'use client';

import { useState } from 'react';
import { Copy, Check, Trash2 } from 'lucide-react';
import {
  Table,
  TableBody,
  TableCell,
  TableHead,
  TableHeader,
  TableRow,
} from '@/components/ui/table';
import { Button } from '@/components/ui/button';
import { Badge } from '@/components/ui/badge';
import {
  Tooltip,
  TooltipContent,
  TooltipTrigger,
} from '@/components/ui/tooltip';
import type { ApiKey } from './types';

interface ApiKeyTableProps {
  keys: ApiKey[];
  onRevoke: (key: ApiKey) => void;
  isRevoking: boolean;
}

function formatDate(dateString: string | null): string {
  if (!dateString) return 'Never';
  const date = new Date(dateString);
  const now = new Date();
  const diffMs = now.getTime() - date.getTime();
  const diffMins = Math.floor(diffMs / 60000);
  const diffHours = Math.floor(diffMs / 3600000);
  const diffDays = Math.floor(diffMs / 86400000);

  if (diffMins < 1) return 'Just now';
  if (diffMins < 60) return `${diffMins} min ago`;
  if (diffHours < 24) return `${diffHours} hour${diffHours > 1 ? 's' : ''} ago`;
  if (diffDays < 7) return `${diffDays} day${diffDays > 1 ? 's' : ''} ago`;
  return date.toLocaleDateString('en-US', { month: 'short', day: 'numeric', year: 'numeric' });
}

export function ApiKeyTable({ keys, onRevoke, isRevoking }: ApiKeyTableProps) {
  const [copiedId, setCopiedId] = useState<string | null>(null);

  const copyPrefix = (keyId: string, prefix: string) => {
    navigator.clipboard.writeText(prefix);
    setCopiedId(keyId);
    setTimeout(() => setCopiedId(null), 2000);
  };

  if (keys.length === 0) {
    return (
      <div className="rounded-lg border border-border p-8 text-center">
        <p className="text-muted-foreground">No API keys yet. Generate your first key to get started.</p>
      </div>
    );
  }

  return (
    <div className="rounded-lg border border-border">
      <Table>
        <TableHeader>
          <TableRow className="hover:bg-transparent">
            <TableHead className="text-xs font-medium uppercase tracking-wider text-muted-foreground">
              Name
            </TableHead>
            <TableHead className="text-xs font-medium uppercase tracking-wider text-muted-foreground">
              Key
            </TableHead>
            <TableHead className="hidden text-xs font-medium uppercase tracking-wider text-muted-foreground md:table-cell">
              Created
            </TableHead>
            <TableHead className="hidden text-xs font-medium uppercase tracking-wider text-muted-foreground lg:table-cell">
              Last Used
            </TableHead>
            <TableHead className="hidden text-xs font-medium uppercase tracking-wider text-muted-foreground lg:table-cell">
              Uses
            </TableHead>
            <TableHead className="text-right text-xs font-medium uppercase tracking-wider text-muted-foreground">
              Actions
            </TableHead>
          </TableRow>
        </TableHeader>
        <TableBody>
          {keys.map((key) => (
            <TableRow key={key.id}>
              <TableCell className="font-medium">
                {key.name}
              </TableCell>
              <TableCell>
                <code className="rounded bg-muted px-1.5 py-0.5 font-mono text-xs">
                  {key.key_prefix}...
                </code>
              </TableCell>
              <TableCell className="hidden text-muted-foreground md:table-cell">
                {formatDate(key.created_at)}
              </TableCell>
              <TableCell className="hidden text-muted-foreground lg:table-cell">
                {formatDate(key.last_used_at)}
              </TableCell>
              <TableCell className="hidden lg:table-cell">
                <Badge variant="secondary" className="text-xs">
                  {key.usage_count}
                </Badge>
              </TableCell>
              <TableCell>
                <div className="flex items-center justify-end gap-1">
                  <Tooltip>
                    <TooltipTrigger asChild>
                      <Button
                        variant="ghost"
                        size="icon-sm"
                        onClick={() => copyPrefix(key.id, key.key_prefix)}
                        aria-label="Copy key prefix"
                      >
                        {copiedId === key.id ? (
                          <Check className="size-3.5 text-accent" />
                        ) : (
                          <Copy className="size-3.5 text-muted-foreground" />
                        )}
                      </Button>
                    </TooltipTrigger>
                    <TooltipContent>
                      {copiedId === key.id ? 'Copied!' : 'Copy prefix'}
                    </TooltipContent>
                  </Tooltip>

                  <Tooltip>
                    <TooltipTrigger asChild>
                      <Button
                        variant="ghost"
                        size="icon-sm"
                        onClick={() => onRevoke(key)}
                        disabled={isRevoking}
                        aria-label="Revoke key"
                      >
                        <Trash2 className="size-3.5 text-muted-foreground hover:text-destructive" />
                      </Button>
                    </TooltipTrigger>
                    <TooltipContent>Revoke</TooltipContent>
                  </Tooltip>
                </div>
              </TableCell>
            </TableRow>
          ))}
        </TableBody>
      </Table>
    </div>
  );
}