inspección
+
+ALTER TABLE checklists 
+ADD COLUMN IF NOT EXISTS generate_pdf BOOLEAN DEFAULT TRUE;
+
+-- Actualizar checklists existentes para que generen PDF por defecto
+UPDATE checklists 
+SET generate_pdf = TRUE 
+WHERE generate_pdf IS NULL;
+
+-- Comentario para documentación
+COMMENT ON COLUMN checklists.generate_pdf IS 'Controla si se genera PDF automáticamente al completar inspección';