"use client";

import type { ComponentProps } from "react";
import { ChevronDownIcon } from "lucide-react";
import {
  DropdownMenu,
  DropdownMenuCheckboxItem,
  DropdownMenuContent,
  DropdownMenuTrigger,
} from "@/components/ui/dropdown-menu";
import { cn } from "@/lib/utils";

interface MultiSelectOption {
  value: string;
  label: string;
}

interface MultiSelectProps extends ComponentProps<typeof DropdownMenuTrigger> {
  options: MultiSelectOption[];
  value: string[];
  onValueChange: (value: string[]) => void;
  placeholder?: string;
}

export function MultiSelect({
  options,
  value,
  onValueChange,
  placeholder = "Select…",
  className,
  ...triggerProps
}: MultiSelectProps) {
  function toggle(optionValue: string, checked: boolean) {
    onValueChange(
      checked ? [...value, optionValue] : value.filter((v) => v !== optionValue)
    );
  }

  const selectedLabels = options
    .filter((option) => value.includes(option.value))
    .map((option) => option.label);

  return (
    <DropdownMenu>
      <DropdownMenuTrigger
        className={cn(
          "flex w-full items-center justify-between gap-1.5 rounded-lg border border-input bg-transparent px-2.5 py-2 text-sm outline-none transition-colors focus-visible:border-ring focus-visible:ring-3 focus-visible:ring-ring/50 data-popup-open:border-ring aria-invalid:border-destructive aria-invalid:ring-3 aria-invalid:ring-destructive/20 dark:bg-input/30",
          className
        )}
        {...triggerProps}
      >
        <span
          className={cn(
            "truncate text-left",
            selectedLabels.length === 0 && "text-muted-foreground"
          )}
        >
          {selectedLabels.length > 0 ? selectedLabels.join(", ") : placeholder}
        </span>
        <ChevronDownIcon className="size-4 shrink-0 text-muted-foreground" />
      </DropdownMenuTrigger>

      <DropdownMenuContent align="start" className="min-w-(--anchor-width)">
        {options.map((option) => (
          <DropdownMenuCheckboxItem
            key={option.value}
            checked={value.includes(option.value)}
            onCheckedChange={(checked) => toggle(option.value, checked)}
          >
            {option.label}
          </DropdownMenuCheckboxItem>
        ))}
      </DropdownMenuContent>
    </DropdownMenu>
  );
}