import os
import re

import cn2an
from pypinyin import lazy_pinyin, Style

from bert_vits2.text.symbols import punctuation
from bert_vits2.text.tone_sandhi import ToneSandhi

current_file_path = os.path.dirname(__file__)
pinyin_to_symbol_map = {line.split("\t")[0]: line.strip().split("\t")[1] for line in
                        open(os.path.join(current_file_path, 'opencpop-strict.txt')).readlines()}

import jieba.posseg as psg

rep_map = {
    '：': ',',
    '；': ',',
    '，': ',',
    '。': '.',
    '！': '!',
    '？': '?',
    '\n': '.',
    "·": ",",
    '、': ",",
    '...': '…',
    '$': '.',
    '“': "'",
    '”': "'",
    '‘': "'",
    '’': "'",
    '（': "'",
    '）': "'",
    '(': "'",
    ')': "'",
    '《': "'",
    '》': "'",
    '【': "'",
    '】': "'",
    '[': "'",
    ']': "'",
    '—': "-",
    '～': "-",
    '~': "-",
    '「': "'",
    '」': "'",

}

tone_modifier = ToneSandhi()


def replace_punctuation(text):
    text = text.replace("嗯", "恩").replace("呣", "母")
    pattern = re.compile('|'.join(re.escape(p) for p in rep_map.keys()))

    replaced_text = pattern.sub(lambda x: rep_map[x.group()], text)

    replaced_text = re.sub(r'[^\u4e00-\u9fa5' + "".join(punctuation) + r']+', '', replaced_text)

    return replaced_text


def g2p(text):
    pattern = r'(?<=[{0}])\s*'.format(''.join(punctuation))
    sentences = [i for i in re.split(pattern, text) if i.strip() != '']
    phones, tones, word2ph = _g2p(sentences)
    assert sum(word2ph) == len(phones)
    assert len(word2ph) == len(text)  # Sometimes it will crash,you can add a try-catch.
    phones = ['_'] + phones + ["_"]
    tones = [0] + tones + [0]
    word2ph = [1] + word2ph + [1]
    return phones, tones, word2ph


def _get_initials_finals(word):
    initials = []
    finals = []
    orig_initials = lazy_pinyin(
        word, neutral_tone_with_five=True, style=Style.INITIALS)
    orig_finals = lazy_pinyin(
        word, neutral_tone_with_five=True, style=Style.FINALS_TONE3)
    for c, v in zip(orig_initials, orig_finals):
        initials.append(c)
        finals.append(v)
    return initials, finals


def _g2p(segments):
    phones_list = []
    tones_list = []
    word2ph = []
    for seg in segments:
        pinyins = []
        # Replace all English words in the sentence
        seg = re.sub('[a-zA-Z]+', '', seg)
        seg_cut = psg.lcut(seg)
        initials = []
        finals = []
        seg_cut = tone_modifier.pre_merge_for_modify(seg_cut)
        for word, pos in seg_cut:
            if pos == 'eng':
                continue
            sub_initials, sub_finals = _get_initials_finals(word)
            sub_finals = tone_modifier.modified_tone(word, pos,
                                                     sub_finals)
            initials.append(sub_initials)
            finals.append(sub_finals)

            # assert len(sub_initials) == len(sub_finals) == len(word)
        initials = sum(initials, [])
        finals = sum(finals, [])
        #
        for c, v in zip(initials, finals):
            raw_pinyin = c + v
            # NOTE: post process for pypinyin outputs
            # we discriminate i, ii and iii
            if c == v:
                assert c in punctuation
                phone = [c]
                tone = '0'
                word2ph.append(1)
            else:
                v_without_tone = v[:-1]
                tone = v[-1]

                pinyin = c + v_without_tone
                assert tone in '12345'

                if c:
                    # 多音节
                    v_rep_map = {
                        "uei": 'ui',
                        'iou': 'iu',
                        'uen': 'un',
                    }
                    if v_without_tone in v_rep_map.keys():
                        pinyin = c + v_rep_map[v_without_tone]
                else:
                    # 单音节
                    pinyin_rep_map = {
                        'ing': 'ying',
                        'i': 'yi',
                        'in': 'yin',
                        'u': 'wu',
                    }
                    if pinyin in pinyin_rep_map.keys():
                        pinyin = pinyin_rep_map[pinyin]
                    else:
                        single_rep_map = {
                            'v': 'yu',
                            'e': 'e',
                            'i': 'y',
                            'u': 'w',
                        }
                        if pinyin[0] in single_rep_map.keys():
                            pinyin = single_rep_map[pinyin[0]] + pinyin[1:]

                assert pinyin in pinyin_to_symbol_map.keys(), (pinyin, seg, raw_pinyin)
                phone = pinyin_to_symbol_map[pinyin].split(' ')
                word2ph.append(len(phone))

            phones_list += phone
            tones_list += [int(tone)] * len(phone)
    return phones_list, tones_list, word2ph


def text_normalize(text):
    numbers = re.findall(r'\d+(?:\.?\d+)?', text)
    for number in numbers:
        text = text.replace(number, cn2an.an2cn(number), 1)
    text = replace_punctuation(text)
    return text


def get_bert_feature(text, word2ph):
    from bert_vits2.text import chinese_bert
    return chinese_bert.get_bert_feature(text, word2ph)


if __name__ == '__main__':
    from bert_vits2.text import get_bert_feature

    text = "啊！但是《原神》是由,米哈\游自主，  [研发]的一款全.新开放世界.冒险游戏"
    text = text_normalize(text)
    print(text)
    phones, tones, word2ph = g2p(text)
    bert = get_bert_feature(text, word2ph)

    print(phones, tones, word2ph, bert.shape)

# # 示例用法
# text = "这是一个示例文本：,你好！这是一个测试...."
# print(g2p_paddle(text))  # 输出: 这是一个示例文本你好这是一个测试