#!/usr/bin/env python3
# -*- encoding: utf-8 -*-
# Copyright FunASR (https://github.com/alibaba-damo-academy/FunASR). All Rights Reserved.
#  MIT License  (https://opensource.org/licenses/MIT)

import json
import time
import copy
import torch
import random
import string
import logging
import os.path
import numpy as np
from tqdm import tqdm

from omegaconf import DictConfig, ListConfig
from funasr.utils.misc import deep_update
from funasr.register import tables
from funasr.utils.load_utils import load_bytes
from funasr.download.file import download_from_url
from funasr.utils.timestamp_tools import timestamp_sentence
from funasr.utils.timestamp_tools import timestamp_sentence_en
from funasr.download.download_model_from_hub import download_model
from funasr.utils.vad_utils import slice_padding_audio_samples
from funasr.utils.vad_utils import merge_vad
from funasr.utils.load_utils import load_audio_text_image_video
from funasr.train_utils.set_all_random_seed import set_all_random_seed
from funasr.train_utils.load_pretrained_model import load_pretrained_model
from funasr.utils import export_utils
from funasr.utils import misc

try:
    from funasr.models.campplus.utils import sv_chunk, postprocess, distribute_spk
    from funasr.models.campplus.cluster_backend import ClusterBackend
except:
    pass


def prepare_data_iterator(data_in, input_len=None, data_type=None, key=None):
    """ """
    data_list = []
    key_list = []
    filelist = [".scp", ".txt", ".json", ".jsonl", ".text"]

    chars = string.ascii_letters + string.digits
    if isinstance(data_in, str):
        if data_in.startswith("http://") or data_in.startswith("https://"):  # url
            data_in = download_from_url(data_in)

    if isinstance(data_in, str) and os.path.exists(
        data_in
    ):  # wav_path; filelist: wav.scp, file.jsonl;text.txt;
        _, file_extension = os.path.splitext(data_in)
        file_extension = file_extension.lower()
        if file_extension in filelist:  # filelist: wav.scp, file.jsonl;text.txt;
            with open(data_in, encoding="utf-8") as fin:
                for line in fin:
                    key = "rand_key_" + "".join(random.choice(chars) for _ in range(13))
                    if data_in.endswith(".jsonl"):  # file.jsonl: json.dumps({"source": data})
                        lines = json.loads(line.strip())
                        data = lines["source"]
                        key = data["key"] if "key" in data else key
                    else:  # filelist, wav.scp, text.txt: id \t data or data
                        lines = line.strip().split(maxsplit=1)
                        data = lines[1] if len(lines) > 1 else lines[0]
                        key = lines[0] if len(lines) > 1 else key

                    data_list.append(data)
                    key_list.append(key)
        else:
            if key is None:
                # key = "rand_key_" + "".join(random.choice(chars) for _ in range(13))
                key = misc.extract_filename_without_extension(data_in)
            data_list = [data_in]
            key_list = [key]
    elif isinstance(data_in, (list, tuple)):
        if data_type is not None and isinstance(data_type, (list, tuple)):  # mutiple inputs
            data_list_tmp = []
            for data_in_i, data_type_i in zip(data_in, data_type):
                key_list, data_list_i = prepare_data_iterator(
                    data_in=data_in_i, data_type=data_type_i
                )
                data_list_tmp.append(data_list_i)
            data_list = []
            for item in zip(*data_list_tmp):
                data_list.append(item)
        else:
            # [audio sample point, fbank, text]
            data_list = data_in
            key_list = []
            for data_i in data_in:
                if isinstance(data_i, str) and os.path.exists(data_i):
                    key = misc.extract_filename_without_extension(data_i)
                else:
                    if key is None:
                        key = "rand_key_" + "".join(random.choice(chars) for _ in range(13))
                key_list.append(key)

    else:  # raw text; audio sample point, fbank; bytes
        if isinstance(data_in, bytes):  # audio bytes
            data_in = load_bytes(data_in)
        if key is None:
            key = "rand_key_" + "".join(random.choice(chars) for _ in range(13))
        data_list = [data_in]
        key_list = [key]

    return key_list, data_list


class AutoModel:

    def __init__(self, **kwargs):

        try:
            from funasr.utils.version_checker import check_for_update

            check_for_update(disable=kwargs.get("disable_update", False))
        except:
            pass

        log_level = getattr(logging, kwargs.get("log_level", "INFO").upper())
        logging.basicConfig(level=log_level)

        model, kwargs = self.build_model(**kwargs)

        # if vad_model is not None, build vad model else None
        vad_model = kwargs.get("vad_model", None)
        vad_kwargs = {} if kwargs.get("vad_kwargs", {}) is None else kwargs.get("vad_kwargs", {})
        if vad_model is not None:
            logging.info("Building VAD model.")
            vad_kwargs["model"] = vad_model
            vad_kwargs["model_revision"] = kwargs.get("vad_model_revision", "master")
            vad_kwargs["device"] = kwargs["device"]
            vad_model, vad_kwargs = self.build_model(**vad_kwargs)

        # if punc_model is not None, build punc model else None
        punc_model = kwargs.get("punc_model", None)
        punc_kwargs = {} if kwargs.get("punc_kwargs", {}) is None else kwargs.get("punc_kwargs", {})
        if punc_model is not None:
            logging.info("Building punc model.")
            punc_kwargs["model"] = punc_model
            punc_kwargs["model_revision"] = kwargs.get("punc_model_revision", "master")
            punc_kwargs["device"] = kwargs["device"]
            punc_model, punc_kwargs = self.build_model(**punc_kwargs)

        # if spk_model is not None, build spk model else None
        spk_model = kwargs.get("spk_model", None)
        spk_kwargs = {} if kwargs.get("spk_kwargs", {}) is None else kwargs.get("spk_kwargs", {})
        cb_kwargs = {} if spk_kwargs.get("cb_kwargs", {}) is None else spk_kwargs.get("cb_kwargs", {})
        if spk_model is not None:
            logging.info("Building SPK model.")
            spk_kwargs["model"] = spk_model
            spk_kwargs["model_revision"] = kwargs.get("spk_model_revision", "master")
            spk_kwargs["device"] = kwargs["device"]
            spk_model, spk_kwargs = self.build_model(**spk_kwargs)
            self.cb_model = ClusterBackend(**cb_kwargs).to(kwargs["device"])
            spk_mode = kwargs.get("spk_mode", "punc_segment")
            if spk_mode not in ["default", "vad_segment", "punc_segment"]:
                logging.error("spk_mode should be one of default, vad_segment and punc_segment.")
            self.spk_mode = spk_mode

        self.kwargs = kwargs
        self.model = model
        self.vad_model = vad_model
        self.vad_kwargs = vad_kwargs
        self.punc_model = punc_model
        self.punc_kwargs = punc_kwargs
        self.spk_model = spk_model
        self.spk_kwargs = spk_kwargs
        self.model_path = kwargs.get("model_path")

    @staticmethod
    def build_model(**kwargs):
        assert "model" in kwargs
        if "model_conf" not in kwargs:
            logging.info("download models from model hub: {}".format(kwargs.get("hub", "ms")))
            kwargs = download_model(**kwargs)

        set_all_random_seed(kwargs.get("seed", 0))

        device = kwargs.get("device", "cuda")
        if not torch.cuda.is_available() or kwargs.get("ngpu", 1) == 0:
            device = "cpu"
            kwargs["batch_size"] = 1
        kwargs["device"] = device

        torch.set_num_threads(kwargs.get("ncpu", 4))

        # build tokenizer
        tokenizer = kwargs.get("tokenizer", None)
        kwargs["tokenizer"] = tokenizer
        kwargs["vocab_size"] = -1

        if tokenizer is not None:
            tokenizers = (
                tokenizer.split(",") if isinstance(tokenizer, str) else tokenizer
            )  # type of tokenizers is list!!!
            tokenizers_conf = kwargs.get("tokenizer_conf", {})
            tokenizers_build = []
            vocab_sizes = []
            token_lists = []

            ### === only for kws ===
            token_list_files = kwargs.get("token_lists", [])
            seg_dicts = kwargs.get("seg_dicts", [])
            ### === only for kws ===

            if not isinstance(tokenizers_conf, (list, tuple, ListConfig)):
                tokenizers_conf = [tokenizers_conf] * len(tokenizers)

            for i, tokenizer in enumerate(tokenizers):
                tokenizer_class = tables.tokenizer_classes.get(tokenizer)
                tokenizer_conf = tokenizers_conf[i]

                ### === only for kws ===
                if len(token_list_files) > 1:
                    tokenizer_conf["token_list"] = token_list_files[i]
                if len(seg_dicts) > 1:
                    tokenizer_conf["seg_dict"] = seg_dicts[i]
                ### === only for kws ===

                tokenizer = tokenizer_class(**tokenizer_conf)
                tokenizers_build.append(tokenizer)
                token_list = tokenizer.token_list if hasattr(tokenizer, "token_list") else None
                token_list = (
                    tokenizer.get_vocab() if hasattr(tokenizer, "get_vocab") else token_list
                )
                vocab_size = -1
                if token_list is not None:
                    vocab_size = len(token_list)

                if vocab_size == -1 and hasattr(tokenizer, "get_vocab_size"):
                    vocab_size = tokenizer.get_vocab_size()
                token_lists.append(token_list)
                vocab_sizes.append(vocab_size)

            if len(tokenizers_build) <= 1:
                tokenizers_build = tokenizers_build[0]
                token_lists = token_lists[0]
                vocab_sizes = vocab_sizes[0]

            kwargs["tokenizer"] = tokenizers_build
            kwargs["vocab_size"] = vocab_sizes
            kwargs["token_list"] = token_lists

        # build frontend
        frontend = kwargs.get("frontend", None)
        kwargs["input_size"] = None
        if frontend is not None:
            frontend_class = tables.frontend_classes.get(frontend)
            frontend = frontend_class(**kwargs.get("frontend_conf", {}))
            kwargs["input_size"] = (
                frontend.output_size() if hasattr(frontend, "output_size") else None
            )
        kwargs["frontend"] = frontend
        # build model
        model_class = tables.model_classes.get(kwargs["model"])
        assert model_class is not None, f'{kwargs["model"]} is not registered'
        model_conf = {}
        deep_update(model_conf, kwargs.get("model_conf", {}))
        deep_update(model_conf, kwargs)
        model = model_class(**model_conf)

        # init_param
        init_param = kwargs.get("init_param", None)
        if init_param is not None:
            if os.path.exists(init_param):
                logging.info(f"Loading pretrained params from {init_param}")
                load_pretrained_model(
                    model=model,
                    path=init_param,
                    ignore_init_mismatch=kwargs.get("ignore_init_mismatch", True),
                    oss_bucket=kwargs.get("oss_bucket", None),
                    scope_map=kwargs.get("scope_map", []),
                    excludes=kwargs.get("excludes", None),
                )
            else:
                print(f"error, init_param does not exist!: {init_param}")

        # fp16
        if kwargs.get("fp16", False):
            model.to(torch.float16)
        elif kwargs.get("bf16", False):
            model.to(torch.bfloat16)
        model.to(device)

        if not kwargs.get("disable_log", True):
            tables.print()

        return model, kwargs

    def __call__(self, *args, **cfg):
        kwargs = self.kwargs
        deep_update(kwargs, cfg)
        res = self.model(*args, kwargs)
        return res

    def generate(self, input, input_len=None, **cfg):
        if self.vad_model is None:
            return self.inference(input, input_len=input_len, **cfg)

        else:
            return self.inference_with_vad(input, input_len=input_len, **cfg)

    def inference(self, input, input_len=None, model=None, kwargs=None, key=None, **cfg):
        kwargs = self.kwargs if kwargs is None else kwargs
        if "cache" in kwargs:
            kwargs.pop("cache")
        deep_update(kwargs, cfg)
        model = self.model if model is None else model
        model.eval()

        batch_size = kwargs.get("batch_size", 1)
        # if kwargs.get("device", "cpu") == "cpu":
        #     batch_size = 1

        key_list, data_list = prepare_data_iterator(
            input, input_len=input_len, data_type=kwargs.get("data_type", None), key=key
        )

        speed_stats = {}
        asr_result_list = []
        num_samples = len(data_list)
        disable_pbar = self.kwargs.get("disable_pbar", False)
        pbar = (
            tqdm(colour="blue", total=num_samples, dynamic_ncols=True) if not disable_pbar else None
        )
        time_speech_total = 0.0
        time_escape_total = 0.0
        for beg_idx in range(0, num_samples, batch_size):
            end_idx = min(num_samples, beg_idx + batch_size)
            data_batch = data_list[beg_idx:end_idx]
            key_batch = key_list[beg_idx:end_idx]
            batch = {"data_in": data_batch, "key": key_batch}

            if (end_idx - beg_idx) == 1 and kwargs.get("data_type", None) == "fbank":  # fbank
                batch["data_in"] = data_batch[0]
                batch["data_lengths"] = input_len

            time1 = time.perf_counter()
            with torch.no_grad():
                res = model.inference(**batch, **kwargs)
                if isinstance(res, (list, tuple)):
                    results = res[0] if len(res) > 0 else [{"text": ""}]
                    meta_data = res[1] if len(res) > 1 else {}
            time2 = time.perf_counter()

            asr_result_list.extend(results)

            # batch_data_time = time_per_frame_s * data_batch_i["speech_lengths"].sum().item()
            batch_data_time = meta_data.get("batch_data_time", -1)
            time_escape = time2 - time1
            speed_stats["load_data"] = meta_data.get("load_data", 0.0)
            speed_stats["extract_feat"] = meta_data.get("extract_feat", 0.0)
            speed_stats["forward"] = f"{time_escape:0.3f}"
            speed_stats["batch_size"] = f"{len(results)}"
            speed_stats["rtf"] = f"{(time_escape) / batch_data_time:0.3f}"
            description = f"{speed_stats}, "
            if pbar:
                pbar.update(end_idx - beg_idx)
                pbar.set_description(description)
            time_speech_total += batch_data_time
            time_escape_total += time_escape

        if pbar:
            # pbar.update(1)
            pbar.set_description(f"rtf_avg: {time_escape_total/time_speech_total:0.3f}")
        torch.cuda.empty_cache()
        return asr_result_list

    def inference_with_vad(self, input, input_len=None, **cfg):
        kwargs = self.kwargs
        # step.1: compute the vad model
        deep_update(self.vad_kwargs, cfg)
        beg_vad = time.time()
        res = self.inference(
            input, input_len=input_len, model=self.vad_model, kwargs=self.vad_kwargs, **cfg
        )
        end_vad = time.time()

        #  FIX(gcf): concat the vad clips for sense vocie model for better aed
        if cfg.get("merge_vad", False):
            for i in range(len(res)):
                res[i]["value"] = merge_vad(
                    res[i]["value"], kwargs.get("merge_length_s", 15) * 1000
                )

        # step.2 compute asr model
        model = self.model
        deep_update(kwargs, cfg)
        batch_size = max(int(kwargs.get("batch_size_s", 300)) * 1000, 1)
        batch_size_threshold_ms = int(kwargs.get("batch_size_threshold_s", 60)) * 1000
        kwargs["batch_size"] = batch_size

        key_list, data_list = prepare_data_iterator(
            input, input_len=input_len, data_type=kwargs.get("data_type", None)
        )
        results_ret_list = []
        time_speech_total_all_samples = 1e-6

        beg_total = time.time()
        pbar_total = (
            tqdm(colour="red", total=len(res), dynamic_ncols=True)
            if not kwargs.get("disable_pbar", False)
            else None
        )
        for i in range(len(res)):
            key = res[i]["key"]
            vadsegments = res[i]["value"]
            input_i = data_list[i]
            fs = kwargs["frontend"].fs if hasattr(kwargs["frontend"], "fs") else 16000
            speech = load_audio_text_image_video(input_i, fs=fs, audio_fs=kwargs.get("fs", 16000))
            speech_lengths = len(speech)
            n = len(vadsegments)
            data_with_index = [(vadsegments[i], i) for i in range(n)]
            sorted_data = sorted(data_with_index, key=lambda x: x[0][1] - x[0][0])
            results_sorted = []

            if not len(sorted_data):
                results_ret_list.append({"key": key, "text": "", "timestamp": []})
                logging.info("decoding, utt: {}, empty speech".format(key))
                continue

            if len(sorted_data) > 0 and len(sorted_data[0]) > 0:
                batch_size = max(batch_size, sorted_data[0][0][1] - sorted_data[0][0][0])

            if kwargs["device"] == "cpu":
                batch_size = 0

            beg_idx = 0
            beg_asr_total = time.time()
            time_speech_total_per_sample = speech_lengths / 16000
            time_speech_total_all_samples += time_speech_total_per_sample

            # pbar_sample = tqdm(colour="blue", total=n, dynamic_ncols=True)

            all_segments = []
            max_len_in_batch = 0
            end_idx = 1
            for j, _ in enumerate(range(0, n)):
                # pbar_sample.update(1)
                sample_length = sorted_data[j][0][1] - sorted_data[j][0][0]
                potential_batch_length = max(max_len_in_batch, sample_length) * (j + 1 - beg_idx)
                # batch_size_ms_cum += sorted_data[j][0][1] - sorted_data[j][0][0]
                if (
                    j < n - 1
                    and sample_length < batch_size_threshold_ms
                    and potential_batch_length < batch_size
                ):
                    max_len_in_batch = max(max_len_in_batch, sample_length)
                    end_idx += 1
                    continue

                speech_j, speech_lengths_j = slice_padding_audio_samples(
                    speech, speech_lengths, sorted_data[beg_idx:end_idx]
                )
                results = self.inference(
                    speech_j, input_len=None, model=model, kwargs=kwargs, **cfg
                )
                if self.spk_model is not None:
                    # compose vad segments: [[start_time_sec, end_time_sec, speech], [...]]
                    for _b in range(len(speech_j)):
                        vad_segments = [
                            [
                                sorted_data[beg_idx:end_idx][_b][0][0] / 1000.0,
                                sorted_data[beg_idx:end_idx][_b][0][1] / 1000.0,
                                np.array(speech_j[_b]),
                            ]
                        ]
                        segments = sv_chunk(vad_segments)
                        all_segments.extend(segments)
                        speech_b = [i[2] for i in segments]
                        spk_res = self.inference(
                            speech_b, input_len=None, model=self.spk_model, kwargs=kwargs, **cfg
                        )
                        results[_b]["spk_embedding"] = spk_res[0]["spk_embedding"]
                beg_idx = end_idx
                end_idx += 1
                max_len_in_batch = sample_length
                if len(results) < 1:
                    continue
                results_sorted.extend(results)

            # end_asr_total = time.time()
            # time_escape_total_per_sample = end_asr_total - beg_asr_total
            # pbar_sample.update(1)
            # pbar_sample.set_description(f"rtf_avg_per_sample: {time_escape_total_per_sample / time_speech_total_per_sample:0.3f}, "
            #                      f"time_speech_total_per_sample: {time_speech_total_per_sample: 0.3f}, "
            #                      f"time_escape_total_per_sample: {time_escape_total_per_sample:0.3f}")

            if len(results_sorted) != n:
                results_ret_list.append({"key": key, "text": "", "timestamp": []})
                logging.info("decoding, utt: {}, empty result".format(key))
                continue
            restored_data = [0] * n
            for j in range(n):
                index = sorted_data[j][1]
                restored_data[index] = results_sorted[j]
            result = {}

            # results combine for texts, timestamps, speaker embeddings and others
            # TODO: rewrite for clean code
            for j in range(n):
                for k, v in restored_data[j].items():
                    if k.startswith("timestamp"):
                        if k not in result:
                            result[k] = []
                        for t in restored_data[j][k]:
                            t[0] += vadsegments[j][0]
                            t[1] += vadsegments[j][0]
                        result[k].extend(restored_data[j][k])
                    elif k == "spk_embedding":
                        if k not in result:
                            result[k] = restored_data[j][k]
                        else:
                            result[k] = torch.cat([result[k], restored_data[j][k]], dim=0)
                    elif "text" in k:
                        if k not in result:
                            result[k] = restored_data[j][k]
                        else:
                            result[k] += " " + restored_data[j][k]
                    else:
                        if k not in result:
                            result[k] = restored_data[j][k]
                        else:
                            result[k] += restored_data[j][k]

            if not len(result["text"].strip()):
                continue
            return_raw_text = kwargs.get("return_raw_text", False)
            # step.3 compute punc model
            raw_text = None
            if self.punc_model is not None:
                deep_update(self.punc_kwargs, cfg)
                punc_res = self.inference(
                    result["text"], model=self.punc_model, kwargs=self.punc_kwargs, **cfg
                )
                raw_text = copy.copy(result["text"])
                if return_raw_text:
                    result["raw_text"] = raw_text
                result["text"] = punc_res[0]["text"]

            # speaker embedding cluster after resorted
            if self.spk_model is not None and kwargs.get("return_spk_res", True):
                if raw_text is None:
                    logging.error("Missing punc_model, which is required by spk_model.")
                all_segments = sorted(all_segments, key=lambda x: x[0])
                spk_embedding = result["spk_embedding"]
                labels = self.cb_model(
                    spk_embedding.cpu(), oracle_num=kwargs.get("preset_spk_num", None)
                )
                # del result['spk_embedding']
                sv_output = postprocess(all_segments, None, labels, spk_embedding.cpu())
                if self.spk_mode == "vad_segment":  # recover sentence_list
                    sentence_list = []
                    for rest, vadsegment in zip(restored_data, vadsegments):
                        if "timestamp" not in rest:
                            logging.error(
                                "Only 'iic/speech_paraformer-large-vad-punc_asr_nat-zh-cn-16k-common-vocab8404-pytorch' \
                                           and 'iic/speech_seaco_paraformer_large_asr_nat-zh-cn-16k-common-vocab8404-pytorch'\
                                           can predict timestamp, and speaker diarization relies on timestamps."
                            )
                        sentence_list.append(
                            {
                                "start": vadsegment[0],
                                "end": vadsegment[1],
                                "sentence": rest["text"],
                                "timestamp": rest["timestamp"],
                            }
                        )
                elif self.spk_mode == "punc_segment":
                    if "timestamp" not in result:
                        logging.error(
                            "Only 'iic/speech_paraformer-large-vad-punc_asr_nat-zh-cn-16k-common-vocab8404-pytorch' \
                                       and 'iic/speech_seaco_paraformer_large_asr_nat-zh-cn-16k-common-vocab8404-pytorch'\
                                       can predict timestamp, and speaker diarization relies on timestamps."
                        )
                    if kwargs.get("en_post_proc", False):
                        sentence_list = timestamp_sentence_en(
                            punc_res[0]["punc_array"],
                            result["timestamp"],
                            raw_text,
                            return_raw_text=return_raw_text,
                        )
                    else:
                        sentence_list = timestamp_sentence(
                            punc_res[0]["punc_array"],
                            result["timestamp"],
                            raw_text,
                            return_raw_text=return_raw_text,
                        )
                distribute_spk(sentence_list, sv_output)
                result["sentence_info"] = sentence_list
            elif kwargs.get("sentence_timestamp", False):
                if not len(result["text"].strip()):
                    sentence_list = []
                else:
                    if kwargs.get("en_post_proc", False):
                        sentence_list = timestamp_sentence_en(
                            punc_res[0]["punc_array"],
                            result["timestamp"],
                            raw_text,
                            return_raw_text=return_raw_text,
                        )
                    else:
                        sentence_list = timestamp_sentence(
                            punc_res[0]["punc_array"],
                            result["timestamp"],
                            raw_text,
                            return_raw_text=return_raw_text,
                        )
                result["sentence_info"] = sentence_list
            if "spk_embedding" in result:
                del result["spk_embedding"]

            result["key"] = key
            results_ret_list.append(result)
            end_asr_total = time.time()
            time_escape_total_per_sample = end_asr_total - beg_asr_total
            if pbar_total:
                pbar_total.update(1)
                pbar_total.set_description(
                    f"rtf_avg: {time_escape_total_per_sample / time_speech_total_per_sample:0.3f}, "
                    f"time_speech: {time_speech_total_per_sample: 0.3f}, "
                    f"time_escape: {time_escape_total_per_sample:0.3f}"
                )

        # end_total = time.time()
        # time_escape_total_all_samples = end_total - beg_total
        # print(f"rtf_avg_all: {time_escape_total_all_samples / time_speech_total_all_samples:0.3f}, "
        #                      f"time_speech_all: {time_speech_total_all_samples: 0.3f}, "
        #                      f"time_escape_all: {time_escape_total_all_samples:0.3f}")
        return results_ret_list

    def export(self, input=None, **cfg):
        """

        :param input:
        :param type:
        :param quantize:
        :param fallback_num:
        :param calib_num:
        :param opset_version:
        :param cfg:
        :return:
        """

        device = cfg.get("device", "cpu")
        model = self.model.to(device=device)
        kwargs = self.kwargs
        deep_update(kwargs, cfg)
        kwargs["device"] = device
        del kwargs["model"]
        model.eval()

        type = kwargs.get("type", "onnx")

        key_list, data_list = prepare_data_iterator(
            input, input_len=None, data_type=kwargs.get("data_type", None), key=None
        )

        with torch.no_grad():
            export_dir = export_utils.export(model=model, data_in=data_list, **kwargs)

        return export_dir
