"""
Author: Feyza Sakin
Date: 02/08/2024
Summary: With the given path, it puts all the csv files into a new folder named "new_folder_" with the timestamp (e.g. "new_folder_2024-02-07_14-30-22")
Input: 
    fcltls move_csv_new_folder 'folder path containing CSV files'

Output: 
    1. The following code gets the path.
    2. Gets all the CSV files in the path.
    3. Creates a new folder
    4. Moves all the CSV files into the folder.
"""
import os
import glob
import click
from loguru import logger
from src import click_config_file,myprovider
import datetime
import shutil

logger.trace(f"After imports {__file__}")

@click.command()
@click.argument('folder_path', type=click.Path(exists=True))
@click_config_file.configuration_option(implicit=True,provider=myprovider)
def cli(folder_path):
    """ 
    Command to put all the CSV files into a new folder
    
    """
    logger.debug("Entering scan")

    #
    # Checks if there's already a folder named "base_name"
    # If there's, it increase the naming to have a unique name
    def generating_unique_folder_name(base_name):
        # Initialize a counter. This number will be increased and used in the naming if the new created folder is taken
        counter = 1
        
        # Set the file_name to the name of the folder
        file_name = f"{base_name}"
        
        # Look to the directory to check if there's already a folder with the input name
        while os.path.exists(file_name):
            # If the file name exists, then increase the number to the base name
            file_name = f"{base_name}_{counter}"
            # Increment the counter
            counter += 1
        return file_name
        #
    #
    # If the path to the directory is not given, then return message
    if not folder_path:
        click.echo("\nPlease provide the folder path.\n")
        return

    # Put all the CSV files' paths into the "csv_files" list
    csv_files = glob.glob(os.path.join(folder_path, '*.csv'))
    
    # If csv_files is empty, then tell the user that there's no csv file
    if not csv_files:
        click.echo(f"\nNo CSV files found in {folder_path}.\n")
    # If there's any csv file, create a new folder and move all the csv files into the new folder
    else:
        # Create a new folder in the same directory.
        # # Get the current date and time
        folder_created_time = datetime.datetime.now().strftime("%Y-%m-%d_%H-%M-%S")
        # # Create a folder name called "new_folder_" with time
        new_created_directory_name = "new_folder_" + folder_created_time;
        # # Using "generating_unique_folder_name" function, create a unique folder name in the directory
        new_created_directory_name = generating_unique_folder_name(new_created_directory_name);
        click.echo(f"\nThe name of the new folder is {new_created_directory_name}.");
        #
        # Add the name of the created directory's name to the path
        new_dirs_path = os.path.join(folder_path, new_created_directory_name)  
        # Create the directory using "os.makedirs" with an input, which is the path and the name of the new folder's name
        os.makedirs(new_dirs_path)  
        click.echo(f"The new folder {new_created_directory_name} is created successfully.") # Print success message of the new folder's name
        #
        # Put all the csv files into the new folder
        for a_csv_file in csv_files:
            # Move the content of source, which is "a_csv_file", to destination, which is "new_dirs_path" 
            shutil.move(a_csv_file, new_dirs_path);
         
        click.echo(f"All the csv files in the directory are moved to the new folder {new_created_directory_name}.");
        # Put all the CSV files' paths into the "new_folder_s_csv_files" list
        new_folder_s_csv_files = glob.glob(os.path.join(new_dirs_path, '*.csv'));
        # Check if files are moved to the new folder.
        # If not, tell the user 
        if not new_folder_s_csv_files:
            click.echo(f"\nNo CSV files found in the new folder {new_created_directory_name}.")
        # If files are moved, tell the number of moved files and the name of the moved files 
        click.echo(f"\nSummary:");
        click.echo(f"-------------------------------------------------------------");
        click.echo(f"* The name of the new folder:    \n    {new_created_directory_name}");
        click.echo(f"* The number of moved files:    \n     {len(new_folder_s_csv_files)}");
        click.echo("* The name of the moved files:");
        for a_moved_csv_file_path in new_folder_s_csv_files:
            # Parse the moved file's name from the path
            source_directory_path, a_moved_csv_file_name_new = os.path.split(a_moved_csv_file_path)
            click.echo(f"    {a_moved_csv_file_name_new}");
        click.echo("");

  
if __name__ == '__main__':
    cli() # pylint: disable=no-value-for-parameter