# Adopted from lmms-eval from https://github.com/EvolvingLMMs-Lab/lmms-eval. Below is the original copyright:
#
#    Licensed under the Apache License, Version 2.0 (the "License");
#    you may not use this file except in compliance with the License.
#    You may obtain a copy of the License at
#
#        http://www.apache.org/licenses/LICENSE-2.0
#
#    Unless required by applicable law or agreed to in writing, software
#    distributed under the License is distributed on an "AS IS" BASIS,
#    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
#    See the License for the specific language governing permissions and
#    limitations under the License.

# This file was originally obtained from:
# https://github.com/EvolvingLMMs-Lab/lmms-eval/blob/main/lmms_eval/tasks/jmmmu/utils.py
#
# Minor modification by Akira Kinoshita on 2025-07-24:

from PIL import Image
import io
import re
from collections import defaultdict

def jgraphqa_doc_to_visual(doc):
    img_data = doc["image"]["bytes"]
    img = Image.open(io.BytesIO(img_data))
    return [img.convert("RGB")]


def jgraphqa_doc_to_text(doc, lmms_eval_specific_kwargs):
    question = doc["question"]
    pre_prompt = lmms_eval_specific_kwargs["pre_prompt"]
    post_prompt = lmms_eval_specific_kwargs["post_prompt"]
    return f"{pre_prompt}{question}{post_prompt}"


def jgraphqa_process_results(doc, results):
    pred = results[0]
    parsed_pred = parse_open_response(pred)
    id = doc["id"]
    jgraphqa_acc = {"id": id, "subdomain": doc["type"], "answer": doc["answer"], "parsed_pred": parsed_pred}
    return {
        "jgraphqa_acc": jgraphqa_acc,
        "submission": {
            id: pred,
        },
    }


def jgraphqa_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_jgraphqa(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, 5),
        }
        # 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"], 5),
            }
    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, 5),
    }
    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 = {
    "GENERAL": [
        "line",
        "table",
        "bar",
        "circle",
    ],
}


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_jgraphqa(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["answer"]
        pred_i = sample["parsed_pred"]
        correct = eval_open(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 extract_numbers(string):
    """
    Exact all forms of numbers from a string with regex.
    """
    # 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_simple = r'-?\d+(?:\.\d+)?(?![eE][+-]?\d+)'
    pattern_simple = r"-?(?:\d+\.\d+|\.\d+|\d+)(?![eE][+-]?\d+)(?![,\d])"
    # Pattern for Japanese numbers
    pattern_japanese = r"(\d+)(?:つ|個|度|円|人|年|匹|台|%)"

    # 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)
    # Extract Japanese numbers
    numbers_japanese = re.findall(pattern_japanese, string)
    # Combine all extracted numbers
    all_numbers = numbers_with_commas + numbers_scientific + numbers_simple + numbers_japanese
    return all_numbers


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
    """
    string = string.strip()
    string = string.replace(",", "")
    string = string.replace(" ", "")
    string = string.replace("　", "")
    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("。")
        sub_responses = re.split(r"[。！？.]\s*|\n", response)

        indicators_of_keys = ["よって", "よって、", "答えは", "答えは、", "最終的に", "最終的に、", "解答は", "解答は、" "回答は", "回答は、"]
        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