"""
META-CAPABILITY: meta_unnamed
Code that creates code!
"""

class FunctionGenerator:
    """
    A class to generate Python functions programmatically.

    This class allows you to create custom Python functions based on specified parameters,
    including function name, docstring, input parameters, and more. The generated code can be saved to a file.

    Attributes:
        func_name (str): Name of the function to generate.
        is_script (bool): Whether the function should be a script (with if __name__ == '__main__').
        params (list): List of parameter names for the function.
        docstring (str): Docstring for the function.
        error_handling (bool): Whether to include basic error handling.
    """

    def __init__(self, func_name='generated_function', is_script=False, params=None, docstring='',
                 error_handling=False):
        """
        Initialize the FunctionGenerator with default parameters.

        Args:
            func_name (str): Name of the function. Defaults to 'generated_function'.
            is_script (bool): Whether the generated code should be a script.
                             Defaults to False.
            params (list): List of parameter names as strings. Defaults to None.
            docstring (str): Docstring for the function. Defaults to ''.
            error_handling (bool): Whether to include try-except blocks. Defaults to False.
        """
        self.func_name = func_name
        self.is_script = is_script
        self.params = params if params else []
        self.docstring = docstring
        self.error_handling = error_handling

    def _generate_code(self):
        """
        Generate the Python code based on the specified parameters.

        Returns:
            str: The generated Python function as a string.
        """
        # Start with docstring if provided
        code_lines = []
        if self.docstring:
            code_lines.append(f'"""{self.docstring}"""')

        # Function definition line
        def_line = f'def {self.func_name}'
        if self.params:
            def_line += '(' + ', '.join(self.params) + ')'
        code_lines.append(def_line)

        # Add example processing logic
        code_lines.append('    """')
        code_lines.append('    Example processing logic.')
        code_lines.append('    """')
        code_lines.append('    # Placeholder for actual functionality')
        code_lines.append('    return "Function executed successfully!"')

        # Add try-except block if error handling is enabled
        if self.error_handling:
            code_lines.append('')
            code_lines.append('try:')
            code_lines.append('    # Code that might raise exceptions')
            code_lines.append('except Exception as e:')
            code_lines.append(f'    print(f"Error in {self.func_name}: {e}")')

        # Join all lines into a single string
        return '\n'.join(code_lines)

    def save_to_file(self, file_path):
        """
        Save the generated code to a specified file.

        Args:
            file_path (str): Path where the generated function should be saved.
        Raises:
            RuntimeError: If there is an error while writing to the file.
        """
        try:
            with open(file_path, 'w') as f:
                f.write(self._generate_code())
        except IOError:
            raise RuntimeError(f"Error saving code to {file_path}")

    @classmethod
    def generate_example(cls):
        """
        Example usage of FunctionGenerator.

        Creates a function generator for an example function and saves it to a file.
        """
        # Create instance with some parameters
        gen = cls(func_name='example_function',
                  is_script=True,
                  params=['x', 'y'],
                  docstring='This is an example function.',
                  error_handling=True)

        # Generate code and save to file
        gen.save_to_file('generated_func.py')

# Example usage:
if __name__ == '__main__':
    FunctionGenerator.generate_example()