import re
import traceback
import urllib

import aiohttp

import core.dirty_check
from .helper import check_wiki_available


class wikilib:
    async def get_data(self, url: str, fmt: str):
        async with aiohttp.ClientSession() as session:
            try:
                async with session.get(url, timeout=aiohttp.ClientTimeout(total=20)) as req:
                    if hasattr(req, fmt):
                        return await getattr(req, fmt)()
                    else:
                        raise ValueError(f"NoSuchMethod: {fmt}")
            except Exception:
                traceback.print_exc()
                return False

    def danger_wiki_check(self):
        if self.wikilink.upper().find('WIKIPEDIA') != -1:
            return True
        return False

    async def danger_text_check(self, text):
        if not self.danger_wiki_check():
            return False
        check = await core.dirty_check.check([text])
        print(check)
        if check.find('<吃掉了>') != -1 or check.find('<全部吃掉了>') != -1:
            return True
        return False

    async def get_interwiki(self, url):
        interwiki_list = url + '?action=query&meta=siteinfo&siprop=interwikimap&sifilteriw=local&format=json'
        json = await self.get_data(interwiki_list, 'json')
        interwikimap = json['query']['interwikimap']
        interwiki_dict = {}
        for interwiki in interwikimap:
            interwiki_dict[interwiki['prefix']] = re.sub(r'(?:wiki/|)\$1', '', interwiki['url'])
        return interwiki_dict

    async def get_image(self, pagename):
        try:
            url = self.wikilink + f'?action=query&titles={pagename}&prop=imageinfo&iiprop=url&format=json'
            json = await self.get_data(url, 'json')
            parsepageid = self.parsepageid(json)
            imagelink = json['query']['pages'][parsepageid]['imageinfo'][0]['url']
            return imagelink
        except:
            traceback.print_exc()
            return False

    async def getpage(self):
        getlinkurl = self.wikilink + '?action=query&format=json&prop=info&inprop=url&redirects&titles=' + self.pagename
        getpage = await self.get_data(getlinkurl, "json")
        return getpage

    def parsepageid(self, pageraw):
        pageraw = pageraw['query']['pages']
        pagelist = iter(pageraw)
        pageid = pagelist.__next__()
        return pageid

    async def researchpage(self):
        try:
            searchurl = self.wikilink + '?action=query&generator=search&gsrsearch=' + self.pagename + '&gsrsort=just_match&gsrenablerewrites&prop=info&gsrlimit=1&format=json'
            getsecjson = await self.get_data(searchurl, "json")
            secpageid = self.parsepageid(getsecjson)
            sectitle = getsecjson['query']['pages'][secpageid]['title']
            if self.interwiki == '':
                target = ''
            else:
                target = f'{self.interwiki}:'
            prompt = f'找不到{target}{self.pagename}，您是否要找的是：[[{target}{sectitle}]]？'
            if self.templateprompt:
                prompt = self.templateprompt + prompt
            if await self.danger_text_check(prompt):
                return {'status': 'done', 'text': 'https://wdf.ink/6OUp'}
            return {'status': 'wait', 'title': f'{target}{sectitle}', 'text': prompt}
        except Exception:
            try:
                searchurl = self.wikilink + '?action=query&list=search&srsearch=' + self.pagename + '&srwhat=text&srlimit=1&srenablerewrites=&format=json'
                getsecjson = await self.get_data(searchurl, "json")
                sectitle = getsecjson['query']['search'][0]['title']
                if self.interwiki == '':
                    target = ''
                else:
                    target = f'{self.interwiki}:'
                prompt = f'找不到{target}{self.pagename}，您是否要找的是：[[{target}{sectitle}]]？'
                if self.templateprompt:
                    prompt = self.templateprompt + prompt
                if await self.danger_text_check(prompt):
                    return {'status': 'done', 'text': 'https://wdf.ink/6OUp'}
                return {'status': 'wait', 'title': f'{target}{sectitle}', 'text': prompt}
            except Exception:
                traceback.print_exc()
                return {'status': 'done', 'text': '找不到条目。'}

    async def nullpage(self):
        if 'invalid' in self.psepgraw:
            rs1 = re.sub('The requested page title contains invalid characters:', '请求的页面标题包含非法字符：',
                         self.psepgraw['invalidreason'])
            rs = '发生错误：“' + rs1 + '”。'
            rs = re.sub('".”', '"”', rs)
            return {'status': 'done', 'text': rs}
        if 'missing' in self.psepgraw:
            self.rspt = await self.researchpage()
            return self.rspt
        self.orginwikilink = re.sub('api.php', '', self.orginwikilink)
        if not self.sentyouprompt:
            msg = self.orginwikilink + urllib.parse.quote(self.pagename.encode('UTF-8'))
        else:
            msg = '您要的' + self.pagename + '：' + self.orginwikilink + urllib.parse.quote(self.pagename.encode('UTF-8'))
        return {'status': 'done', 'text': msg}

    async def getdesc(self):
        try:
            descurl = self.wikilink + '?action=query&prop=extracts&exsentences=1&&explaintext&exsectionformat=wiki' \
                                      '&format=json&titles=' + self.pagename
            loadtext = await self.get_data(descurl, "json")
            pageid = self.parsepageid(loadtext)
            desc = loadtext['query']['pages'][pageid]['extract']
        except Exception:
            traceback.print_exc()
            desc = ''
        return desc

    async def getfirstline(self):
        try:
            descurl = self.wikilink + f'?action=parse&page={self.gflpagename}&prop=wikitext&section=1&format=json'
            loaddesc = await self.get_data(descurl, 'json')
            descraw = loaddesc['parse']['wikitext']['*']
            cutdesc = re.findall(r'(.*(?:!|\?|\.|;|！|？|。|；))', descraw, re.S | re.M)
            desc = cutdesc[0]
        except Exception:
            traceback.print_exc()
            desc = ''
        return desc

    async def step1(self):
        if self.template:
            self.pagename = 'Template:' + self.pagename
        self.pageraw = await self.getpage()
        if not self.pageraw:
            return {'status': 'done', 'text': '发生错误：无法获取到页面。'}
        if 'redirects' in self.pageraw['query']:
            self.pagename = self.pageraw['query']['redirects'][0]['to']
        self.pageid = self.parsepageid(self.pageraw)
        self.psepgraw = self.pageraw['query']['pages'][self.pageid]

        if self.pageid == '-1':
            if self.igmessage == False:
                if self.template == True:
                    self.pagename = self.orginpagename = re.sub(r'^Template:', '', self.pagename)
                    self.template = False
                    self.templateprompt = f'提示：[Template:{self.pagename}]不存在，已自动回滚搜索页面。\n'
                    return await self.step1()
                return await self.nullpage()
        else:
            return await self.step2()

    async def step2(self):
        fullurl = self.psepgraw['fullurl']
        geturlpagename = re.match(r'(https?://.*?/(?:index.php/|wiki/|.*/wiki/|))(.*)', fullurl, re.M | re.I)
        desc = await self.getdesc()
        if desc == '':
            self.gflpagename = geturlpagename.group(2)
            desc = await self.getfirstline()
        print(desc)
        try:
            section = re.match(r'.*(\#.*)', self.pagename)
            finpgname = geturlpagename.group(2) + urllib.parse.quote(section.group(1).encode('UTF-8'))
            fullurl = self.psepgraw['fullurl'] + urllib.parse.quote(section.group(1).encode('UTF-8'))
        except Exception:
            finpgname = geturlpagename.group(2)
        finpgname = urllib.parse.unquote(finpgname)
        finpgname = re.sub('_', ' ', finpgname)
        if finpgname == self.orginpagename:
            rmlstlb = re.sub('\n$', '', desc)
        else:
            rmlstlb = re.sub('\n$', '',
                             f'（重定向[{self.orginpagename}] -> [{finpgname}]）{desc}')
        rmlstlb = re.sub('\n\n', '\n', rmlstlb)
        rmlstlb = re.sub('\n\n', '\n', rmlstlb)
        try:
            rm5lline = re.findall(r'.*\n.*\n.*\n.*\n.*\n', rmlstlb)
            result = rm5lline[0] + '...行数过多已截断。'
        except Exception:
            result = rmlstlb
        msgs = {'status': 'done', 'url': fullurl, 'text': result}
        matchimg = re.match(r'File:.*?\.(?:png|gif|jpg|jpeg|webp|bmp|ico)', self.pagename, re.I)
        if matchimg:
            getimg = await self.get_image(self.pagename)
            if getimg:
                msgs['net_image'] = getimg
        if await self.danger_text_check(result):
            return {'status': 'done', 'text': 'https://wdf.ink/6OUp'}
        return msgs

    async def main(self, wikilink, pagename, interwiki=None, igmessage=False, template=False, tryiw=0):
        print(wikilink)
        print(pagename)
        print(interwiki)
        if pagename == '':
            return {'status': 'done', 'text': '错误：需要查询的页面为空。'}
        pagename = re.sub('_', ' ', pagename)
        pagename = pagename.split('|')[0]
        self.orginwikilink = wikilink
        self.wikilink = re.sub('index.php/', '', self.orginwikilink)  # fxxk
        danger_check = self.danger_wiki_check()
        if danger_check:
            if await self.danger_text_check(pagename):
                return {'status': 'done', 'text': 'https://wdf.ink/6OUp'}
        self.orginpagename = pagename
        self.pagename = pagename
        if interwiki == None:
            self.interwiki = ''
        else:
            self.interwiki = interwiki
        self.igmessage = igmessage
        self.template = template
        self.templateprompt = None
        try:
            matchinterwiki = re.match(r'(.*?):(.*)', self.pagename)
            if matchinterwiki:
                iwlist = await self.get_interwiki(self.wikilink)
                print(iwlist)
                if matchinterwiki.group(1) in iwlist:
                    if tryiw <= 5:
                        interwiki_link = iwlist[matchinterwiki.group(1)]
                        check = await check_wiki_available(interwiki_link)
                        if check:
                            return await self.main(check[0], matchinterwiki.group(2),
                                                   matchinterwiki.group(1),
                                                   self.igmessage, self.template, self.sentyouprompt, tryiw + 1)
                        else:
                            return {'status': 'done',
                                    'text': f'发生错误：指向的interwiki不是一个有效的MediaWiki。{interwiki_link}{matchinterwiki.group(2)}'}
                    else:
                        return {'status': 'warn', 'text': '警告：尝试重定向已超过5次，继续尝试将有可能导致你被机器人加入黑名单。'}
            return await self.step1()

        except Exception as e:
            traceback.print_exc()
            if igmessage == False:
                return f'发生错误：{str(e)}' + '\n'