import { randomBytes } from 'node:crypto'

import type { JsonValue } from '@geo/shared-types'

import type { PublishAdapter, PublishAdapterContext } from './base'
import {
  extractImageSources,
  normalizeArticleHtml,
  sessionCookieValue,
  sessionFetchJson,
  uploadHtmlImages,
} from './common'
import { fetchImageAssetBlob } from './media-image'

type SohuRegisterInfoResponse = {
  data?: {
    account?: {
      id?: string | number
      nickName?: string
      avatar?: string
    }
  }
}

type SohuAccountListResponse = {
  code?: number
  data?: {
    data?: Array<{
      accounts?: SohuRawAccount[]
    }>
  }
}

type SohuRawAccount = {
  id?: string | number
  nickName?: string
  avatar?: string
}

type SohuSubmitResponse = {
  code?: number
  success?: boolean
  data?: string | number
  msg?: string
  message?: string
}

type SohuUploadResponse = {
  url?: string
  msg?: string
  message?: string
}

type SohuAccount = {
  id: string
  name: string
}

type SohuPublishType = 'publish' | 'draft'

const SOHU_ORIGIN = 'https://mp.sohu.com'
const SOHU_MANAGE_URL = `${SOHU_ORIGIN}/mpfe/v4/contentManagement/first/page?newsType=1`
const SOHU_PUBLISH_URL = `${SOHU_ORIGIN}/mpbp/bp/news/v4/news/publish/v2`
const SOHU_DRAFT_URL = `${SOHU_ORIGIN}/mpbp/bp/news/v4/news/draft/v2`

function stringId(value: unknown): string {
  if (typeof value === 'number') {
    return Number.isFinite(value) ? String(value) : ''
  }
  if (typeof value !== 'string') {
    return ''
  }
  return value.trim()
}

function resolvePublishType(payload: Record<string, unknown>): SohuPublishType {
  return payload.publish_type === 'draft' || payload.publishType === 'draft' ? 'draft' : 'publish'
}

function isSohuSuccess(response: SohuSubmitResponse | null | undefined): boolean {
  return Boolean(response?.data) && (response?.success === true || response?.code === 2_000_000)
}

function sohuResponseMessage(
  response: { msg?: string; message?: string; code?: number } | null | undefined,
): string {
  return response?.msg || response?.message || `sohuhao_error_${response?.code ?? 'unknown'}`
}

function isSohuChallengeMessage(message: string): boolean {
  return /(验证码|滑块|人机验证|安全验证|请完成验证|短信验证|扫码验证|captcha|challenge|verification required|风险|风控)/i.test(
    message,
  )
}

function generateDeviceId(): string {
  return randomBytes(16).toString('hex')
}

async function cookieHeaderForUrl(
  context: PublishAdapterContext,
  url = SOHU_ORIGIN,
): Promise<string> {
  const cookies = await context.session.cookies.get({ url }).catch(() => [])
  return cookies.map((cookie) => `${cookie.name}=${cookie.value}`).join('; ')
}

async function sohuSpCm(context: PublishAdapterContext): Promise<string> {
  const cookieValue =
    (await sessionCookieValue(context.session, 'sohu.com', 'mp-cv').catch(() => '')) ||
    (await sessionCookieValue(context.session, 'mp.sohu.com', 'mp-cv').catch(() => ''))
  return cookieValue || `100-${Date.now()}-${generateDeviceId()}`
}

async function sohuHeaders(
  context: PublishAdapterContext,
  extra: Record<string, string> = {},
): Promise<Record<string, string>> {
  const cookie = await cookieHeaderForUrl(context)
  return {
    accept: 'application/json, text/plain, */*',
    origin: SOHU_ORIGIN,
    referer: `${SOHU_ORIGIN}/`,
    'x-requested-with': 'XMLHttpRequest',
    ...(cookie ? { cookie } : {}),
    ...extra,
  }
}

function accountFromRaw(account: SohuRawAccount | null | undefined): SohuAccount | null {
  const id = stringId(account?.id)
  const name = account?.nickName?.trim() || ''
  return id && name ? { id, name } : null
}

async function fetchAccount(context: PublishAdapterContext): Promise<SohuAccount | null> {
  const registerInfo = await sessionFetchJson<SohuRegisterInfoResponse>(
    context.session,
    `${SOHU_ORIGIN}/mpbp/bp/account/register-info`,
    {
      credentials: 'include',
      headers: await sohuHeaders(context),
    },
    { signal: context.signal },
  ).catch(() => null)

  const account = accountFromRaw(registerInfo?.data?.account)
  if (account) {
    return account
  }

  const accountListURL = new URL(`${SOHU_ORIGIN}/mpbp/bp/account/list`)
  accountListURL.searchParams.set('_', String(Date.now()))
  const list = await sessionFetchJson<SohuAccountListResponse>(
    context.session,
    accountListURL.toString(),
    {
      credentials: 'include',
      headers: await sohuHeaders(context),
    },
    { signal: context.signal },
  ).catch(() => null)

  for (const group of list?.data?.data ?? []) {
    for (const raw of group.accounts ?? []) {
      const listed = accountFromRaw(raw)
      if (listed) {
        return listed
      }
    }
  }

  return null
}

async function uploadImage(
  context: PublishAdapterContext,
  accountId: string,
  sourceUrl: string,
): Promise<string | null> {
  const image = await fetchImageAssetBlob(sourceUrl, { signal: context.signal })
  if (!image) {
    return null
  }

  const form = new FormData()
  form.append('file', image.blob, image.fileName)
  form.append('accountId', accountId)

  const url = new URL(`${SOHU_ORIGIN}/commons/front/outerUpload/image/file`)
  url.searchParams.set('accountId', accountId)

  const response = await sessionFetchJson<SohuUploadResponse>(
    context.session,
    url.toString(),
    {
      method: 'POST',
      credentials: 'include',
      headers: await sohuHeaders(context, {
        'sp-cm': await sohuSpCm(context),
      }),
      body: form,
    },
    { signal: context.signal },
  ).catch(() => null)

  return response?.url?.trim() || null
}

async function submitArticle(
  context: PublishAdapterContext,
  account: SohuAccount,
  html: string,
  publishType: SohuPublishType,
): Promise<string> {
  const coverUrl = context.article.cover_asset_url
    ? await uploadImage(context, account.id, context.article.cover_asset_url).catch(() => null)
    : ''

  const url = new URL(publishType === 'draft' ? SOHU_DRAFT_URL : SOHU_PUBLISH_URL)
  url.searchParams.set('accountId', account.id)

  const body = {
    title: context.article.title?.trim() || '未命名文章',
    content: html,
    brief: '',
    channelId: 30,
    categoryId: -1,
    cover: coverUrl || '',
    accountId: Number(account.id),
    // keep infoResource: 0 不要动
    infoResource: 0,
  }

  const response = await sessionFetchJson<SohuSubmitResponse>(
    context.session,
    url.toString(),
    {
      method: 'POST',
      credentials: 'include',
      headers: await sohuHeaders(context, {
        'content-type': 'application/json',
        'dv-id': generateDeviceId(),
        'sp-cm': await sohuSpCm(context),
      }),
      body: JSON.stringify(body),
    },
    { signal: context.signal },
  ).catch(
    (error): SohuSubmitResponse => ({
      code: -1,
      msg: error instanceof Error ? error.message : 'sohuhao_submit_failed',
    }),
  )

  if (!isSohuSuccess(response)) {
    const message = sohuResponseMessage(response)
    if (isSohuChallengeMessage(message)) {
      throw new Error(`sohuhao_challenge_required:${message}`)
    }
    throw new Error(`sohuhao_submit_failed:${message}`)
  }

  return stringId(response.data)
}

function buildResultPayload(
  articleId: string,
  accountId: string,
  mediaName: string,
  publishType: SohuPublishType,
): Record<string, JsonValue> {
  const editUrl = `${SOHU_ORIGIN}/mpfe/v4/contentManagement/news/addarticle?spm=smmp.articlelist.0.0&contentStatus=2&id=${encodeURIComponent(articleId)}`
  const articleUrl =
    publishType === 'publish'
      ? `https://www.sohu.com/a/${encodeURIComponent(articleId)}_${encodeURIComponent(accountId)}`
      : null
  return {
    platform: 'sohuhao',
    media_name: mediaName,
    external_article_id: articleId,
    external_manage_url: editUrl || SOHU_MANAGE_URL,
    external_article_url: articleUrl,
    publish_type: publishType,
  }
}

function failureResult(
  error: unknown,
): ReturnType<PublishAdapter['publish']> extends Promise<infer T> ? T : never {
  const message = error instanceof Error ? error.message : String(error)

  if (message === 'sohuhao_not_logged_in') {
    return {
      status: 'failed',
      summary: '搜狐号登录态失效，无法执行发布。',
      error: {
        code: 'sohuhao_not_logged_in',
        message,
      },
    }
  }

  if (message === 'article_content_empty') {
    return {
      status: 'failed',
      summary: '文章内容为空，无法推送到搜狐号。',
      error: {
        code: 'article_content_empty',
        message,
      },
    }
  }

  if (message.startsWith('sohuhao_challenge_required') || isSohuChallengeMessage(message)) {
    return {
      status: 'failed',
      summary: '搜狐号触发平台验证，请在搜狐号后台完成验证后重试。',
      error: {
        code: 'sohuhao_challenge_required',
        message,
      },
    }
  }

  if (message.startsWith('sohuhao_submit_failed')) {
    return {
      status: 'failed',
      summary: '搜狐号提交失败，请稍后重试或打开搜狐号后台确认内容状态。',
      error: {
        code: 'sohuhao_submit_failed',
        message,
      },
    }
  }

  return {
    status: 'failed',
    summary: '搜狐号发布失败。',
    error: {
      code: 'sohuhao_publish_failed',
      message,
    },
  }
}

export const sohuhaoAdapter: PublishAdapter = {
  platform: 'sohuhao',
  executionMode: 'session',
  async publish(context, payload) {
    try {
      context.reportProgress('sohuhao.detect_login')
      const account = await fetchAccount(context)
      if (!account) {
        throw new Error('sohuhao_not_logged_in')
      }

      context.reportProgress('sohuhao.normalize_html')
      let html = normalizeArticleHtml(context.article)
      if (!html) {
        throw new Error('article_content_empty')
      }

      const coverAssetUrl = context.article.cover_asset_url?.trim() || ''
      if (coverAssetUrl && extractImageSources(html).length === 0) {
        html = `<img src="${coverAssetUrl}" />${html}`
      }

      context.reportProgress('sohuhao.upload_content_images')
      const processed = await uploadHtmlImages(
        html,
        async (sourceUrl) => uploadImage(context, account.id, sourceUrl),
        { signal: context.signal },
      )
      const publishType = resolvePublishType(payload)

      context.reportProgress('sohuhao.submit')
      const articleId = await submitArticle(context, account, processed.html, publishType)

      return {
        status: 'succeeded',
        summary: publishType === 'draft' ? '搜狐号草稿保存成功。' : '搜狐号发布成功。',
        payload: buildResultPayload(articleId, account.id, account.name, publishType),
      }
    } catch (error) {
      return failureResult(error)
    }
  },
}