import { Loader2, Upload, X } from "lucide-react";
import { useState } from "react";
import { createPortal } from "react-dom";
import { api, errorMessage } from "../api";
import { Alert } from "../components/ui";
import { useI18n } from "../i18n";

// Real Telegram sticker/emoji packs are created with at least one item, so
// this form collects the title/short name plus a single starting file —
// exactly like CreateStickerSet's domain-level requirement. More stickers
// get added afterward from the pack's own preview modal.
export function CreateStickerSetModal({ kind, onClose, onCreated }: { kind: "stickers" | "emoji"; onClose: () => void; onCreated: () => void }) {
  const { t } = useI18n();
  const noun = kind === "emoji" ? "emoji" : "sticker";
  const [title, setTitle] = useState("");
  const [shortName, setShortName] = useState("");
  const [emoji, setEmoji] = useState("");
  const [file, setFile] = useState<File | null>(null);
  const [reason, setReason] = useState("");
  const [busy, setBusy] = useState(false);
  const [error, setError] = useState("");

  async function submit() {
    if (!title.trim() || !shortName.trim() || !emoji.trim() || !file) {
      setError(t("stickers.createFieldsRequired", { noun }));
      return;
    }
    if (!reason.trim()) {
      setError(t("action.reasonRequired"));
      return;
    }
    setBusy(true);
    setError("");
    try {
      const form = new FormData();
      form.set("metadata", JSON.stringify({
        command_id: "", reason: reason.trim(), confirm: true,
        title: title.trim(), short_name: shortName.trim().toLowerCase(), kind, emoji: emoji.trim()
      }));
      form.set("file", file, file.name);
      await api.createStickerSet(form);
      onCreated();
      onClose();
    } catch (err) {
      setError(errorMessage(err));
    } finally {
      setBusy(false);
    }
  }

  return createPortal(
    <div className="modal-backdrop" role="presentation">
      <section className="modal command-modal" role="dialog" aria-modal="true" aria-label={t("stickers.createTitle", { noun })}>
        <div className="modal-head">
          <div>
            <div className="eyebrow">{t("stickers.createEyebrow")}</div>
            <h2>{t("stickers.createTitle", { noun })}</h2>
          </div>
          <button className="icon-btn" type="button" onClick={onClose} disabled={busy} aria-label={t("action.close")}><X size={15} /></button>
        </div>
        <div className="command-body">
          <div className="gift-fields-grid">
            <label><span>{t("stickers.title")}</span><input value={title} maxLength={64} onChange={(event) => setTitle(event.target.value)} /></label>
            <label><span>{t("stickers.shortName")}</span><input value={shortName} maxLength={32} onChange={(event) => setShortName(event.target.value)} placeholder={t("stickers.shortNamePlaceholder")} /></label>
            <label><span>{t("stickers.emoji")}</span><input value={emoji} onChange={(event) => setEmoji(event.target.value)} placeholder={t("stickers.emojiPlaceholder")} /></label>
          </div>
          <label className={`gift-file-picker ${file ? "has-file" : ""}`}>
            <input type="file" accept=".tgs,.json,.webp,application/json,application/x-tgsticker,image/webp" onChange={(event) => setFile(event.target.files?.[0] ?? null)} />
            <span className="gift-file-copy"><span className="gift-field-label">{t("stickers.firstSticker", { noun })}</span><strong>{file ? file.name : t("stickers.filePrompt")}</strong></span>
            <span className="gift-file-action">{file ? t("gifts.changeFile") : t("gifts.chooseFile")}</span>
          </label>
          <label className="gift-reason-field"><span>{t("gifts.reason")}</span><input value={reason} placeholder={t("gifts.reasonPlaceholder")} onChange={(event) => setReason(event.target.value)} /></label>
          {error && <Alert>{error}</Alert>}
        </div>
        <div className="modal-actions">
          <button className="btn" type="button" onClick={onClose} disabled={busy}>{t("common.close")}</button>
          <button className="btn primary" type="button" onClick={submit} disabled={busy}>
            {busy ? <Loader2 className="spin" size={15} /> : <Upload size={15} />}
            {t("stickers.create", { noun })}
          </button>
        </div>
      </section>
    </div>,
    document.body
  );
}