'use client';

import { useState } from 'react';
import { Badge } from '@/components/ui/badge';
import { Button } from '@/components/ui/button';
import { Input } from '@/components/ui/input';
import {
  Table,
  TableBody,
  TableCell,
  TableHead,
  TableHeader,
  TableRow,
} from '@/components/ui/table';
import { ChevronDown, ChevronRight, Search } from 'lucide-react';
import { CompanyBackupDetail } from './company-backup-detail';

export interface CompanyBackupRow {
  organizationUid: string;
  companyId: number | null;
  companyName: string;
  organizationName: string;
  protectedWorkloadCount: number;
  backupServerJobCount: number;
  backupAgentJobCount: number;
  failedJobCount: number;
  warningJobCount: number;
  lastJobStatus: string;
  lastSuccessfulBackup: string | null;
  oldestRestorePoint: string | null;
}

interface CompanyBackupTableProps {
  companies: CompanyBackupRow[];
}

function StatusBadge({ status }: { status: string }) {
  const variant = status === 'Success' ? 'default' : status === 'Warning' ? 'secondary' : 'destructive';
  const colors = status === 'Success'
    ? 'bg-green-500/10 text-green-500 hover:bg-green-500/20'
    : status === 'Warning'
    ? 'bg-yellow-500/10 text-yellow-500 hover:bg-yellow-500/20'
    : 'bg-red-500/10 text-red-500 hover:bg-red-500/20';

  return <Badge className={colors}>{status}</Badge>;
}

function timeAgo(dateStr: string | null): string {
  if (!dateStr) return 'Never';
  const diff = Date.now() - new Date(dateStr).getTime();
  const hours = Math.floor(diff / 3600000);
  if (hours < 1) return 'Just now';
  if (hours < 24) return `${hours}h ago`;
  const days = Math.floor(hours / 24);
  return `${days}d ago`;
}

export function CompanyBackupTable({ companies }: CompanyBackupTableProps) {
  const [expandedRow, setExpandedRow] = useState<string | null>(null);
  const [search, setSearch] = useState('');
  const [statusFilter, setStatusFilter] = useState<string>('all');

  const filtered = companies.filter((c) => {
    const matchesSearch = c.companyName.toLowerCase().includes(search.toLowerCase());
    const matchesStatus = statusFilter === 'all' || c.lastJobStatus === statusFilter;
    return matchesSearch && matchesStatus;
  });

  return (
    <div className="space-y-4">
      <div className="flex items-center gap-4">
        <div className="relative flex-1 max-w-sm">
          <Search className="absolute left-3 top-1/2 -translate-y-1/2 h-4 w-4 text-muted-foreground" />
          <Input
            placeholder="Search companies..."
            value={search}
            onChange={(e) => setSearch(e.target.value)}
            className="pl-9"
          />
        </div>
        <div className="flex gap-2">
          {['all', 'Success', 'Warning', 'Failed'].map((s) => (
            <Button
              key={s}
              variant={statusFilter === s ? 'default' : 'outline'}
              size="sm"
              onClick={() => setStatusFilter(s)}
            >
              {s === 'all' ? 'All' : s}
            </Button>
          ))}
        </div>
      </div>

      <div className="rounded-md border">
        <Table>
          <TableHeader>
            <TableRow>
              <TableHead className="w-8"></TableHead>
              <TableHead>Company</TableHead>
              <TableHead className="text-center">Protected</TableHead>
              <TableHead className="text-center">Server Jobs</TableHead>
              <TableHead className="text-center">Agent Jobs</TableHead>
              <TableHead className="text-center">Status</TableHead>
              <TableHead className="text-right">Last Backup</TableHead>
            </TableRow>
          </TableHeader>
          <TableBody>
            {filtered.length === 0 ? (
              <TableRow>
                <TableCell colSpan={7} className="text-center text-muted-foreground py-8">
                  No companies found
                </TableCell>
              </TableRow>
            ) : (
              filtered.map((company) => (
                <>
                  <TableRow
                    key={company.organizationUid}
                    className="cursor-pointer hover:bg-muted/50"
                    onClick={() =>
                      setExpandedRow(
                        expandedRow === company.organizationUid ? null : company.organizationUid
                      )
                    }
                  >
                    <TableCell>
                      {expandedRow === company.organizationUid ? (
                        <ChevronDown className="h-4 w-4" />
                      ) : (
                        <ChevronRight className="h-4 w-4" />
                      )}
                    </TableCell>
                    <TableCell className="font-medium">{company.companyName}</TableCell>
                    <TableCell className="text-center">{company.protectedWorkloadCount}</TableCell>
                    <TableCell className="text-center">{company.backupServerJobCount}</TableCell>
                    <TableCell className="text-center">{company.backupAgentJobCount}</TableCell>
                    <TableCell className="text-center">
                      <StatusBadge status={company.lastJobStatus} />
                    </TableCell>
                    <TableCell className="text-right text-muted-foreground text-sm">
                      {timeAgo(company.lastSuccessfulBackup)}
                    </TableCell>
                  </TableRow>
                  {expandedRow === company.organizationUid && (
                    <TableRow key={`${company.organizationUid}-detail`}>
                      <TableCell colSpan={7} className="bg-muted/30 p-4">
                        <CompanyBackupDetail companyId={company.companyId} companyName={company.companyName} />
                      </TableCell>
                    </TableRow>
                  )}
                </>
              ))
            )}
          </TableBody>
        </Table>
      </div>
    </div>
  );
}