import { clsx, type ClassValue } from "clsx";
import { twMerge } from "tailwind-merge";

export function cn(...inputs: ClassValue[]) {
  return twMerge(clsx(inputs));
}

export function formatDate(date?: string | null): string {
  if (!date) return "—";
  return new Date(date).toLocaleDateString("en-US", {
    year: "numeric",
    month: "short",
    day: "numeric",
  });
}

export function billLabel(billType: string, billNumber: number): string {
  const labels: Record<string, string> = {
    hr: "H.R.",
    s: "S.",
    hjres: "H.J.Res.",
    sjres: "S.J.Res.",
    hconres: "H.Con.Res.",
    sconres: "S.Con.Res.",
    hres: "H.Res.",
    sres: "S.Res.",
  };
  return `${labels[billType?.toLowerCase()] ?? billType?.toUpperCase()} ${billNumber}`;
}

export function partyColor(party?: string): string {
  if (!party) return "text-muted-foreground";
  const p = party.toLowerCase();
  if (p.includes("democrat") || p === "d") return "text-blue-500";
  if (p.includes("republican") || p === "r") return "text-red-500";
  return "text-yellow-500";
}

export function partyBadgeColor(party?: string): string {
  if (!party) return "bg-muted text-muted-foreground";
  const p = party.toLowerCase();
  if (p.includes("democrat") || p === "d") return "bg-blue-100 text-blue-800 dark:bg-blue-900 dark:text-blue-200";
  if (p.includes("republican") || p === "r") return "bg-red-100 text-red-800 dark:bg-red-900 dark:text-red-200";
  return "bg-yellow-100 text-yellow-800 dark:bg-yellow-900 dark:text-yellow-200";
}

export function trendColor(score?: number): string {
  if (!score) return "text-muted-foreground";
  if (score >= 70) return "text-red-500";
  if (score >= 40) return "text-yellow-500";
  return "text-green-500";
}