"use client"

import { AppSidebar } from "@/components/app-sidebar"
import { SiteHeader } from "@/components/site-header"
import { SidebarInset, SidebarProvider } from "@/components/ui/sidebar"
import { useEffect, useState } from "react"
import { useTranslation } from "react-i18next"
import { Button } from "@/components/ui/button"
import {  IconSearch } from "@tabler/icons-react"
import { Input } from "@/components/ui/input"
import { DataTableContracts } from "@/components/data-table-contracts"
import { ColumnDef, VisibilityState } from "@tanstack/react-table"
import { Badge } from "@/components/ui/badge"
import { IconCircleCheckFilled, IconLoader, IconCircleMinus, IconEye } from "@tabler/icons-react"
import { EFacturaSimpleCards } from "@/components/efactura-simple-cards"
import Link from "next/link"
import {
  DropdownMenu,
  DropdownMenuCheckboxItem,
  DropdownMenuContent,
  DropdownMenuTrigger,
} from "@/components/ui/dropdown-menu"
import { Combobox } from "@/components/combobox"

interface Contract {
  id: number;
  contractNumber: string;
  contractDate: string;
  brokerageCompany: string;
  status: string;
  basicInfo: {
    sellerCompany: string;
    buyerCompany: string;
    goodsCode: string;
    goods: string;
    cropYear: string;
    origin: string;
  };
  productInfo: {
    quantity: number;
  };
  financialInfo: {
    pricePerMt: number;
    priceCurrency: string;
  };
}

export default function ClosedContractsPage() {
  const [contracts, setContracts] = useState<Contract[]>([])
  const [columnVisibility, setColumnVisibility] = useState<VisibilityState>({})
  const [search, setSearch] = useState("")
  const [selectedCompany, setSelectedCompany] = useState<string>("all")
  const { t } = useTranslation()

  useEffect(() => {
    fetch("/contracts/api/contractsdata")
      .then(res => res.json())
      .then(data => {
        // Filter only closed contracts
        const closedContracts = data.filter((contract: Contract) => 
          contract.status.toLowerCase() === "closed"
        )
        setContracts(closedContracts)
      })
  }, [])

  // Get unique companies for filters
  const companies = [...new Set(contracts.map(c => c.brokerageCompany))]

  // Filter contracts based on search and filters
  const filteredContracts = contracts.filter(contract => {
    const matchesSearch = 
      contract.contractNumber.toLowerCase().includes(search.toLowerCase()) ||
      contract.brokerageCompany.toLowerCase().includes(search.toLowerCase())
    
    const matchesCompany = selectedCompany === "all" || contract.brokerageCompany === selectedCompany

    return matchesSearch && matchesCompany
  })

  // Convert contracts to card format
  const cardData = filteredContracts.map(contract => ({
    id: contract.id,
    title: contract.contractNumber,
    company: contract.brokerageCompany,
    contract: contract.basicInfo.goods,
    date: new Date(contract.contractDate).toLocaleDateString(),
    status: contract.status,
    amount: contract.productInfo.quantity,
    currency: contract.financialInfo.priceCurrency,
  }))

  // Convert companies to the format expected by Combobox
  const companyOptions = [
    { value: "all", label: "All Companies" },
    ...companies.map(company => ({ value: company, label: company }))
  ]

  const columns: ColumnDef<Contract>[] = [
    {
      accessorKey: "contractNumber",
      header: t("contractlist.contractnumber"),
    },
    {
      accessorKey: "brokerageCompany",
      header: t("contractlist.company"),
    },
    {
      accessorKey: "status",
      header: t("contractlist.status"),
      cell: ({ row }) => (
        <Badge variant="outline" className="text-muted-foreground px-1.5">
          {row.original.status.toLowerCase() === "closed" ? (
            <IconCircleCheckFilled className="fill-green-500 dark:fill-green-400 mr-2" />
          ) : row.original.status.toLowerCase() === "pending" ? (
            <IconLoader className="mr-2" />
          ) : (
            <IconCircleMinus className="fill-gray-950 dark:fill-gray-950 mr-2" />
          )}
          {row.original.status}
        </Badge>
      ),
    },
    {
      accessorKey: "basicInfo.goods",
      header: t("contractlist.goods"),
    },
    {
      accessorKey: "productInfo.quantity",
      header: t("contractlist.quantity"),
    },
    {
      accessorKey: "financialInfo.pricePerMt",
      header: t("contractlist.price"),
      cell: ({ row }) => `${row.original.financialInfo.pricePerMt} ${row.original.financialInfo.priceCurrency}`,
    },
    {
      id: "actions",
      header: t("contractlist.action"),
      cell: ({ row }) => (
        <div className="flex">
          <Link href={`/financial-operations/closed-contracts/new?contractNumber=${row.original.contractNumber}&sellerCompany=${row.original.basicInfo.sellerCompany}&buyerCompany=${row.original.basicInfo.buyerCompany}&grain=${row.original.basicInfo.goods}&quantity=${row.original.productInfo.quantity}&pricePerMt=${row.original.financialInfo.pricePerMt}&priceCurrency=${row.original.financialInfo.priceCurrency}`}>
            <Button size="sm" variant="outline"><IconEye className="h-4 w-4" />{t("invoicingclosedcontracts.generate")}</Button>
          </Link>
        </div>
      ),
    },
  ]

  return (
    <SidebarProvider
      style={{
        "--sidebar-width": "calc(var(--spacing) * 72)",
        "--header-height": "calc(var(--spacing) * 12)",
      } as React.CSSProperties}
    >
      <AppSidebar variant="inset" />
      <SidebarInset>
        <SiteHeader title={t("invoicingclosedcontracts.title")} />
        <div className="flex flex-1 flex-col">
          <div className="@container/main flex flex-1 flex-col gap-2">
            <div className="flex flex-col gap-4 py-4 md:gap-6 md:py-6">
              <div className="flex justify-between items-center px-4 lg:px-6">
                <h2 className="text-2xl font-bold">{t("invoicingclosedcontracts.title")}</h2>
              </div>
              <div className="px-4 lg:px-6 flex gap-4 items-center">
                <div className="flex-1 relative">
                  <IconSearch className="absolute left-2 top-2.5 h-4 w-4 text-muted-foreground" />
                  <Input
                    placeholder="Search contracts..."
                    value={search}
                    onChange={(e) => setSearch(e.target.value)}
                    className="pl-8"
                  />
                </div>
                <DropdownMenu>
                    <DropdownMenuTrigger asChild>
                      <Button variant="outline">
                        Columns
                      </Button>
                    </DropdownMenuTrigger>
                    <DropdownMenuContent align="end" className="w-[150px]">
                      {columns.map((column) => {
                        const columnId = typeof column.id === 'string' ? column.id : 
                          'accessorKey' in column ? column.accessorKey as string : null;
                        if (!columnId) return null;
                        return (
                          <DropdownMenuCheckboxItem
                            key={columnId}
                            checked={columnVisibility[columnId]}
                            onCheckedChange={(value) =>
                              setColumnVisibility((prev) => ({
                                ...prev,
                                [columnId]: value,
                              }))
                            }
                          >
                            {column.header?.toString()}
                          </DropdownMenuCheckboxItem>
                        );
                      })}
                    </DropdownMenuContent>
                  </DropdownMenu>
                <Combobox
                  items={companyOptions}
                  value={selectedCompany}
                  onValueChange={setSelectedCompany}
                  placeholder="Select company"
                  emptyText="No companies found"
                />
              </div>
              <div className="hidden lg:block px-4 lg:px-6">
                <DataTableContracts 
                  data={filteredContracts} 
                  columns={columns}
                  columnVisibility={columnVisibility}
                  onColumnVisibilityChange={setColumnVisibility}
                />
              </div>
              <div className="block lg:hidden mt-8">
                <EFacturaSimpleCards 
                  invoices={cardData}
                  onView={(id) => window.location.href = `/contracts/bizz/${id}`}
                />
              </div>
            </div>
          </div>
        </div>
      </SidebarInset>
    </SidebarProvider>
  )
}