import json

def squash_details(data):
  """
  Squashes details field into a single string with key-value pairs.

  Args:
      data: A list of dictionaries containing message and details fields.

  Returns:
      A list of dictionaries with the modified details field.
  """
  for item in data:
    details_str = ", ".join([f"{key}: {value}" for key, value in item["details"].items()])
    item["details"] = details_str
  return data

# Read data from data.json
with open("data.json", "r") as file:
  data = json.load(file)

# Squash details
squashed_data = squash_details(data)

# Write modified data to data2.json
with open("data2.json", "w") as file:
  json.dump(squashed_data, file, indent=4)  # Add indentation for readability (optional)

print("Successfully processed data and wrote to data2.json!")