---
import Admin from '../../layouts/Admin.astro';
import { getDb } from '../../lib/db';
import { listUsers } from '../../lib/auth';
export const prerender = false;
const users = listUsers(getDb());
const me = Astro.locals.user!;
---
<Admin title="Utenti">
  <h1>Utenti</h1>

  <p><a class="abtn" href="/admin/users/new">+ Nuovo utente</a></p>

  <!-- Pannello password: si apre dall'icona a chiave della riga. Permette di scegliere una
       password o di farla generare; il risultato si vede una volta sola, perché nel database
       finisce solo il suo hash. -->
  <div class="apw" id="pwbox" hidden>
    <p class="apw__label">Password di <strong id="pwbox-user"></strong></p>

    <div id="pwbox-form">
      <div class="apw__row">
        <input class="afield apw__input" type="text" id="pwbox-input" placeholder="Scrivi una password (min 8)" autocomplete="off" />
        <button class="abtn" type="button" id="pwbox-set">Imposta</button>
        <button class="abtn abtn--ghost" type="button" id="pwbox-gen">Genera casuale</button>
        <button class="abtn abtn--ghost" type="button" id="pwbox-close">Annulla</button>
      </div>
      <p class="apw__hint">La password attuale smetterà di funzionare.</p>
      <p class="form-msg" id="pwbox-msg" hidden></p>
    </div>

    <div id="pwbox-result" hidden>
      <div class="apw__row">
        <code id="pwbox-value"></code>
        <button class="abtn" type="button" id="pwbox-copy">Copia</button>
        <button class="abtn abtn--ghost" type="button" id="pwbox-done">Chiudi</button>
      </div>
      <p class="apw__hint">Consegnala ora: chiuso questo riquadro non è più recuperabile.</p>
    </div>
  </div>
  <table>
    <thead><tr><th>Utente</th><th>Ruolo</th><th class="uactions">Azioni</th></tr></thead>
    <tbody>
      {users.map((u) => (
        <tr data-id={u.id}>
          <td>{u.username}{u.id === me.id && ' (tu)'}</td>
          <td>
            <select class="role-sel arole" data-id={u.id} data-role={u.role} aria-label={`Ruolo di ${u.username}`}>
              {['user', 'superuser', 'piattaforme', 'admin'].map((r) => <option value={r} selected={u.role === r}>{r}</option>)}
            </select>
          </td>
          <td class="uactions">
            <button class="aicon" data-reset={u.id} title="Genera una nuova password" aria-label={`Genera una nuova password per ${u.username}`}>
              <svg viewBox="0 0 24 24" aria-hidden="true"><path d="M14 7a4 4 0 1 1-3.9 5H7v2H5v2H2v-3l5.1-5.1A4 4 0 0 1 14 7Z"/><circle cx="15.5" cy="9.5" r="1.2" fill="#fff"/></svg>
            </button>
            {u.id !== me.id && (
              <button class="aicon aicon--danger" data-del={u.id} title="Elimina utente" aria-label={`Elimina ${u.username}`}>
                <svg viewBox="0 0 24 24" aria-hidden="true"><path d="M9 3h6l1 2h4v2H4V5h4l1-2Zm-3 6h12l-1 11a2 2 0 0 1-2 2H9a2 2 0 0 1-2-2L6 9Z"/></svg>
              </button>
            )}
          </td>
        </tr>
      ))}
    </tbody>
  </table>
  <p class="form-msg" id="row-msg"></p>
</Admin>

<script>
  const rowMsg = document.getElementById('row-msg')!;
  const show = (el: HTMLElement, text: string, ok = false) => {
    el.textContent = text;
    el.className = 'form-msg ' + (ok ? 'form-msg--ok' : 'form-msg--err');
  };

  document.querySelectorAll<HTMLSelectElement>('.role-sel').forEach((sel) =>
    sel.addEventListener('change', async () => {
      const res = await fetch(`/api/admin/users/${sel.dataset.id}/role`, {
        method: 'PUT', headers: { 'Content-Type': 'application/json' }, body: JSON.stringify({ role: sel.value }),
      });
      if (res.ok) { sel.dataset.role = sel.value; show(rowMsg, 'Ruolo aggiornato', true); }
      else { show(rowMsg, (await res.json()).error ?? 'Errore'); location.reload(); }
    }));

  const pwbox = document.getElementById('pwbox')!;
  const pwUser = document.getElementById('pwbox-user')!;
  const pwValue = document.getElementById('pwbox-value')!;
  const pwForm = document.getElementById('pwbox-form')!;
  const pwResult = document.getElementById('pwbox-result')!;
  const pwInput = document.getElementById('pwbox-input') as HTMLInputElement;
  const pwMsg = document.getElementById('pwbox-msg')!;
  const pwCopy = document.getElementById('pwbox-copy') as HTMLButtonElement;
  let idCorrente = '';

  const chiudi = () => { pwbox.hidden = true; };
  document.getElementById('pwbox-close')!.addEventListener('click', chiudi);
  document.getElementById('pwbox-done')!.addEventListener('click', chiudi);

  /** Manda la nuova password: senza corpo il server ne genera una a caso. */
  async function cambiaPassword(password?: string): Promise<void> {
    const res = await fetch(`/api/admin/users/${idCorrente}/reset-password`, {
      method: 'POST',
      ...(password
        ? { headers: { 'Content-Type': 'application/json' }, body: JSON.stringify({ password }) }
        : {}),
    });
    if (!res.ok) {
      pwMsg.hidden = false;
      pwMsg.className = 'form-msg form-msg--err';
      pwMsg.textContent = (await res.json()).error ?? 'Operazione non riuscita.';
      return;
    }
    const dati = await res.json();
    pwValue.textContent = dati.password;
    pwForm.hidden = true;
    pwResult.hidden = false;
  }

  document.getElementById('pwbox-set')!.addEventListener('click', () => {
    const scelta = pwInput.value.trim();
    if (scelta.length < 8) {
      pwMsg.hidden = false;
      pwMsg.className = 'form-msg form-msg--err';
      pwMsg.textContent = 'Password troppo corta (min 8).';
      return;
    }
    cambiaPassword(scelta);
  });

  document.getElementById('pwbox-gen')!.addEventListener('click', () => cambiaPassword());

  pwCopy.addEventListener('click', async () => {
    try {
      await navigator.clipboard.writeText(pwValue.textContent ?? '');
      pwCopy.textContent = 'Copiata';
      setTimeout(() => { pwCopy.textContent = 'Copia'; }, 1500);
    } catch {
      // Senza permesso sugli appunti resta la selezione manuale: evidenziamo il testo.
      const range = document.createRange();
      range.selectNodeContents(pwValue);
      getSelection()?.removeAllRanges();
      getSelection()?.addRange(range);
    }
  });

  document.querySelectorAll<HTMLButtonElement>('[data-reset]').forEach((b) =>
    b.addEventListener('click', () => {
      idCorrente = b.dataset.reset!;
      pwUser.textContent = (b.closest('tr')!.querySelector('td')!.textContent ?? '').replace(' (tu)', '');
      pwInput.value = '';
      pwMsg.hidden = true;
      pwResult.hidden = true;
      pwForm.hidden = false;
      pwbox.hidden = false;
      pwbox.scrollIntoView({ block: 'nearest' });
      pwInput.focus();
    }));

  document.querySelectorAll<HTMLButtonElement>('[data-del]').forEach((b) =>
    b.addEventListener('click', async () => {
      if (!confirm('Eliminare definitivamente questo utente?')) return;
      const res = await fetch(`/api/admin/users/${b.dataset.del}`, { method: 'DELETE' });
      if (res.ok) location.reload();
      else show(rowMsg, (await res.json()).error ?? 'Errore');
    }));
</script>