import json
import random
import jsonlines
import os

def load_data_jsonl(data_path):
    data = []
    with open(data_path, "r+", encoding="utf8") as f:
        for item in jsonlines.Reader(f):
            data.append(item)

    return data

def load_data(data_path):
    with open(data_path, 'r') as f:
        data = json.load(f)

    return data

def ensure_dir_exists(path):
    """Create directory if it doesn't exist"""
    directory = os.path.dirname(path)
    if not os.path.exists(directory):
        os.makedirs(directory)
        print(f"Created directory: {directory}")

def build_dataset(data_list, path):
    with open('/fs-computility/niuyazhe/lixueyan/meme/dataset-meme-rewardmodel/prompt/reward_model_prompt.txt', 'r') as f:
        PROMPT = f.read()

    dict_list = []
    for id, d in enumerate(data_list):
            data_json = {'id': id,
                            'image': d["image_list"],
                            'conversations': [
                                {'from': 'human', 'value': f'{PROMPT}\nFirst image: <image>\nSecond image:<image>'}, # f'<image>{replace_with_zh(PROMPT, True)}
                                {'from': 'gpt', 'value': d["label"]}
                ]}
            dict_list.append(data_json)
    with open(path, 'w', encoding='utf-8') as file:
        for entry in dict_list:
            json.dump(entry, file)
            file.write('\n')
    return len(dict_list)

def build_dataset_multihead(data_list, path, mask):
    with open('/fs-computility/niuyazhe/lixueyan/meme/dataset-meme-rewardmodel/prompt/reward_model_prompt.txt', 'r') as f:
        PROMPT = f.read()

    dict_list = []
    for id, d in enumerate(data_list):
            data_json = {'id': id,
                            'image': d["image_list"],
                            'conversations': [
                                {'from': 'human', 'value': f'{PROMPT}\nFirst image: <image>\nSecond image:<image>'}, # f'<image>{replace_with_zh(PROMPT, True)}
                                {'from': 'gpt', 'value': [[d["label"]]*2, mask]}
                ]}
            dict_list.append(data_json)
    with open(path, 'w', encoding='utf-8') as file:
        for entry in dict_list:
            json.dump(entry, file)
            file.write('\n')
    return len(dict_list)

def build_dataset_cross(data_list, path, TYPE):
    with open('/fs-computility/niuyazhe/lixueyan/meme/dataset-meme-rewardmodel/prompt/reward_model_prompt.txt', 'r') as f:
        PROMPT = f.read()

    dict_list = []
    origin_image_list = []
    boring_image_list = []
    origin_text_lengths = []
    boring_text_lengths = []
    for id, d in enumerate(data_list):
        if d["label"] == 0:
            origin_image_list.append(d["image_list"][0])
            boring_image_list.append(d["image_list"][1])
            origin_text_lengths.append(d["text_lengths"][0])
            boring_text_lengths.append(d["text_lengths"][1])
        elif d["label"] == 1:
            origin_image_list.append(d["image_list"][1])
            boring_image_list.append(d["image_list"][0])
            origin_text_lengths.append(d["text_lengths"][1])
            boring_text_lengths.append(d["text_lengths"][0])
        else:
            raise ValueError("Wrong label")

    # for origin, boring in zip(origin_image_list, boring_image_list):
    #     if 'origin' not in origin or TYPE[:-4] not in boring:
    #         raise ValueError("Wrong split")
    
    print(f'sorting the boring images')
    # Create pairs of boring images with their text lengths and sort once
    boring_with_lengths = list(zip(boring_image_list, boring_text_lengths))
    boring_with_lengths.sort(key=lambda x: x[1])  # Sort by text length (ascending)
    
    print(f'generating the pairs')
    for id, origin in enumerate(origin_image_list):
        original_length = origin_text_lengths[id]
        
        # Find the index where boring text lengths become longer than original
        longer_idx = 0
        while longer_idx < len(boring_with_lengths) and boring_with_lengths[longer_idx][1] <= original_length:
            longer_idx += 1
        
        # With 70% probability, choose a boring image with longer text if available
        # if longer_idx < len(boring_with_lengths) and random.random() < 0.7:
        #     # Sample from longer text images
        #     boring = random.choice(boring_with_lengths[longer_idx:])[0]
        # else:
        #     # Sample from shorter text images, or all if none are longer
        #     if longer_idx > 0:
        #         boring = random.choice(boring_with_lengths[:longer_idx])[0]
        #     else:
        #         boring = random.choice(boring_with_lengths)[0]

        boring = random.choice(boring_with_lengths)[0]
        
        pos_neg = random.choice(["pos", "neg"])
        if pos_neg == 'pos':
            data_json = {'id': id,
                            'image': [origin, boring],
                            'conversations': [
                                {'from': 'human', 'value': f'{PROMPT}\nFirst image: <image>\nSecond image:<image>'}, 
                                {'from': 'gpt', 'value': 0}
                ]}
            dict_list.append(data_json)
        else:
            data_json = {'id': id,
                            'image': [boring, origin],
                            'conversations': [
                                {'from': 'human', 'value': f'{PROMPT}\nFirst image: <image>\nSecond image:<image>'}, 
                                {'from': 'gpt', 'value': 1}
                ]}
            dict_list.append(data_json)
    with open(path, 'w', encoding='utf-8') as file:
        for entry in dict_list:
            json.dump(entry, file)
            file.write('\n')
    return len(dict_list)

def build_dataset_cross_multihead(data_list, path, TYPE, mask):
    with open('/fs-computility/niuyazhe/lixueyan/meme/dataset-meme-rewardmodel/prompt/reward_model_prompt.txt', 'r') as f:
        PROMPT = f.read()

    dict_list = []
    origin_image_list = []
    boring_image_list = []
    origin_text_lengths = []
    boring_text_lengths = []
    for id, d in enumerate(data_list):
        if d["label"] == 0:
            origin_image_list.append(d["image_list"][0])
            boring_image_list.append(d["image_list"][1])
            origin_text_lengths.append(d["text_lengths"][0])
            boring_text_lengths.append(d["text_lengths"][1])
        elif d["label"] == 1:
            origin_image_list.append(d["image_list"][1])
            boring_image_list.append(d["image_list"][0])
            origin_text_lengths.append(d["text_lengths"][1])
            boring_text_lengths.append(d["text_lengths"][0])
        else:
            raise ValueError("Wrong label")

    # for origin, boring in zip(origin_image_list, boring_image_list):
    #     if 'origin' not in origin or TYPE[:-4] not in boring:
    #         raise ValueError("Wrong split")
    
    print(f'sorting the boring images')
    # Create pairs of boring images with their text lengths and sort once
    boring_with_lengths = list(zip(boring_image_list, boring_text_lengths))
    boring_with_lengths.sort(key=lambda x: x[1])  # Sort by text length (ascending)
    
    print(f'generating the pairs')
    for id, origin in enumerate(origin_image_list):
        original_length = origin_text_lengths[id]
        
        # Find the index where boring text lengths become longer than original
        longer_idx = 0
        while longer_idx < len(boring_with_lengths) and boring_with_lengths[longer_idx][1] <= original_length:
            longer_idx += 1
        
        # With 70% probability, choose a boring image with longer text if available
        if longer_idx < len(boring_with_lengths) and random.random() < 0.7:
            # Sample from longer text images
            boring = random.choice(boring_with_lengths[longer_idx:])[0]
        else:
            # Sample from shorter text images, or all if none are longer
            if longer_idx > 0:
                boring = random.choice(boring_with_lengths[:longer_idx])[0]
            else:
                boring = random.choice(boring_with_lengths)[0]
        
        pos_neg = random.choice(["pos", "neg"])
        if pos_neg == 'pos':
            data_json = {'id': id,
                            'image': [origin, boring],
                            'conversations': [
                                {'from': 'human', 'value': f'{PROMPT}\nFirst image: <image>\nSecond image:<image>'}, 
                                {'from': 'gpt', 'value': [[0]*2, mask]}
                ]}
            dict_list.append(data_json)
        else:
            data_json = {'id': id,
                            'image': [boring, origin],
                            'conversations': [
                                {'from': 'human', 'value': f'{PROMPT}\nFirst image: <image>\nSecond image:<image>'}, 
                                {'from': 'gpt', 'value': [[1]*2, mask]}
                ]}
            dict_list.append(data_json)
    with open(path, 'w', encoding='utf-8') as file:
        for entry in dict_list:
            json.dump(entry, file)
            file.write('\n')
    return len(dict_list)

def build_json(dataset_path_list, length_list, name_list, json_path):
    dict_list = []
    for dataset_path, length, name in zip(dataset_path_list, length_list, name_list):
        dict = {
            f"{name}": {
            "root": "",
            "annotation": dataset_path,
            "data_augment": False,
            "repeat_time": 1,
            "length": length
            }
        }
        dict_list.append(dict)

    with open(json_path, 'w', encoding='utf-8') as file:
        for dict in dict_list:
            json.dump(dict, file)
            file.write('\n')
            
def split_train_test(data, train_path, test_path):
    random.shuffle(data)

    selected_items = data[:int(len(data) * 0.9)]
    unselected_items = data[int(len(data) * 0.9):]

    with open(train_path, 'w') as f:
        json.dump(selected_items, f)

    with open(test_path, 'w') as f:
        json.dump(unselected_items, f)
    
    return selected_items, unselected_items

def split_train_test_original(original_dataset):
    # First, load and split the original dataset to get the indices
    original_data = load_data(original_dataset)
    random.shuffle(original_data)
    
    # Split the original data
    train_data_original = original_data[:int(len(original_data) * 0.9)]
    test_data_original = original_data[int(len(original_data) * 0.9):]
    
    # Extract image IDs from filenames (assuming filenames are like "image_xxx.jpg")
    train_image_ids = []
    for item in train_data_original:
        # Extract ID from original_image filename
        filename = item["original_image"].split("/")[-1]  # Get just the filename
        train_image_ids.append(filename)
    
    test_image_ids = []
    for item in test_data_original:
        # Extract ID from original_image filename
        filename = item["original_image"].split("/")[-1]  # Get just the filename
        test_image_ids.append(filename)

    with open('/fs-computility/niuyazhe/lixueyan/meme/dataset-meme-rewardmodel/Eimages_train_ids.jsonl', 'w') as f:
        json.dump(train_image_ids, f)

    with open('/fs-computility/niuyazhe/lixueyan/meme/dataset-meme-rewardmodel/Eimages_test_ids.jsonl', 'w') as f:
        json.dump(test_image_ids, f)

if __name__ == '__main__':
    NAME_list = ['object_add'] # 'text_replaced', 'lowperformancememe', 'irrelevantmeme', 'boringmeme', 'boring_detailed'
    TYPE_list = ['cross', '']

    mask_dict = { # 0: mask, 1: no mask, first: humor, second: relate
        'text_replaced': [1, 1], # text replaced, both humor and relate no mask
        'lowperformancememe': [1, 0], # low performance meme, humor no mask, relate mask
        'irrelevantmeme': [0, 1], # irrelevant meme, humor mask, relate no mask
        'boringmeme': [1, 0] # boring meme, humor no mask, relate mask
    }

    for NAME in NAME_list:
        for TYPE in TYPE_list:
            if NAME == 'lowperformancememe':
                dataset = f'/fs-computility/niuyazhe/lixueyan/meme/memetrash/{NAME}.jsonl'
            elif NAME == 'text_replaced' or NAME == 'boring_detailed':
                dataset = f'/fs-computility/niuyazhe/lixueyan/meme/memetrash/Eimages_{NAME}.json'
            else:
                # dataset = f'/fs-computility/niuyazhe/lixueyan/meme/memetrash/{NAME}.json'
                dataset = "/fs-computility/niuyazhe/shared/meme/data/meme/Eimages/Eimages_object_2.jsonl"  


            original_dataset = '/fs-computility/niuyazhe/lixueyan/jmj/DIlab/meme/memetrash/processed_dections_Eimage_UPDATED.json'
            train_image_ids = load_data_jsonl('/fs-computility/niuyazhe/lixueyan/meme/dataset-meme-rewardmodel/Eimages_train_ids.jsonl')
            test_image_ids = load_data_jsonl('/fs-computility/niuyazhe/lixueyan/meme/dataset-meme-rewardmodel/Eimages_test_ids.jsonl')

            # split_train_test_original(original_dataset)

            if TYPE != '':
                dataset_path_train =f'/fs-computility/niuyazhe/lixueyan/meme/dataset-meme-rewardmodel/{NAME}_{TYPE}/Ejson/{NAME}_{TYPE}_train.jsonl'
                dataset_path_test = f'/fs-computility/niuyazhe/lixueyan/meme/dataset-meme-rewardmodel/{NAME}_{TYPE}/Ejson/{NAME}_{TYPE}_test.jsonl'
                json_path_train = f'/fs-computility/niuyazhe/lixueyan/meme/dataset-meme-rewardmodel/{NAME}_{TYPE}/{NAME}_{TYPE}_train.jsonl'
                json_path_test = f'/fs-computility/niuyazhe/lixueyan/meme/dataset-meme-rewardmodel/{NAME}_{TYPE}/{NAME}_{TYPE}_test.jsonl'

            else:
                dataset_path_train =f'/fs-computility/niuyazhe/lixueyan/meme/dataset-meme-rewardmodel/{NAME}/Ejson/{NAME}_train.jsonl'
                dataset_path_test = f'/fs-computility/niuyazhe/lixueyan/meme/dataset-meme-rewardmodel/{NAME}/Ejson/{NAME}_test.jsonl'
                json_path_train = f'/fs-computility/niuyazhe/lixueyan/meme/dataset-meme-rewardmodel/{NAME}/{NAME}_train.jsonl'
                json_path_test = f'/fs-computility/niuyazhe/lixueyan/meme/dataset-meme-rewardmodel/{NAME}/{NAME}_test.jsonl'

            train_path = f'/fs-computility/niuyazhe/lixueyan/meme/dataset-meme-rewardmodel/{NAME}/raw_data/train.json'
            test_path = f'/fs-computility/niuyazhe/lixueyan/meme/dataset-meme-rewardmodel/{NAME}/raw_data/test.json'


            ensure_dir_exists(dataset_path_train)
            ensure_dir_exists(dataset_path_test)
            ensure_dir_exists(json_path_train)
            ensure_dir_exists(json_path_test)
            ensure_dir_exists(train_path)
            ensure_dir_exists(test_path)

            
            # # Now load the current dataset
            # if NAME == 'object_add':
            #     data = load_data_jsonl(dataset)
            # else:
            #     data = load_data(dataset)
            
            # # Process train data based on original split
            # train_data_list = []
            # test_data_list = []
            
            # for d in data:
            #     pos_neg = random.choice(["pos", "neg"])
                
            #     # Extract text lengths
            #     original_image_length = 0
            #     new_image_length = 0
                
            #     # Calculate text length for new image from detections
            #     if "detections" in d:
            #         for detection in d["detections"]:
            #             if "text" in detection:
            #                 new_image_length += len(detection["text"])
                
            #     # Find original image in original dataset to get its text length
            #     original_filename = d["original_image"].split("/")[-1]
            #     for orig_item in load_data(original_dataset):
            #         if orig_item["image_path"].split("/")[-1] == original_filename:
            #             if "detections" in orig_item:
            #                 for detection in orig_item["detections"]:
            #                     if "text" in detection:
            #                         original_image_length += len(detection["text"])
            #             break
                
            #     # Create data dictionary with text lengths
            #     if pos_neg == "pos":
            #         data_dict = {"image_list": [d["original_image"], d["new_image"]], 
            #                     "label": 0, 
            #                     "text_lengths": [original_image_length, new_image_length]}
            #     else:
            #         data_dict = {"image_list": [d["new_image"], d["original_image"]], 
            #                     "label": 1, 
            #                     "text_lengths": [new_image_length, original_image_length]}
                
            #     # Get the filename from the original image path
            #     filename = d["original_image"].split("/")[-1]

            #     # only for object changed
            #     filename = filename.replace('(','').replace(')','').replace(' ','')

            #     # breakpoint()
                
            #     # Assign to train or test based on the original split
            #     if filename in train_image_ids[0]:
            #         train_data_list.append(data_dict)
            #     else:
            #         test_data_list.append(data_dict)

            # print(len(train_data_list), len(test_data_list))
            # # Save processed data
            # with open(train_path, 'w') as f:
            #     json.dump(train_data_list, f)

            # with open(test_path, 'w') as f:
            #     json.dump(test_data_list, f)

            # exit()

            # Build datasets
            train_data = load_data(train_path)
            test_data = load_data(test_path)

            if 'meme' in NAME:
                name = NAME[:-4]
            else:
                name = NAME
            
            if TYPE == '':
                length_train = build_dataset(train_data, dataset_path_train)
                build_json([dataset_path_train], [length_train], [name], json_path_train)
                length_test = build_dataset(test_data, dataset_path_test)
                build_json([dataset_path_test], [length_test], [name], json_path_test)
                
            elif TYPE == 'cross':
                length_train = build_dataset_cross(train_data, dataset_path_train, NAME)
                build_json([dataset_path_train], [length_train], [name+'_'+TYPE], json_path_train)
                length_test = build_dataset_cross(test_data, dataset_path_test, NAME)
                build_json([dataset_path_test], [length_test], [name+'_'+TYPE], json_path_test)

            elif TYPE == 'align_multihead':
                length_train = build_dataset_multihead(train_data, dataset_path_train, mask_dict[NAME])
                build_json([dataset_path_train], [length_train], [name], json_path_train)
                length_test = build_dataset_multihead(test_data, dataset_path_test, mask_dict[NAME])
                build_json([dataset_path_test], [length_test], [name], json_path_test)
            elif TYPE == 'cross_multihead':
                length_train = build_dataset_cross_multihead(train_data, dataset_path_train, NAME, mask_dict[NAME])
                build_json([dataset_path_train], [length_train], [name+'_'+TYPE], json_path_train)
                length_test = build_dataset_cross_multihead(test_data, dataset_path_test, NAME, mask_dict[NAME])
                build_json([dataset_path_test], [length_test], [name+'_'+TYPE], json_path_test)

            print(f'Done {NAME} {TYPE}')