import ast
import json
import os
import random
import re
from collections import defaultdict

import numpy as np

temp_path = './eval/mmmu_pro/options.jsonl'
f = open(temp_path, 'r')
lines = [json.loads(line) for line in f.readlines()]
id2options = {line['id']: line['options'] for line in lines}


def mmmu_process_results(results):
    pred = results['response']
    if isinstance(pred, dict):
        pred = ''

    try:
        index2ans, all_choices = get_multi_choice_info(ast.literal_eval(str(results['options'])))
        parsed_pred = parse_multi_choice_response(pred, all_choices, index2ans)
    except:
        index2ans, all_choices = get_multi_choice_info(ast.literal_eval(str(id2options[results['id']])))
        parsed_pred = parse_multi_choice_response(pred, all_choices, index2ans)

    id = results['id']
    if parsed_pred == results['answer']:
        if_right = True
    else:
        if_right = False

    results['pred_indexs'] = parsed_pred
    results['if_right'] = if_right

    return results


def extract_subset_name(input_string):
    # Define a regex pattern to match "validation_" at the beginning and "_<number>" at the end
    split = input_string.split('_')[0]
    pattern = re.compile(rf'^{split}_(.+?)_\d+$')
    match = pattern.search(input_string)
    if match:
        return match.group(1)
    else:
        raise ValueError(f'No match found in "{input_string}"')


def mmmu_aggregate_results(results):
    evaluation_result = {}
    subset_to_eval_samples = defaultdict(list)
    for result in results:
        subset_to_eval_samples[result['subdomain']].append(result)
    for subset, sub_eval_samples in subset_to_eval_samples.items():
        judge_dict, metric_dict = evaluate_mmmu(sub_eval_samples)
        metric_dict.update({'num_example': len(sub_eval_samples)})
        evaluation_result[subset] = metric_dict
    printable_results = {}
    for domain, in_domain_cats in DOMAIN_CAT2SUB_CAT.items():
        in_domain_cat_results = {}
        for cat_name in in_domain_cats:
            if cat_name in evaluation_result.keys():
                in_domain_cat_results[cat_name] = evaluation_result[cat_name]
            else:
                pass
        in_domain_ins_acc = calculate_ins_level_acc(in_domain_cat_results)
        in_domain_data_num = sum([cat_results['num_example'] for cat_results in in_domain_cat_results.values()])
        printable_results['Overall-' + domain] = {
            'num': int(in_domain_data_num),
            'acc': round(in_domain_ins_acc, 3),
        }
        # add sub category
        for cat_name, cat_results in in_domain_cat_results.items():
            printable_results[cat_name] = {
                'num': int(cat_results['num_example']),
                'acc': round(cat_results['acc'], 3),
            }
    all_ins_acc = calculate_ins_level_acc(evaluation_result)
    printable_results['Overall'] = {
        'num': sum([cat_results['num_example'] for cat_results in evaluation_result.values()]),
        'acc': round(all_ins_acc, 3),
    }
    print(printable_results)
    return printable_results['Overall']['acc']


##################
# Helper functions written by official MMMU repo.
##################


def calculate_ins_level_acc(results):
    """Calculate the instruction level accuracy for given Subject results
    https://github.com/MMMU-Benchmark/MMMU/blob/51ce7f3e829c16bb44bc5445782686b4c3508794/eval/eval_utils.py#L246
    """
    acc = 0
    ins_num = 0
    for cat_results in results.values():
        acc += cat_results['acc'] * cat_results['num_example']
        ins_num += cat_results['num_example']
    if ins_num == 0:
        return 0
    return acc / ins_num


DOMAIN_CAT2SUB_CAT = {
    'Art and Design': ['Art', 'Art_Theory', 'Design', 'Music'],
    'Business': ['Accounting', 'Economics', 'Finance', 'Manage', 'Marketing'],
    'Science': [
        'Biology',
        'Chemistry',
        'Geography',
        'Math',
        'Physics',
    ],
    'Health and Medicine': [
        'Basic_Medical_Science',
        'Clinical_Medicine',
        'Diagnostics_and_Laboratory_Medicine',
        'Pharmacy',
        'Public_Health',
    ],
    'Humanities and Social Science': [
        'History',
        'Literature',
        'Sociology',
        'Psychology',
    ],
    'Tech and Engineering': [
        'Agriculture',
        'Architecture_and_Engineering',
        'Computer_Science',
        'Electronics',
        'Energy_and_Power',
        'Materials',
        'Mechanical_Engineering',
    ],
}


def eval_multi_choice(gold_i, pred_i):
    """
    Evaluate a multiple choice instance.
    https://github.com/MMMU-Benchmark/MMMU/blob/51ce7f3e829c16bb44bc5445782686b4c3508794/eval/eval_utils.py#L175
    """
    correct = False
    # only they are exactly the same, we consider it as correct
    if isinstance(gold_i, list):
        for answer in gold_i:
            if answer == pred_i:
                correct = True
                break
    else:  # gold_i is a string
        if gold_i == pred_i:
            correct = True
    return correct


def eval_open(gold_i, pred_i):
    """
    Evaluate an open question instance
    https://github.com/MMMU-Benchmark/MMMU/blob/51ce7f3e829c16bb44bc5445782686b4c3508794/eval/eval_utils.py#L191
    """
    correct = False
    if isinstance(gold_i, list):
        # use float to avoid trivial matches
        norm_answers = []
        for answer in gold_i:
            norm_answers.extend(normalize_str(answer))
    else:
        norm_answers = normalize_str(gold_i)
    for pred in pred_i:  # pred is already normalized in parse response phase
        if isinstance(pred, str):  # if it's a string, then find if ans in the pred_i
            for norm_ans in norm_answers:
                # only see if the string answer in the string pred
                if isinstance(norm_ans, str) and norm_ans in pred:
                    if not correct:
                        correct = True
                    break
        else:  # it's a float number
            if pred in norm_answers:
                if not correct:
                    correct = True
                break
    return correct


def evaluate_mmmu(samples):
    """
    Batch evaluation for multiple choice and open questions.
    https://github.com/MMMU-Benchmark/MMMU/blob/51ce7f3e829c16bb44bc5445782686b4c3508794/eval/eval_utils.py#L219
    """
    pred_correct = 0
    judge_dict = dict()
    for sample in samples:
        gold_i = sample['answers']
        pred_i = sample['parsed_pred']

        correct = eval_multi_choice(gold_i, pred_i)

        if correct:
            judge_dict[sample['id']] = 'Correct'
            pred_correct += 1
        else:
            judge_dict[sample['id']] = 'Wrong'

    if len(samples) == 0:
        return {'acc': 0}
    return judge_dict, {'acc': pred_correct / len(samples)}


def parse_multi_choice_responses(response):
    pred_indexs = []
    return pred_indexs


def parse_multi_choice_response(response, all_choices, index2ans):
    """
    Parse the prediction from the generated response.
    Return the predicted index, e.g., A, B, C, D.
    https://github.com/MMMU-Benchmark/MMMU/blob/51ce7f3e829c16bb44bc5445782686b4c3508794/eval/eval_utils.py#L10
    """
    last_answer_pos = response.rfind('Answer:')
    if last_answer_pos != -1:
        # Extract the string after "Answer:"
        answer_str = response[last_answer_pos + len('Answer:'):].strip()

        # Find a unique match in the options
        matching_options = [option for option in all_choices if option in answer_str]

        # If a unique match is found, return that option
        if len(matching_options) == 1:
            return matching_options[0]

    if isinstance(response, str):
        for char in [',', '.', '!', '?', ';', ':', "'"]:
            response = response.strip(char)
        response = ' ' + response + ' '  # add space to avoid partial match
    else:
        print(response)
        response = ''

    index_ans = True
    ans_with_brack = False
    candidates = []
    for choice in all_choices:  # e.g., (A) (B) (C) (D)
        if f'({choice})' in response:
            candidates.append(choice)
            ans_with_brack = True

    if len(candidates) == 0:
        for choice in all_choices:  # e.g., A B C D
            if f'{choice} ' in response:
                candidates.append(choice)

    if len(candidates) == 0:
        for choice in all_choices:  # e.g., A. B. C. D.
            if f'{choice}.' in response:
                candidates.append(choice)

    # if all above doesn't get candidates, check if the content is larger than 5 tokens and try to parse the example
    if len(candidates) == 0 and len(response.split()) > 5:
        for index, ans in index2ans.items():
            if ans.lower() in response.lower():
                candidates.append(index)
                index_ans = False  # it's content ans.

    if len(candidates) == 0:  # still not get answer, randomly choose one.
        pred_index = random.choice(all_choices)
    elif len(candidates) > 1:
        start_indexes = []
        if index_ans:
            if ans_with_brack:
                for can in candidates:
                    index = response.rfind(f'({can})')
                    start_indexes.append(index)  # -1 will be ignored anyway
                # start_indexes = [generated_response.index(f'({can})') for can in candidates]
            else:
                for can in candidates:
                    index = response.rfind(f' {can} ')
                    start_indexes.append(index)
        else:
            for can in candidates:
                index = response.lower().rfind(index2ans[can].lower())
                start_indexes.append(index)
        # get the last one
        pred_index = candidates[np.argmax(start_indexes)]
    else:  # if only one candidate, use it.
        pred_index = candidates[0]

    return pred_index


def extract_numbers(string):
    """
    Exact all forms of numbers from a string with regex.
    https://github.com/MMMU-Benchmark/MMMU/blob/51ce7f3e829c16bb44bc5445782686b4c3508794/eval/eval_utils.py#L100
    """
    # Pattern for numbers with commas
    pattern_commas = r'-?\b\d{1,3}(?:,\d{3})+\b'
    # Pattern for scientific notation
    pattern_scientific = r'-?\d+(?:\.\d+)?[eE][+-]?\d+'
    # Pattern for simple numbers without commas
    pattern_simple = r'-?(?:\d+\.\d+|\.\d+|\d+\b)(?![eE][+-]?\d+)(?![,\d])'

    # Extract numbers with commas
    numbers_with_commas = re.findall(pattern_commas, string)
    # Extract numbers in scientific notation
    numbers_scientific = re.findall(pattern_scientific, string)
    # Extract simple numbers without commas
    numbers_simple = re.findall(pattern_simple, string)

    # Combine all extracted numbersz
    all_numbers = numbers_with_commas + numbers_scientific + numbers_simple
    return all_numbers


def check_is_number(string):
    """
    Check if the given string a number.
    https://github.com/MMMU-Benchmark/MMMU/blob/51ce7f3e829c16bb44bc5445782686b4c3508794/eval/eval_utils.py#L65
    """
    try:
        float(string.replace(',', ''))
        return True
    except ValueError:
        # check if there's comma inside
        return False


def normalize_str(string):
    """
    Normalize the str to lower case and make them float numbers if possible.
    https://github.com/MMMU-Benchmark/MMMU/blob/51ce7f3e829c16bb44bc5445782686b4c3508794/eval/eval_utils.py#L76
    """
    # check if characters in the string

    # if number, numerize it.
    string = string.strip()

    is_number = check_is_number(string)

    if is_number:
        string = string.replace(',', '')
        string = float(string)
        # leave 2 decimal
        string = round(string, 2)
        return [string]
    else:  # it's likely to be a string
        # lower it
        string = string.lower()
        if len(string) == 1:
            return [' ' + string, string + ' ']  # avoid trivial matches
        return [string]


def parse_open_response(response):
    """
    Parse the prediction from the generated response.
    Return a list of predicted strings or numbers.
    https://github.com/MMMU-Benchmark/MMMU/blob/51ce7f3e829c16bb44bc5445782686b4c3508794/eval/eval_utils.py#L122
    """

    # content = content.strip("\n").strip(".").strip(" ")
    def get_key_subresponses(response):
        key_responses = []
        response = response.strip().strip('.').lower()
        sub_responses = re.split(r'\.\s(?=[A-Z])|\n', response)
        indicators_of_keys = [
            'could be ',
            'so ',
            'is ',
            'thus ',
            'therefore ',
            'final ',
            'answer ',
            'result ',
        ]
        key_responses = []
        for index, resp in enumerate(sub_responses):
            # if last one, accept it's an equation (the entire response can be just one sentence with equation)
            if index == len(sub_responses) - 1:
                indicators_of_keys.extend(['='])
            shortest_key_response = None  # the shortest response that may contain the answer (tail part of the response)
            for indicator in indicators_of_keys:
                if indicator in resp:
                    if not shortest_key_response:
                        shortest_key_response = resp.split(indicator)[-1].strip()
                    else:
                        if len(resp.split(indicator)[-1].strip()) < len(shortest_key_response):
                            shortest_key_response = resp.split(indicator)[-1].strip()
                    # key_responses.append(resp.split(indicator)[1].strip())

            if shortest_key_response:
                # and it's not trivial
                if shortest_key_response.strip() not in [
                    ':',
                    ',',
                    '.',
                    '!',
                    '?',
                    ';',
                    ':',
                    "'",
                ]:
                    key_responses.append(shortest_key_response)
        if len(key_responses) == 0:  # did not found any
            return [response]
        return key_responses

    # pdb.set_trace()
    key_responses = get_key_subresponses(response)

    pred_list = key_responses.copy()  # keep the original string response
    for resp in key_responses:
        pred_list.extend(extract_numbers(resp))

    tmp_pred_list = []
    for i in range(len(pred_list)):
        tmp_pred_list.extend(normalize_str(pred_list[i]))
    pred_list = tmp_pred_list

    # remove duplicates
    pred_list = list(set(pred_list))

    return pred_list


def get_multi_choice_info(options):
    """
    Given the list of options for multiple choice question
    Return the index2ans and all_choices
    https://github.com/MMMU-Benchmark/MMMU/blob/51ce7f3e829c16bb44bc5445782686b4c3508794/eval/data_utils.py#L54
    """

    start_chr = 'A'
    all_choices = []
    index2ans = {}
    for i, option in enumerate(options):
        index2ans[chr(ord(start_chr) + i)] = option
        all_choices.append(chr(ord(start_chr) + i))

    return index2ans, all_choices


NUM = 1730


def check_files(input_dir):
    pattern = re.compile(
        r'(?P<model_name>.+)_(?P<setting>standard \(\d+ options\)|vision)_(?P<method>cot|direct)\.jsonl')
    for file_name in os.listdir(input_dir):
        match = pattern.match(file_name)
        if match:
            model_name = match.group('model_name')
            method = match.group('method')
            setting = match.group('setting')
            file_path = os.path.join(input_dir, file_name)
            # print(file_path)

            with open(file_path, 'r', encoding='utf-8') as infile:
                results = [json.loads(data) for data in infile]

            if len(results) != NUM:
                print(f'Error: {file_path} has {len(results)} results, expected {NUM}')
                continue

            processed_results = []
            true_nums = 0
            false_nums = 0

            for i, result in enumerate(results):
                new_data = mmmu_process_results(result)
                processed_results.append(new_data)

                if new_data['if_right']:
                    true_nums += 1
                else:
                    false_nums += 1

            # Calculate and output the accuracy
            total = true_nums + false_nums
            acc = true_nums / total * 100 if total > 0 else 0
            print(f'Model: {model_name:<15} Method: {method:<8} Setting: {setting:<8} - Accuracy: {acc:>6.2f}%')

            # Write the processed results back to the file
            with open(file_path, 'w', encoding='utf-8') as outfile:
                for item in processed_results:
                    outfile.write(json.dumps(item) + '\n')


if __name__ == '__main__':
    input_directory = './eval/mmmu_pro/results'  # Replace with your input directory
    check_files(input_directory)