"use client";

import { useActionState } from "react";
import { Sparkles } from "lucide-react";
import { generateDashboardAnalysisAction } from "@/app/ai/actions";
import { formatDate } from "@/lib/format";
import type { AiAnalysis } from "@/lib/models/analysis";

type Props = {
  analysis: AiAnalysis | null;
};

export function DashboardAnalysisCard({ analysis }: Props) {
  const [state, formAction, pending] = useActionState(generateDashboardAnalysisAction, null);

  return (
    <section className="flex flex-col gap-3 rounded-lg border border-muted/40 bg-surface p-4">
      <div className="flex items-center justify-between">
        <h2 className="flex items-center gap-1.5 text-lg font-semibold text-fg">
          <Sparkles size={18} className="text-accent" />
          Kondycja treningowa
        </h2>
        <form action={formAction}>
          <button
            type="submit"
            disabled={pending}
            className="rounded-md bg-accent px-3 py-1.5 text-sm font-semibold text-fg transition-opacity hover:opacity-90 disabled:opacity-50"
          >
            {pending ? "Analizuję..." : analysis ? "Odśwież analizę" : "Generuj analizę"}
          </button>
        </form>
      </div>

      {state && "error" in state ? <p className="text-sm text-accent">{state.error}</p> : null}

      {analysis ? (
        <div className="flex flex-col gap-2">
          <p className="text-sm text-fg/90">{analysis.summary}</p>
          {analysis.tips.length > 0 ? (
            <ul className="list-disc pl-5 text-sm text-fg/80">
              {analysis.tips.map((tip, index) => (
                <li key={index}>{tip}</li>
              ))}
            </ul>
          ) : null}
          <p className="text-xs text-fg/40">
            {formatDate(analysis.createdAt)} · {analysis.model}
          </p>
        </div>
      ) : (
        <p className="text-sm text-fg/60">
          Wygeneruj kompleksową analizę kondycji łączącą dane biegowe, siłowe, HRV i sen.
        </p>
      )}
    </section>
  );
}