import type { ColumnDef } from "@tanstack/react-table"
import { SearchIcon } from "lucide-react"
import { useCallback, useEffect, useMemo, useRef, useState } from "react"
import { Link } from "react-router-dom"
import { toast } from "sonner"
import { fetchMyAccounts } from "@/api/account"
import DataTable from "@/components/data-table"
import Page from "@/components/page"
import { Button } from "@/components/ui/button"
import { Input } from "@/components/ui/input"
import {
  Select,
  SelectContent,
  SelectItem,
  SelectTrigger,
  SelectValue,
} from "@/components/ui/select"
import { useProducts } from "@/lib/hooks/useProducts"
import {
  EXPIRED_DAY_OPTIONS,
  type MyAccountItem,
  type MyAccountQueryParams,
} from "@/lib/models/account"

type ChannelQuery = {
  expiredDay: string
  productId: string
  packageName: string
  keyword: string
}

const INITIAL_QUERY: ChannelQuery = {
  expiredDay: "-100",
  productId: "0",
  packageName: "0",
  keyword: "",
}

const PAGE_SIZE = 10

function toParams(query: ChannelQuery): MyAccountQueryParams {
  return {
    ExpiredDay: Number(query.expiredDay),
    ProductId: Number(query.productId) || undefined,
    PackageId: query.packageName === "0" ? undefined : query.packageName,
    Keyword: query.keyword.trim() || undefined,
  }
}

const columns: ColumnDef<MyAccountItem>[] = [
  {
    accessorKey: "StartTime",
    header: "开通时间",
  },
  {
    accessorKey: "ProductName",
    header: "产品",
  },
  {
    accessorKey: "PackageName",
    header: "套餐",
  },
  {
    accessorKey: "Account",
    header: "账号",
    cell: ({ row }) => (
      <span className="font-mono text-sm">{row.original.Account}</span>
    ),
  },
  {
    accessorKey: "Pwd",
    header: "密码",
    cell: ({ row }) => (
      <span className="font-mono text-sm">{row.original.Pwd}</span>
    ),
  },
  {
    accessorKey: "ConnectCount",
    header: "连接数",
  },
  {
    accessorKey: "EndTime",
    header: "到期时间",
  },
  {
    accessorKey: "RestTime",
    header: "剩余时间",
    cell: ({ row }) => (
      <span
        className={
          row.original.RestTime === "已过期" ? "text-red-500" : undefined
        }
      >
        {row.original.RestTime}
      </span>
    ),
  },
  {
    accessorKey: "Status",
    header: "状态",
    cell: ({ row }) =>
      row.original.Status === 1 ? (
        <span className="text-emerald-600">正常</span>
      ) : (
        <span className="text-red-500">已退货</span>
      ),
  },
]

export default function ChannelsPage() {
  const products = useProducts()
  const [query, setQuery] = useState<ChannelQuery>(INITIAL_QUERY)

  const [data, setData] = useState<MyAccountItem[]>([])
  const [status, setStatus] = useState<"load" | "done" | "fail">("load")
  const [page, setPage] = useState(1)
  const [selection, setSelection] = useState<Record<string, boolean>>({})

  const selectedProduct = useMemo(
    () =>
      products.find(item => String(item.Product.Id) === query.productId) ??
      null,
    [products, query.productId],
  )

  const load = useCallback(async (params: MyAccountQueryParams) => {
    setStatus("load")
    const res = await fetchMyAccounts(params)
    if (res.success) {
      setData(res.data)
      setStatus("done")
    } else {
      setStatus("fail")
      toast.error(res.message)
    }
    setPage(1)
    setSelection({})
  }, [])

  const loadedRef = useRef(false)
  useEffect(() => {
    if (loadedRef.current) return
    loadedRef.current = true
    load(toParams(INITIAL_QUERY))
  }, [load])

  const applyFilters = (patch: Partial<ChannelQuery>) => {
    const next = { ...query, ...patch }
    setQuery(next)
    load(toParams(next))
  }
  const handleReset = () => {
    setQuery(INITIAL_QUERY)
    load(toParams(INITIAL_QUERY))
  }
  const paged = useMemo(
    () => data.slice((page - 1) * PAGE_SIZE, page * PAGE_SIZE),
    [data, page],
  )

  return (
    <Page>
      <div className="bg-white rounded-lg  flex flex-col">
        <div className="flex flex-col items-center bg-amber-100 p-3 gap-2">
          <p className="text-sm text-gray-600">
            为了给您带来更好的服务体验，请完善qq号和微信号。
            <Link
              to="/admin"
              className="text-blue-600 hover:text-blue-700 underline-offset-2 hover:underline"
            >
              立即完善》
            </Link>
          </p>
        </div>

        <div className="flex flex-wrap items-end p-4 gap-x-4 gap-y-3">
          <div className="flex items-center gap-2">
            <span className="text-sm text-gray-500 whitespace-nowrap">
              过期时间：
            </span>
            <Select
              value={query.expiredDay}
              onValueChange={value => applyFilters({ expiredDay: value })}
            >
              <SelectTrigger className="w-40">
                <SelectValue />
              </SelectTrigger>
              <SelectContent>
                {EXPIRED_DAY_OPTIONS.map(option => (
                  <SelectItem key={option.value} value={String(option.value)}>
                    {option.label}
                  </SelectItem>
                ))}
              </SelectContent>
            </Select>
          </div>

          <Select
            value={query.productId}
            onValueChange={value =>
              applyFilters({ productId: value, packageName: "0" })
            }
          >
            <SelectTrigger className="w-36">
              <SelectValue placeholder="全部产品" />
            </SelectTrigger>
            <SelectContent>
              <SelectItem value="0">全部产品</SelectItem>
              {products.map(item => (
                <SelectItem key={item.Product.Id} value={String(item.Product.Id)}>
                  {item.Product.Name}
                </SelectItem>
              ))}
            </SelectContent>
          </Select>

          <Select
            value={query.packageName}
            onValueChange={value => applyFilters({ packageName: value })}
          >
            <SelectTrigger className="w-36">
              <SelectValue placeholder="全部套餐" />
            </SelectTrigger>
            <SelectContent>
              <SelectItem value="0">全部套餐</SelectItem>
              {selectedProduct?.Packages.filter(pkg => pkg.Status === 1).map(
                pkg => (
                  <SelectItem key={pkg.Id} value={pkg.Name}>
                    {pkg.Name}
                  </SelectItem>
                ),
              )}
            </SelectContent>
          </Select>

          <div className="flex items-center gap-2">
            <Input
              value={query.keyword}
              onChange={e => setQuery({ ...query, keyword: e.target.value })}
              onKeyDown={e => {
                if (e.key === "Enter") applyFilters({})
              }}
              placeholder="账号"
              className="w-40"
            />
            <Button onClick={() => applyFilters({})}>
              <SearchIcon data-icon="inline-start" />
              查询
            </Button>
            <Button variant="outline" onClick={handleReset}>
              重置
            </Button>
          </div>
        </div>

        <div className="flex flex-wrap items-center gap-4 pt-2 p-4">
          <Button
            className="bg-red-600 hover:bg-red-700 text-white"
            onClick={() => toast.info("续费功能开发中，敬请期待")}
          >
            续费
          </Button>
          <Button
            className="bg-blue-600 hover:bg-blue-700 text-white"
            onClick={() => toast.info("退货功能开发中，敬请期待")}
          >
            退货
          </Button>
          <Button
            className="bg-amber-500 hover:bg-amber-600 text-white"
            onClick={() => toast.info("批量修改密码功能开发中，敬请期待")}
          >
            批量修改密码
          </Button>
          <span className="text-sm text-red-500">
            *批量续费可通过筛选和搜索功能精准定位账号
          </span>
        </div>
      </div>

      <div className="bg-white rounded-lg p-4 flex flex-col gap-4">
        <h3 className="font-semibold text-lg">IP账号管理</h3>
        <DataTable
          data={paged}
          status={status}
          columns={columns}
          enableSelection
          rowSelection={selection}
          onSelectionChange={setSelection}
          getRowId={row => String(row.Id)}
          pagination={{
            page,
            size: PAGE_SIZE,
            total: data.length,
            onPageChange: setPage,
          }}
        />
      </div>
    </Page>
  )
}