import { defineStore } from 'pinia'
import { apiClient } from '@/shared/api/client'
import type { ApiResponse } from '@/shared/types/types'

export interface DistributionBanner {
  image_url: string
  link_url?: string
  title?: string
}

export interface DistributionFooterInfo {
  icp?: string
  copyright?: string
  contact?: string
  disclaimer?: string
}

export interface DistributionSiteInfo {
  site_code: string
  site_name: string
  domain: string
  status: string
  display_account_enabled: boolean
  default_support_group_id?: number | null
  logo_url?: string
  favicon_url?: string
  banners_json?: string
  announcements_json?: string
  footer_info_json?: string
  receive_ratio_delta?: number
  receive_cost_delta?: number
}

/**
 * 获取当前上下文生效的分销站点编码
 * 优先级：
 * 1. 环境变量 VITE_DISTRIBUTION_SITE_CODE（针对独立分销前台开发端口，如 5191）
 * 2. 当前标签页 sessionStorage 中的 hfb_site_code（避免跨 Tab 污染主站）
 * 3. 本地二级域名（如 test_1.localhost:5189）
 *
 * 注意：独立域名下的站点编码只来自 sessionStorage，由 initSite() 通过
 * /distribution/site-info?domain= 探测后写入。历史上曾读取 localStorage 缓存，
 * 会让同一浏览器访问主站时串到分站站点码（把主站发布记到分站/反之），因此已移除。
 */
export function getEffectiveSiteCode(): string {
  if (typeof window === 'undefined') return ''
  const envCode = ((import.meta.env.VITE_DISTRIBUTION_SITE_CODE as string) || '').trim()
  if (envCode) return envCode

  const sessionCode = sessionStorage.getItem('hfb_site_code') || ''
  if (sessionCode) return sessionCode

  const hostname = window.location.hostname
  if (hostname && hostname.endsWith('.localhost')) {
    return hostname.replace(/\.localhost$/, '')
  }

  return ''
}

export const useDistributionSiteStore = defineStore('distributionSite', {
  state: () => {
    const code = getEffectiveSiteCode()
    return {
      siteCode: code,
      siteName: sessionStorage.getItem('hfb_site_name') || '大锤商行',
      domain: '',
      isDistribution: Boolean(code),
      displayAccountEnabled: true,
      defaultSupportGroupId: null as number | null,
      logoUrl: '',
      faviconUrl: '',
      banners: [] as DistributionBanner[],
      announcements: [] as string[],
      footerInfo: null as DistributionFooterInfo | null,
      receiveRatioDelta: 0,
      receiveCostDelta: 0,
      initialized: false,
    }
  },

  actions: {
    async initSite() {
      const envCode = ((import.meta.env.VITE_DISTRIBUTION_SITE_CODE as string) || '').trim()
      const hostname = window.location.hostname
      const urlParams = new URLSearchParams(window.location.search)
      const querySite = (
        urlParams.get('site') ||
        urlParams.get('site_code') ||
        urlParams.get('distribution_site_code') ||
        ''
      ).trim()

      // 1. 显式清除或重置为主站
      if (querySite === 'main' || querySite === 'clear' || querySite === '0') {
        this.resetToMainSite()
        this.initialized = true
        return
      }

      // 2. 识别目标分销站点编码
      let targetCode: string
      if (querySite) {
        targetCode = querySite
        sessionStorage.setItem('hfb_site_code', querySite)
      } else if (envCode) {
        targetCode = envCode
        sessionStorage.setItem('hfb_site_code', envCode)
      } else if (hostname && hostname.endsWith('.localhost')) {
        targetCode = hostname.replace(/\.localhost$/, '')
        sessionStorage.setItem('hfb_site_code', targetCode)
      } else {
        targetCode = sessionStorage.getItem('hfb_site_code') || ''
        // 若在普通 localhost 且无 envCode、无 query、无 sessionStorage，则视为纯主站，清理旧的 localStorage 串扰
        if (!targetCode && (hostname === 'localhost' || hostname === '127.0.0.1')) {
          this.resetToMainSite()
          this.initialized = true
          return
        }
      }

      let queryUrl = ''
      if (targetCode) {
        queryUrl = `/distribution/site-info?code=${encodeURIComponent(targetCode)}`
      } else if (hostname && hostname !== 'localhost' && hostname !== '127.0.0.1') {
        queryUrl = `/distribution/site-info?domain=${encodeURIComponent(hostname)}`
      }

      if (!queryUrl) {
        this.resetToMainSite()
        this.initialized = true
        return
      }

      try {
        const { data } = await apiClient.get<ApiResponse<DistributionSiteInfo>>(queryUrl, {
          silent: true,
          skipErrorHandler: true,
        })
        const info = data.data
        if (info && info.site_code && info.status === 'active') {
          this.siteCode = info.site_code
          this.siteName = info.site_name || info.site_code
          this.domain = info.domain || ''
          this.isDistribution = true
          this.displayAccountEnabled = info.display_account_enabled ?? true
          this.defaultSupportGroupId = info.default_support_group_id ?? null
          this.logoUrl = info.logo_url || ''
          this.faviconUrl = info.favicon_url || ''

          if (info.banners_json) {
            try {
              this.banners = JSON.parse(info.banners_json)
            } catch {
              this.banners = []
            }
          } else {
            this.banners = []
          }

          if (info.announcements_json) {
            try {
              this.announcements = JSON.parse(info.announcements_json)
            } catch {
              this.announcements = []
            }
          } else {
            this.announcements = []
          }

          if (info.footer_info_json) {
            try {
              this.footerInfo = JSON.parse(info.footer_info_json)
            } catch {
              this.footerInfo = null
            }
          } else {
            this.footerInfo = null
          }

          this.receiveRatioDelta = Math.max(0, Number(info.receive_ratio_delta || 0))
          this.receiveCostDelta = Math.max(0, Number(info.receive_cost_delta || 0))

          sessionStorage.setItem('hfb_site_code', this.siteCode)
          sessionStorage.setItem('hfb_site_name', this.siteName)

          // 更新页面标题和 Favicon
          document.title = `【${this.siteName}】租号商城 - 精选游戏账号平台`
          if (this.faviconUrl && typeof document !== 'undefined') {
            let link = document.querySelector("link[rel*='icon']") as HTMLLinkElement | null
            if (!link) {
              link = document.createElement('link')
              link.rel = 'icon'
              document.head.appendChild(link)
            }
            link.href = this.faviconUrl
          }
        } else {
          this.resetToMainSite()
        }
      } catch {
        // 若站点编码无效或未找到，自动回退为主站
        this.resetToMainSite()
      } finally {
        this.initialized = true
      }
    },

    resetToMainSite() {
      this.siteCode = ''
      this.siteName = '大锤商行'
      this.domain = ''
      this.isDistribution = false
      this.displayAccountEnabled = true
      this.defaultSupportGroupId = null
      this.logoUrl = ''
      this.faviconUrl = ''
      this.banners = []
      this.announcements = []
      this.footerInfo = null
      this.receiveRatioDelta = 0
      this.receiveCostDelta = 0
      sessionStorage.removeItem('hfb_site_code')
      sessionStorage.removeItem('hfb_site_name')
      localStorage.removeItem('hfb_site_code')
      localStorage.removeItem('hfb_site_name')
      document.title = '大锤商行 - 官方租号平台'
    },
  },
})