// Read-only share link for the open project: status, enable, change its rules (expiry, passcode), revoke, copy.
import { useEffect, useState } from 'react';
import { disableSharing, enableSharing, getShareStatus } from '../syncService.js';

export function useShareLink(projectId) {
  const [shareToken, setShareToken] = useState(null);
  const [expiresAt, setExpiresAt] = useState(null);
  const [hasPasscode, setHasPasscode] = useState(false);
  const [revealAt, setRevealAt] = useState(null);
  const [shareBusy, setShareBusy] = useState(false);
  const [shareCopied, setShareCopied] = useState(false);
  const [shareError, setShareError] = useState('');

  const apply = (data) => { setShareToken(data.shareToken ?? null); setExpiresAt(data.expiresAt ?? null); setHasPasscode(!!data.hasPasscode); setRevealAt(data.revealAt ?? null); };

  useEffect(() => {
    setShareToken(null); setExpiresAt(null); setHasPasscode(false); setRevealAt(null); setShareError('');
    if (!projectId) return undefined;
    let active = true;
    getShareStatus(projectId).then((result) => {
      if (active && result.ok) apply(result.data);
    });
    return () => { active = false; };
  }, [projectId]);

  const shareUrl = shareToken
    ? `${window.location.origin}${window.location.pathname}?share=${shareToken}`
    : '';

  // Turns the link on, or changes its rules: { expiresInDays?: number | null, passcode?: string | null, revealAt?: number | null }
  const enable = async (options = {}) => {
    setShareBusy(true);
    setShareError('');
    const result = await enableSharing(projectId, options);
    setShareBusy(false);
    if (result.ok) apply(result.data); else setShareError(result.error ?? 'Could not save the link settings.');
    return result.ok;
  };

  const revoke = async () => {
    if (!window.confirm('Revoke this share link? Anyone using it will lose access immediately.')) return;
    setShareBusy(true);
    const result = await disableSharing(projectId);
    setShareBusy(false);
    if (result.ok) apply({});
  };

  const copy = () => {
    if (!shareUrl) return;
    navigator.clipboard.writeText(shareUrl).then(() => {
      setShareCopied(true);
      window.setTimeout(() => setShareCopied(false), 2000);
    });
  };

  return { shareToken, shareUrl, expiresAt, hasPasscode, revealAt, shareBusy, shareCopied, shareError, enable, revoke, copy };
}