import {
  createUploadRequestAction,
  deleteOwnUploadAction,
  extendOwnUploadAction,
  userLogoutAction,
} from '@/src/lib/actions.js';
import { all, runCleanupIfNeeded } from '@/src/lib/db.js';
import { sharedLinkName } from '@/src/lib/files.js';
import { formatBytes, formatCountdown, formatTimestamp, readSearchParam } from '@/src/lib/format.js';
import { ensureCsrfToken, requireAuthenticatedUser } from '@/src/lib/security.js';

import { CopyLinkButton } from '../_components/copy-link-button.js';
import { StatusMessage } from '../_components/status-message.js';
import { UploadProgressForm } from '../_components/upload-progress-form.js';

export const dynamic = 'force-dynamic';

export default async function DashboardPage({ searchParams }) {
  await runCleanupIfNeeded();

  const user = await requireAuthenticatedUser();
  const csrfToken = await ensureCsrfToken();
  const uploads = await all(
    'SELECT id, original_name, stored_name, size_bytes, uploaded_at, expires_at FROM uploads WHERE owner = ? ORDER BY uploaded_at DESC',
    [user.username]
  );
  const uploadRequests = await all(
    `SELECT id, note, created_at, expires_at, completed_at, uploaded_original_name
     FROM upload_requests
     WHERE owner = ?
     ORDER BY created_at DESC
     LIMIT 200`,
    [user.username]
  );

  const resolvedSearchParams = await searchParams;
  const error = readSearchParam(resolvedSearchParams, 'error');
  const success = readSearchParam(resolvedSearchParams, 'success');
  const totalBytes = uploads.reduce((total, item) => total + (Number(item.size_bytes) || 0), 0);
  const nowTs = Date.now();

  return (
    <main className="page-shell">
      <header className="page-header">
        <div className="header-main">
          <h1>Dateiverwaltung</h1>
          <p className="muted">Angemeldet als {user.username}</p>
        </div>

        <div className="toolbar">
          {user.admin ? (
            <a className="chip primary" href="/manage/admin/dashboard">
              Adminbereich
            </a>
          ) : null}

          <form className="inline-form" action={userLogoutAction}>
            <input type="hidden" name="csrfToken" value={csrfToken} />
            <button className="btn secondary" type="submit">
              Abmelden
            </button>
          </form>
        </div>
      </header>

      <StatusMessage error={error} success={success} />

      <div className="dashboard-top-grid">
        <section className="panel panel-spotlight">
          <h2>Neue Datei hochladen</h2>
          <UploadProgressForm csrfToken={csrfToken} />
        </section>

        <aside className="panel panel-soft">
          <h2>Schnellüberblick</h2>
          <div className="info-stack">
            <div className="info-card">
              <strong>{uploads.length}</strong>
              <span className="muted">aktive Uploads</span>
            </div>
            <div className="info-card">
              <strong>{totalBytes > 0 ? formatBytes(totalBytes) : '0 B'}</strong>
              <span className="muted">genutzter Speicher</span>
            </div>
          </div>
        </aside>
      </div>

      <section className="panel">
        <h2>Upload-Anfragen</h2>
        <p className="muted">Benachrichtigung erfolgt an deinen Benutzernamen (E-Mail-Adresse).</p>
        <form className="form-grid" action={createUploadRequestAction}>
          <input type="hidden" name="csrfToken" value={csrfToken} />

          <label className="field">
            Notiz (optional)
            <input className="input" name="note" placeholder="z. B. Bitte die Rechnung als PDF senden" />
          </label>

          <label className="field">
            Gültig in Stunden
            <input className="input" name="expiresHours" placeholder="72" />
          </label>

          <button className="btn" type="submit">
            Anfrage erstellen
          </button>
        </form>

        {uploadRequests.length === 0 ? (
          <p className="muted">Noch keine Upload-Anfragen.</p>
        ) : (
          <div className="table-wrap">
            <table>
              <thead>
                <tr>
                  <th>Anfrage</th>
                  <th>Status</th>
                  <th>Erstellt</th>
                  <th>Gültig bis</th>
                  <th>Ergebnis</th>
                  <th>Aktionen</th>
                </tr>
              </thead>
              <tbody>
                {uploadRequests.map((entry) => {
                  const requestPath = `/_request/${encodeURIComponent(entry.id)}`;
                  const isCompleted = Number(entry.completed_at || 0) > 0;
                  const isExpired = !isCompleted && Number(entry.expires_at || 0) <= nowTs;

                  return (
                    <tr key={entry.id}>
                      <td>
                        <strong>{entry.id}</strong>
                        {entry.note ? <div className="muted">{entry.note}</div> : null}
                      </td>
                      <td>
                        <span
                          className={`badge ${
                            isCompleted ? 'success' : isExpired ? 'danger' : 'primary'
                          }`}
                        >
                          {isCompleted ? 'Abgeschlossen' : isExpired ? 'Abgelaufen' : 'Offen'}
                        </span>
                      </td>
                      <td>{formatTimestamp(entry.created_at)}</td>
                      <td>{formatTimestamp(entry.expires_at)}</td>
                      <td>{entry.uploaded_original_name || '-'}</td>
                      <td>
                        <div className="row-actions">
                          <a className="btn secondary" href={requestPath}>
                            Öffnen
                          </a>
                          <CopyLinkButton path={requestPath} label="Upload-Anfrage" />
                        </div>
                      </td>
                    </tr>
                  );
                })}
              </tbody>
            </table>
          </div>
        )}
      </section>

      <section className="panel">
        <h2>Aktuelle Uploads</h2>
        {uploads.length === 0 ? (
          <p className="muted">Noch keine Uploads.</p>
        ) : (
          <div className="table-wrap">
            <table>
              <thead>
                <tr>
                  <th>Datei</th>
                  <th>Größe</th>
                  <th>Hochgeladen</th>
                  <th>Ablauf</th>
                  <th>Aktionen</th>
                </tr>
              </thead>
              <tbody>
                {uploads.map((item) => {
                  const shareName = sharedLinkName(item.stored_name);
                  const sharePath = `/_share/${encodeURIComponent(shareName)}`;
                  return (
                    <tr key={item.id}>
                      <td>
                        <strong>{item.original_name}</strong>
                        <div className="muted mono">{item.stored_name}</div>
                      </td>
                      <td>{formatBytes(item.size_bytes)}</td>
                      <td>{formatTimestamp(item.uploaded_at)}</td>
                      <td>
                        <div>{formatTimestamp(item.expires_at)}</div>
                        <div className="muted">Noch {formatCountdown(item.expires_at)}</div>
                      </td>
                      <td>
                        <div className="stack-actions">
                          <div className="row-actions">
                            <a className="btn secondary" href={sharePath}>
                              Download
                            </a>
                            <CopyLinkButton path={sharePath} label={item.original_name} />
                          </div>

                          <form className="inline-form action-form-row">
                            <input type="hidden" name="csrfToken" value={csrfToken} />
                            <input type="hidden" name="uploadId" value={item.id} />
                            <input className="input small" name="extendHours" placeholder="Stunden" />
                            <button className="btn" type="submit" formAction={extendOwnUploadAction}>
                              Verlängern
                            </button>
                            <button className="btn danger" type="submit" formAction={deleteOwnUploadAction}>
                              Löschen
                            </button>
                          </form>
                        </div>
                      </td>
                    </tr>
                  );
                })}
              </tbody>
            </table>
          </div>
        )}
      </section>
    </main>
  );
}