property_file_reader.py

from typing import Dict
import os


def read_properties(file_name: str) -> Dict[str,str]:
    """
    Read a property file with 1 key/value per line - no multiline supported
    Multiple lines with the same key would return the last line
    """
    with open(file_name) as f:
        l = [line.split("=") for line in f.readlines()]
        return {key.strip(): value.strip() for key, value in l}
    
def read_env_properties(file_prefix: str="config", 
                        config_folder: str = os.getcwd(),
                        env_var_name: str = "ENVIRONMENT") -> Dict[str,str]:
    """
    Given file_prefix set to "config" and the value of env var set to dev, it would read
    "config.dev.properties" files from current directory.
    """
    path = os.path.join(config_folder, f"{file_prefix}.{os.environ[env_var_name]}.properties")
    return read_properties(path)