import json

def convert_payload(input_payload, input_format, output_format):

"""

Converts API payloads between different formats.

Args:

input_payload (str): The input payload as a string (JSON).

input_format (str): The format of the input payload ('json', 'dict', 'list').

output_format (str): The desired format of the output payload ('json', 'dict', 'list').

Returns:

str: The converted payload as a JSON string, or None if conversion fails.

"""

try:

if input_format == 'json':

data = json.loads(input_payload) # Parse JSON string to Python object

elif input_format == 'dict':

data = json.loads(input_payload) # Parse JSON string to Python object

elif input_format == 'list':

data = json.loads(input_payload) # Parse JSON string to Python object

else:

print(f"Error: Invalid input format: {input_format}")

return None

if output_format == 'json':

return json.dumps(data, indent=4) # Convert Python object to JSON string

elif output_format == 'dict':

return json.dumps(data, indent=4) # Convert Python object to JSON string

elif output_format == 'list':

return json.dumps(data, indent=4) # Convert Python object to JSON string

else:

print(f"Error: Invalid output format: {output_format}")

return None

except json.JSONDecodeError as e:

print(f"Error decoding JSON: {e}")

return None

except Exception as e:

print(f"An error occurred: {e}")

return None

if __name__ == '__main__':

# Example Usage

input_json = '{"name": "John Doe", "age": 30, "city": "New York"}'

output_dict = convert_payload(input_json, 'json', 'dict')

if output_dict:

print("Converted to dictionary:\n", output_dict)

input_dict = '{"name": "Jane Doe", "age": 25, "city": "London"}'

output_json = convert_payload(input_dict, 'dict', 'json')

if output_json:

print("\nConverted to JSON:\n", output_json)

input_list = '[{"name": "Alice", "age": 28}, {"name": "Bob", "age": 35}]'

output_list = convert_payload(input_list, 'list', 'json')

if output_list:

print("\nConverted to JSON:\n", output_list)