import os
import re
from pathlib import Path

import jieba
from omegaconf import OmegaConf

from ipa.convert_digits import parse_num
from ipa.proc_text import (
    apply_v2f,
    normalize_text,
    prep_regex,
    run_jieba,
    update_jieba_dict,
)

ipa_configs = OmegaConf.to_object(OmegaConf.load("configs/ipa.yaml"))
for key in ipa_configs["preserved_list"]:
    ipa_configs["v2f_dict"].pop(key, None)
delimiter_regex, replace_regex, v2f_regex = prep_regex(
    ipa_configs["delimiter_list"], ipa_configs["replace_dict"], ipa_configs["v2f_dict"]
)


def get_ipa(raw_text: str, dialect: str) -> tuple[str, str, str, list[str]]:
    pinyin_split = re.split(
        r"([a-z]+\d+)", raw_text
    )

    final_words = []
    final_pinyin = []
    final_ipa = []
    final_missing_words = []
    for hanzi_or_pinyin in pinyin_split:
        if len(hanzi_or_pinyin.strip()) == 0:
            continue

        if re.search(r"[a-z]+\d+", hanzi_or_pinyin):
            final_words.append(hanzi_or_pinyin)
            final_pinyin.append(hanzi_or_pinyin)
            pinyin, tone = re.match(r"([a-z]+)(\d+)?", hanzi_or_pinyin).groups()
            tone = f"_{tone}" if tone else ""

            ipa = parse_pinyin_to_ipa(pinyin)
            if ipa is None:
                final_missing_words.append(pinyin)
                continue

            final_ipa.append(ipa + tone)
        else:
            words, ipa, pinyin, missing_words = parse_hanzi_to_ipa(
                hanzi_or_pinyin, dialect
            )
            final_words.extend(words)
            final_ipa.extend(ipa)
            final_pinyin.extend(pinyin)
            final_missing_words.extend(missing_words)

    if len(final_ipa) == 0 or len(final_missing_words) > 0:
        return final_words, final_ipa, final_pinyin, final_missing_words

    final_words = " ".join(final_words).replace(" ， ", "，")
    final_ipa = " ".join(final_ipa).replace(" ， ", "，")
    final_pinyin = " ".join(final_pinyin).replace(" ， ", "，")

    return final_words, final_ipa, final_pinyin, final_missing_words


def parse_ipa(ipa: str, delete_chars="\+\-\|\_", as_space="")->list[str]:
    text = []

    ipa_list = re.split(r"(?<![\d])(?=[\d])|(?<=[\d])(?![\d])", ipa)
    print(ipa_list)
    for word in ipa_list:
        if word.isdigit():
            text.append(word)
        else:
            if len(as_space) > 0:
                word = re.sub(r"[{}]".format(as_space), " ", word)
            if len(delete_chars) > 0:
                word = re.sub(r"[{}]".format(delete_chars), "", word)

            word = word.replace("，", " ， ")
            text.extend(word)

    return text


def parse_pinyin_to_ipa(pinyin: str)->str|None:
    if pinyin not in ipa_configs["pinyin_to_ipa_dict"]:
        return None

    ipa_dict_result = ipa_configs["pinyin_to_ipa_dict"][pinyin]
    ipa = "+".join(ipa_dict_result).replace(" ", "-")
    return ipa


def parse_hanzi_to_ipa(
    hanzi: str, dialect: str
) -> tuple[list[str], list[str], list[str], list[str]]:
    lexicon = ipa_configs["lexicon"][dialect]
    update_jieba_dict(
        list(lexicon.keys()), Path(os.path.dirname(jieba.__file__)) / "dict.txt"
    )

    text = normalize_text(hanzi, ipa_configs["replace_dict"], replace_regex)
    text = parse_num(text)
    text_parts = [s.strip() for s in re.split(delimiter_regex, text) if s.strip()]
    text = "，".join(text_parts)
    word_list = run_jieba(text)
    word_list = apply_v2f(word_list, ipa_configs["v2f_dict"], v2f_regex)
    word_list = run_jieba("".join(word_list))

    final_words = []
    final_pinyin = []
    final_ipa = []
    missing_words = []
    for word in word_list:
        if not bool(word.strip()):
            continue
        if word == "，":
            final_words.append("，")
            final_pinyin.append("，")
            final_ipa.append("，")
        elif word not in lexicon:
            final_words.append(word)
            missing_words.append(word)
        else:
            final_words.append(f"{word}")
            final_pinyin.append(lexicon[word]["pinyin"][0])
            # NOTE 只有 lexicon[word] 中的第一個 ipa 才被考慮
            final_ipa.append(lexicon[word]["ipa"][0])

    return final_words, final_ipa, final_pinyin, missing_words