import argparse
import logging
import os
from pathlib import Path
from typing import Callable
from typing import Collection
from typing import Dict
from typing import List
from typing import Optional
from typing import Tuple
from typing import Union

import numpy as np
import torch
import yaml

from funasr.datasets.collate_fn import CommonCollateFn
from funasr.datasets.preprocessor import CommonPreprocessor
from funasr.layers.abs_normalize import AbsNormalize
from funasr.layers.global_mvn import GlobalMVN
from funasr.layers.utterance_mvn import UtteranceMVN
from funasr.models.ctc import CTC
from funasr.models.decoder.abs_decoder import AbsDecoder
from funasr.models.decoder.rnn_decoder import RNNDecoder
from funasr.models.decoder.sanm_decoder import ParaformerSANMDecoder, FsmnDecoderSCAMAOpt
from funasr.models.decoder.transformer_decoder import (
    DynamicConvolution2DTransformerDecoder,  # noqa: H301
)
from funasr.models.decoder.transformer_decoder import SAAsrTransformerDecoder
from funasr.models.decoder.transformer_decoder import DynamicConvolutionTransformerDecoder
from funasr.models.decoder.transformer_decoder import (
    LightweightConvolution2DTransformerDecoder,  # noqa: H301
)
from funasr.models.decoder.transformer_decoder import (
    LightweightConvolutionTransformerDecoder,  # noqa: H301
)
from funasr.models.decoder.transformer_decoder import ParaformerDecoderSAN
from funasr.models.decoder.transformer_decoder import TransformerDecoder
from funasr.models.decoder.contextual_decoder import ContextualParaformerDecoder
from funasr.models.e2e_sa_asr import SAASRModel
from funasr.models.e2e_asr_paraformer import Paraformer, ParaformerBert, BiCifParaformer, ContextualParaformer
from funasr.models.e2e_tp import TimestampPredictor
from funasr.models.e2e_asr_mfcca import MFCCA
from funasr.models.e2e_uni_asr import UniASR
from funasr.models.encoder.abs_encoder import AbsEncoder
from funasr.models.encoder.conformer_encoder import ConformerEncoder
from funasr.models.encoder.data2vec_encoder import Data2VecEncoder
from funasr.models.encoder.rnn_encoder import RNNEncoder
from funasr.models.encoder.sanm_encoder import SANMEncoder, SANMEncoderChunkOpt
from funasr.models.encoder.transformer_encoder import TransformerEncoder
from funasr.models.encoder.mfcca_encoder import MFCCAEncoder
from funasr.models.encoder.resnet34_encoder import ResNet34,ResNet34Diar
from funasr.models.frontend.abs_frontend import AbsFrontend
from funasr.models.frontend.default import DefaultFrontend
from funasr.models.frontend.default import MultiChannelFrontend
from funasr.models.frontend.fused import FusedFrontends
from funasr.models.frontend.s3prl import S3prlFrontend
from funasr.models.frontend.wav_frontend import WavFrontend
from funasr.models.frontend.windowing import SlidingWindow
from funasr.models.postencoder.abs_postencoder import AbsPostEncoder
from funasr.models.postencoder.hugging_face_transformers_postencoder import (
    HuggingFaceTransformersPostEncoder,  # noqa: H301
)
from funasr.models.predictor.cif import CifPredictor, CifPredictorV2, CifPredictorV3
from funasr.models.preencoder.abs_preencoder import AbsPreEncoder
from funasr.models.preencoder.linear import LinearProjection
from funasr.models.preencoder.sinc import LightweightSincConvs
from funasr.models.specaug.abs_specaug import AbsSpecAug
from funasr.models.specaug.specaug import SpecAug
from funasr.models.specaug.specaug import SpecAugLFR
from funasr.models.base_model import FunASRModel
from funasr.modules.subsampling import Conv1dSubsampling
from funasr.tasks.abs_task import AbsTask
from funasr.text.phoneme_tokenizer import g2p_choices
from funasr.torch_utils.initialize import initialize
from funasr.train.class_choices import ClassChoices
from funasr.train.trainer import Trainer
from funasr.utils.get_default_kwargs import get_default_kwargs
from funasr.utils.nested_dict_action import NestedDictAction
from funasr.utils.types import float_or_none
from funasr.utils.types import int_or_none
from funasr.utils.types import str2bool
from funasr.utils.types import str_or_none

frontend_choices = ClassChoices(
    name="frontend",
    classes=dict(
        default=DefaultFrontend,
        sliding_window=SlidingWindow,
        s3prl=S3prlFrontend,
        fused=FusedFrontends,
        wav_frontend=WavFrontend,
        multichannelfrontend=MultiChannelFrontend,
    ),
    type_check=AbsFrontend,
    default="default",
)
specaug_choices = ClassChoices(
    name="specaug",
    classes=dict(
        specaug=SpecAug,
        specaug_lfr=SpecAugLFR,
    ),
    type_check=AbsSpecAug,
    default=None,
    optional=True,
)
normalize_choices = ClassChoices(
    "normalize",
    classes=dict(
        global_mvn=GlobalMVN,
        utterance_mvn=UtteranceMVN,
    ),
    type_check=AbsNormalize,
    default=None,
    optional=True,
)
model_choices = ClassChoices(
    "model",
    classes=dict(
        asr=SAASRModel,
        uniasr=UniASR,
        paraformer=Paraformer,
        paraformer_bert=ParaformerBert,
        bicif_paraformer=BiCifParaformer,
        contextual_paraformer=ContextualParaformer,
        mfcca=MFCCA,
        timestamp_prediction=TimestampPredictor,
    ),
    type_check=FunASRModel,
    default="asr",
)
preencoder_choices = ClassChoices(
    name="preencoder",
    classes=dict(
        sinc=LightweightSincConvs,
        linear=LinearProjection,
    ),
    type_check=AbsPreEncoder,
    default=None,
    optional=True,
)
asr_encoder_choices = ClassChoices(
    "asr_encoder",
    classes=dict(
        conformer=ConformerEncoder,
        transformer=TransformerEncoder,
        rnn=RNNEncoder,
        sanm=SANMEncoder,
        sanm_chunk_opt=SANMEncoderChunkOpt,
        data2vec_encoder=Data2VecEncoder,
        mfcca_enc=MFCCAEncoder,
    ),
    type_check=AbsEncoder,
    default="rnn",
)

spk_encoder_choices = ClassChoices(
    "spk_encoder",
    classes=dict(
        resnet34_diar=ResNet34Diar,
    ),
    default="resnet34_diar",
)

encoder_choices2 = ClassChoices(
    "encoder2",
    classes=dict(
        conformer=ConformerEncoder,
        transformer=TransformerEncoder,
        rnn=RNNEncoder,
        sanm=SANMEncoder,
        sanm_chunk_opt=SANMEncoderChunkOpt,
    ),
    type_check=AbsEncoder,
    default="rnn",
)
postencoder_choices = ClassChoices(
    name="postencoder",
    classes=dict(
        hugging_face_transformers=HuggingFaceTransformersPostEncoder,
    ),
    type_check=AbsPostEncoder,
    default=None,
    optional=True,
)
decoder_choices = ClassChoices(
    "decoder",
    classes=dict(
        transformer=TransformerDecoder,
        lightweight_conv=LightweightConvolutionTransformerDecoder,
        lightweight_conv2d=LightweightConvolution2DTransformerDecoder,
        dynamic_conv=DynamicConvolutionTransformerDecoder,
        dynamic_conv2d=DynamicConvolution2DTransformerDecoder,
        rnn=RNNDecoder,
        fsmn_scama_opt=FsmnDecoderSCAMAOpt,
        paraformer_decoder_sanm=ParaformerSANMDecoder,
        paraformer_decoder_san=ParaformerDecoderSAN,
        contextual_paraformer_decoder=ContextualParaformerDecoder,
        sa_decoder=SAAsrTransformerDecoder,
    ),
    type_check=AbsDecoder,
    default="sa_decoder",
)
decoder_choices2 = ClassChoices(
    "decoder2",
    classes=dict(
        transformer=TransformerDecoder,
        lightweight_conv=LightweightConvolutionTransformerDecoder,
        lightweight_conv2d=LightweightConvolution2DTransformerDecoder,
        dynamic_conv=DynamicConvolutionTransformerDecoder,
        dynamic_conv2d=DynamicConvolution2DTransformerDecoder,
        rnn=RNNDecoder,
        fsmn_scama_opt=FsmnDecoderSCAMAOpt,
        paraformer_decoder_sanm=ParaformerSANMDecoder,
    ),
    type_check=AbsDecoder,
    default="rnn",
)
predictor_choices = ClassChoices(
    name="predictor",
    classes=dict(
        cif_predictor=CifPredictor,
        ctc_predictor=None,
        cif_predictor_v2=CifPredictorV2,
        cif_predictor_v3=CifPredictorV3,
    ),
    type_check=None,
    default="cif_predictor",
    optional=True,
)
predictor_choices2 = ClassChoices(
    name="predictor2",
    classes=dict(
        cif_predictor=CifPredictor,
        ctc_predictor=None,
        cif_predictor_v2=CifPredictorV2,
    ),
    type_check=None,
    default="cif_predictor",
    optional=True,
)
stride_conv_choices = ClassChoices(
    name="stride_conv",
    classes=dict(
        stride_conv1d=Conv1dSubsampling
    ),
    type_check=None,
    default="stride_conv1d",
    optional=True,
)


class ASRTask(AbsTask):
    # If you need more than one optimizers, change this value
    num_optimizers: int = 1

    # Add variable objects configurations
    class_choices_list = [
        # --frontend and --frontend_conf
        frontend_choices,
        # --specaug and --specaug_conf
        specaug_choices,
        # --normalize and --normalize_conf
        normalize_choices,
        # --model and --model_conf
        model_choices,
        # --preencoder and --preencoder_conf
        preencoder_choices,
        # --asr_encoder and --asr_encoder_conf
        asr_encoder_choices,
        # --spk_encoder and --spk_encoder_conf
        spk_encoder_choices,
        # --postencoder and --postencoder_conf
        postencoder_choices,
        # --decoder and --decoder_conf
        decoder_choices,
    ]

    # If you need to modify train() or eval() procedures, change Trainer class here
    trainer = Trainer

    @classmethod
    def add_task_arguments(cls, parser: argparse.ArgumentParser):
        group = parser.add_argument_group(description="Task related")

        # NOTE(kamo): add_arguments(..., required=True) can't be used
        # to provide --print_config mode. Instead of it, do as
        # required = parser.get_default("required")
        # required += ["token_list"]

        group.add_argument(
            "--token_list",
            type=str_or_none,
            default=None,
            help="A text mapping int-id to token",
        )
        group.add_argument(
            "--split_with_space",
            type=str2bool,
            default=True,
            help="whether to split text using <space>",
        )
        group.add_argument(
            "--max_spk_num",
            type=int_or_none,
            default=None,
            help="A text mapping int-id to token",
        )
        group.add_argument(
            "--seg_dict_file",
            type=str,
            default=None,
            help="seg_dict_file for text processing",
        )
        group.add_argument(
            "--init",
            type=lambda x: str_or_none(x.lower()),
            default=None,
            help="The initialization method",
            choices=[
                "chainer",
                "xavier_uniform",
                "xavier_normal",
                "kaiming_uniform",
                "kaiming_normal",
                None,
            ],
        )

        group.add_argument(
            "--input_size",
            type=int_or_none,
            default=None,
            help="The number of input dimension of the feature",
        )

        group.add_argument(
            "--ctc_conf",
            action=NestedDictAction,
            default=get_default_kwargs(CTC),
            help="The keyword arguments for CTC class.",
        )
        group.add_argument(
            "--joint_net_conf",
            action=NestedDictAction,
            default=None,
            help="The keyword arguments for joint network class.",
        )

        group = parser.add_argument_group(description="Preprocess related")
        group.add_argument(
            "--use_preprocessor",
            type=str2bool,
            default=True,
            help="Apply preprocessing to data or not",
        )
        group.add_argument(
            "--token_type",
            type=str,
            default="bpe",
            choices=["bpe", "char", "word", "phn"],
            help="The text will be tokenized " "in the specified level token",
        )
        group.add_argument(
            "--bpemodel",
            type=str_or_none,
            default=None,
            help="The model file of sentencepiece",
        )
        parser.add_argument(
            "--non_linguistic_symbols",
            type=str_or_none,
            default=None,
            help="non_linguistic_symbols file path",
        )
        parser.add_argument(
            "--cleaner",
            type=str_or_none,
            choices=[None, "tacotron", "jaconv", "vietnamese"],
            default=None,
            help="Apply text cleaning",
        )
        parser.add_argument(
            "--g2p",
            type=str_or_none,
            choices=g2p_choices,
            default=None,
            help="Specify g2p method if --token_type=phn",
        )
        parser.add_argument(
            "--speech_volume_normalize",
            type=float_or_none,
            default=None,
            help="Scale the maximum amplitude to the given value.",
        )
        parser.add_argument(
            "--rir_scp",
            type=str_or_none,
            default=None,
            help="The file path of rir scp file.",
        )
        parser.add_argument(
            "--rir_apply_prob",
            type=float,
            default=1.0,
            help="THe probability for applying RIR convolution.",
        )
        parser.add_argument(
            "--cmvn_file",
            type=str_or_none,
            default=None,
            help="The file path of noise scp file.",
        )
        parser.add_argument(
            "--noise_scp",
            type=str_or_none,
            default=None,
            help="The file path of noise scp file.",
        )
        parser.add_argument(
            "--noise_apply_prob",
            type=float,
            default=1.0,
            help="The probability applying Noise adding.",
        )
        parser.add_argument(
            "--noise_db_range",
            type=str,
            default="13_15",
            help="The range of noise decibel level.",
        )

        for class_choices in cls.class_choices_list:
            # Append --<name> and --<name>_conf.
            # e.g. --encoder and --encoder_conf
            class_choices.add_arguments(group)

    @classmethod
    def build_collate_fn(
            cls, args: argparse.Namespace, train: bool
    ) -> Callable[
        [Collection[Tuple[str, Dict[str, np.ndarray]]]],
        Tuple[List[str], Dict[str, torch.Tensor]],
    ]:
        # NOTE(kamo): int value = 0 is reserved by CTC-blank symbol
        return CommonCollateFn(float_pad_value=0.0, int_pad_value=-1)

    @classmethod
    def build_preprocess_fn(
            cls, args: argparse.Namespace, train: bool
    ) -> Optional[Callable[[str, Dict[str, np.array]], Dict[str, np.ndarray]]]:
        if args.use_preprocessor:
            retval = CommonPreprocessor(
                train=train,
                token_type=args.token_type,
                token_list=args.token_list,
                bpemodel=args.bpemodel,
                non_linguistic_symbols=args.non_linguistic_symbols,
                text_cleaner=args.cleaner,
                g2p_type=args.g2p,
                split_with_space=args.split_with_space if hasattr(args, "split_with_space") else False,
                seg_dict_file=args.seg_dict_file if hasattr(args, "seg_dict_file") else None,
                # NOTE(kamo): Check attribute existence for backward compatibility
                rir_scp=args.rir_scp if hasattr(args, "rir_scp") else None,
                rir_apply_prob=args.rir_apply_prob
                if hasattr(args, "rir_apply_prob")
                else 1.0,
                noise_scp=args.noise_scp if hasattr(args, "noise_scp") else None,
                noise_apply_prob=args.noise_apply_prob
                if hasattr(args, "noise_apply_prob")
                else 1.0,
                noise_db_range=args.noise_db_range
                if hasattr(args, "noise_db_range")
                else "13_15",
                speech_volume_normalize=args.speech_volume_normalize
                if hasattr(args, "rir_scp")
                else None,
            )
        else:
            retval = None
        return retval

    @classmethod
    def required_data_names(
            cls, train: bool = True, inference: bool = False
    ) -> Tuple[str, ...]:
        if not inference:
            retval = ("speech", "text")
        else:
            # Recognition mode
            retval = ("speech",)
        return retval

    @classmethod
    def optional_data_names(
            cls, train: bool = True, inference: bool = False
    ) -> Tuple[str, ...]:
        retval = ()
        return retval

    @classmethod
    def build_model(cls, args: argparse.Namespace):
        if isinstance(args.token_list, str):
            with open(args.token_list, encoding="utf-8") as f:
                token_list = [line.rstrip() for line in f]

            # Overwriting token_list to keep it as "portable".
            args.token_list = list(token_list)
        elif isinstance(args.token_list, (tuple, list)):
            token_list = list(args.token_list)
        else:
            raise RuntimeError("token_list must be str or list")
        vocab_size = len(token_list)
        logging.info(f"Vocabulary size: {vocab_size}")

        # 1. frontend
        if args.input_size is None:
            # Extract features in the model
            frontend_class = frontend_choices.get_class(args.frontend)
            if args.frontend == 'wav_frontend':
                frontend = frontend_class(cmvn_file=args.cmvn_file, **args.frontend_conf)
            else:
                frontend = frontend_class(**args.frontend_conf)
            input_size = frontend.output_size()
        else:
            # Give features from data-loader
            args.frontend = None
            args.frontend_conf = {}
            frontend = None
            input_size = args.input_size

        # 2. Data augmentation for spectrogram
        if args.specaug is not None:
            specaug_class = specaug_choices.get_class(args.specaug)
            specaug = specaug_class(**args.specaug_conf)
        else:
            specaug = None

        # 3. Normalization layer
        if args.normalize is not None:
            normalize_class = normalize_choices.get_class(args.normalize)
            normalize = normalize_class(**args.normalize_conf)
        else:
            normalize = None

        # 4. Pre-encoder input block
        # NOTE(kan-bayashi): Use getattr to keep the compatibility
        if getattr(args, "preencoder", None) is not None:
            preencoder_class = preencoder_choices.get_class(args.preencoder)
            preencoder = preencoder_class(**args.preencoder_conf)
            input_size = preencoder.output_size()
        else:
            preencoder = None

        # 5. Encoder
        asr_encoder_class = asr_encoder_choices.get_class(args.asr_encoder)
        asr_encoder = asr_encoder_class(input_size=input_size, **args.asr_encoder_conf)
        spk_encoder_class = spk_encoder_choices.get_class(args.spk_encoder)
        spk_encoder = spk_encoder_class(input_size=input_size, **args.spk_encoder_conf)

        # 6. Post-encoder block
        # NOTE(kan-bayashi): Use getattr to keep the compatibility
        asr_encoder_output_size = asr_encoder.output_size()
        if getattr(args, "postencoder", None) is not None:
            postencoder_class = postencoder_choices.get_class(args.postencoder)
            postencoder = postencoder_class(
                input_size=asr_encoder_output_size, **args.postencoder_conf
            )
            asr_encoder_output_size = postencoder.output_size()
        else:
            postencoder = None

        # 7. Decoder
        decoder_class = decoder_choices.get_class(args.decoder)
        decoder = decoder_class(
            vocab_size=vocab_size,
            encoder_output_size=asr_encoder_output_size,
            **args.decoder_conf,
        )

        # 8. CTC
        ctc = CTC(
            odim=vocab_size, encoder_output_size=asr_encoder_output_size, **args.ctc_conf
        )

        max_spk_num=int(args.max_spk_num)

        # import ipdb;ipdb.set_trace()
        # 9. Build model
        try:
            model_class = model_choices.get_class(args.model)
        except AttributeError:
            model_class = model_choices.get_class("asr")
        model = model_class(
            vocab_size=vocab_size,
            max_spk_num=max_spk_num,
            frontend=frontend,
            specaug=specaug,
            normalize=normalize,
            preencoder=preencoder,
            asr_encoder=asr_encoder,
            spk_encoder=spk_encoder,
            postencoder=postencoder,
            decoder=decoder,
            ctc=ctc,
            token_list=token_list,
            **args.model_conf,
        )

        # 10. Initialize
        if args.init is not None:
            initialize(model, args.init)

        return model