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spelling-correction
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"""
  Copyright @ nguyenvanhieu.vn
  Thằng code python này không giữ được lower/upper case
  Sẽ update khi rảnh
 """
import re


uniChars = "àáảãạâầấẩẫậăằắẳẵặèéẻẽẹêềếểễệđìíỉĩịòóỏõọôồốổỗộơờớởỡợùúủũụưừứửữựỳýỷỹỵÀÁẢÃẠÂẦẤẨẪẬĂẰẮẲẴẶÈÉẺẼẸÊỀẾỂỄỆĐÌÍỈĨỊÒÓỎÕỌÔỒỐỔỖỘƠỜỚỞỠỢÙÚỦŨỤƯỪỨỬỮỰỲÝỶỸỴÂĂĐÔƠƯ"
unsignChars = "aaaaaaaaaaaaaaaaaeeeeeeeeeeediiiiiooooooooooooooooouuuuuuuuuuuyyyyyAAAAAAAAAAAAAAAAAEEEEEEEEEEEDIIIOOOOOOOOOOOOOOOOOOOUUUUUUUUUUUYYYYYAADOOU"


def loaddicchar():
    dic = {}
    char1252 = 'à|á|ả|ã|ạ|ầ|ấ|ẩ|ẫ|ậ|ằ|ắ|ẳ|ẵ|ặ|è|é|ẻ|ẽ|ẹ|ề|ế|ể|ễ|ệ|ì|í|ỉ|ĩ|ị|ò|ó|ỏ|õ|ọ|ồ|ố|ổ|ỗ|ộ|ờ|ớ|ở|ỡ|ợ|ù|ú|ủ|ũ|ụ|ừ|ứ|ử|ữ|ự|ỳ|ý|ỷ|ỹ|ỵ|À|Á|Ả|Ã|Ạ|Ầ|Ấ|Ẩ|Ẫ|Ậ|Ằ|Ắ|Ẳ|Ẵ|Ặ|È|É|Ẻ|Ẽ|Ẹ|Ề|Ế|Ể|Ễ|Ệ|Ì|Í|Ỉ|Ĩ|Ị|Ò|Ó|Ỏ|Õ|Ọ|Ồ|Ố|Ổ|Ỗ|Ộ|Ờ|Ớ|Ở|Ỡ|Ợ|Ù|Ú|Ủ|Ũ|Ụ|Ừ|Ứ|Ử|Ữ|Ự|Ỳ|Ý|Ỷ|Ỹ|Ỵ'.split(
        '|')
    charutf8 = "à|á|ả|ã|ạ|ầ|ấ|ẩ|ẫ|ậ|ằ|ắ|ẳ|ẵ|ặ|è|é|ẻ|ẽ|ẹ|ề|ế|ể|ễ|ệ|ì|í|ỉ|ĩ|ị|ò|ó|ỏ|õ|ọ|ồ|ố|ổ|ỗ|ộ|ờ|ớ|ở|ỡ|ợ|ù|ú|ủ|ũ|ụ|ừ|ứ|ử|ữ|ự|ỳ|ý|ỷ|ỹ|ỵ|À|Á|Ả|Ã|Ạ|Ầ|Ấ|Ẩ|Ẫ|Ậ|Ằ|Ắ|Ẳ|Ẵ|Ặ|È|É|Ẻ|Ẽ|Ẹ|Ề|Ế|Ể|Ễ|Ệ|Ì|Í|Ỉ|Ĩ|Ị|Ò|Ó|Ỏ|Õ|Ọ|Ồ|Ố|Ổ|Ỗ|Ộ|Ờ|Ớ|Ở|Ỡ|Ợ|Ù|Ú|Ủ|Ũ|Ụ|Ừ|Ứ|Ử|Ữ|Ự|Ỳ|Ý|Ỷ|Ỹ|Ỵ".split(
        '|')
    for i in range(len(char1252)):
        dic[char1252[i]] = charutf8[i]
    return dic


dicchar = loaddicchar()


def convertwindown1525toutf8(txt):
    return re.sub(
        r'à|á|ả|ã|ạ|ầ|ấ|ẩ|ẫ|ậ|ằ|ắ|ẳ|ẵ|ặ|è|é|ẻ|ẽ|ẹ|ề|ế|ể|ễ|ệ|ì|í|ỉ|ĩ|ị|ò|ó|ỏ|õ|ọ|ồ|ố|ổ|ỗ|ộ|ờ|ớ|ở|ỡ|ợ|ù|ú|ủ|ũ|ụ|ừ|ứ|ử|ữ|ự|ỳ|ý|ỷ|ỹ|ỵ|À|Á|Ả|Ã|Ạ|Ầ|Ấ|Ẩ|Ẫ|Ậ|Ằ|Ắ|Ẳ|Ẵ|Ặ|È|É|Ẻ|Ẽ|Ẹ|Ề|Ế|Ể|Ễ|Ệ|Ì|Í|Ỉ|Ĩ|Ị|Ò|Ó|Ỏ|Õ|Ọ|Ồ|Ố|Ổ|Ỗ|Ộ|Ờ|Ớ|Ở|Ỡ|Ợ|Ù|Ú|Ủ|Ũ|Ụ|Ừ|Ứ|Ử|Ữ|Ự|Ỳ|Ý|Ỷ|Ỹ|Ỵ',
        lambda x: dicchar[x.group()], txt)

"""
    Start section: Chuyển câu văn về kiểu gõ telex khi không bật Unikey
    Ví dụ: thủy = thuyr, tượng = tuwowngj
"""
bang_nguyen_am = [['a', 'à', 'á', 'ả', 'ã', 'ạ', 'a'],
                  ['ă', 'ằ', 'ắ', 'ẳ', 'ẵ', 'ặ', 'aw'],
                  ['â', 'ầ', 'ấ', 'ẩ', 'ẫ', 'ậ', 'aa'],
                  ['e', 'è', 'é', 'ẻ', 'ẽ', 'ẹ', 'e'],
                  ['ê', 'ề', 'ế', 'ể', 'ễ', 'ệ', 'ee'],
                  ['i', 'ì', 'í', 'ỉ', 'ĩ', 'ị', 'i'],
                  ['o', 'ò', 'ó', 'ỏ', 'õ', 'ọ', 'o'],
                  ['ô', 'ồ', 'ố', 'ổ', 'ỗ', 'ộ', 'oo'],
                  ['ơ', 'ờ', 'ớ', 'ở', 'ỡ', 'ợ', 'ow'],
                  ['u', 'ù', 'ú', 'ủ', 'ũ', 'ụ', 'u'],
                  ['ư', 'ừ', 'ứ', 'ử', 'ữ', 'ự', 'uw'],
                  ['y', 'ỳ', 'ý', 'ỷ', 'ỹ', 'ỵ', 'y']]
bang_ky_tu_dau = ['', 'f', 's', 'r', 'x', 'j']

nguyen_am_to_ids = {}

for i in range(len(bang_nguyen_am)):
    for j in range(len(bang_nguyen_am[i]) - 1):
        nguyen_am_to_ids[bang_nguyen_am[i][j]] = (i, j)


def vn_word_to_telex_type(word):
    dau_cau = 0
    new_word = ''
    for char in word:
        x, y = nguyen_am_to_ids.get(char, (-1, -1))
        if x == -1:
            new_word += char
            continue
        if y != 0:
            dau_cau = y
        new_word += bang_nguyen_am[x][-1]
    new_word += bang_ky_tu_dau[dau_cau]
    return new_word


def vn_sentence_to_telex_type(sentence):
    """
    Chuyển câu tiếng việt có dấu về kiểu gõ telex.
    :param sentence:
    :return:
    """
    words = sentence.split()
    for index, word in enumerate(words):
        words[index] = vn_word_to_telex_type(word)
    return ' '.join(words)
"""
    Start section: Chuyển câu văn về cách gõ dấu kiểu cũ: dùng òa úy thay oà uý
    Xem tại đây: https://vi.wikipedia.org/wiki/Quy_t%E1%BA%AFc_%C4%91%E1%BA%B7t_d%E1%BA%A5u_thanh_trong_ch%E1%BB%AF_qu%E1%BB%91c_ng%E1%BB%AF
"""


def chuan_hoa_dau_tu_tieng_viet(word):
    if not is_valid_vietnam_word(word):
        return word

    chars = list(word)
    dau_cau = 0
    nguyen_am_index = []
    qu_or_gi = False
    for index, char in enumerate(chars):
        x, y = nguyen_am_to_ids.get(char, (-1, -1))
        if x == -1:
            continue
        elif x == 9:  # check qu
            if index != 0 and chars[index - 1] == 'q':
                chars[index] = 'u'
                qu_or_gi = True
        elif x == 5:  # check gi
            if index != 0 and chars[index - 1] == 'g':
                chars[index] = 'i'
                qu_or_gi = True
        if y != 0:
            dau_cau = y
            chars[index] = bang_nguyen_am[x][0]
        if not qu_or_gi or index != 1:
            nguyen_am_index.append(index)
    if len(nguyen_am_index) < 2:
        if qu_or_gi:
            if len(chars) == 2:
                x, y = nguyen_am_to_ids.get(chars[1])
                chars[1] = bang_nguyen_am[x][dau_cau]
            else:
                x, y = nguyen_am_to_ids.get(chars[2], (-1, -1))
                if x != -1:
                    chars[2] = bang_nguyen_am[x][dau_cau]
                else:
                    chars[1] = bang_nguyen_am[5][dau_cau] if chars[1] == 'i' else bang_nguyen_am[9][dau_cau]
            return ''.join(chars)
        return word

    for index in nguyen_am_index:
        x, y = nguyen_am_to_ids[chars[index]]
        if x == 4 or x == 8:  # ê, ơ
            chars[index] = bang_nguyen_am[x][dau_cau]
            # for index2 in nguyen_am_index:
            #     if index2 != index:
            #         x, y = nguyen_am_to_ids[chars[index]]
            #         chars[index2] = bang_nguyen_am[x][0]
            return ''.join(chars)

    if len(nguyen_am_index) == 2:
        if nguyen_am_index[-1] == len(chars) - 1:
            x, y = nguyen_am_to_ids[chars[nguyen_am_index[0]]]
            chars[nguyen_am_index[0]] = bang_nguyen_am[x][dau_cau]
            # x, y = nguyen_am_to_ids[chars[nguyen_am_index[1]]]
            # chars[nguyen_am_index[1]] = bang_nguyen_am[x][0]
        else:
            # x, y = nguyen_am_to_ids[chars[nguyen_am_index[0]]]
            # chars[nguyen_am_index[0]] = bang_nguyen_am[x][0]
            x, y = nguyen_am_to_ids[chars[nguyen_am_index[1]]]
            chars[nguyen_am_index[1]] = bang_nguyen_am[x][dau_cau]
    else:
        # x, y = nguyen_am_to_ids[chars[nguyen_am_index[0]]]
        # chars[nguyen_am_index[0]] = bang_nguyen_am[x][0]
        x, y = nguyen_am_to_ids[chars[nguyen_am_index[1]]]
        chars[nguyen_am_index[1]] = bang_nguyen_am[x][dau_cau]
        # x, y = nguyen_am_to_ids[chars[nguyen_am_index[2]]]
        # chars[nguyen_am_index[2]] = bang_nguyen_am[x][0]
    return ''.join(chars)


def is_valid_vietnam_word(word):
    chars = list(word)
    nguyen_am_index = -1
    for index, char in enumerate(chars):
        x, y = nguyen_am_to_ids.get(char, (-1, -1))
        if x != -1:
            if nguyen_am_index == -1:
                nguyen_am_index = index
            else:
                if index - nguyen_am_index != 1:
                    return False
                nguyen_am_index = index
    return True


def chuan_hoa_dau_cau_tieng_viet(sentence):
    """
        Chuyển câu tiếng việt về chuẩn gõ dấu kiểu cũ.
        :param sentence:
        :return:
        """
    sentence = sentence.lower()
    words = sentence.split()
    for index, word in enumerate(words):
        words[index] = chuan_hoa_dau_tu_tieng_viet(word)
    return ' '.join(words)