nexus/modules/fx-rates/pages/index.php

<?php
declare(strict_types=1);

require_once dirname(__DIR__) . '/bootstrap.php';

$assets = app()->assets();
if ($assets) {
    $assets->addStyle('/module/fx-rates/asset?file=fx-rates.css');
    $assets->addScript('/module/fx-rates/asset?file=fx-rates.js', 'footer', true);
}

$settings = module_fn('fx-rates', 'settings');
$service = module_fn('fx-rates', 'service');
$preferredCurrencies = is_array($settings['preferred_currencies'] ?? null) ? $settings['preferred_currencies'] : [];
$apiDescribeUrl = APP_API_BASE . '/fx-rates/v1/endpoints';
$notice = trim((string) ($_GET['notice'] ?? ''));
$error = trim((string) ($_GET['error'] ?? ''));

if ((string) ($_GET['refresh'] ?? '') === '1') {
    try {
        $force = !empty($_GET['force']);
        if ($force) {
            $result = $service->refreshLatestRates(null, (string) ($settings['default_base_currency'] ?? ''), 'manual');
        } else {
            $result = $service->autoRefreshLatestRates(
                (string) ($settings['default_base_currency'] ?? ''),
                null,
                (int) ($settings['refresh_max_age_minutes'] ?? 60),
                'manual'
            );
        }

        $params = !empty($result['reused'])
            ? [
                'notice' => sprintf(
                    'Kein neuer API-Abruf. Der letzte gespeicherte Snapshot ist juenger als %d Minuten. Fuer einen erzwungenen Abruf bitte bestaetigen.',
                    (int) ($settings['refresh_max_age_minutes'] ?? 60)
                ),
            ]
            : [
                'notice' => sprintf(
                    'Aktuelle Kurse gespeichert. %d Werte aktualisiert.',
                    (int) ($result['updated_count'] ?? 0)
                ),
            ];
    } catch (\Throwable $exception) {
        $params = ['error' => $exception->getMessage() !== '' ? $exception->getMessage() : 'Kurse konnten nicht aktualisiert werden.'];
    }

    redirect('/module/fx-rates?' . http_build_query($params));
}

$latest = $service->latestStatus();
$recentFetches = $service->recentFetches(15);
$pageData = json_encode([
    'settings' => $settings,
    'latest' => $latest,
    'preferred_currencies' => $preferredCurrencies,
    'recent_fetches' => $recentFetches,
], JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);

$tabs = [
    ['label' => 'Ueberblick', 'href' => '/module/fx-rates', 'active' => true],
    ['label' => 'Waehrungen', 'href' => '/module/fx-rates/currencies'],
];
?>
<div id="fx-rates-app" data-page='<?= e(is_string($pageData) ? $pageData : '{}') ?>'>
  <div class="submenu-box">
    <div class="fx-submenu-row">
      <nav class="module-tabs" aria-label="Unterseiten von Waehrungskurse">
        <?php foreach ($tabs as $tab): ?>
          <a
            class="<?= !empty($tab['active']) ? 'module-button module-button--tab-active' : 'module-button module-button--tab' ?>"
            href="<?= e((string) $tab['href']) ?>"
          ><?= e((string) $tab['label']) ?></a>
        <?php endforeach; ?>
      </nav>
      <div class="module-submenu-actions">
        <a class="module-button module-button--secondary module-button--small" href="/modules/setup/fx-rates">Setup</a>
        <a class="module-button module-button--secondary module-button--small" href="/module/fx-rates?refresh=1">Aktuelle Kurse abrufen</a>
      </div>
    </div>
  </div>

  <?php if ($notice !== ''): ?>
    <section class="section-box">
      <div class="fx-message is-success"><?= e($notice) ?></div>
    </section>
  <?php elseif ($error !== ''): ?>
    <section class="section-box">
      <div class="fx-message is-error"><?= e($error) ?></div>
    </section>
  <?php endif; ?>

  <section class="section-box">
    <div class="fx-section-head">
      <div>
        <h2>Umrechnung</h2>
        <p>Umrechnung auf Basis des letzten verfuegbaren Kurses zwischen den bevorzugten Waehrungen.</p>
      </div>
    </div>
    <p class="fx-api-note">
      API-Self-Describe-Endpoint:
      <a href="<?= e($apiDescribeUrl) ?>" target="_blank" rel="noopener noreferrer"><?= e($apiDescribeUrl) ?></a>
    </p>
    <div class="fx-form-grid">
      <label>
        <span>Quellwaehrung</span>
        <select name="convert_from">
          <?php foreach ($preferredCurrencies as $currency): ?>
            <option value="<?= e((string) $currency) ?>"><?= e((string) $currency) ?></option>
          <?php endforeach; ?>
        </select>
      </label>
      <label>
        <span>Zielwaehrung</span>
        <select name="convert_to">
          <?php foreach ($preferredCurrencies as $currency): ?>
            <option value="<?= e((string) $currency) ?>" <?= (string) $currency === (string) ($preferredCurrencies[1] ?? $preferredCurrencies[0] ?? '') ? 'selected' : '' ?>><?= e((string) $currency) ?></option>
          <?php endforeach; ?>
        </select>
      </label>
      <label>
        <span>Betrag</span>
        <input type="number" name="convert_amount" min="0" step="0.00000001" value="1">
      </label>
    </div>
    <div class="fx-convert-result" data-bind="convert-result">Noch keine Umrechnung berechnet.</div>
  </section>

  <section class="section-box">
    <div class="fx-card-head">
      <div>
        <h2>Kursverlauf</h2>
        <p>Neueste Abrufe zuerst. Verlauf der bevorzugten Waehrungen relativ zur Anzeige-Basiswaehrung.</p>
      </div>
      <div class="fx-card-meta">
        <div><strong>Anzeige-Basis:</strong> <?= e((string) ($settings['display_base_currency'] ?? $settings['default_base_currency'] ?? '')) ?></div>
        <div><strong>Letzter Abruf:</strong> <?= e((string) ($latest['fetched_at_display'] ?? $latest['fetched_at'] ?? 'noch keiner')) ?></div>
      </div>
    </div>
    <div class="fx-table-wrap">
      <table class="fx-table">
        <thead data-bind="history-head">
          <tr>
            <th>Datum</th>
            <th>Kurse</th>
          </tr>
        </thead>
        <tbody data-bind="history-body">
          <tr><td colspan="2">Noch keine Verlaufsdaten geladen.</td></tr>
        </tbody>
      </table>
    </div>
  </section>
  </div>