from typing import Any, Dict,List,Union
from transformers import Pipeline
import requests
import re
from io import BytesIO
import pandas as pd
import math
import queue
from datetime import date
import time
import logging
import torch
import torch.nn.functional as F

class Predictor():

    def __init__(
            self,
            pipelines: Dict[str, Pipeline] = {},
            paths: List[str] = [],
            today: date = date.today()
        ) -> None:
        if "name" not in pipelines:
            raise ValueError("'name' pipeline is None")
        if "common" not in pipelines:
            raise ValueError("'common' pipeline is None")
        self.pipelines = pipelines
        self.today = today
        self.logger = logging.getLogger(__name__)
        self.__init_split_data()
        self.__init_schools_data(paths)
        self.__init_patterns()

    def __init_patterns(
        self
    ):
        last_name = r"[赵,钱,孙,李,周,吴,郑,王,冯,陈,楮,卫,蒋,沈,韩,杨,朱,秦,尤,许,何,吕,施,张,孔,曹,严,华,金,魏,陶,姜,戚,谢,邹,喻,"\
            +r"柏,水,窦,章,云,苏,潘,葛,奚,范,彭,郎,鲁,韦,昌,马,苗,凤,花,方,俞,任,袁,柳,酆,鲍,史,唐,费,廉,岑,薛,雷,贺,倪,汤,滕,殷,罗," \
                    + r"毕,郝,邬,安,常,乐,于,时,傅,皮,卞,齐,康,伍,余,元,卜,顾,孟,平,黄,和,穆,萧,尹,姚,邵,湛,汪,祁,毛,禹,狄,米,贝,明,臧,计,伏,成,戴,谈,宋,茅," \
                    + r"庞,熊,纪,舒,屈,项,祝,董,梁,杜,阮,蓝,闽,席,季,麻,强,贾,路,娄,危,江,童,颜,郭,梅,盛,林,刁,锺,徐,丘,骆,高,夏,蔡,田,樊,胡,凌,霍,虞,万,支," \
                    + r"柯,昝,管,卢,莫,经,房,裘,缪,干,解,应,宗,丁,宣,贲,邓,郁,单,杭,洪,包,诸,左,石,崔,吉,钮,龚,程,嵇,邢,滑,裴,陆,荣,翁,荀,羊,於,惠,甄,麹,家," \
                    + r"封,芮,羿,储,靳,汲,邴,糜,松,井,段,富,巫,乌,焦,巴,弓,牧,隗,山,谷,车,侯,宓,蓬,全,郗,班,仰,秋,仲,伊,宫,宁,仇,栾,暴,甘,斜,厉,戎,祖,武,符," \
                    + r"刘,景,詹,束,龙,叶,幸,司,韶,郜,黎,蓟,薄,印,宿,白,怀,蒲,邰,从,鄂,索,咸,籍,赖,卓,蔺,屠,蒙,池,乔,阴,郁,胥,能,苍,双,闻,莘,党,翟,谭,贡,劳," \
                    + r"逄,姬,申,扶,堵,冉,宰,郦,雍,郤,璩,桑,桂,濮,牛,寿,通,边,扈,燕,冀,郏,浦,尚,农,温,别,庄,晏,柴,瞿,阎,充,慕,连,茹,习,宦,艾,鱼,容,向,古,易," \
                    + r"慎,戈,廖,庾,终,暨,居,衡,步,都,耿,满,弘,匡,国,文,寇,广,禄,阙,东,欧,殳,沃,利,蔚,越,夔,隆,师,巩,厍,聂,晁,勾,敖,融,冷,訾,辛,阚,那,简,饶," \
                    + r"空,曾,毋,沙,乜,养,鞠,须,丰,巢,关,蒯,相,查,后,荆,红,游,竺,权,逑,盖,益,桓,公,万俟,司马,上官,欧阳,夏侯,诸葛,闻人,东方,赫连,皇甫,尉迟," \
                    + r"公羊,澹台,公冶,宗政,濮阳,淳于,单于,太叔,申屠,公孙,仲孙,轩辕,令狐,锺离,宇文,长孙,慕容,鲜于,闾丘,司徒,司空,丌官,司寇,仉,督,子车," \
                    + r"颛孙,端木,巫马,公西,漆雕,乐正,壤驷,公良,拓拔,夹谷,宰父,谷梁,晋,楚,阎,法,汝,鄢,涂,钦,段干,百里,东郭,南门,呼延,归,海,羊舌,微生,岳," \
                    + r"帅,缑,亢,况,后,有,琴,梁丘,左丘,东门,西门,商,牟,佘,佴,伯,赏,南宫,墨,哈,谯,笪,年,爱,阳,佟,第五,言,福,邱,钟]"
        first_name = r' {0,3}[\u4e00-\u9fa5]( {0,3}[\u4e00-\u9fa5]){0,3}'
        self.name_pattern = re.compile(last_name + first_name)
        self.phone_pattern = re.compile(r'1 {0,4}(3 {0,4}\d|4 {0,4}[5-9]|5 {0,4}[0-35-9]|6 {0,4}[2567]|7 {0,4}[0-8]|8 {0,4}\d|9 {0,4}[0-35-9]) {0,4}(\d {0,4}){8}')
        self.email_pattern = re.compile(r'([a-zA-Z0-9_-] {0,4})+@([a-zA-Z0-9_-] {0,4})+(\. {0,4}([a-zA-Z0-9_-] {0,4})+)+')
        self.gender_pattern = re.compile(r'(性 {0,8}别.*?)?\s*?(男|女)')
        self.age_patterns = [
            re.compile(r"(\d{1,2})岁|年龄.{0,10}?(\d{1,2})"),
            re.compile(r"生.{0,12}(([12]\d{3})[年|.]?(([01]?\d)[月|.]?)?(([0-3]?\d)[日|.]?)?)"),
        ]
        self.works_key_pattern = re.compile("工作|experience|work",re.M|re.I)
        self.job_time_patterns = re.compile('([1-2]\d{3}(\D?[01]?\d){0,2})\D?([1-2]\d{3}(\D?[01]?\d){0,2}|至今)')
        self.edu_index =  ["博士","硕士","研究生","学士","本科","大专","专科","中专","高中","初中","小学"]
        self.edu_patterns = list(re.compile(i) for i in self.edu_index)
        self.school_pattern = re.compile(r"([a-zA-Z0-9 \u4e00-\u9fa5]{1,18}(学院|大学|中学|小学|学校|Unverisity|College))")

    def _is_url(self, path: str):
        return path.startswith('http://') or path.startswith('https://')

    def __init_schools_data(
        self,
        paths: List[str],
    ):
        schools = {}
        headers = {
            "User-Agent": "Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/73.0.3683.103 Safari/537.36",
        }
        for path in paths:
            stream = None
            if self._is_url(path):
                res = requests.get(path,headers=headers)
                
                if res.status_code==200:
                    stream = BytesIO(res.content)
            else:
                with open(path, 'rb') as f:
                    stream = BytesIO(f.read())
            df = pd.read_excel(stream)
            for row in df.iterrows():
                if isinstance(row[1][1],float) and math.isnan(row[1][1]):
                    continue
                if row[1][1]=='学校名称':
                    continue
                # [学校] = 学历(本科、专科)
                if len(row[1])>5:
                    schools[row[1][1]] = row[1][5]
                else:
                    schools[row[1][1]] = "成人学校"
        self.schools = schools
        if len(schools)==0:
            raise ValueError("学校数据为空")

    def __init_split_data(
        self
    ):
        self.splits = {'\\', '_', '"', '%', '{', '《', ')', '$', '(', '\n', '~', '*', ':', '!', '；', '”', '’', '\t', '？', '-', ';', '》', '】', '`', '、', '+', '“', '[', '—', '·', '）', '=', '‘', '}', '?', '，', '&', '@', '#', ']', '——', ' ', '.', '【', "'", '>', ',', '/', '：', '。', '...', '^', '（', '<', '|', '……', '！'}

    def to_date(self, datestr:str):
        if re.match("^\d{4}$",datestr):
            return date(int(datestr),1,1)
        match = re.match("^(\d{4})\D(\d{1,2})",datestr)
        if match is not None:
            try:
                y = int(match.group(1))
                m = min(max(int(match.group(2)),1),12)
                return date(y,m,1)
            except ValueError:
                print(datestr)
        if datestr=="至今":
            return self.today
        return None

    def split_to_blocks(
        self,
        text: str,
        max_block_len: int = 510,
        overlap: bool = True,
        max_overlap_len: int = 20,
    ):
        block = {
            "start": -1,
            "end": -1,
            "text": "",
        }
        blocks = []
        overlap_end = queue.Queue()
        for i in range(len(text)):
            if text[i] in self.splits:
                if block["start"]==-1:
                    continue
                if block["end"]!=-1 and i-block['start']>=max_block_len:
                    block["text"] = text[block["start"]:block["end"]]
                    blocks.append(block)
                    block = {
                        "start": overlap_end.queue[0]+1 if overlap else block['end']+1,
                        "end": -1,
                        "text": "",
                    }
                block["end"] = i
                while overlap_end.qsize()>0 and overlap_end.queue[0]+max_overlap_len<=i:
                    overlap_end.get()
                overlap_end.put(i)
            else:
                if block["start"]==-1:
                    block["start"] = i
        # last block
        if block["start"]!=-1:
            block["end"] = len(text)
            block["text"] = text[block["start"]:block["end"]]
            blocks.append(block)
        return blocks
    
    def get_expand_span(
        self, 
        text: str, 
        start: int, 
        end: int,
        max_expand_length=10,
    ):
        expand_l,expand_r = start,end
        for l in range(max(start-max_expand_length,0), start):
            if text[l] in self.splits:
                expand_l = l+1
                break
        for r in range(min(end+max_expand_length,len(text)-1), end, -1):
            if text[r] in self.splits:
                expand_r = r
                break
        return text[expand_l:expand_r], expand_l, expand_r
    
    def remove_blanks(
        self,
        text: str,
        blank_pattern: re.Pattern,
    ):
        index_mapper = {}
        new_text = []
        for i in range(len(text)):
            if blank_pattern.match(text[i]) is not None:
                continue
            index_mapper[len(new_text)] = i
            new_text.append(text[i])
        return ''.join(new_text), index_mapper
    
    def process(self, text)->Dict[str, Any]:
        return_obj = {
            "name": [],
            "age": [],
            "gender": [],
            "phone": [],
            "email": [],
            "schools": [],
            "work_time": 0,
            "edus": [],
            "jobs": [],
            "titles": []
        }
        # 获取名字，先过滤所有空白字符，防止名字中间有空格
        remove_blanks_text, index_mapper = self.remove_blanks(text, re.compile(r' '))
        start_time = time.perf_counter()
        backup_name = []
        for block in self.split_to_blocks(remove_blanks_text):
            block_text,block_l = block['text'],block['start']
            entities = self.pipelines['name'](block_text)
            for entity in entities:
                if entity['entity']=='NAME':
                    if self.name_pattern.match(entity['word']) is not None:
                        obj = {
                            'start': index_mapper[block_l+entity['start']],
                            'end': index_mapper[block_l+entity['end']-1]+1,
                            'entity': 'NAME',
                            'text': entity['word']
                        }
                        repeat = False
                        for o in return_obj['name']:
                            if obj['start']==o['start'] and obj['end']==o['end']:
                                repeat = True
                                break
                        if not repeat:
                            obj['origin'] = text[obj['start']:obj['end']]
                            return_obj['name'].append(obj)
                    else:
                        obj = {
                            'start': index_mapper[block_l+entity['start']],
                            'end': index_mapper[block_l+entity['end']-1]+1,
                            'entity': 'NAME',
                            'text': entity['word']
                        }
                        repeat = False
                        for o in return_obj['name']:
                            if obj['start']==o['start'] and obj['end']==o['end']:
                                repeat = True
                                break
                        if not repeat:
                            obj['origin'] = text[obj['start']:obj['end']]
                            backup_name.append(obj)
        if len(return_obj['name'])==0:
            return_obj['name'] = backup_name
        end_time = time.perf_counter()
        self.logger.info(f"process name time: {end_time-start_time}")
        # 获取年龄
        start_time = time.perf_counter()
        for age_match in self.age_patterns[0].finditer(remove_blanks_text):
            age = None
            s,e = -1,-1
            if age_match.group(1) is not None:
                age = age_match.group(1)
                s,e = age_match.span(1)
            elif age_match.group(2) is not None:
                age = age_match.group(2)
                s,e = age_match.span(2)
            if age is not None:    
                return_obj['age'].append({
                    'start': index_mapper[s],
                    'end': index_mapper[e-1]+1,
                    'text': str(age),
                    'entity': 'AGE',
                    'origin': text[index_mapper[s]:index_mapper[e-1]+1]
                })
        for age_match in self.age_patterns[1].finditer(remove_blanks_text):
            age = None
            s,e = -1,-1
            year = age_match.group(2)
            if year is not None:
                year = int(year)
                month = age_match.group(4)
                if month is not None:
                    month = int(month)
                else:
                    month = 1
                day = age_match.group(6)
                if day is not None:
                    day = int(day)
                else:
                    day = 1
                age = date.today().year - year
                if date.today().month<month or (date.today().month==month and date.today().day<day):
                    age -= 1
            if age is not None:
                s,e = age_match.span(1)
                return_obj['age'].append({
                    'start': index_mapper[s],
                    'end': index_mapper[e-1]+1,
                    'text': str(age),
                    'entity': 'AGE',
                    'origin': text[index_mapper[s]:index_mapper[e-1]+1]
                })
        end_time = time.perf_counter()
        self.logger.info(f"process age time: {end_time-start_time}")
        start_time = time.perf_counter()
        # 获取学校
        for school_match in self.school_pattern.finditer(remove_blanks_text):
            start,end = school_match.span()
            expand_text, start, end = self.get_expand_span(remove_blanks_text, start, end)
            entities = self.pipelines['common'](expand_text)
            for entity in entities:
                if entity['entity']=="ORG" and self.school_pattern.search(entity['word']) is not None:
                    obj = {
                        'start': index_mapper[start+entity['start']],
                        'end': index_mapper[start+entity['end']-1]+1,
                        'entity': 'SCHOOL'
                    }
                    for school in self.schools:
                        if school in entity['word']:
                            obj['text'] = school
                            obj["level"] = self.schools[school]
                            break
                    repeat = False
                    for o in return_obj['schools']:
                        if obj['start']==o['start'] and obj['end']==o['end']:
                            repeat = True
                            break
                    if not repeat:
                        obj['origin'] = text[obj['start']:obj['end']]
                        if "text" not in obj:
                            obj['text'] = obj['origin'].split("\n")[-1]
                        return_obj['schools'].append(obj)
        # 正则找学校
        for school_match in re.finditer(r"|".join(self.schools.keys()), remove_blanks_text):
            start,end = school_match.span()
            obj = {
                'start': index_mapper[start],
                'end': index_mapper[end-1]+1,
                'entity': 'SCHOOL',
                'text': school_match.group().split('\n')[-1],
            }
            repeat = False
            for o in return_obj['schools']:
                if obj['start']==o['start'] and obj['end']==o['end']:
                    repeat = True
                    break
            if not repeat:
                obj['origin'] = text[obj['start']:obj['end']]
                obj['level'] = self.schools[obj['text']]
                return_obj['schools'].append(obj)
        return_obj['schools'] = sorted(return_obj['schools'], key=lambda x: x['start'])
        end_time = time.perf_counter()
        self.logger.info(f"process school time: {end_time-start_time}")
        start_time = time.perf_counter()
        # 获取学历
        for i,pattern in enumerate(self.edu_patterns):
            for edu_match in pattern.finditer(remove_blanks_text):
                start,end = edu_match.span()
                expand_text, start, end = self.get_expand_span(remove_blanks_text, start, end)
                entities = self.pipelines['common'](expand_text)
                for entity in entities:
                    if entity['entity']=='EDU' and pattern.search(entity['word']) is not None:
                        obj = {
                            'start': index_mapper[start+entity['start']],
                            'end': index_mapper[start+entity['end']-1]+1,
                            'text': self.edu_index[i],
                            'entity': 'EDU',
                        }
                        repeat = False
                        for o in return_obj['edus']:
                            if obj['start']==o['start'] and obj['end']==o['end']:
                                repeat = True
                                break
                        if not repeat:
                            obj['origin'] = text[obj['start']:obj['end']]
                            return_obj['edus'].append(obj)
        end_time = time.perf_counter()
        self.logger.info(f"process edu time: {end_time-start_time}")
        start_time = time.perf_counter()
        # 如果有工作经历
        if self.works_key_pattern.search(remove_blanks_text) is not None:
            for job_time_match in self.job_time_patterns.finditer(remove_blanks_text):
                origin_start,origin_end = job_time_match.span()
                # convert_to_date
                fr = self.to_date(job_time_match.group(1))
                if fr is None:
                    continue
                fs,fe = job_time_match.span(1)
                to = self.to_date(job_time_match.group(3))
                if to is None:
                    continue
                ts,te = job_time_match.span(3)
                expand_text, start, end = self.get_expand_span(remove_blanks_text, origin_start, origin_end, max_expand_length=50)
                entities = self.pipelines['common'](expand_text)
                objs = []
                for entity in entities:
                    if entity['entity']=="ORG":
                        obj = {
                            'start': index_mapper[start+entity['start']],
                            'end': index_mapper[start+entity['end']-1]+1,
                            'entity': 'COMPANY',
                            'text': entity['word'],
                            'dis': min(
                                abs(origin_start-start-entity['end']+1),
                                abs(origin_end-start-entity['start'])
                            ),
                        }
                        obj['origin'] = text[obj['start']:obj['end']]
                        objs.append(obj)
                objs.sort(key=lambda x:x['dis'])
                if len(objs)>0 and self.school_pattern.search(objs[0]['text']) is None:
                    del objs[0]['dis']
                    from_date = {
                        'start': index_mapper[fs],
                        'end': index_mapper[fe-1]+1,
                        'text': fr.isoformat(),
                        'entity': 'DATE',
                        'origin': text[index_mapper[fs]:index_mapper[fe-1]+1]
                    }
                    to_date = {
                        'start': index_mapper[ts],
                        'end': index_mapper[te-1]+1,
                        'text': to.isoformat(),
                        'entity': 'DATE',
                        'origin': text[index_mapper[ts]:index_mapper[te-1]+1]
                    }
                    jobs = [objs[0],from_date,to_date]
                    return_obj['jobs'].append(jobs)
            return_obj["jobs"].sort(key=lambda x:date.fromisoformat(x[1]['text']))
            # 计算工作时间
            last_end = None
            work_month = 0
            for i in range(0,len(return_obj["jobs"])):
                start = date.fromisoformat(return_obj["jobs"][i][1]['text'])
                end = date.fromisoformat(return_obj["jobs"][i][2]['text'])
                if last_end is not None and start<last_end:
                    start = last_end
                diff_y = end.year-start.year
                diff_m = end.month-start.month
                work_month += diff_y * 12 + diff_m
                last_end = end
            return_obj['work_time'] = max(math.ceil(work_month/12),0)
        end_time = time.perf_counter()
        self.logger.info(f"process work time: {end_time-start_time}")
        start_time = time.perf_counter()
        # 获取手机号码
        for phone_match in self.phone_pattern.finditer(text):
            start,end = phone_match.span()
            return_obj['phone'].append({
                'start': start,
                'end': end,
                'entity': 'PHONE',
                'origin': text[start:end],
                'text': re.sub('\s','',text[start:end])
            })
        end_time = time.perf_counter()
        self.logger.info(f"process phone time: {end_time-start_time}")
        start_time = time.perf_counter()
        for email_match in self.email_pattern.finditer(text):
            start,end = email_match.span()
            return_obj['email'].append({
                'start': start,
                'end': end,
                'entity': 'EMAIL',
                'origin': text[start:end],
                'text': re.sub('\s','',text[start:end])
            })
        end_time = time.perf_counter()
        self.logger.info(f"process email time: {end_time-start_time}")
        start_time = time.perf_counter()
        for gender_match in self.gender_pattern.finditer(text):
            start,end = gender_match.span(2)
            return_obj['gender'].append({
                'start': start,
                'end': end,
                'entity': 'GENDER',
                'origin': text[start:end],
                'text': text[start:end]
            })
        end_time = time.perf_counter()
        self.logger.info(f"process gender time: {end_time-start_time}")
        start_time = time.perf_counter()
        for block in self.split_to_blocks(remove_blanks_text):
            entities = self.pipelines["common"](block["text"])
            for entity in entities:
                if entity['entity']=='TITLE':
                    obj = {
                        'start': index_mapper[block['start']+entity['start']],
                        'end': index_mapper[block['start']+entity['end']-1]+1,
                        'text': entity['word'],
                        'entity': 'TITLE',
                    }
                    obj['origin'] = text[obj['start']:obj['end']]
                    repeat = False
                    for o in return_obj['titles']:
                        if obj['start']==o['start'] and obj['end']==o['end']:
                            repeat = True
                            break
                    if not repeat:
                        return_obj['titles'].append(obj)
        end_time = time.perf_counter()
        self.logger.info(f"process title time: {end_time-start_time}")
        return return_obj
    
    def __call__(self, *args: Any, **kwds: Any) -> Any:
        return self.process(*args, **kwds)

class PositionPredictor():

    def __init__(self, pipeline: Pipeline) -> None:
        self.pipeline = pipeline
        self.__init_split_data()
        self.logger = logging.getLogger(__name__)

    def __split_blocks(self, text: str) -> List[str]:
        start,end = 0,0
        blocks = []
        while end<len(text):
            if text[end] in self.splits:
                if end>start:
                    blocks.append(text[start:end])
                start = end+1
            end += 1
        if end>start:
            blocks.append(text[start:end])
        return blocks
    
    def __init_split_data(
        self
    ):
        self.splits = {'\\', '_', '"', '%', '{', '《', ')', '$', '(', '\n', '~', '*', ':', '!', '；', '”', '’', '\t', '？', '-', ';', '》', '】', '`', '、', '+', '“', '[', '—', '·', '）', '=', '‘', '}', '?', '，', '&', '@', '#', ']', '——', ' ', '.', '【', "'", '>', ',', '/', '：', '。', '...', '^', '（', '<', '|', '……', '！'}

    def predict(self, 
                positions: List[Dict[str,Union[str,List[str]]]], 
                resume: str
        ) -> List[Dict[str, Union[str, float]]]:
            ans = []
            resume_blocks = self.__split_blocks(resume)
            resume_encoding = []
            for block_resume in resume_blocks:
                resume_encoding.append(torch.tensor(self.pipeline(block_resume)[0]))
            resume_encoding = torch.stack(resume_encoding,dim=0)
            for position in positions:
                requireds = position['required']
                score = 0.0
                block_encodings = []
                for required in requireds:
                    blocks = self.__split_blocks(required)
                    for block in blocks:
                        block_encodings.append(torch.tensor(self.pipeline(block)[0]))
                block_encodings = torch.stack(block_encodings,dim=0)
                cos_sims = F.cosine_similarity(resume_encoding.unsqueeze(1), block_encodings.unsqueeze(0),dim=-1)
                score = cos_sims.max().item()
                self.logger.info(f"position: {position['name']}, score: {score}")
                ans.append({
                    'position': position['name'],
                    'score': score
                })
            ans.sort(key=lambda x:x['score'], reverse=True)
            return ans
    
    def __call__(self, *args: Any, **kwds: Any) -> Any:
        return self.predict(*args, **kwds)