feat(dashboard): agregar panel de versiones y corregir carga de transcripciones

- Corregir endpoints /api/transcription y /api/summary para manejar filenames con extensión
- Agregar endpoint /api/versions para listar archivos generados
- Agregar tab 'Versiones' en panel lateral con lista de archivos
- Mejorar modal de progreso con barra animada y estados
- Cambiar archivos para que se abran en pestaña en lugar de descargarse
- Agregar botón 'Regenerar' en lista de archivos procesados

api/routes.py

@@ -2,6 +2,7 @@
 Flask API routes for CBCFacil dashboard
 """
 import os
+import time
 from datetime import datetime
 from pathlib import Path
 from typing import Dict, Any, List
@@ -9,14 +10,20 @@ from flask import Flask, render_template, request, jsonify, send_from_directory
 from flask_cors import CORS
 
 from config import settings
-from storage import processed_registry
+from storage.processed_registry import processed_registry
 from services.webdav_service import webdav_service
 from services import vram_manager
+from document.generators import DocumentGenerator
 
 
 def create_app() -> Flask:
     """Create and configure Flask application"""
-    app = Flask(__name__)
+    # Get the project root directory (parent of api/)
+    current_dir = Path(__file__).parent
+    project_root = current_dir.parent
+    template_dir = project_root / 'templates'
+
+    app = Flask(__name__, template_folder=str(template_dir))
     CORS(app)
 
     # Configure app
@@ -157,6 +164,60 @@ def create_app() -> Flask:
             app.logger.error(f"Error downloading file: {e}")
             return jsonify({'error': 'File not found'}), 404
 
+    @app.route('/downloads/find-file')
+    def find_and_download_file():
+        """Find and download file with various name variants"""
+        try:
+            filename = request.args.get('filename', '')
+            ext = request.args.get('ext', 'txt')
+            
+            if not filename:
+                return jsonify({'error': 'Filename required'}), 400
+            
+            # Validate to prevent path traversal
+            if '..' in filename or filename.startswith('/'):
+                return jsonify({'error': 'Invalid filename'}), 400
+            
+            # Try various name variants
+            base_name = filename.replace('_unificado', '').replace('_unified', '')
+            name_variants = [
+                f"{base_name}.{ext}",
+                f"{base_name}_unificado.{ext}",
+                f"{base_name}_unified.{ext}",
+                f"{base_name.replace(' ', '_')}.{ext}",
+                f"{base_name.replace(' ', '_')}_unificado.{ext}",
+            ]
+            
+            # Directories to search
+            directories = [
+                settings.LOCAL_DOWNLOADS_PATH,
+                settings.LOCAL_DOCX
+            ]
+            
+            # Search for file
+            for directory in directories:
+                if not directory.exists():
+                    continue
+                for variant in name_variants:
+                    file_path = directory / variant
+                    if file_path.exists():
+                        # Determinar mimetype para que se abra en el navegador
+                        mimetype = None
+                        if ext == 'pdf':
+                            mimetype = 'application/pdf'
+                        elif ext == 'md':
+                            mimetype = 'text/markdown'
+                        elif ext == 'txt':
+                            mimetype = 'text/plain'
+                        # as_attachment=False para abrir en navegador, no descargar
+                        return send_from_directory(str(directory), variant, as_attachment=False, mimetype=mimetype)
+            
+            return jsonify({'error': f'File not found: {filename}.{ext}'}), 404
+            
+        except Exception as e:
+            app.logger.error(f"Error finding file: {e}")
+            return jsonify({'error': 'File not found'}), 404
+
     @app.route('/health')
     def health_check():
         """Health check endpoint"""
@@ -174,11 +235,316 @@ def create_app() -> Flask:
             }
         })
 
+    @app.route('/api/transcription/<filename>')
+    def get_transcription(filename: str):
+        """Get transcription content for a specific file"""
+        try:
+            # Validate filename to prevent path traversal
+            if '..' in filename or filename.startswith('/'):
+                return jsonify({
+                    'success': False,
+                    'message': 'Invalid filename'
+                }), 400
+
+            # Extract base name without extension (handle .mp3, .wav, .txt, etc.)
+            base_name = Path(filename).stem
+            
+            # Construct file path for transcription
+            file_path = settings.LOCAL_DOWNLOADS_PATH / f"{base_name}.txt"
+
+            # Check if file exists
+            if not file_path.exists():
+                return jsonify({
+                    'success': False,
+                    'message': f'Transcription file not found: {base_name}.txt'
+                }), 404
+
+            # Read file content
+            with open(file_path, 'r', encoding='utf-8') as f:
+                transcription_text = f.read()
+
+            # Calculate statistics
+            word_count = len(transcription_text.split())
+            char_count = len(transcription_text)
+
+            return jsonify({
+                'success': True,
+                'filename': filename,
+                'transcription': transcription_text,
+                'file_path': str(file_path),
+                'word_count': word_count,
+                'char_count': char_count
+            })
+
+        except Exception as e:
+            app.logger.error(f"Error reading transcription: {e}")
+            return jsonify({
+                'success': False,
+                'message': f"Error reading transcription: {str(e)}"
+            }), 500
+
+    @app.route('/api/summary/<filename>')
+    def get_summary(filename: str):
+        """Get summary content for a specific file"""
+        try:
+            # Validate filename to prevent path traversal
+            if '..' in filename or filename.startswith('/'):
+                return jsonify({
+                    'success': False,
+                    'message': 'Invalid filename'
+                }), 400
+
+            # Extract base name without extension (handle .mp3, .wav, etc.)
+            base_name = Path(filename).stem
+            # Also remove _unificado/_unified suffixes if present
+            base_name = base_name.replace('_unificado', '').replace('_unified', '')
+
+            # Try different file path variants
+            possible_paths = [
+                settings.LOCAL_DOWNLOADS_PATH / f"{base_name}_unificado.md",
+                settings.LOCAL_DOWNLOADS_PATH / f"{base_name}_unified.md",
+                settings.LOCAL_DOWNLOADS_PATH / f"{base_name}.md",
+            ]
+
+            file_path = None
+            for path in possible_paths:
+                if path.exists():
+                    file_path = path
+                    break
+
+            if not file_path:
+                return jsonify({
+                    'success': False,
+                    'message': f'Summary file not found for: {filename}'
+                }), 404
+
+            # Read file content
+            with open(file_path, 'r', encoding='utf-8') as f:
+                summary_text = f.read()
+
+            # Get available formats
+            formats_available = get_available_formats(base_name)
+
+            return jsonify({
+                'success': True,
+                'filename': base_name,
+                'summary': summary_text,
+                'file_path': str(file_path),
+                'formats_available': formats_available
+            })
+
+        except Exception as e:
+            app.logger.error(f"Error reading summary: {e}")
+            return jsonify({
+                'success': False,
+                'message': f"Error reading summary: {str(e)}"
+            }), 500
+
+    @app.route('/api/versions/<filename>')
+    def get_versions(filename: str):
+        """Get all summary versions for a file"""
+        try:
+            # Validate filename
+            if '..' in filename or filename.startswith('/'):
+                return jsonify({'success': False, 'message': 'Invalid filename'}), 400
+            
+            # Extract base name
+            base_name = Path(filename).stem
+            base_name = base_name.replace('_unificado', '').replace('_unified', '')
+            
+            versions = []
+            downloads_path = settings.LOCAL_DOWNLOADS_PATH
+            docx_path = settings.LOCAL_DOCX
+            
+            # Check for transcription (original)
+            txt_path = downloads_path / f"{base_name}.txt"
+            if txt_path.exists():
+                stat = txt_path.stat()
+                versions.append({
+                    'type': 'transcription',
+                    'label': '📝 Transcripción Original',
+                    'filename': txt_path.name,
+                    'path': f"/downloads/find-file?filename={base_name}&ext=txt",
+                    'date': datetime.fromtimestamp(stat.st_mtime).strftime('%Y-%m-%d %H:%M'),
+                    'size': f"{stat.st_size / 1024:.1f} KB"
+                })
+            
+            # Check for summary versions (md, docx, pdf)
+            summary_patterns = [
+                (f"{base_name}_unificado.md", "📋 Resumen MD"),
+                (f"{base_name}_unificado.docx", "📄 Documento DOCX"),
+                (f"{base_name}_unificado.pdf", "📑 PDF"),
+            ]
+            
+            for pattern, label in summary_patterns:
+                # Check downloads path
+                file_path = downloads_path / pattern
+                if not file_path.exists():
+                    file_path = docx_path / pattern
+                
+                if file_path.exists():
+                    stat = file_path.stat()
+                    ext = file_path.suffix[1:]  # Remove the dot
+                    versions.append({
+                        'type': 'summary',
+                        'label': label,
+                        'filename': pattern,
+                        'path': f"/downloads/find-file?filename={base_name}&ext={ext}",
+                        'date': datetime.fromtimestamp(stat.st_mtime).strftime('%Y-%m-%d %H:%M'),
+                        'size': f"{stat.st_size / 1024:.1f} KB"
+                    })
+            
+            # Sort by date descending
+            versions.sort(key=lambda x: x['date'], reverse=True)
+            
+            return jsonify({
+                'success': True,
+                'base_name': base_name,
+                'versions': versions,
+                'count': len(versions)
+            })
+            
+        except Exception as e:
+            app.logger.error(f"Error getting versions: {e}")
+            return jsonify({'success': False, 'message': str(e)}), 500
+
+    @app.route('/api/regenerate-summary', methods=['POST'])
+    def regenerate_summary():
+        """Regenerate summary from existing transcription"""
+        start_time = time.time()
+
+        try:
+            data = request.get_json()
+            filename = data.get('filename')
+            custom_prompt = data.get('custom_prompt')
+
+            if not filename:
+                return jsonify({
+                    'success': False,
+                    'message': 'Filename is required'
+                }), 400
+
+            # Validate filename to prevent path traversal
+            if '..' in filename or filename.startswith('/'):
+                return jsonify({
+                    'success': False,
+                    'message': 'Invalid filename'
+                }), 400
+
+            # Get base name (remove extension if present)
+            base_name = Path(filename).stem
+
+            # Read transcription from .txt file
+            transcription_path = settings.LOCAL_DOWNLOADS_PATH / f"{base_name}.txt"
+
+            if not transcription_path.exists():
+                # Try without .txt extension if already included
+                transcription_path = settings.LOCAL_DOWNLOADS_PATH / filename
+                if not transcription_path.exists():
+                    return jsonify({
+                        'success': False,
+                        'message': f'Transcription file not found for: {filename}'
+                    }), 404
+
+            with open(transcription_path, 'r', encoding='utf-8') as f:
+                transcription_text = f.read()
+
+            # Generate new summary using DocumentGenerator
+            doc_generator = DocumentGenerator()
+            success, new_summary, metadata = doc_generator.generate_summary(
+                transcription_text,
+                base_name
+            )
+
+            if not success:
+                return jsonify({
+                    'success': False,
+                    'message': 'Failed to generate summary'
+                }), 500
+
+            # Upload to WebDAV if configured
+            files_updated = []
+            if settings.has_webdav_config:
+                try:
+                    # Upload markdown
+                    if 'markdown_path' in metadata:
+                        md_path = Path(metadata['markdown_path'])
+                        if md_path.exists():
+                            remote_md_path = f"{settings.REMOTE_TXT_FOLDER}/{md_path.name}"
+                            webdav_service.upload(str(md_path), remote_md_path)
+                            files_updated.append(remote_md_path)
+
+                    # Upload DOCX
+                    if 'docx_path' in metadata:
+                        docx_path = Path(metadata['docx_path'])
+                        if docx_path.exists():
+                            remote_docx_path = f"{settings.DOCX_FOLDER}/{docx_path.name}"
+                            webdav_service.upload(str(docx_path), remote_docx_path)
+                            files_updated.append(remote_docx_path)
+
+                    # Upload PDF if available
+                    if 'pdf_path' in metadata:
+                        pdf_path = Path(metadata['pdf_path'])
+                        if pdf_path.exists():
+                            remote_pdf_path = f"{settings.REMOTE_PDF_FOLDER}/{pdf_path.name}"
+                            webdav_service.upload(str(pdf_path), remote_pdf_path)
+                            files_updated.append(remote_pdf_path)
+
+                except Exception as e:
+                    app.logger.warning(f"WebDAV upload failed: {e}")
+                    # Continue even if upload fails
+
+            processing_time = time.time() - start_time
+
+            return jsonify({
+                'success': True,
+                'message': 'Summary regenerated successfully',
+                'new_summary': new_summary,
+                'files_updated': files_updated,
+                'processing_time': f"{processing_time:.2f}s",
+                'metadata': metadata
+            })
+
+        except Exception as e:
+            app.logger.error(f"Error regenerating summary: {e}")
+            return jsonify({
+                'success': False,
+                'message': f"Error regenerating summary: {str(e)}"
+            }), 500
+
+    @app.route('/api/files-detailed')
+    def get_files_detailed():
+        """Get detailed list of files with transcription and summary info"""
+        try:
+            files = get_audio_files_detailed()
+
+            # Calculate statistics
+            total = len(files)
+            with_transcription = sum(1 for f in files if f['has_transcription'])
+            with_summary = sum(1 for f in files if f['has_summary'])
+
+            return jsonify({
+                'success': True,
+                'files': files,
+                'total': total,
+                'with_transcription': with_transcription,
+                'with_summary': with_summary
+            })
+
+        except Exception as e:
+            app.logger.error(f"Error getting detailed files: {e}")
+            return jsonify({
+                'success': False,
+                'message': f"Error: {str(e)}"
+            }), 500
+
     return app
 
 
 def get_audio_files() -> List[Dict[str, Any]]:
     """Get list of audio files from WebDAV and local"""
+    import logging
+    logger = logging.getLogger(__name__)
     files = []
 
     # Get files from WebDAV
@@ -202,7 +568,7 @@ def get_audio_files() -> List[Dict[str, Any]]:
                         'available_formats': get_available_formats(base_name)
                     })
         except Exception as e:
-            app.logger.error(f"Error getting WebDAV files: {e}")
+            logger.warning(f"Error getting WebDAV files: {e}")
 
     # Get local files
     try:
@@ -222,13 +588,113 @@ def get_audio_files() -> List[Dict[str, Any]]:
                         'available_formats': get_available_formats(file_path.name)
                     })
     except Exception as e:
-        app.logger.error(f"Error getting local files: {e}")
+        logger.error(f"Error getting local files: {e}")
 
-    # Remove duplicates (WebDAV takes precedence)
+    # Remove duplicates (keep both local and webdav - distinguish by source)
     unique_files = {}
     for file in files:
-        key = file['filename']
-        if key not in unique_files or file['source'] == 'webdav':
+        # Use (filename, source) as key to keep both local and webdav files
+        key = (file['filename'], file['source'])
+        unique_files[key] = file
+
+    return sorted(unique_files.values(), key=lambda x: (x['source'], x['filename']))
+
+
+def get_audio_files_detailed() -> List[Dict[str, Any]]:
+    """Get detailed list of audio files with transcription and summary information"""
+    files = []
+
+    # Get local audio files only for detailed view
+    try:
+        if settings.LOCAL_DOWNLOADS_PATH.exists():
+            for ext in settings.AUDIO_EXTENSIONS:
+                for file_path in settings.LOCAL_DOWNLOADS_PATH.glob(f"*{ext}"):
+                    stat = file_path.stat()
+                    filename = file_path.name
+                    base_name = file_path.stem
+
+                    # Check for transcription
+                    transcription_path = settings.LOCAL_DOWNLOADS_PATH / f"{base_name}.txt"
+                    has_transcription = transcription_path.exists()
+                    transcription_words = 0
+
+                    if has_transcription:
+                        try:
+                            with open(transcription_path, 'r', encoding='utf-8') as f:
+                                transcription_text = f.read()
+                                transcription_words = len(transcription_text.split())
+                        except Exception:
+                            pass
+
+                    # Check for summary and formats
+                    formats = get_available_formats(filename)
+                    has_summary = formats.get('md', False)
+
+                    # Get summary path
+                    summary_path = None
+                    if has_summary:
+                        summary_variants = [
+                            settings.LOCAL_DOWNLOADS_PATH / f"{base_name}_unificado.md",
+                            settings.LOCAL_DOWNLOADS_PATH / f"{base_name}_unified.md",
+                            settings.LOCAL_DOWNLOADS_PATH / f"{base_name}.md",
+                        ]
+                        for variant in summary_variants:
+                            if variant.exists():
+                                summary_path = str(variant)
+                                break
+
+                    files.append({
+                        'filename': filename,
+                        'base_name': base_name,
+                        'audio_path': str(file_path),
+                        'has_transcription': has_transcription,
+                        'transcription_path': str(transcription_path) if has_transcription else None,
+                        'transcription_words': transcription_words,
+                        'has_summary': has_summary,
+                        'summary_path': summary_path,
+                        'formats': formats,
+                        'processed': processed_registry.is_processed(filename),
+                        'last_modified': datetime.fromtimestamp(stat.st_mtime).strftime('%Y-%m-%d %H:%M:%S'),
+                        'size': format_size(stat.st_size)
+                    })
+    except Exception as e:
+        pass  # Error logged in endpoint
+
+    # Get WebDAV files
+    if settings.has_webdav_config:
+        try:
+            webdav_files = webdav_service.list(settings.REMOTE_AUDIOS_FOLDER)
+            for file_path in webdav_files:
+                normalized_path = webdav_service.normalize_path(file_path)
+                base_name = Path(normalized_path).stem
+
+                if any(normalized_path.lower().endswith(ext) for ext in settings.AUDIO_EXTENSIONS):
+                    # Check if already in local files
+                    if not any(f['base_name'] == base_name for f in files):
+                        formats = get_available_formats(base_name)
+
+                        files.append({
+                            'filename': Path(normalized_path).name,
+                            'base_name': base_name,
+                            'audio_path': normalized_path,
+                            'has_transcription': formats.get('txt', False),
+                            'transcription_path': None,
+                            'transcription_words': 0,
+                            'has_summary': formats.get('md', False),
+                            'summary_path': None,
+                            'formats': formats,
+                            'processed': processed_registry.is_processed(normalized_path),
+                            'last_modified': 'Unknown',
+                            'size': 'Unknown'
+                        })
+        except Exception as e:
+            pass  # Error logged in endpoint
+
+    # Remove duplicates and sort
+    unique_files = {}
+    for file in files:
+        key = file['base_name']
+        if key not in unique_files:
             unique_files[key] = file
 
     return sorted(unique_files.values(), key=lambda x: x['filename'])