import {
  Table, TableHeader, TableBody, TableHead, TableRow, TableCell,
} from '@/components/ui/table';
import { Button } from '@/components/ui/button';
import { cn } from '@/lib/utils';
import { History } from 'lucide-react';

function hasHistoricalVisibility(bill) {
  const visibility = bill.history_visibility;
  return !!bill.has_history_ranges || (visibility && visibility !== 'default');
}

// Accepts row action handlers from BillsPage
export default function BillsTableInner({ bills, onEdit, onToggle, onDelete, onHistory }) {
  return (
    <Table>

      <TableHeader className="bg-muted border-b border-border/70">
        <TableRow className="hover:bg-transparent border-0">
          <TableHead className="px-6 py-3 text-xs uppercase text-muted-foreground">Bill</TableHead>
          <TableHead className="px-6 py-3 text-xs uppercase text-muted-foreground">Category</TableHead>
          <TableHead className="px-6 py-3 text-xs uppercase text-muted-foreground w-24">Due</TableHead>
          <TableHead className="px-6 py-3 text-xs uppercase text-muted-foreground w-28 text-right">Expected</TableHead>
          <TableHead className="px-6 py-3 text-xs uppercase text-muted-foreground w-28">Cycle</TableHead>
          <TableHead className="px-6 py-3 text-xs uppercase text-muted-foreground w-24">Flags</TableHead>
          <TableHead className="px-6 py-3 w-72" />
        </TableRow>
      </TableHeader>

      <TableBody>
        {bills.map((bill) => (
          <TableRow
            key={bill.id}
            className="group border-b border-border/50 last:border-0 hover:bg-accent/60 transition-colors"
          >

            {/* Bill name */}
            <TableCell className="px-6 py-4">
              <div className="flex items-center gap-2">
                <button
                  type="button"
                  className="text-left text-sm font-medium leading-tight text-foreground underline-offset-4 transition-colors hover:text-primary hover:underline focus-visible:outline-none focus-visible:ring-[3px] focus-visible:ring-ring/50 rounded-sm"
                  onClick={() => onEdit?.(bill.id)}
                  title={`Edit ${bill.name}`}
                >
                  {bill.name}
                </button>
                {hasHistoricalVisibility(bill) && (
                  <span
                    className="inline-flex h-5 w-5 items-center justify-center rounded-full border border-sky-500/25 bg-sky-500/10 text-sky-500"
                    title="Historical visibility configured"
                    aria-label="Historical visibility configured"
                  >
                    <History className="h-3 w-3" />
                  </span>
                )}
              </div>
            </TableCell>

            {/* Category */}
            <TableCell className="px-6 py-4">
              {bill.category_name ? (
                <span className="text-xs text-muted-foreground">{bill.category_name}</span>
              ) : (
                <span className="text-muted-foreground/40 text-xs">—</span>
              )}
            </TableCell>

            {/* Due day */}
            <TableCell className="px-6 py-4 w-24">
              <span className="text-sm text-muted-foreground">Day {bill.due_day}</span>
            </TableCell>

            {/* Expected amount */}
            <TableCell className="px-6 py-4 w-28 text-right">
              <span className="font-mono text-sm tabular-nums text-muted-foreground">
                ${Number(bill.expected_amount).toFixed(2)}
              </span>
            </TableCell>

            {/* Billing cycle — field is billing_cycle, not cycle */}
            <TableCell className="px-6 py-4 w-28">
              <span className="text-xs text-muted-foreground capitalize">
                {bill.billing_cycle || 'monthly'}
              </span>
            </TableCell>

            {/* Flags */}
            <TableCell className="px-6 py-4 w-24">
              {(!!bill.autopay_enabled || !!bill.has_2fa) ? (
                <div className="flex items-center gap-1.5">
                  {!!bill.autopay_enabled && (
                    <span className="text-[10px] font-semibold px-1.5 py-0.5 rounded bg-emerald-500/20 text-emerald-400">AP</span>
                  )}
                  {!!bill.has_2fa && (
                    <span className="text-[10px] px-1.5 py-0.5 rounded bg-violet-500/15 text-violet-400">2FA</span>
                  )}
                </div>
              ) : (
                <span className="text-muted-foreground/40 text-xs">—</span>
              )}
            </TableCell>

            {/* Actions — visible on row hover */}
            <TableCell className="px-6 py-4 w-72 text-right">
              <div className="flex items-center justify-end gap-1.5 opacity-0 group-hover:opacity-100 transition-opacity">
                <Button
                  variant="ghost"
                  size="sm"
                  className={cn(
                    'h-7 px-2.5 text-xs',
                    bill.active
                      ? 'text-muted-foreground hover:text-destructive'
                      : 'text-emerald-500 hover:text-emerald-400',
                  )}
                  onClick={() => onToggle?.(bill)}
                >
                  {bill.active ? 'Deactivate' : 'Activate'}
                </Button>
                {!bill.active && (
                  <Button
                    variant="ghost"
                    size="sm"
                    className="h-7 px-2.5 text-xs text-sky-500 hover:text-sky-400 hover:bg-sky-500/10"
                    onClick={() => onHistory?.(bill)}
                  >
                    History
                  </Button>
                )}
                <Button
                  variant="ghost"
                  size="sm"
                  className="h-7 px-2.5 text-xs text-destructive hover:text-destructive hover:bg-destructive/10"
                  onClick={() => onDelete?.(bill)}
                >
                  Delete
                </Button>
              </div>
            </TableCell>

          </TableRow>
        ))}
      </TableBody>

    </Table>
  );
}