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import * as React from "react";
import * as DropdownMenu from "@radix-ui/react-dropdown-menu";
import { Check, ChevronDown, X } from "lucide-react";
import { Badge } from "@/components/ui/badge";
import { Button } from "@/components/ui/button";

interface AgentMultiSelectProps {
  options: string[];
  value: string[];
  onChange: (value: string[]) => void;
  placeholder?: string;
}

export const AgentMultiSelect: React.FC<AgentMultiSelectProps> = ({
  options,
  value,
  onChange,
  placeholder = "Filter by agent",
}) => {
  const toggle = (agent: string) => {
    if (value.includes(agent)) {
      onChange(value.filter((a) => a !== agent));
    } else {
      onChange([...value, agent]);
    }
  };

  return (
    <DropdownMenu.Root>
      <DropdownMenu.Trigger asChild>
        <Button
          variant="outline"
          size="sm"
          className="flex items-center gap-2 bg-background"
        >
          <span className="truncate max-w-[200px] text-sm">
            {value.length === 0 ? placeholder : `${value.length} selected`}
          </span>
          <ChevronDown className="h-4 w-4" />
        </Button>
      </DropdownMenu.Trigger>
      <DropdownMenu.Content
        className="bg-popover border rounded-md shadow-lg p-2 max-h-60 overflow-y-auto"
        align="start"
      >
        {options.map((opt) => {
          const checked = value.includes(opt);
          return (
            <DropdownMenu.Item
              key={opt}
              onSelect={(e) => {
                e.preventDefault();
                toggle(opt);
              }}
              className="flex items-center gap-2 px-2 py-1.5 rounded cursor-pointer hover:bg-muted focus:outline-none"
            >
              <span
                className={`h-4 w-4 border rounded-sm flex items-center justify-center text-primary ${
                  checked ? "bg-primary text-white" : "bg-background"
                }`}
              >
                {checked && <Check className="h-3 w-3" />}
              </span>
              <span className="text-sm truncate">{opt}</span>
            </DropdownMenu.Item>
          );
        })}
      </DropdownMenu.Content>
      {/* Selected chips */}
      {value.length > 0 && (
        <div className="flex flex-wrap gap-1 mt-2">
          {value.map((v) => (
            <Badge
              key={v}
              variant="secondary"
              className="flex items-center gap-1"
            >
              {v}
              <X className="h-3 w-3 cursor-pointer" onClick={() => toggle(v)} />
            </Badge>
          ))}
        </div>
      )}
    </DropdownMenu.Root>
  );
};