'use client';

import * as React from 'react';
import { CheckIcon, ChevronsUpDownIcon } from 'lucide-react';

import { cn } from '@/lib/utils';
import { Button } from '@/components/ui/button';
import {
  Command,
  CommandEmpty,
  CommandGroup,
  CommandInput,
  CommandItem,
  CommandList,
} from '@/components/ui/command';
import { Popover, PopoverContent, PopoverTrigger } from '@/components/ui/popover';

export interface ComboboxOption {
  value: string;
  label: string;
}

interface ComboboxProps {
  options: ComboboxOption[];
  value?: string;
  onChange: (value: string) => void;
  placeholder?: string;
  searchPlaceholder?: string;
  emptyText?: string;
  disabled?: boolean;
  loading?: boolean;
  className?: string;
  id?: string;
  'aria-invalid'?: boolean;
  'aria-describedby'?: string;
}

/**
 * `Select` com busca, usado nas listas longas do sistema (cliente,
 * produto/serviço) — seção 7 do schema de frontend. Composição de
 * Command + Popover, não do `Select` nativo do Radix.
 */
function Combobox({
  options,
  value,
  onChange,
  placeholder = 'Selecionar…',
  searchPlaceholder = 'Buscar…',
  emptyText = 'Nenhum resultado encontrado.',
  disabled,
  loading,
  className,
  id,
  ...aria
}: ComboboxProps) {
  const [open, setOpen] = React.useState(false);
  const selected = options.find((option) => option.value === value);

  return (
    <Popover open={open} onOpenChange={setOpen}>
      <PopoverTrigger asChild>
        <Button
          id={id}
          variant="outline"
          role="combobox"
          aria-expanded={open}
          disabled={disabled || loading}
          loading={loading}
          className={cn(
            'w-full justify-between font-normal',
            !selected && 'text-muted-foreground',
            className,
          )}
          {...aria}
        >
          {selected ? selected.label : placeholder}
          <ChevronsUpDownIcon className="opacity-50" />
        </Button>
      </PopoverTrigger>
      <PopoverContent className="w-(--radix-popover-trigger-width) p-0" align="start">
        <Command>
          <CommandInput placeholder={searchPlaceholder} />
          <CommandList>
            <CommandEmpty>{emptyText}</CommandEmpty>
            <CommandGroup>
              {options.map((option) => (
                <CommandItem
                  key={option.value}
                  value={option.label}
                  onSelect={() => {
                    onChange(option.value);
                    setOpen(false);
                  }}
                >
                  <CheckIcon
                    className={cn('mr-2', option.value === value ? 'opacity-100' : 'opacity-0')}
                  />
                  {option.label}
                </CommandItem>
              ))}
            </CommandGroup>
          </CommandList>
        </Command>
      </PopoverContent>
    </Popover>
  );
}

export { Combobox };