import io
import re

from decimal import Decimal
from langchain.callbacks import get_openai_callback
from PIL import Image as PILImage

from config import Config
from core.builtins import Bot, Plain, Image
from core.component import module
from core.dirty_check import check_bool, rickroll
from core.exceptions import NoReportException
from database import BotDBUtil
from .agent import agent_executor
from .formatting import generate_latex, generate_code_snippet

ONE_K = Decimal('1000')
# https://openai.com/pricing
BASE_COST_GPT_3_5 = Decimal('0.002')  # gpt-3.5-turbo： $0.002 / 1K tokens
# We are not tracking specific tool usage like searches b/c I'm too lazy, use a universal multiplier
THIRD_PARTY_MULTIPLIER = Decimal('1.5')
PROFIT_MULTIPLIER = Decimal('1.1')  # At the time we are really just trying to break even
PRICE_PER_1K_TOKEN = BASE_COST_GPT_3_5 * THIRD_PARTY_MULTIPLIER * PROFIT_MULTIPLIER
# Assuming 1 USD = 7.3 CNY, 100 petal = 1 CNY
USD_TO_CNY = Decimal('7.3')
CNY_TO_PETAL = 100

a = module('ask', developers=['Dianliang233'], desc='{ask.help.desc}')


@a.command('<question> {{ask.help}}')
@a.regex(r'^(?:question||问|問)[\:：]\s?(.+?)[?？]$', flags=re.I, desc='{ask.help.regex}')
async def _(msg: Bot.MessageSession):
    is_superuser = msg.checkSuperUser()
    if not Config('openai_api_key'):
        raise Exception(msg.locale.t('error.config.secret.not_found'))
    if not is_superuser and msg.data.petal <= 0:  # refuse
        await msg.finish(msg.locale.t('core.message.petal.no_petals')+ Config('issue_url'))

    
    qc = BotDBUtil.CoolDown(msg, 'call_openai')
    c = qc.check(60)
    if c == 0 or msg.target.targetFrom == 'TEST|Console' or is_superuser:
        if hasattr(msg, 'parsed_msg'):
            question = msg.parsed_msg['<question>']
        else:
            question = msg.matched_msg[0]
        if await check_bool(question):
            rickroll(msg)
        with get_openai_callback() as cb:
            res = await agent_executor.arun(question)
            tokens = cb.total_tokens
        if not is_superuser:
            price = tokens / ONE_K * PRICE_PER_1K_TOKEN
            petal = price * USD_TO_CNY * CNY_TO_PETAL
            msg.data.modify_petal(-petal)

        blocks = parse_markdown(res)

        chain = []
        for block in blocks:
            if block['type'] == 'text':
                chain.append(Plain(block['content']))
            elif block['type'] == 'latex':
                chain.append(Image(PILImage.open(io.BytesIO(await generate_latex(block['content'])))))
            elif block['type'] == 'code':
                chain.append(Image(PILImage.open(io.BytesIO(await generate_code_snippet(block['content']['code'], block['content']['language'])))))

        if await check_bool(res):
            rickroll(msg)
        await msg.sendMessage(chain)

        if msg.target.targetFrom != 'TEST|Console' and not is_superuser:
            qc.reset()
    else:
        await msg.finish(msg.locale.t('ask.message.cooldown', time=int(c)))


def parse_markdown(md: str):
    regex = r'(```[\s\S]*?\n```|\$[\s\S]*?\$|[^\n]+)'

    blocks = []
    for match in re.finditer(regex, md):
        content = match.group(1)
        print(content)
        if content.startswith('```'):
            block = 'code'
            try:
                language, code = re.match(r'```(.*)\n([\s\S]*?)\n```', content).groups()
            except AttributeError:
                raise ValueError('Code block is missing language or code')
            content = {'language': language, 'code': code}
        elif content.startswith('$'):
            block = 'latex'
            content = content[1:-1].strip()
        else:
            block = 'text'
        blocks.append({'type': block, 'content': content})

    return blocks