import type { Message } from 'node-telegram-bot-api'
import bot from '@bot'
import prisma from '@prisma'
import { type Browser, chromium, type Page } from 'playwright'
import { askOpenCode } from '../openai'

// const SESSION_FILE = path.resolve('./session.json')

interface ApplyOptions {
  query: string
  area?: number
  maxApplies?: number
}

interface ApplyResult {
  applied: string[]
  skipped: string[]
  errors: string[]
  error?: string
}

function randomDelay(min = 300, max = 2000) {
  return min + Math.random() * (max - min)
}

async function humanDelay(min = 300, max = 2000) {
  return new Promise(r => setTimeout(r, randomDelay(min, max)))
}

async function randomScroll(page: Page) {
  await page.mouse.move(100 + Math.random() * 500, 200 + Math.random() * 500)
  await page.mouse.wheel(0, 300 + Math.random() * 1000)
}

async function getBrowser(): Promise<Browser> {
  return chromium.launch({ headless: false })
}

async function loadSession(page: Page, telegramId: bigint | number): Promise<boolean> {
  const user = await prisma.user.findUnique({
    where: { telegramId },
  })

  const session = user?.session

  if (!session)
    return false

  const cookies = JSON.parse(session)
  await page.context().addCookies(cookies)
  return true
}

function waitForOtp(chatId: number): Promise<string> {
  return new Promise((resolve) => {
    const handler = (msg: Message) => {
      if (msg.chat.id !== chatId)
        return

      if (!msg.text)
        return

      bot.removeListener('message', handler)
      resolve(msg.text)
    }

    bot.on('message', handler)
  })
}

export async function login(
  email: string,
  chatId: number,
): Promise<void> {
  const browser = await getBrowser()
  await bot.sendMessage(chatId, `Browser is connected: ${browser.isConnected()}`)
  if (!browser.version())
    return
  await bot.sendMessage(chatId, `Browser version: ${browser.version()}`)

  const context = await browser.newContext()
  const page = await context.newPage()

  await page.goto('https://hh.ru/account/login', { waitUntil: 'networkidle' })

  await bot.sendMessage(chatId, `page: ${page.url()}`)

  await page.click('[data-qa="submit-button"]')

  await page.waitForTimeout(randomDelay())

  await bot.sendMessage(chatId, `Клик по "Войти"`)

  await page.click('label:has([data-qa="credential-type-EMAIL"])')

  await page.waitForTimeout(randomDelay())

  await bot.sendMessage(chatId, `Клик по "Email"`)

  await page.waitForTimeout(randomDelay())

  await page.fill('[data-qa="applicant-login-input-email"]', email)

  await page.waitForTimeout(randomDelay())

  await bot.sendMessage(chatId, `Ввод "Email"`)

  await page.click('[data-qa="submit-button"]')

  await bot.sendMessage(chatId, `Клик по "Дальше"`)

  await page.waitForTimeout(randomDelay())

  await bot.sendMessage(chatId, '🔑 Введи код из email')

  await page.waitForTimeout(randomDelay())

  await page.click('[data-qa="applicant-login-input-otp"]')

  const otp = await waitForOtp(chatId)

  await page.fill('[data-qa="applicant-login-input-otp"] input', otp)

  await bot.sendMessage(chatId, `Введён ОТП: ${otp}`)

  await page.waitForTimeout(randomDelay())

  await page.waitForLoadState('networkidle')

  const cookies = await context.cookies()

  await prisma.user.update({
    where: { telegramId: chatId },
    data: {
      session: JSON.stringify(cookies, null, 2),
    },
  })

  await bot.sendMessage(chatId, `cookies: ${cookies.length}`)

  await browser.close()
}

export async function checkIsAuth(telegramId: bigint | number) {
  const browser = await getBrowser()
  const context = await browser.newContext()
  const page = await context.newPage()

  await loadSession(page, telegramId)

  console.log('Сессия загружена')

  const url = `https://hh.ru/search/vacancy`

  await page.goto(url, { waitUntil: 'networkidle' })

  try {
    return await page.$('[data-qa="profileAndResumes-button"]')
  }
  catch (e) {
    return e
  }
  // return await page.$('[data-qa="mainmenu_createResume"]')
}

export interface ResumeListItem {
  title: string
  href: string
}

export async function listResumes(chatId: number): Promise<ResumeListItem[]> {
  const browser = await getBrowser()
  const context = await browser.newContext()
  const page = await context.newPage()
  await loadSession(page, chatId)
  await page.goto('https://hh.ru/applicant/resumes', { waitUntil: 'networkidle' })

  const resumes = await page.$$eval(
    '[data-qa^="resume-card-link-"]',
    links => links.map(a => ({
      href: (a as HTMLAnchorElement).getAttribute('href') ?? '',
      title: a.textContent?.trim() ?? '(без названия)',
    })),
  )

  await browser.close()
  return resumes
}

export async function saveResume(chatId: number, resumeHref: string): Promise<string | undefined> {
  const browser = await getBrowser()
  const context = await browser.newContext()
  const page = await context.newPage()
  await loadSession(page, chatId)

  const id = new URL(`https://hh.ru${resumeHref}`).pathname.split('/').pop()!
  const resumeUrl = `https://hh.ru/resume_converter/resume.txt?hash=${id}&type=txt&hhtmFrom=&hhtmSource=resume`

  await page.goto(resumeUrl, { waitUntil: 'networkidle' })

  let resume: string | undefined
  try {
    resume = await page.locator('.resume').innerText()
    await prisma.resume.upsert({
      where: { id },
      create: { data: resume, id, telegramId: chatId },
      update: { data: resume },
    })
  }
  catch (e) {
    console.log(e)
    await bot.sendMessage(chatId, 'Нет резюме на ХХ, создайте')
  }
  finally {
    await browser.close()
  }

  return resume
}

export async function applyToJobs({
  query,
  area = 1,
  maxApplies = 10,
}: ApplyOptions, { chatId }: {
  chatId: number
}): Promise<ApplyResult> {
  const browser = await getBrowser()
  const context = await browser.newContext()
  const page = await context.newPage()
  const results: ApplyResult = { applied: [], skipped: [], errors: [] }

  try {
    await loadSession(page, chatId)

    const url = `https://hh.ru/search/vacancy?text=${encodeURIComponent(query)}&area=${area}`
    await page.goto(url, { waitUntil: 'networkidle' })

    const isLoggedIn = await page.$('[data-qa="profileAndResumes-button"]')
    // await page.$('[data-qa="mainmenu_myResumes"]')
    if (!isLoggedIn) {
      return { ...results, error: 'Не авторизован. Выполните login' }
    }

    await bot.sendMessage(chatId, `✅ Авторизация выполнена`)

    const vacancies = await page.$$eval(
      '[data-qa="serp-item__title"]',
      links => links.map(a => ({
        href: (a as HTMLAnchorElement).href,
        title: a.textContent?.trim() ?? '',
      })),
    )

    await bot.sendMessage(chatId, `✅ Вакансий найдено: ${vacancies.length}`)

    for (const vacancy of vacancies.slice(0, maxApplies)) {
      try {
        await bot.sendMessage(chatId, `🔄 Обрабатывается вакансия: ${vacancy.title}`)
        await page.goto(vacancy.href, { waitUntil: 'networkidle' })

        const description = await page
          .locator('[data-qa="vacancy-description"]')
          .innerText()

        if (!description) {
          await bot.sendMessage(chatId, `😬 Ошибка с получением описания`)
          continue
        }

        await bot.sendMessage(chatId, `✅ Описание получено`)

        const resume = await prisma.resume.findFirst({
          where: { telegramId: chatId },
        })

        if (!resume?.data) {
          results.errors.push(`${vacancy.title}: резюме не выбрано — выберите резюме через меню`)
          continue
        }

        const user = await prisma.user.findUnique({
          where: { telegramId: chatId },
        })

        // const letter = await askGPT(resume!.data, description, user!.prompt)
        const letter = await askOpenCode(resume!.data, description, user!.prompt)

        await bot.sendMessage(chatId, `✅ Сопроводительное письмо отправлено: ${letter}`)

        // const applyBtn = await page.$('[data-qa="vacancy-response-link-top"]')
        // if (!applyBtn) {
        //   results.skipped.push(vacancy.title)
        //   continue
        // }
        //
        // await randomScroll(page)
        //
        // await applyBtn.click()
        // await page.waitForTimeout(randomDelay())
        //
        // const submitBtn = await page.$('[data-qa="vacancy-response-popup-submit"]')
        // if (submitBtn) {
        //   await submitBtn.click()
        //   await page.waitForTimeout(randomDelay())
        // }

        results.applied.push(vacancy.title)
        // await page.waitForTimeout(3000 + Math.random() * 2000)
      }
      catch (err) {
        results.errors.push(`${vacancy.title}: ${(err as Error).message}`)
      }
    }
  }
  finally {
    await browser.close()
  }

  return results
}