import os
import re

# pattern = re.compile(":::spoiler Gitlab sync([^:]*):::")
# pattern = re.compile("[^:]*:::")


def find_metadata(filename):
    with open(filename, "r") as file:
        print(f"File: {filename}")
        data = file.read()

        metadata = {}

        start_str = ":::spoiler Gitlab sync\n"
        end_str = "\n:::"

        start_i = data.find(start_str)
        if start_i >= 0:
            start_i += len(start_str)
            end_i = data.find(end_str, start_i + 1)
            file_data = data[start_i:end_i]
            for line in file_data.split("\n"):
                key_index = 2
                value_index = line.find(": ")
                key = line[key_index:value_index]
                value = line[value_index + 2 :]
                metadata[key] = value
            print("Valid report")
            print(metadata)
        else:
            print("Not a valid report")
            return None

        return metadata