import type { ClientView } from "@/lib/client-view";

type Phase = ClientView["phases"][number];

const statusWord: Record<"upcoming" | "active" | "done", string> = {
  done: "Completata",
  active: "In corso",
  upcoming: "Da iniziare",
};

const statusWordClass: Record<"upcoming" | "active" | "done", string> = {
  done: "text-emerald-600 dark:text-emerald-400",
  active: "text-amber-600 dark:text-amber-400",
  upcoming: "text-muted-foreground",
};

/**
 * Horizontal milestone stepper — replica del "STEP PROGRESS TIMELINE" del mock.
 * Un nodo per fase reale (non 5 fissi); la linea di fondo si riempie in base a
 * global_progress_pct.
 */
export function MilestoneStepper({
  phases,
  globalProgress,
}: {
  phases: Phase[];
  globalProgress: number;
}) {
  if (phases.length === 0) return null;

  return (
    <div className="bg-card border-b border-border-light py-8 px-6">
      <div className="relative mx-auto max-w-[1200px]">
        {/* Linea di connessione + riempimento dinamico */}
        <div className="absolute left-[5%] right-[5%] top-[15px] z-0 h-1 rounded-full bg-muted">
          <div
            className="h-full rounded-full bg-primary transition-[width] duration-500 ease-[cubic-bezier(0.4,0,0.2,1)]"
            style={{ width: `${globalProgress}%` }}
          />
        </div>

        {/* Nodi milestone */}
        <div
          className="relative z-10 grid gap-4"
          style={{ gridTemplateColumns: `repeat(${phases.length}, minmax(0, 1fr))` }}
        >
          {phases.map((phase, i) => {
            const s = phase.status;
            return (
              <div key={phase.id} className="flex flex-col items-center text-center">
                <div
                  className={
                    "flex h-8 w-8 items-center justify-center rounded-full border-4 border-card text-xs font-bold shadow-md transition-all " +
                    (s === "done"
                      ? "bg-primary text-primary-foreground"
                      : s === "active"
                        ? "border-primary bg-card text-primary"
                        : "bg-muted text-muted-foreground")
                  }
                >
                  {s === "done" ? "✓" : i + 1}
                </div>
                <span
                  className={
                    "mt-2 text-[11px] font-bold " +
                    (s === "upcoming" ? "text-muted-foreground" : "text-foreground")
                  }
                >
                  Step {i + 1}
                </span>
                <span className="text-[10px] font-medium text-muted-foreground line-clamp-1">
                  {phase.title}
                </span>
                <span className={`mt-1 text-[9px] font-bold uppercase ${statusWordClass[s]}`}>
                  {statusWord[s]}
                </span>
              </div>
            );
          })}
        </div>
      </div>
    </div>
  );
}