Create app.py

app.py

@@ -0,0 +1,171 @@
+from flask import Flask, request, send_file, render_template_string
+import gradio as gr
+import ast
+import os
+from io import StringIO
+
+app = Flask(__name__)
+
+# Mapping of Gradio components to Toga equivalents
+GRADIO_TO_TOGA = {
+    "Textbox": ("toga.TextInput", "placeholder='Enter Text'"),
+    "Image": ("toga.Label", "Placeholder: Use file picker for image"),
+    "Button": ("toga.Button", "on_press=button_handler"),
+    "Markdown": ("toga.Label", ""),
+    "Audio": ("toga.Label", "Placeholder: Audio not supported"),
+    "Video": ("toga.Label", "Placeholder: Video not supported"),
+}
+
+# Parse Gradio app code and extract components
+def parse_gradio_code(code):
+    try:
+        tree = ast.parse(code)
+        components = []
+        functions = []
+        
+        for node in ast.walk(tree):
+            # Extract function definitions
+            if isinstance(node, ast.FunctionDef):
+                functions.append(node.name)
+            # Extract Gradio component calls
+            if isinstance(node, ast.Call) and hasattr(node.func, 'attr'):
+                if node.func.attr in GRADIO_TO_TOGA:
+                    component = node.func.attr
+                    args = [ast.dump(arg, annotate_fields=False) for arg in node.args]
+                    kwargs = {kw.arg: ast.dump(kw.value, annotate_fields=False) for kw in node.keywords}
+                    components.append({"type": component, "args": args, "kwargs": kwargs})
+        
+        return components, functions
+    except Exception as e:
+        return [], [str(e)]
+
+# Generate Toga code from parsed components
+def generate_toga_code(components, functions):
+    toga_code = [
+        "import toga",
+        "from toga.style import Pack",
+        "from toga.style.pack import COLUMN, ROW",
+        "import os",
+        "",
+        "# Placeholder for original functions",
+        "# Copy your original function definitions here",
+        f"# Detected functions: {', '.join(functions) if functions else 'None'}",
+        "",
+        "def build(app):",
+        "    box = toga.Box(style=Pack(direction=COLUMN, padding=10))",
+        ""
+    ]
+    
+    for idx, comp in enumerate(components):
+        toga_comp, extra = GRADIO_TO_TOGA.get(comp["type"], ("toga.Label", f"Placeholder: {comp['type']} not supported"))
+        
+        # Handle component-specific logic
+        if comp["type"] == "Textbox":
+            label = comp["kwargs"].get("label", f"'Text Input {idx}'")
+            toga_code.append(f"    label_{idx} = toga.Label({label}, style=Pack(padding=(5, 5, 0, 5)))")
+            toga_code.append(f"    input_{idx} = {toga_comp}(style=Pack(padding=5))")
+            toga_code.append(f"    box.add(label_{idx})")
+            toga_code.append(f"    box.add(input_{idx})")
+        
+        elif comp["type"] == "Image":
+            toga_code.append(f"    image_label_{idx} = toga.Label('Image: None selected', style=Pack(padding=5))")
+            toga_code.append(f"    def select_image_{idx}(widget):")
+            toga_code.append(f"        path = app.main_window.open_file_dialog('Select Image', file_types=['png', 'jpg', 'jpeg'])")
+            toga_code.append(f"        if path:")
+            toga_code.append(f"            image_label_{idx}.text = f'Image: {{path}}'")
+            toga_code.append(f"    image_button_{idx} = toga.Button('Upload Image', on_press=select_image_{idx}, style=Pack(padding=5))")
+            toga_code.append(f"    box.add(toga.Label('Upload Image', style=Pack(padding=(5, 5, 0, 5))))")
+            toga_code.append(f"    box.add(image_button_{idx})")
+            toga_code.append(f"    box.add(image_label_{idx})")
+        
+        elif comp["type"] == "Button":
+            label = comp["kwargs"].get("value", f"'Submit {idx}'")
+            toga_code.append(f"    def button_handler_{idx}(widget):")
+            toga_code.append(f"        # Placeholder: Implement logic for {functions[0] if functions else 'function'}")
+            toga_code.append(f"        pass")
+            toga_code.append(f"    button_{idx} = {toga_comp}(label={label}, style=Pack(padding=5))")
+            toga_code.append(f"    box.add(button_{idx})")
+        
+        elif comp["type"] == "Markdown":
+            text = comp["args"][0] if comp["args"] else "'Markdown Text'"
+            toga_code.append(f"    markdown_{idx} = {toga_comp}({text}, style=Pack(padding=5, font_size=16))")
+            toga_code.append(f"    box.add(markdown_{idx})")
+        
+        else:
+            toga_code.append(f"    placeholder_{idx} = {toga_comp}('{extra}', style=Pack(padding=5))")
+            toga_code.append(f"    box.add(placeholder_{idx})")
+    
+    toga_code.extend([
+        "",
+        "    return box",
+        "",
+        "def main():",
+        "    return toga.App('Gradio to Toga App', 'org.example.gradio2toga', startup=build)",
+        "",
+        "if __name__ == '__main__':",
+        "    main().main_loop()"
+    ])
+    
+    return "\n".join(toga_code)
+
+# Gradio interface for file upload
+def convert_gradio_to_toga(file):
+    if not file:
+        return "Please upload a Gradio app Python file."
+    
+    try:
+        # Read uploaded file
+        code = file.decode('utf-8')
+        components, functions = parse_gradio_code(code)
+        
+        if not components and functions and isinstance(functions[0], str):
+            return f"Error parsing code: {functions[0]}"
+        
+        # Generate Toga code
+        toga_code = generate_toga_code(components, functions)
+        
+        # Save Toga code to a temporary file
+        output_path = "toga_app.py"
+        with open(output_path, "w") as f:
+            f.write(toga_code)
+        
+        return send_file(output_path, as_attachment=True, download_name="toga_app.py")
+    except Exception as e:
+        return f"Error: {str(e)}"
+
+# Gradio interface
+def create_gradio_interface():
+    with gr.Blocks() as interface:
+        gr.Markdown("# Gradio to Toga Converter")
+        file_input = gr.File(label="Upload Gradio Python File")
+        convert_button = gr.Button("Convert to Toga")
+        output = gr.File(label="Download Toga App")
+        
+        convert_button.click(
+            fn=convert_gradio_to_toga,
+            inputs=file_input,
+            outputs=output
+        )
+    return interface
+
+# Flask route
+@app.route('/')
+def serve_gradio():
+    interface = create_gradio_interface()
+    # For Hugging Face Spaces, launch Gradio
+    interface.launch(share=False, server_name="0.0.0.0", server_port=int(os.environ.get("PORT", 7860)))
+    return render_template_string("""
+    <!DOCTYPE html>
+    <html>
+    <head>
+        <title>Gradio to Toga Converter</title>
+    </head>
+    <body>
+        <h1>Gradio to Toga Converter</h1>
+        <p>Access the Gradio interface to upload your Gradio app and download the Toga equivalent.</p>
+    </body>
+    </html>
+    """)
+
+if __name__ == "__main__":
+    app.run(host="0.0.0.0", port=int(os.environ.get("PORT", 7860)))