import pathlib
import os
import argparse
from typing import List
import pandas as pd
import csv

from pandas.core.series import Series

from media import Media

def find_all_files(directory: pathlib.Path) -> list:
    ps = []
    for p in directory.rglob('*'):
        if "eaDir" not in str(p):
            ps.append((p))
    return ps

def view_unqiue_files(p: pathlib.Path, min_size):
    if p.lstat().st_size > min_size * 1024 * 1024:
        if p.lstat().st_nlink == 1:
            print("File with only one hardlink:" + str(p) + "; size: " + 
                str(p.lstat().st_size/1024/1024) + 
                "MB with number of links: " + str(p.lstat().st_nlink))
        else:
            print("File with more than one hardlink:" + str(p) + "; size: " + 
                str(p.lstat().st_size/1024/1024) + 
                "MB with number of links: " + str(p.lstat().st_nlink))

if __name__ == "__main__":
    parser = argparse.ArgumentParser(description='convert hardlink to symlink in download folder')

    parser.add_argument('-s','--source',
                        type=str,
                        help='the path to directory with source files')

    parser.add_argument('-t', '--target',
                        type=str,
                        help='the path to directory to move files')

    parser.add_argument('--size',
                        type=int,
                        help='Expected minimum file size')

    parser.add_argument('--csv',
                        type=str,
                        choices=['False','True'],
                        help='export source folders unique files into csv')

    parser.add_argument('--order',
                        type=str,
                        help='order exported csv by name or inode',
                        choices=['inode','name'])
    
    parser.add_argument('--csv_path',
                        type=str,
                        help='path to export csv')

    parser.add_argument('--move',
                        type=str,
                        help='Confirm whether to move all files with NumberOfLinks as 1 from source directory to target directory')

    args = parser.parse_args()
    min_file_size = 50
    path_library = args.source
    path_inventory = args.target
    
    if args.size:
        min_file_size = args.size
    paths = find_all_files(pathlib.Path(path_library))

    if args.csv == "True":
        csv_path = "result.csv"
        df_csv = pd.DataFrame(columns=['FileName', 'Path', 'inode', 'NumberOfLinks'])
        for x in paths:
            if x.lstat().st_size > min_file_size * 1024 * 1024:
                new_row = {'FileName': x.name,
                            'Path': str(x),
                            'inode': x.lstat().st_ino,
                            'NumberOfLinks': x.lstat().st_nlink}
                df_csv = df_csv.append(new_row, ignore_index=True)

                print(df_csv)
        if args.order == "inode":
            df_csv.sort_values(by="inode")
        else:
            df_csv.sort_values(by="FileName")
        
        if args.csv_path:
            csv_path = args.csv_path
        df_csv.to_csv(csv_path)
    else:
        for x in paths:
            view_unqiue_files(x, min_file_size)

#                dst_path = pathlib.Path(os.path.join(path_inventory,x.name))
#                print("Its new path: " + str(dst_path))
#                x.link_to(dst_path)