import asyncio
import re
from typing import Union

from core.builtins import Bot, Plain
from core.logger import Logger
from modules.wiki.utils.dbutils import WikiTargetInfo
from modules.wiki.utils.wikilib import WikiLib
from .wiki import wiki, query_pages


@wiki.command('search <PageName> {{wiki.help.search}}')
async def _(msg: Bot.MessageSession):
    await search_pages(msg, msg.parsed_msg['<PageName>'])


async def search_pages(session: Bot.MessageSession, title: Union[str, list, tuple], use_prefix=True):
    target = WikiTargetInfo(session)
    start_wiki = target.get_start_wiki()
    interwiki_list = target.get_interwikis()
    headers = target.get_headers()
    prefix = target.get_prefix()
    enabled_fandom_addon = session.options.get('wiki_fandom_addon')
    if not start_wiki:
        await session.send_message(session.locale.t('wiki.message.set.default', prefix=session.prefixes[0]))
        start_wiki = 'https://zh.minecraft.wiki/api.php'
    if isinstance(title, str):
        title = [title]
    query_task = {start_wiki: {'query': [], 'iw_prefix': ''}}
    for t in title:
        if prefix and use_prefix:
            t = prefix + t
        if t[0] == ':':
            if len(t) > 1:
                query_task[start_wiki]['query'].append(t[1:])
        else:
            matched = False
            match_interwiki = re.match(r'^(.*?):(.*)', t)
            if match_interwiki:
                g1 = match_interwiki.group(1)
                g2 = match_interwiki.group(2)
                if g1 in interwiki_list:
                    interwiki_url = interwiki_list[g1]
                    if interwiki_url not in query_task:
                        query_task[interwiki_url] = {
                            'query': [], 'iw_prefix': g1}
                    query_task[interwiki_url]['query'].append(g2)
                    matched = True
                elif g1 == 'w' and enabled_fandom_addon:
                    if match_interwiki := re.match(r'(.*?):(.*)', match_interwiki.group(2)):
                        if match_interwiki.group(1) == 'c':
                            if match_interwiki := re.match(r'(.*?):(.*)', match_interwiki.group(2)):
                                interwiki_split = match_interwiki.group(
                                    1).split('.')
                                if len(interwiki_split) == 2:
                                    get_link = f'https://{interwiki_split[1]}.fandom.com/api.php'
                                    find = interwiki_split[0] + \
                                        ':' + match_interwiki.group(2)
                                    iw = 'w:c:' + interwiki_split[0]
                                else:
                                    get_link = f'https://{match_interwiki.group(1)}.fandom.com/api.php'
                                    find = match_interwiki.group(2)
                                    iw = 'w:c:' + match_interwiki.group(1)
                                if get_link not in query_task:
                                    query_task[get_link] = {
                                        'query': [], 'iw_prefix': iw}
                                query_task[get_link]['query'].append(find)
                                matched = True
            if not matched:
                query_task[start_wiki]['query'].append(t)
    Logger.debug(query_task)
    msg_list = []
    wait_msg_list = []
    for q in query_task:
        current_task = query_task[q]
        ready_for_query_pages = current_task['query'] if 'query' in current_task else []
        iw_prefix = (current_task['iw_prefix'] +
                     ':') if current_task['iw_prefix'] != '' else ''
        tasks = []
        for rd in ready_for_query_pages:
            tasks.append(asyncio.ensure_future(
                WikiLib(q, headers).search_page(rd)))
        query = await asyncio.gather(*tasks)
        for result in query:
            for r in result:
                wait_msg_list.append(iw_prefix + r)
    if len(wait_msg_list) != 0:
        msg_list.append(session.locale.t('wiki.message.search'))
        i = 0
        for w in wait_msg_list:
            i += 1
            w = f'{i}. {w}'
            msg_list.append(w)
        msg_list.append(session.locale.t('wiki.message.search.prompt'))
    reply = await session.wait_reply(Plain('\n'.join(msg_list)))
    if reply.as_display(text_only=True).isdigit():
        reply_number = int(reply.as_display(text_only=True)) - 1
        await query_pages(reply, wait_msg_list[reply_number])