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

def get_list_train_test_exterior(camera_setting):
    # print(camera_setting)
    list_numbers = []
    data = []
    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]
        numbers = images_id[-4:]
        if not numbers.isdigit():
            numbers = images_id.split("_")[-2]
        if not numbers.isdigit():
            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:
            confuse.append([os.path.join(camera_setting, i) for i in temp_list_test])
        elif len(temp_list_test) == 0:
            confuse.append([os.path.join(camera_setting, i) for i in temp_list_train])
        else:
            temp_dict = {}
            temp_dict['input_image'] = [os.path.join(camera_setting, i) for i in temp_list_train]
            temp_dict['groundtruth'] = [os.path.join(camera_setting, i) for i in temp_list_test]
            data.append(temp_dict)
    return {"data": data, "confuse": confuse}

def get_list_train_test_hdr(camera_setting):
    data = []
    confuse = []
    dict_numbers = {}
    for images_name in os.listdir(os.path.join(camera_setting)):
        # images_name = os.path.join(camera_setting, images_name)
        if os.path.isdir(os.path.join(camera_setting, images_name)):
            return False
        images_id = images_name.split(".")[0].split("\\")[-1]
        numbers = images_id[-4:]
        if not numbers.isdigit():
            numbers = images_id.split("_")[-2]
        if not numbers.isdigit():
            print(images_id)
        dict_numbers[int(numbers)] = images_name
        # print(numbers)
        # print(images_id, "\n")
    dict_numbers = dict(sorted(dict_numbers.items()))
    temp_list_input_image = []
    temp_list_groundtruth = []
    is_groundtruth = False
    for number in dict_numbers:
        image = os.path.join(camera_setting, dict_numbers[number])
        if not image.endswith(".jpg"):
            temp_list_input_image.append(image)
            is_groundtruth = False
        elif image.endswith(".jpg") and is_groundtruth == False:
            temp_list_groundtruth.append(image)
            data.append(
                {
                    "input_image": temp_list_input_image,
                    "groundtruth": temp_list_groundtruth
                }
            )
            temp_list_input_image = []
            temp_list_groundtruth = []
            is_groundtruth = True
        elif image.endswith(".jpg") and is_groundtruth == True:
            confuse.append(image)
    return {"data": data, "confuse": confuse}
    

# def extract_numbers(string):
#     numbers = re.findall(r'\d+', string)
#     return ''.join(numbers)

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['data'] = []
    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):
                # print(os.path.join(address, camera_setting))
                if "exterior" in camera_setting.lower():
                    camera_setting = os.path.join(address, camera_setting)
                    temp_output = get_list_train_test_exterior(camera_setting=camera_setting)
                elif "hdr" in camera_setting.lower():
                    camera_setting = os.path.join(address, camera_setting)
                    temp_output = get_list_train_test_hdr(camera_setting=camera_setting)
                if temp_output == False:
                    map_image['false'].append(camera_setting)
                else:
                    map_image['data'] += temp_output['data']
                    map_image['confuse'] += temp_output['confuse']
    with open(f"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)