Add export to latex button (i think)

export_api.py

@@ -0,0 +1,94 @@
+"""
+Simple Flask API for PDF Export
+
+This provides a web API endpoint for the gallery export functionality.
+"""
+
+from flask import Flask, request, jsonify, send_file
+from pathlib import Path
+import json
+import tempfile
+import os
+from orchestration.pdf_export import PDFExporter, check_dependencies
+
+app = Flask(__name__)
+exporter = PDFExporter()
+
+
+@app.route('/api/export-pdf', methods=['POST'])
+def export_pdf():
+    """Export selected plots to merged PDF"""
+    try:
+        data = request.get_json()
+        
+        if not data or 'plots' not in data:
+            return jsonify({'error': 'No plots specified'}), 400
+        
+        plot_urls = data['plots']
+        layout = data.get('layout', {'rows': 2, 'cols': 2})
+        
+        # Convert URLs to file paths
+        plot_paths = []
+        for url in plot_urls:
+            # Extract path from file:// URL or relative path
+            if url.startswith('file://'):
+                path = url[7:]  # Remove 'file://' prefix
+            elif url.startswith('http'):
+                return jsonify({'error': 'Remote URLs not supported'}), 400
+            else:
+                # Assume relative path from web root
+                path = url
+            
+            # Resolve to absolute path
+            plot_path = Path(path)
+            if not plot_path.exists():
+                return jsonify({'error': f'Plot not found: {path}'}), 404
+            
+            plot_paths.append(str(plot_path))
+        
+        if not plot_paths:
+            return jsonify({'error': 'No valid plots found'}), 400
+        
+        # Create merged PDF
+        pdf_bytes = exporter.merge_plots(plot_paths, layout)
+        
+        # Create temporary file to serve
+        with tempfile.NamedTemporaryFile(suffix='.pdf', delete=False) as tmp_file:
+            tmp_file.write(pdf_bytes)
+            tmp_path = tmp_file.name
+        
+        def cleanup_temp_file():
+            """Clean up temporary file after sending"""
+            try:
+                os.unlink(tmp_path)
+            except OSError:
+                pass
+        
+        return send_file(
+            tmp_path,
+            as_attachment=True,
+            download_name='merged_plots.pdf',
+            mimetype='application/pdf'
+        )
+        
+    except Exception as e:
+        return jsonify({'error': str(e)}), 500
+
+
+@app.route('/api/export-status', methods=['GET'])
+def export_status():
+    """Check export capabilities"""
+    deps = check_dependencies()
+    return jsonify({
+        'available': any(deps.values()),
+        'dependencies': deps,
+        'methods': {
+            'pypdf2': deps['pypdf2'],
+            'pdfjam': deps['pdfjam']
+        }
+    })
+
+
+if __name__ == '__main__':
+    # For development only
+    app.run(debug=True, port=5000)