import { useEffect, useState } from 'react';
import { motion } from 'framer-motion';
import { checkHealth, type HealthStatus } from '@/api';
import { ShowcaseFlow } from '@/components/ShowcaseFlow';

function StatusDot({ ok }: { ok: boolean }) {
  return (
    <span
      className={`h-1.5 w-1.5 shrink-0 rounded-full ${ok ? 'bg-emerald-400 shadow-[0_0_8px_rgba(52,211,153,0.6)]' : 'bg-red-400'}`}
      aria-hidden
    />
  );
}

export default function App() {
  const [health, setHealth] = useState<HealthStatus | null>(null);
  const [healthOk, setHealthOk] = useState(false);

  useEffect(() => {
    checkHealth()
      .then((h) => {
        setHealth(h);
        setHealthOk(h.status === 'healthy');
      })
      .catch(() => {
        setHealth(null);
        setHealthOk(false);
      });
  }, []);

  return (
    <div className="studio-page-bg">
      <header className="studio-header">
        <div className="studio-shell py-4 sm:py-5">
          <div className="studio-hero-panel">
            <div className="max-w-2xl space-y-3">
              <span className="studio-kicker">AI launch suite</span>
              <motion.h1
                initial={{ opacity: 0, y: 8 }}
                animate={{ opacity: 1, y: 0 }}
                transition={{ duration: 0.35 }}
                className="font-display text-3xl font-semibold leading-tight tracking-tight text-slate-900 sm:text-4xl"
              >
                Product Showcase Studio
              </motion.h1>
              <p className="max-w-xl text-sm leading-relaxed text-slate-600">
                Transform a product URL into premium ad videos with AI concept ideation, shot planning, keyframe
                guidance, and one-click master cuts.
              </p>
              <div className="flex flex-wrap gap-2">
                <span className="studio-pill">AI planning</span>
                <span className="studio-pill">Concept engine</span>
                <span className="studio-pill">Fast render stack</span>
              </div>
            </div>
            <div className="studio-health-grid">
              {health && (
                <>
                  <span className={`studio-status-chip ${healthOk ? 'studio-status-chip-ok' : 'studio-status-chip-error'}`}>
                    <StatusDot ok={healthOk} />
                    API {healthOk ? 'live' : 'unreachable'}
                  </span>
                  <span className={`studio-status-chip ${health.kie_configured ? '' : 'studio-status-chip-warn'}`}>
                    <StatusDot ok={health.kie_configured} />
                    KIE
                  </span>
                  {health.replicate_configured && (
                    <span className="studio-status-chip">
                      <StatusDot ok={true} />
                      Replicate
                    </span>
                  )}
                  <span className={`studio-status-chip ${health.openai_configured ? '' : 'studio-status-chip-muted'}`}>
                    <StatusDot ok={health.openai_configured} />
                    OpenAI
                  </span>
                  {health.ffmpeg_available === false && (
                    <span className="studio-status-chip studio-status-chip-warn">
                      FFmpeg missing
                    </span>
                  )}
                </>
              )}
            </div>
          </div>
        </div>
      </header>
      <main className="studio-shell py-8 sm:py-12">
        <ShowcaseFlow health={health} />
      </main>
      <footer className="border-t border-slate-200/80 py-7 text-center text-[0.72rem] text-slate-500">
        Product Showcase Studio — local pipeline
      </footer>
    </div>
  );
}