start.py

class Start:
    """
    The Start class coordinates the initialization process for the LILY Quantum Project.
    It ensures all essential files, directories, and logs are present and valid, and it verifies
    data consistency. Logs all critical events and errors during initialization.

    Attributes:
        reader (Reader): An instance of the Reader class for file and log management.
        train_json_exists (bool): Indicates if the 'train.json' file exists.
    """

    def __init__(self, reader):
        """
        Initializes the Start class.

        Parameters:
            reader (Reader): Instance of the Reader class used for file and log management.
        """
        self.reader = reader
        self.train_json_exists = False  # Initial state: 'train.json' is not found.

    def run(self):
        """
        The main execution method that performs the following steps:
        1. Checks for required files and directories.
        2. Validates the log file.
        3. Ensures the consistency of 'data.json'.
        4. Validates L-Gate parameter schemas.
        """
        # Step 1: File Check
        self.reader.log("Initiating file check...")
        file_check_result = self.reader.fileCheck()

        if file_check_result == 1001:  # 'var' folder missing
            self.reader.log("ERROR: 'var' folder is missing. Terminating program.")
            exit(1001)
        elif file_check_result == 1002:  # 'data.json' missing
            self.reader.log("ERROR: 'data.json' file is missing. Terminating program.")
            exit(1002)
        elif file_check_result == 1003:  # 'config.json' missing
            self.reader.log("ERROR: 'config.json' file is missing. Terminating program.")
            exit(1003)
        elif file_check_result == 2001:  # All files present, including 'train.json'
            self.train_json_exists = True
            self.reader.log("SUCCESS: All files are present. 'train.json' exists.")
            self.reader.log("'train.json' found. Proceeding with initialization.")
        elif file_check_result == 2002:  # All files present, but 'train.json' missing
            self.reader.log("SUCCESS: All files are present. 'train.json' is missing.")
            self.reader.log("'train.json' missing. Proceeding without training file.")
        else:  # Unexpected error
            self.reader.log("ERROR: Unexpected error during file check. Terminating program.")
            exit(100105)

        # Step 2: Logfile Check
        self.reader.log("Checking for an existing log file...")
        if not self.reader.checkLog():
            self.reader.log("ERROR: Failed to create or access log file. Terminating program.")
            exit(100106)
        self.reader.log("Log file is valid and up-to-date.")

        # Step 3: Data Consistency Check
        self.reader.log("Verifying data consistency for 'data.json'...")
        if not self.reader.dataConsistency():
            self.reader.log("ERROR: 'data.json' file is inconsistent. Terminating program.")
            exit(100104)
        self.reader.log("'data.json' is consistent. Proceeding with execution.")

        # Step 4: Validate L-Gate Parameter Schemas
        self.reader.log("Validating L-Gate parameter schemas...")
        if not self.reader.validateLGateParams():
            self.reader.log("ERROR: L-Gate parameter validation failed. Terminating program.")
            exit(100107)
        self.reader.log("L-Gate parameters are valid. Initialization successful.")

        # Step 5: Dynamic File Reloading Check
        self.reader.log("Setting up dynamic file reloading for 'data.json' and 'train.json'...")
        if not self.setupDynamicFileReload():
            self.reader.log("ERROR: Failed to initialize dynamic file reloading. Terminating program.")
            exit(100108)
        self.reader.log("Dynamic file reloading is set up successfully.")

        # Ready to proceed with core operations for the LILY Project.
        self.reader.log("Initialization complete. Ready to execute LILY Quantum Project tasks.")

    def setupDynamicFileReload(self):
        """
        Configures dynamic reloading for data files. If 'data.json' or 'train.json' is updated during runtime,
        it triggers a reload to ensure up-to-date processing.

        Returns:
            bool: True if setup is successful, False otherwise.
        """
        try:
            # Placeholder for dynamic reloading logic, e.g., using file watchers.
            # For example, use the 'watchdog' library to monitor changes to specific files.
            self.reader.log("Watching 'data.json' and 'train.json' for changes...")
            # Simulate dynamic reload setup
            return True
        except Exception as e:
            self.reader.log(f"ERROR during dynamic file reload setup: {str(e)}")
            return False