import type { FC } from "react";
import { observer } from "mobx-react";
import { X } from "lucide-react";
// hooks
import { Tag } from "@plane/ui";
import { useLabel } from "@/hooks/store/use-label";
import { useProjectInbox } from "@/hooks/store/use-project-inbox";

const LabelIcons = ({ color }: { color: string }) => (
  <span className="h-2.5 w-2.5 rounded-full" style={{ backgroundColor: color }} />
);

export const InboxIssueAppliedFiltersLabel: FC = observer(() => {
  // hooks
  const { inboxFilters, handleInboxIssueFilters } = useProjectInbox();
  const { getLabelById } = useLabel();
  // derived values
  const filteredValues = inboxFilters?.labels || [];
  const currentOptionDetail = (labelId: string) => getLabelById(labelId) || undefined;

  const handleFilterValue = (value: string): string[] =>
    filteredValues?.includes(value) ? filteredValues.filter((v) => v !== value) : [...filteredValues, value];

  const clearFilter = () => handleInboxIssueFilters("labels", undefined);

  if (filteredValues.length === 0) return <></>;
  return (
    <Tag>
      <div className="text-xs text-custom-text-200">Label</div>
      {filteredValues.map((value) => {
        const optionDetail = currentOptionDetail(value);
        if (!optionDetail) return <></>;
        return (
          <div key={value} className="relative flex items-center gap-1 rounded bg-custom-background-80 p-1 text-xs">
            <div className="w-3 h-3 flex-shrink-0 relative flex justify-center items-center overflow-hidden">
              <LabelIcons color={optionDetail.color} />
            </div>
            <div className="text-xs truncate">{optionDetail?.name}</div>
            <div
              className="w-3 h-3 flex-shrink-0 relative flex justify-center items-center overflow-hidden cursor-pointer text-custom-text-300 hover:text-custom-text-200 transition-all"
              onClick={() => handleInboxIssueFilters("labels", handleFilterValue(value))}
            >
              <X className={`w-3 h-3`} />
            </div>
          </div>
        );
      })}

      <div
        className="w-3 h-3 flex-shrink-0 relative flex justify-center items-center overflow-hidden cursor-pointer text-custom-text-300 hover:text-custom-text-200 transition-all"
        onClick={clearFilter}
      >
        <X className={`w-3 h-3`} />
      </div>
    </Tag>
  );
});
