import fetch, { FormData } from 'node-fetch'
import { makeForwardMsg } from './common.js'
import { Config } from './config.js'
import { getProxy } from './proxy.js'
import crypto from 'crypto'

let proxy = getProxy()
export default class BingDrawClient {
  constructor (opts) {
    this.opts = opts
    if (Config.proxy && !Config.sydneyForceUseReverse) {
      // 如果设置代理，走代理
      this.opts.baseUrl = 'https://www.bing.com'
    }
  }

  async getImages (prompt, e) {
    let urlEncodedPrompt = encodeURIComponent(prompt)
    let url = `${this.opts.baseUrl}/images/create?q=${urlEncodedPrompt}&rt=4&FORM=GENCRE`
    // let d = Math.ceil(Math.random() * 255)
    // let randomIp = '141.11.138.' + d
    let headers = {
      // accept: 'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.7',
      // 'accept-language': 'en-US,en;q=0.9',
      // 'cache-control': 'max-age=0',
      'content-type': 'application/x-www-form-urlencoded',
      referrer: 'https://www.bing.com/images/create/',
      origin: 'https://www.bing.com',
      'user-agent': 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.0.0 Safari/537.36 Edg/113.0.1774.50',
      cookie: this.opts.cookies || `_U=${this.opts.userToken}`,
      // 'x-forwarded-for': randomIp,
      Dnt: '1',
      'sec-ch-ua': '"Microsoft Edge";v="113", "Chromium";v="113", "Not-A.Brand";v="24"',
      'sec-ch-ua-arch': '"x86"',
      'sec-ch-ua-bitness': '"64"',
      'sec-ch-ua-full-version': '"113.0.5672.126"',
      'sec-ch-ua-full-version-list': '"Google Chrome";v="113.0.5672.126", "Chromium";v="113.0.5672.126", "Not-A.Brand";v="24.0.0.0"',
      'sec-ch-ua-mobile': '?0',
      'sec-ch-ua-model': '',
      'sec-ch-ua-platform': '"macOS"',
      'sec-ch-ua-platform-version': '"13.1.0"',
      'sec-fetch-dest': 'document',
      'sec-fetch-mode': 'navigate',
      'sec-fetch-site': 'same-origin',
      'sec-fetch-user': '?1',
      'Referrer-Policy': 'origin-when-cross-origin',
      'x-edge-shopping-flag': '1'
    }
    // headers['x-forwarded-for'] = '141.11.138.30'
    let body = new FormData()
    body.append('q', urlEncodedPrompt)
    body.append('qs', 'ds')
    let fetchOptions = {
      headers
    }
    if (Config.proxy) {
      fetchOptions.agent = proxy(Config.proxy)
    }
    let success = false
    let retry = 1
    let response
    while (!success && retry >= 0) {
      response = await fetch(url, Object.assign(fetchOptions, { body, redirect: 'manual', method: 'POST', credentials: 'include' }))
      let res = await response.text()
      if (res.toLowerCase().indexOf('this prompt has been blocked') > -1) {
        throw new Error('Your prompt has been blocked by Bing. Try to change any bad words and try again.')
      }
      if (response.status !== 302) {
        if (this.debug) {
          console.debug(`第一次重试绘图:${prompt}`)
        }
        url = `${this.opts.baseUrl}/images/create?q=${urlEncodedPrompt}&rt=3&FORM=GENCRE`
        response = await fetch(url, Object.assign(fetchOptions, { body, redirect: 'manual', method: 'POST', credentials: 'include' }))
      }
      if (response.status === 302) {
        success = true
        break
      } else {
        retry--
      }
    }
    if (!success) {
      // 最后尝试使用https://cn.bing.com进行一次绘图
      logger.info('尝试使用https://cn.bing.com进行绘图')
      url = `https://cn.bing.com/images/create?q=${urlEncodedPrompt}&rt=3&FORM=GENCRE`
      fetchOptions.referrer = 'https://cn.bing.com/images/create/'
      fetchOptions.origin = 'https://cn.bing.com'
      response = await fetch(url, Object.assign(fetchOptions, { body, redirect: 'manual', method: 'POST', credentials: 'include' }))
      if (response.status !== 302) {
        throw new Error('绘图失败，请检查Bing token和代理/反代配置')
      }
    }
    let redirectUrl = response.headers.get('Location').replace('&nfy=1', '')
    let requestId = redirectUrl.split('id=')[1]
    // 模拟跳转
    await fetch(`${this.opts.baseUrl}${redirectUrl}`, {
      headers
    })
    let pollingUrl = `${this.opts.baseUrl}/images/create/async/results/${requestId}?q=${urlEncodedPrompt}`
    logger.info({ pollingUrl })
    logger.info('waiting for bing draw results...')
    let timeoutTimes = 50
    let found = false
    let timer = setInterval(async () => {
      if (found) {
        return
      }
      let r = await fetch(pollingUrl, fetchOptions)
      let rText = await r.text()
      if (r.status === 200 && rText) {
        // logger.info(rText)
        logger.info('got bing draw results!')
        found = true
        let regex = /src="([^"]+)"/g
        let imageLinks = rText.match(regex)
        if (!imageLinks || imageLinks.length === 0) {
          // 很可能是微软内部error，重试即可
          return
        }
        imageLinks = imageLinks
          .map(link => link.split('?w=')[0])
          .map(link => link.replace('src="', ''))
          .filter(link => !link.includes('.svg'))
        imageLinks = [...new Set(imageLinks)]
        const badImages = [
          'https://r.bing.com/rp/in-2zU3AJUdkgFe7ZKv19yPBHVs.png"',
          'https://r.bing.com/rp/TX9QuO3WzcCJz1uaaSwQAz39Kb0.jpg"',
          'https://r.bing.com/rp/in-2zU3AJUdkgFe7ZKv19yPBHVs.png',
          'https://r.bing.com/rp/TX9QuO3WzcCJz1uaaSwQAz39Kb0.jpg'
        ]
        for (let imageLink of imageLinks) {
          if (badImages.indexOf(imageLink) > -1) {
            await e.reply('❌绘图失败：绘图完成但被屏蔽，请调整提示词。', true)
            logger.error(rText)
          }
        }
        logger.info(imageLinks)
        let images = imageLinks.map(link => segment.image(link))
        let msg = await makeForwardMsg(e, images, `bing绘图结果：${prompt}`)
        await e.reply(msg)
        clearInterval(timer)
      } else {
        if (timeoutTimes === 0) {
          await e.reply('❌绘图超时', true)
          clearInterval(timer)
          timer = null
        } else {
          logger.info('still waiting for bing draw results... times left: ' + timeoutTimes)
          timeoutTimes--
        }
      }
    }, 3000)
  }
}