import os
import re
import shutil
import json
# from type import List

def get_list_train_test(camera_setting):
    # print(camera_setting)
    list_numbers = []
    temp_dict = {
        'train': {},
        'test': {},
        'confuse': {}
    }
    for images_name in os.listdir(os.path.join(camera_setting)):
        images_name = os.path.join(camera_setting, images_name)
        if os.path.isdir(images_name):
            return False
        images_id = images_name.split(".")[0].split("\\")[-1]
        try:
            numbers = re.findall(r'\d+', images_id)[0]
        except:
            print(images_id)
        list_numbers.append(numbers)
    set_numbers =  set()
    for number in list_numbers:
        set_numbers.add(number)
    # print(set_numbers)
    
    for image_number in set_numbers:
        temp_list_train = []
        temp_list_test = [] 
        for images_name in os.listdir(os.path.join(camera_setting)):
            if image_number in images_name:
                # print(image_number)
                # print(images_name)
                if images_name.endswith(".jpg"):
                    temp_list_test.append(images_name)
                else:
                    temp_list_train.append(images_name)
        if len(temp_list_train) == 0:
            temp_dict['confuse'][image_number] = temp_list_test
        elif len(temp_list_test) == 0:
            temp_dict['confuse'][image_number] = temp_list_train
        else:
            temp_dict['train'][image_number] = temp_list_train
            temp_dict['test'][image_number] = temp_list_test
    return temp_dict

def check_folder(camera_setting):
    list_folder = []
    for item in os.listdir(camera_setting):
        if os.path.isdir(os.path.join(camera_setting, item)):
            list_folder.append(os.path.join(camera_setting, item))
    for folder in list_folder:
        files = os.listdir(folder)
        for fname in files:
            # copying the files to the 
            # destination directory
            shutil.copy2(os.path.join(folder,fname), os.path.join(folder,".."))
    return list_folder

def main(data_path):
    map_image = dict()
    map_image['train'] = {}
    map_image['test'] = {}
    map_image['confuse'] = {}
    map_image['false'] = []
    for fold_number in os.listdir(data_path):
        if "." in fold_number:
            continue
        # print(fold_number)
        for address in os.listdir(os.path.join(data_path, fold_number)):
            address = os.path.join(data_path, fold_number, address)
            for camera_setting in os.listdir(address):
                camera_setting = os.path.join(address, camera_setting)
                # print(check_folder(camera_setting=camera_setting))
                temp_dict = get_list_train_test(camera_setting=camera_setting)
                if temp_dict == False:
                    map_image['false'].append(camera_setting)
                else:
                    map_image['train'][camera_setting] = temp_dict['train']
                    map_image['test'][camera_setting] = temp_dict['test']
                    map_image['confuse'][camera_setting] = temp_dict['confuse']
    with open("metadata.json", 'w') as fout:
        json_dumps_str = json.dumps(map_image, indent=4)
        print(json_dumps_str, file=fout)
if __name__ == "__main__":
    data_path = "data_temp"
    main(data_path)