"use client";

import { useRef, useState } from "react";

type Status = "idle" | "submitting" | "done" | "error";

export default function SubmitPhotos({ eventId }: { eventId: string }) {
  const [open, setOpen] = useState(false);
  const [name, setName] = useState("");
  const [url, setUrl] = useState("");
  const [count, setCount] = useState(0);
  const [status, setStatus] = useState<Status>("idle");
  const [message, setMessage] = useState<string | null>(null);
  const fileRef = useRef<HTMLInputElement>(null);

  async function submit(e: React.FormEvent) {
    e.preventDefault();
    const files = fileRef.current?.files;
    if (!name.trim()) {
      setStatus("error");
      setMessage("Please add your name so we can credit you.");
      return;
    }
    if (!files?.length) {
      setStatus("error");
      setMessage("Select at least one photo.");
      return;
    }

    const body = new FormData();
    body.append("creditName", name.trim());
    if (url.trim()) body.append("creditUrl", url.trim());
    for (const f of Array.from(files)) body.append("files", f);

    setStatus("submitting");
    setMessage(null);
    try {
      const res = await fetch(`/api/events/${eventId}/photos`, { method: "POST", body });
      const data = await res.json();
      if (!res.ok) {
        setStatus("error");
        setMessage(data.error ?? "Something went wrong.");
        return;
      }
      setStatus("done");
      setMessage(`Thanks! ${data.submitted} photo${data.submitted === 1 ? "" : "s"} sent for review.`);
    } catch {
      setStatus("error");
      setMessage("Network error. Please try again.");
    }
  }

  if (status === "done") {
    return (
      <div className="rounded-xl border border-brand-green/40 bg-brand-green/10 p-4 text-sm text-white">
        ✅ {message} Approved photos appear in this gallery.
      </div>
    );
  }

  return (
    <div className="rounded-xl border border-line bg-panel-soft p-4">
      {!open ? (
        <div className="flex flex-wrap items-center justify-between gap-3">
          <div>
            <p className="font-semibold text-white">Were you the photographer?</p>
            <p className="text-sm text-muted">Share your shots — we&rsquo;ll credit you on each photo.</p>
          </div>
          <button
            onClick={() => setOpen(true)}
            className="rounded-full bg-brand-green px-5 py-2.5 text-sm font-semibold text-white hover:bg-brand-green-h"
          >
            Submit your photos
          </button>
        </div>
      ) : (
        <form onSubmit={submit} className="space-y-3">
          <p className="font-semibold text-white">Submit your photos</p>
          <div className="grid gap-3 sm:grid-cols-2">
            <input
              value={name}
              onChange={(e) => setName(e.target.value)}
              placeholder="Your name (for the credit) *"
              className="rounded-lg border border-line bg-bg px-3 py-2 text-sm text-white placeholder:text-muted focus:border-brand-green focus:outline-none"
            />
            <input
              value={url}
              onChange={(e) => setUrl(e.target.value)}
              placeholder="Portfolio or Instagram (optional)"
              className="rounded-lg border border-line bg-bg px-3 py-2 text-sm text-white placeholder:text-muted focus:border-brand-green focus:outline-none"
            />
          </div>
          <input
            ref={fileRef}
            type="file"
            accept="image/jpeg,image/png,image/webp,image/avif"
            multiple
            onChange={(e) => setCount(e.target.files?.length ?? 0)}
            className="block w-full text-sm text-muted file:mr-3 file:rounded-full file:border-0 file:bg-brand-green file:px-4 file:py-2 file:text-sm file:font-semibold file:text-white hover:file:bg-brand-green-h"
          />
          <p className="text-xs text-muted">
            {count > 0 ? `${count} photo${count === 1 ? "" : "s"} selected · ` : ""}
            JPG/PNG/WebP, up to 15 MB each, 30 per submission. Photos are reviewed before going live.
          </p>
          {message && status === "error" && <p className="text-sm text-red-400">{message}</p>}
          <div className="flex items-center gap-3">
            <button
              type="submit"
              disabled={status === "submitting"}
              className="rounded-full bg-brand-green px-5 py-2.5 text-sm font-semibold text-white hover:bg-brand-green-h disabled:opacity-50"
            >
              {status === "submitting" ? "Uploading…" : "Send for review"}
            </button>
            <button
              type="button"
              onClick={() => setOpen(false)}
              className="text-sm font-medium text-muted hover:text-white"
            >
              Cancel
            </button>
          </div>
        </form>
      )}
    </div>
  );
}