{% extends "base_admin.html" %}

{% block title %}StFV Backup - Backup bearbeiten{% endblock %}

{% block content %}
<h2 style="margin-bottom:4px;">Backup bearbeiten</h2>

<style>
  .wizard-step { display: none; }
  .wizard-step.active { display: block; animation: fade-slide 240ms ease; }
  .wizard-nav { margin-top: 0; margin-bottom: 8px; display: flex; gap: 8px; flex-wrap: wrap; }
  .wizard-pill { border: 1px solid rgba(30,42,59,0.2); padding: 6px 10px; border-radius: 999px; font-size: 12px; color: #5a6e87; background: #fff; cursor: pointer; }
  .wizard-pill.active { border-color: rgba(10,127,104,0.35); background: #e5fff7; color: #0a7f68; font-weight: 700; }
  .step-actions { margin-top: 12px; display: flex; gap: 10px; align-items: center; }
  .btn-secondary { border: 1px solid rgba(30,42,59,0.2); background: #fff; color: #1e2a3b; }
  .tree { list-style: none; margin: 8px 0 0; padding: 0 0 0 8px; border-left: 1px solid rgba(30,42,59,0.15); }
  .tree li { margin: 4px 0; padding-left: 10px; position: relative; }
  .tree li::before { content: ""; position: absolute; left: -8px; top: 12px; width: 8px; border-top: 1px solid rgba(30,42,59,0.15); }
  .tree-node { border: 0; background: transparent; color: #1e2a3b; font-weight: 600; cursor: pointer; padding: 3px 4px; border-radius: 6px; }
  .tree-node:hover { background: #eef6ff; }
  .tree-node.active { background: #e5fff7; color: #0a7f68; }
  .tree-meta { font-size: 13px; color: #5a6e87; margin-top: 6px; }
  .tree-empty { color: #5a6e87; font-size: 13px; }
  .browser-overlay { position: fixed; inset: 0; background: rgba(10,20,34,0.52); display: none; align-items: center; justify-content: center; z-index: 1100; padding: 20px; }
  .browser-dialog { background: #fff; border-radius: 16px; width: min(92vw,560px); max-height: 74vh; display: flex; flex-direction: column; box-shadow: 0 20px 48px rgba(30,42,59,0.24); overflow: hidden; position: relative; }
  .browser-dialog-header { display: flex; justify-content: space-between; align-items: center; padding: 14px 16px; border-bottom: 1px solid rgba(30,42,59,0.12); }
  .browser-dialog-body { padding: 12px 16px 16px; overflow: auto; }
  .browser-dialog-actions { display: flex; justify-content: space-between; align-items: center; gap: 8px; padding: 10px 16px 14px; border-top: 1px solid rgba(30,42,59,0.12); }
  .browser-dialog-actions .btn-secondary { background: #fff; }
  .browser-dialog-right { display: flex; gap: 8px; }
  .create-folder-overlay { position: absolute; inset: 0; background: rgba(255,255,255,0.97); backdrop-filter: blur(4px); z-index: 20; display: flex; align-items: center; justify-content: center; border-radius: 16px; }
  .create-folder-box { padding: 20px; width: 100%; max-width: 320px; display: grid; gap: 10px; }
  .create-folder-box strong { font-size: 15px; }
  .create-folder-actions { display: flex; gap: 8px; justify-content: flex-end; }
  .step-header { margin: -16px -16px 14px; padding: 12px 16px; border-bottom: 1px solid rgba(30,42,59,0.08); background: rgba(30,42,59,0.025); border-radius: 14px 14px 0 0; }
  .step-header h3 { margin: 0; }
  .token-bar { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 10px; }
  .token-chip { display: inline-flex; align-items: center; padding: 4px 11px; border-radius: 999px; background: #e5fff7; border: 1px solid rgba(10,127,104,0.35); color: #0a7f68; font-size: 12px; font-weight: 700; cursor: grab; user-select: none; }
  .token-chip:hover { background: #c8f5e8; }
  .token-menu { position: fixed; z-index: 3000; background: #fff; border: 1px solid rgba(30,42,59,0.15); border-radius: 12px; box-shadow: 0 8px 24px rgba(30,42,59,0.18); padding: 6px; min-width: 190px; }
  .token-menu-item { padding: 7px 12px; border-radius: 8px; cursor: pointer; font-size: 13px; font-weight: 600; }
  .token-menu-item:hover { background: #f0f7ff; }
  .token-menu-sub { font-size: 11px; color: #5a6e87; font-weight: 400; margin-top: 1px; }
  .row-3 { grid-template-columns: minmax(90px,0.8fr) 2fr 1.4fr; }
  @media (max-width: 700px) { .row-3 { grid-template-columns: 1fr; } }

  .path-input-group { display: flex; gap: 6px; margin-bottom: 12px; }
  .path-input-group input { flex: 1; margin-bottom: 0; }
  .btn-browse { padding: 8px 11px; border-radius: 12px; border: 1px solid rgba(30,42,59,0.2); background: #fff; cursor: pointer; font-size: 15px; line-height: 1; color: #1e2a3b; flex-shrink: 0; }
  .btn-browse:hover { background: #f0f7ff; }
  .hidden-toggle { font-size: 12px; color: #5a6e87; display: flex; align-items: center; gap: 5px; cursor: pointer; font-weight: 600; }
  .hidden-toggle input[type="checkbox"] { width: auto; margin: 0; cursor: pointer; }
  @keyframes fade-slide { from { opacity:0; transform:translateY(8px); } to { opacity:1; transform:translateY(0); } }
</style>

<form method="post" action="{{ url_for('backup_edit', backup_id=backup.id) }}" id="backupForm">
  <input type="hidden" id="source_entry_type" name="source_entry_type" value="{{ backup.source_entry_type }}">
  <input type="hidden" id="target_kind" name="target_kind" value="{{ backup.target_kind }}">

  <div class="wizard-nav">
    <button type="button" class="wizard-pill active" data-step-pill="0" onclick="showStep(0)">Allgemein</button>
    <button type="button" class="wizard-pill" data-step-pill="1" onclick="showStep(1)">Source</button>
    <button type="button" class="wizard-pill" data-step-pill="2" onclick="showStep(2)">Destination</button>
    <button type="button" class="wizard-pill" data-step-pill="3" onclick="showStep(3)">Target</button>
    <button type="button" class="wizard-pill" data-step-pill="4" onclick="showStep(4)">Zeitplan</button>
  </div>

  <section class="card wizard-step active" data-step="0">
    <div class="step-header"><h3>Allgemein</h3></div>
    <label for="name">Backup Name</label>
    <input id="name" name="name" type="text" value="{{ backup.name }}" required>
    <div class="step-actions">
      <button type="button" class="btn" onclick="nextStep(0)">Weiter</button>
    </div>
  </section>

  <section class="card wizard-step" data-step="1">
    <div class="step-header"><h3>Source</h3></div>
    <div class="row row-3">
      <div>
        <label for="source_protocol">Typ</label>
        <select id="source_protocol" name="source_protocol" required>
          {% for p in target_protocols %}<option value="{{ p }}" {% if p == backup.source_protocol %}selected{% endif %}>{{ p }}</option>{% endfor %}
        </select>
      </div>
      <div id="source_host_col" style="display:none;">
        <label for="source_host">Host/IP</label>
        <div style="display:flex; gap:6px;">
          <input id="source_host" name="source_host" type="text" value="{{ backup.source_host }}" style="flex:1; margin-bottom:0;">
          <input id="source_port_ui" type="number" min="1" max="65535" placeholder="Port"
                 title="Port" value="{{ backup.source_port or '' }}" style="width:72px; margin-bottom:0; display:none;">
        </div>
      </div>
      <div id="source_share_row" style="display:none;">
        <label for="source_share">Freigabe</label>
        <input id="source_share" name="source_share" type="text" value="{{ backup.source_share }}">
      </div>
      <div id="source_local_path_col" style="display:none; grid-column: 2 / -1;">
        <label for="source_local_path">Lokaler Pfad</label>
        <div class="path-input-group">
          <input id="source_local_path" type="text" value="{{ backup.source_local_path }}">
          <button type="button" class="btn-browse" onclick="openLocalBrowserOverlay('source')" title="Browser öffnen">🔍</button>
        </div>
      </div>
    </div>

    <div id="source_local_browser_overlay" class="browser-overlay">
      <div class="browser-dialog" role="dialog" aria-modal="true" aria-label="Lokaler Browser">
        <div class="browser-dialog-header"><strong>Lokaler Browser</strong><label class="hidden-toggle"><input type="checkbox" id="source_local_show_hidden" onchange="refreshLocalBrowserLevel('source')"> Versteckte</label><button type="button" class="btn btn-secondary" onclick="closeLocalBrowserOverlay('source')">×</button></div>
        <div class="browser-dialog-body"><div id="source_local_browser_meta" class="tree-meta"></div><ul id="source_local_browser_tree" class="tree"></ul></div>
        <div class="browser-dialog-actions">
          <div></div>
          <div class="browser-dialog-right">
            <button type="button" class="btn btn-secondary" onclick="closeLocalBrowserOverlay('source')">Abbrechen</button>
            <button type="button" class="btn" onclick="acceptLocalBrowserSelection('source')">Auswählen</button>
          </div>
        </div>
      </div>
    </div>
    <div id="source_remote_fields" style="display:none;">
      <div class="row">
        <div><label for="source_username">Benutzer</label><input id="source_username" name="source_username" type="text" value="{{ backup.source_username }}"></div>
        <div><label for="source_password">Passwort</label><input id="source_password" name="source_password" type="password" value="{{ backup.source_password }}"></div>
      </div>
      <label for="source_subpath">Pfad</label>
      <div class="path-input-group">
        <input id="source_subpath" name="source_subpath" type="text" value="{{ backup.source_subpath }}">
        <button type="button" class="btn-browse" onclick="browseSmb('source')" title="Browser öffnen">🔍</button>
      </div>
      <p id="source_test_message"></p>
      <div id="source_browser_overlay" class="browser-overlay">
        <div class="browser-dialog" role="dialog" aria-modal="true" aria-label="Browser">
          <div class="browser-dialog-header"><strong>Browser</strong><label class="hidden-toggle"><input type="checkbox" id="source_smb_show_hidden" onchange="refreshBrowserLevel('source')"> Versteckte</label><button type="button" class="btn btn-secondary" onclick="closeBrowserOverlay('source')">×</button></div>
          <div class="browser-dialog-body"><div id="source_browser_meta" class="tree-meta"></div><ul id="source_browser_tree" class="tree"></ul></div>
          <div class="browser-dialog-actions">
            <div></div>
            <div class="browser-dialog-right">
              <button type="button" class="btn btn-secondary" onclick="closeBrowserOverlay('source')">Abbrechen</button>
              <button type="button" class="btn" onclick="acceptBrowserSelection('source')">Auswählen</button>
            </div>
          </div>
        </div>
      </div>
    </div>
    <div class="step-actions">
      <button type="button" class="btn btn-secondary" onclick="prevStep(1)">Zurück</button>
      <button type="button" class="btn" onclick="nextStep(1)">Weiter</button>
    </div>
  </section>

  <section class="card wizard-step" data-step="2">
    <div class="step-header"><h3>Destination</h3></div>
    <div class="row row-3">
      <div>
        <label for="destination_protocol">Typ</label>
        <select id="destination_protocol" name="destination_protocol" required>
          {% for p in target_protocols %}<option value="{{ p }}" {% if p == backup.destination_protocol %}selected{% endif %}>{{ p }}</option>{% endfor %}
        </select>
      </div>
      <div id="destination_host_col" style="display:none;">
        <label for="destination_host">Host/IP</label>
        <div style="display:flex; gap:6px;">
          <input id="destination_host" name="destination_host" type="text" value="{{ backup.destination_host }}" style="flex:1; margin-bottom:0;">
          <input id="destination_port_ui" type="number" min="1" max="65535" placeholder="Port"
                 title="Port" value="{{ backup.destination_port or '' }}" style="width:72px; margin-bottom:0; display:none;">
        </div>
      </div>
      <div id="destination_share_row" style="display:none;">
        <label for="destination_share">Freigabe</label>
        <input id="destination_share" name="destination_share" type="text" value="{{ backup.destination_share }}">
      </div>
      <div id="destination_local_path_col" style="display:none; grid-column: 2 / -1;">
        <label for="destination_local_path">Lokaler Pfad</label>
        <div class="path-input-group">
          <input id="destination_local_path" type="text" value="{{ backup.destination_local_path }}">
          <button type="button" class="btn-browse" onclick="openLocalBrowserOverlay('destination')" title="Browser öffnen">🔍</button>
        </div>
      </div>
    </div>

    <div id="destination_local_browser_overlay" class="browser-overlay">
      <div class="browser-dialog" role="dialog" aria-modal="true" aria-label="Lokaler Browser">
        <div class="browser-dialog-header"><strong>Lokaler Browser</strong><label class="hidden-toggle"><input type="checkbox" id="destination_local_show_hidden" onchange="refreshLocalBrowserLevel('destination')"> Versteckte</label><button type="button" class="btn btn-secondary" onclick="closeLocalBrowserOverlay('destination')">×</button></div>
        <div class="browser-dialog-body"><div id="destination_local_browser_meta" class="tree-meta"></div><ul id="destination_local_browser_tree" class="tree"></ul></div>
        <div class="browser-dialog-actions">
          <div id="destination_local_new_folder_bar" style="display:none; flex:1; align-items:center; gap:6px;">
            <input id="destination_local_new_folder" type="text" placeholder="Ordnername" autocomplete="off" style="flex:1; min-width:0; margin:0;">
            <button class="btn" type="button" onclick="createLocalDestinationFolder()">Erstellen</button>
            <button class="btn btn-secondary" type="button" onclick="closeLocalCreateFolderOverlay()">&#x2715;</button>
          </div>
          <button id="destination_local_new_folder_btn" type="button" class="btn btn-secondary" onclick="openLocalCreateFolderOverlay()">Ordner erstellen</button>
          <div class="browser-dialog-right">
            <button type="button" class="btn btn-secondary" onclick="closeLocalBrowserOverlay('destination')">Abbrechen</button>
            <button type="button" class="btn" onclick="acceptLocalBrowserSelection('destination')">Auswählen</button>
          </div>
        </div>
      </div>
    </div>
    <div id="destination_remote_fields" style="display:none;">
      <div class="row">
        <div><label for="destination_username">Benutzer</label><input id="destination_username" name="destination_username" type="text" value="{{ backup.destination_username }}"></div>
        <div><label for="destination_password">Passwort</label><input id="destination_password" name="destination_password" type="password" value="{{ backup.destination_password }}"></div>
      </div>
      <label for="destination_subpath">Pfad</label>
      <div class="path-input-group">
        <input id="destination_subpath" name="destination_subpath" type="text" value="{{ backup.destination_subpath }}">
        <button type="button" class="btn-browse" onclick="browseSmb('destination')" title="Browser öffnen">🔍</button>
      </div>
      <p id="destination_test_message"></p>
      <div id="destination_browser_overlay" class="browser-overlay">
        <div class="browser-dialog" role="dialog" aria-modal="true" aria-label="Browser">
          <div class="browser-dialog-header"><strong>Browser</strong><label class="hidden-toggle"><input type="checkbox" id="destination_smb_show_hidden" onchange="refreshBrowserLevel('destination')"> Versteckte</label><button type="button" class="btn btn-secondary" onclick="closeBrowserOverlay('destination')">×</button></div>
          <div class="browser-dialog-body"><div id="destination_browser_meta" class="tree-meta"></div><ul id="destination_browser_tree" class="tree"></ul></div>
          <div class="browser-dialog-actions">
            <div id="destination_new_folder_bar" style="display:none; flex:1; align-items:center; gap:6px;">
              <input id="destination_new_folder" type="text" placeholder="Ordnername" autocomplete="off" style="flex:1; min-width:0; margin:0;">
              <button class="btn" type="button" onclick="createDestinationFolder()">Erstellen</button>
              <button class="btn btn-secondary" type="button" onclick="closeCreateFolderOverlay()">&#x2715;</button>
            </div>
            <button id="destination_new_folder_btn" type="button" class="btn btn-secondary" onclick="openCreateFolderOverlay()">Ordner erstellen</button>
            <div class="browser-dialog-right">
              <button type="button" class="btn btn-secondary" onclick="closeBrowserOverlay('destination')">Abbrechen</button>
              <button type="button" class="btn" onclick="acceptBrowserSelection('destination')">Auswählen</button>
            </div>
          </div>
        </div>
      </div>
    </div>
    <div class="step-actions">
      <button type="button" class="btn btn-secondary" onclick="prevStep(2)">Zurück</button>
      <button type="button" class="btn" onclick="nextStep(2)">Weiter</button>
    </div>
  </section>

  <section class="card wizard-step" data-step="3">
    <div class="step-header"><h3>Target</h3></div>

    <div id="target_pattern_box">
      <label for="target_pattern">Ziel</label>
      <div class="token-bar" id="token_bar"></div>
      <input id="target_pattern" name="target_pattern" type="text" value="{{ backup.target_pattern }}" required>
      <div id="token_context_menu" class="token-menu" style="display:none;"></div>
    </div>

    <div class="row" style="grid-template-columns: 1fr 120px 1fr;">
      <div>
        <label for="backup_mode">Backup-Modus</label>
        <select id="backup_mode" name="backup_mode" onchange="syncBackupMode()">
          {% for mode in backup_modes %}
          <option value="{{ mode }}" {% if mode == backup.backup_mode %}selected{% endif %}>{% if mode == 'full' %}Vollständig{% elif mode == 'sync' %}Sync{% else %}Clone{% endif %}</option>
          {% endfor %}
        </select>
      </div>
      <div id="rotation_col">
        <label for="rotation_keep">Rotation (0=∞)</label>
        <input id="rotation_keep" name="rotation_keep" type="number" min="0" value="{{ backup.rotation_keep }}" style="width:100%;">
      </div>
      <div id="compression_col">
        <label for="compression_method">Kompression</label>
        <select id="compression_method" name="compression_method" required>
          {% for m in compression_methods %}<option value="{{ m }}" {% if m == backup.compression_method %}selected{% endif %}>{% if m == 'none' %}Keine (1:1){% else %}{{ m }}{% endif %}</option>{% endfor %}
        </select>
      </div>
    </div>

    <div id="encryption_row" class="row" style="display:none; grid-template-columns: 1fr 1fr 1fr;">
      <div>
        <label for="encryption_mode">Verschlüsselung</label>
        <select id="encryption_mode" name="encryption_mode" required>
          {% for m in encryption_modes %}<option value="{{ m }}" {% if m == backup.encryption_mode %}selected{% endif %}>{{ m }}</option>{% endfor %}
        </select>
      </div>
      <div id="archive_pwd_col" style="display:none;">
        <label for="archive_password">Passwort</label>
        <input id="archive_password" name="archive_password" type="password" value="{{ backup.archive_password }}">
      </div>
      <div id="archive_pwd2_col" style="display:none;">
        <label for="archive_password_confirm">Bestätigen</label>
        <input id="archive_password_confirm" name="archive_password_confirm" type="password" value="{{ backup.archive_password }}">
      </div>
    </div>
    <div class="step-actions">
      <button type="button" class="btn btn-secondary" onclick="prevStep(3)">Zurück</button>
      <button type="button" class="btn" onclick="nextStep(3)">Weiter</button>
    </div>
  </section>

  <section class="card wizard-step" data-step="4">
    <div class="step-header"><h3>Zeitplan</h3></div>
    <label for="schedule_cron">CRON Ausdruck</label>
    <input id="schedule_cron" name="schedule_cron" type="text" value="{{ backup.schedule_cron }}">
    <div id="cron_preview" style="display:none;margin-top:6px;font-size:13px;color:#1e2a3b;">
      <div id="cron_description" style="font-weight:600;"></div>
      <div id="cron_next_run" style="color:#5a6e87;"></div>
    </div>
    <div id="cron_error" style="display:none;margin-top:6px;font-size:13px;color:#b9382f;"></div>
    <div class="step-actions">
      <a class="btn btn-secondary" href="{{ url_for('dashboard') }}" style="text-decoration:none;">Abbrechen</a>
      <button type="button" class="btn btn-secondary" onclick="prevStep(4)">Zurück</button>
      <button class="btn" type="submit">Speichern</button>
    </div>
  </section>
</form>

<script>
  let currentStep = 0;
  function htmlEscape(v) { return String(v).replaceAll('&','&amp;').replaceAll('<','&lt;').replaceAll('>','&gt;').replaceAll('"','&quot;').replaceAll("'",'&#39;'); }

  function showStep(i) {
    document.querySelectorAll('.wizard-step').forEach((el, idx) => el.classList.toggle('active', idx === i));
    document.querySelectorAll('[data-step-pill]').forEach((el, idx) => el.classList.toggle('active', idx === i));
    currentStep = i;
  }
  function requireValue(id, msg) { const el = document.getElementById(id); if (!el || !el.value.trim()) { alert(msg); el?.focus(); return false; } return true; }
  function validateStep(i) {
    if (i === 0) return requireValue('name', 'Bitte Backup Name setzen.');
    if (i === 1) {
      const p = document.getElementById('source_protocol').value;
      if (p === 'LOCAL') return requireValue('source_local_path', 'Bitte lokalen Source-Pfad angeben.');
      if (!requireValue('source_host','Bitte Host/IP setzen.')) return false;
      if (!requireValue('source_username','Bitte Benutzer setzen.')) return false;
      if (!requireValue('source_password','Bitte Passwort setzen.')) return false;
      if (p === 'SMB' && !requireValue('source_share','Bitte Share setzen.')) return false;
      return requireValue('source_subpath','Bitte Pfad setzen.');
    }
    if (i === 2) {
      const p = document.getElementById('destination_protocol').value;
      if (p === 'LOCAL') return requireValue('destination_local_path', 'Bitte lokalen Destination-Pfad angeben.');
      if (!requireValue('destination_host','Bitte Host/IP setzen.')) return false;
      if (!requireValue('destination_username','Bitte Benutzer setzen.')) return false;
      if (!requireValue('destination_password','Bitte Passwort setzen.')) return false;
      if (p === 'SMB' && !requireValue('destination_share','Bitte Share setzen.')) return false;
      return requireValue('destination_subpath','Bitte Pfad setzen.');
    }
    if (i === 3) {
      if (!requireValue('target_pattern','Bitte Ziel setzen.')) return false;
      if (document.getElementById('encryption_mode').value === 'password-aes256') {
        if (!requireValue('archive_password','Bitte Passwort setzen.')) return false;
        if (!requireValue('archive_password_confirm','Bitte Passwort bestätigen.')) return false;
      }
      return true;
    }
    return true;
  }
  function nextStep(i) { if (!validateStep(i)) return; showStep(Math.min(i+1,4)); }
  function prevStep(i) { showStep(Math.max(i-1,0)); }
  function setRequired(el, on) { if (!el) return; on ? el.setAttribute('required','required') : el.removeAttribute('required'); }

  function syncProtocolFields(prefix) {
    const protocol = document.getElementById(prefix+'_protocol').value;
    const remoteFields = document.getElementById(prefix+'_remote_fields');
    const localPathCol = document.getElementById(prefix+'_local_path_col');
    const hostCol = document.getElementById(prefix+'_host_col');
    const shareRow = document.getElementById(prefix+'_share_row');
    const host = document.getElementById(prefix+'_host');
    const share = document.getElementById(prefix+'_share');
    const subpath = document.getElementById(prefix+'_subpath');
    const user = document.getElementById(prefix+'_username');
    const pass = document.getElementById(prefix+'_password');
    const localPath = document.getElementById(prefix+'_local_path');
    if (protocol === 'LOCAL') {
      remoteFields.style.display='none'; localPathCol.style.display='block';
      hostCol.style.display='none'; shareRow.style.display='none';
      const portUiL = document.getElementById(prefix+'_port_ui');
      if (portUiL) { portUiL.style.display='none'; portUiL.value=''; }
      setRequired(host,false); setRequired(share,false); setRequired(user,false); setRequired(pass,false); setRequired(localPath,true);
      subpath.value = localPath.value||''; share.value=''; user.value=''; pass.value=''; host.value='local';
      if (prefix==='source') setSourceEntryType('directory');
      return;
    }
    remoteFields.style.display='block'; localPathCol.style.display='none';
    hostCol.style.display='block'; shareRow.style.display = protocol==='SMB'?'block':'none';
    setRequired(host,true); setRequired(share,protocol==='SMB'); setRequired(user,true); setRequired(pass,true); setRequired(localPath,false);
    const portUi = document.getElementById(prefix+'_port_ui');
    if (portUi) {
      if (protocol==='FTP') { portUi.style.display='block'; if(!portUi.value) portUi.value='21'; }
      else if (protocol==='SFTP') { portUi.style.display='block'; if(!portUi.value) portUi.value='22'; }
      else { portUi.style.display='none'; portUi.value=''; }
    }
    if (protocol==='FTP'||protocol==='SFTP') { if(!share.value) share.value='/'; if(!subpath.value) subpath.value='/'; }
  }

  function collectPayload(prefix) {
    const protocol = document.getElementById(prefix+'_protocol').value;
    const payload = { prefix, [prefix+'_protocol']: protocol,
      [prefix+'_host']: document.getElementById(prefix+'_host').value,
      [prefix+'_share']: document.getElementById(prefix+'_share').value,
      [prefix+'_subpath']: document.getElementById(prefix+'_subpath').value,
      [prefix+'_username']: document.getElementById(prefix+'_username').value,
      [prefix+'_password']: document.getElementById(prefix+'_password').value };
    if (protocol==='LOCAL') {
      payload[prefix+'_host']='local'; payload[prefix+'_share']=''; payload[prefix+'_username']=''; payload[prefix+'_password']='';
      payload[prefix+'_subpath'] = document.getElementById(prefix+'_local_path').value;
      document.getElementById(prefix+'_subpath').value = payload[prefix+'_subpath'];
    }
    if (protocol==='FTP'||protocol==='SFTP') {
      const pUi=document.getElementById(prefix+'_port_ui');
      const pVal=pUi?.value||(protocol==='FTP'?'21':'22');
      payload[prefix+'_host']=String(payload[prefix+'_host']||'').split(':')[0]+':'+pVal;
    }
    return payload;
  }

  function setSourceEntryType(t) {
    const type = t==='file'?'file':'directory';
    document.getElementById('source_entry_type').value = type;
    document.getElementById('target_kind').value = type==='file'?'file':'folder';
  }

  async function loadLocalBrowserLevel(prefix, path) {
    const list = document.getElementById(prefix+'_local_browser_tree');
    const meta = document.getElementById(prefix+'_local_browser_meta');
    list.innerHTML='<li class="tree-empty">L\u00e4dt\u2026</li>';
    let data;
    try { const r=await fetch('{{ url_for("api_local_browse") }}?path='+encodeURIComponent(path)); data=await r.json(); }
    catch(e) { list.innerHTML='<li class="tree-empty">Verbindungsfehler</li>'; return; }
    if (!data.ok) { meta.textContent=''; list.innerHTML='<li class="tree-empty">'+htmlEscape(data.message)+'</li>'; return; }
    meta.textContent='Pfad: '+data.path;
    document.getElementById(prefix+'_local_path').value=data.path;
    document.getElementById(prefix+'_subpath').value=data.path;
    list.innerHTML='';
    const allEntries=data.entries||[];
    const entries=filterEntries(allEntries, prefix+'_local_show_hidden');
    if (!entries.length) { const e=document.createElement('li'); e.className='tree-empty'; e.textContent='Keine Eintr\u00e4ge'; list.appendChild(e); return; }
    entries.forEach(entry=>{
      const li=document.createElement('li'); const btn=document.createElement('button');
      btn.type='button'; btn.className='tree-node';
      btn.textContent=(entry.entry_type==='up'?'\u21a9':entry.entry_type==='file'?'\ud83d\udcc4':'\ud83d\udcc1')+' '+entry.name;
      btn.addEventListener('click',()=>{
        if (entry.entry_type==='file') {
          document.getElementById(prefix+'_local_path').value=entry.path;
          document.getElementById(prefix+'_subpath').value=entry.path;
          if(prefix==='source') setSourceEntryType('file');
          list.querySelectorAll('.tree-node').forEach(n=>n.classList.remove('active')); btn.classList.add('active');
          meta.textContent='Pfad: '+entry.path;
        } else {
          document.getElementById(prefix+'_local_path').value=entry.path;
          document.getElementById(prefix+'_subpath').value=entry.path;
          if(prefix==='source') setSourceEntryType('directory');
          loadLocalBrowserLevel(prefix,entry.path);
        }
      });
      li.appendChild(btn); list.appendChild(li);
    });
  }
  function openLocalBrowserOverlay(prefix) {
    document.getElementById(prefix+'_local_browser_overlay').style.display='flex';
    loadLocalBrowserLevel(prefix, document.getElementById(prefix+'_local_path').value||'/');
  }
  function closeLocalBrowserOverlay(prefix) { document.getElementById(prefix+'_local_browser_overlay').style.display='none'; }
  function acceptLocalBrowserSelection(prefix) { closeLocalBrowserOverlay(prefix); }
  function refreshLocalBrowserLevel(prefix) {
    loadLocalBrowserLevel(prefix, document.getElementById(prefix+'_local_path').value||'/');
  }
  function openLocalCreateFolderOverlay() {
    document.getElementById('destination_local_new_folder_btn').style.display='none';
    const bar=document.getElementById('destination_local_new_folder_bar');
    bar.style.display='flex';
    const i=document.getElementById('destination_local_new_folder'); i.value=''; i.focus();
  }
  function closeLocalCreateFolderOverlay() {
    document.getElementById('destination_local_new_folder_bar').style.display='none';
    document.getElementById('destination_local_new_folder_btn').style.display='';
  }
  async function createLocalDestinationFolder() {
    const inp=document.getElementById('destination_local_new_folder'); const name=inp.value.trim();
    if (!name) return;
    const currentPath=document.getElementById('destination_local_path').value||'/';
    const r=await fetch('{{ url_for("api_local_mkdir") }}',{method:'POST',headers:{'Content-Type':'application/json'},body:JSON.stringify({path:currentPath,folder_name:name})});
    const data=await r.json();
    if (!data.ok) { const m=document.getElementById('destination_local_browser_meta'); m.textContent=data.message||'Fehler.'; m.style.color='#b9382f'; return; }
    inp.value=''; document.getElementById('destination_local_path').value=data.path; document.getElementById('destination_subpath').value=data.path;
    closeLocalCreateFolderOverlay(); loadLocalBrowserLevel('destination',data.path);
  }

  async function loadBrowserLevel(prefix, path) {
    const list = document.getElementById(prefix+'_browser_tree');
    const meta = document.getElementById(prefix+'_browser_meta');
    list.innerHTML = '<li class="tree-empty">Lädt…</li>';
    const payload = collectPayload(prefix); payload[prefix+'_subpath'] = path;
    let data;
    try { const r = await fetch('{{ url_for("api_target_browse") }}',{method:'POST',headers:{'Content-Type':'application/json'},body:JSON.stringify(payload)}); data=await r.json(); }
    catch(e) { list.innerHTML='<li class="tree-empty">Verbindungsfehler</li>'; return; }
    const msg = document.getElementById(prefix+'_test_message');
    if (!data.ok) { msg.textContent=data.message||'Fehler.'; msg.style.color='#b9382f'; list.innerHTML=''; return; }
    msg.textContent=''; document.getElementById(prefix+'_subpath').value=data.path; meta.textContent='Pfad: '+data.path;
    list.innerHTML='';
    const allEntries2=data.entries||[];
    const entries=filterEntries(allEntries2, prefix+'_local_show_hidden');
    if (!entries.length) { const e=document.createElement('li'); e.className='tree-empty'; e.textContent='Keine Einträge'; list.appendChild(e); return; }
    entries.forEach(entry=>{
      const li=document.createElement('li'); const btn=document.createElement('button');
      btn.type='button'; btn.className='tree-node';
      btn.textContent=(entry.entry_type==='up'?'↩':entry.entry_type==='file'?'📄':'📁')+' '+entry.name;
      btn.addEventListener('click',()=>{
        if (entry.entry_type==='file') {
          document.getElementById(prefix+'_subpath').value=entry.path;
          if (prefix==='source') setSourceEntryType('file');
          list.querySelectorAll('.tree-node').forEach(n=>n.classList.remove('active')); btn.classList.add('active');
          document.getElementById(prefix+'_test_message').textContent='Datei ausgewählt: '+entry.path;
          document.getElementById(prefix+'_test_message').style.color='#0a7f68';
        } else { if(prefix==='source') setSourceEntryType('directory'); document.getElementById(prefix+'_subpath').value=entry.path; loadBrowserLevel(prefix,entry.path); }
      });
      li.appendChild(btn); list.appendChild(li);
    });
  }

  function openBrowserOverlay(prefix) {
    const p=document.getElementById(prefix+'_protocol').value;
    if (!['SMB','FTP','SFTP'].includes(p)) return;
    document.getElementById(prefix+'_browser_overlay').style.display='flex';
    loadBrowserLevel(prefix,document.getElementById(prefix+'_subpath').value||'/');
  }
  function closeBrowserOverlay(prefix) { document.getElementById(prefix+'_browser_overlay').style.display='none'; }
  function acceptBrowserSelection(prefix) { closeBrowserOverlay(prefix); }
  async function browseSmb(prefix) {
    const p=document.getElementById(prefix+'_protocol').value;
    if (!['SMB','FTP','SFTP'].includes(p)) {
      const msg=document.getElementById(prefix+'_test_message');
      msg.textContent='Browser ist nur bei SMB, FTP und SFTP verfügbar.';
      msg.style.color='#b9382f'; return;
    }
    openBrowserOverlay(prefix);
  }
  function refreshBrowserLevel(prefix) { loadBrowserLevel(prefix, document.getElementById(prefix+'_subpath').value||'/'); }
  function filterEntries(entries, cbId) {
    if (document.getElementById(cbId)?.checked) return entries;
    return entries.filter(e => e.entry_type==='up' || !e.name.startsWith('.'));
  }

  function openCreateFolderOverlay() {
    document.getElementById('destination_new_folder_btn').style.display='none';
    const bar=document.getElementById('destination_new_folder_bar');
    bar.style.display='flex';
    const i=document.getElementById('destination_new_folder'); i.value=''; i.focus();
  }
  function closeCreateFolderOverlay() {
    document.getElementById('destination_new_folder_bar').style.display='none';
    document.getElementById('destination_new_folder_btn').style.display='';
  }

  async function createDestinationFolder() {
    const inp=document.getElementById('destination_new_folder'); const name=inp.value.trim();
    const msg=document.getElementById('destination_test_message');
    if (!name) { msg.textContent='Bitte Ordnernamen eingeben.'; msg.style.color='#b9382f'; return; }
    const payload=collectPayload('destination'); payload.folder_name=name;
    const r=await fetch('{{ url_for("api_target_smb_mkdir") }}',{method:'POST',headers:{'Content-Type':'application/json'},body:JSON.stringify(payload)});
    const data=await r.json();
    if (!data.ok) { msg.textContent=data.message||'Fehler.'; msg.style.color='#b9382f'; return; }
    inp.value=''; document.getElementById('destination_subpath').value=data.path;
    msg.textContent='Ordner erstellt: '+data.path; msg.style.color='#0a7f68';
    closeCreateFolderOverlay(); loadBrowserLevel('destination',data.path);
  }

  function syncCompressionFields() {
    const c=document.getElementById('compression_method').value;
    const encRow=document.getElementById('encryption_row');
    const encSel=document.getElementById('encryption_mode');
    const pwdCol=document.getElementById('archive_pwd_col');
    const pwd2Col=document.getElementById('archive_pwd2_col');
    const pwd=document.getElementById('archive_password'); const pwd2=document.getElementById('archive_password_confirm');
    if (c==='none') { encRow.style.display='none'; encSel.value='none'; setRequired(pwd,false); setRequired(pwd2,false); pwd.value=''; pwd2.value=''; return; }
    encRow.style.display='';
    const showPwd=encSel.value==='password-aes256';
    pwdCol.style.display=showPwd?'':'none'; pwd2Col.style.display=showPwd?'':'none';
    setRequired(pwd,showPwd); setRequired(pwd2,showPwd);
    if (!showPwd) { pwd.value=''; pwd2.value=''; }
  }

  function syncBackupMode() {
    const mode=document.getElementById('backup_mode').value;
    const compCol=document.getElementById('compression_col');
    const compSel=document.getElementById('compression_method');
    const rotCol=document.getElementById('rotation_col');
    const targetBox=document.getElementById('target_pattern_box');
    const targetInput=document.getElementById('target_pattern');
    if (mode==='sync'||mode==='clone') {
      compSel.value='none'; compSel.disabled=true;
      compCol.style.opacity='0.45';
      compCol.title='Sync/Clone arbeitet immer ohne Kompression';
      rotCol.style.display='none';
      targetBox.style.display='none';
      targetInput.removeAttribute('required');
    } else {
      compSel.disabled=false; compCol.style.opacity=''; compCol.title='';
      rotCol.style.display='';
      targetBox.style.display='';
      targetInput.setAttribute('required', '');
    }
    syncCompressionFields();
  }

  const TOKEN_GROUPS = [
    {label:'Datum',defaultToken:'{date}',formats:[{token:'{date}',label:'YYYY-MM-DD',sub:'2026-07-30'},{token:'{date_de}',label:'TT.MM.JJJJ',sub:'30.07.2026'},{token:'{date_compact}',label:'JJJJMMTT',sub:'20260730'}]},
    {label:'Uhrzeit',defaultToken:'{time}',formats:[{token:'{time}',label:'HH-MM-SS',sub:'14-30-00'},{token:'{time_short}',label:'HHMM',sub:'1430'}]},
    {label:'Datum+Zeit',defaultToken:'{datetime}',formats:[{token:'{datetime}',label:'JJJJ-MM-TT_HH-MM-SS',sub:'2026-07-30_14-30-00'}]},
  ];
  const activeTokens = TOKEN_GROUPS.map(g=>g.defaultToken);

  function buildTokenBar() {
    const bar=document.getElementById('token_bar'); bar.innerHTML='';
    TOKEN_GROUPS.forEach((group,idx)=>{
      const chip=document.createElement('span'); chip.className='token-chip'; chip.draggable=true;
      chip.textContent=group.label; chip.title=activeTokens[idx]+' · Rechtsklick für Formate';
      chip.addEventListener('click',()=>insertToken(activeTokens[idx]));
      chip.addEventListener('dragstart',e=>{e.dataTransfer.setData('text/plain',activeTokens[idx]);e.dataTransfer.effectAllowed='copy';});
      chip.addEventListener('contextmenu',e=>{e.preventDefault();showTokenMenu(e,group,idx);});
      bar.appendChild(chip);
    });
  }
  function insertToken(token) {
    const inp=document.getElementById('target_pattern'); const s=inp.selectionStart??inp.value.length; const e=inp.selectionEnd??inp.value.length;
    inp.value=inp.value.slice(0,s)+token+inp.value.slice(e); inp.setSelectionRange(s+token.length,s+token.length); inp.focus();
  }
  function showTokenMenu(ev,group,idx) {
    const menu=document.getElementById('token_context_menu'); menu.innerHTML='';
    group.formats.forEach(fmt=>{
      const item=document.createElement('div'); item.className='token-menu-item';
      item.innerHTML='<div>'+htmlEscape(fmt.label)+'</div><div class="token-menu-sub">'+htmlEscape(fmt.token)+' &nbsp;·&nbsp; '+htmlEscape(fmt.sub)+'</div>';
      item.addEventListener('click',()=>{activeTokens[idx]=fmt.token;buildTokenBar();closeTokenMenu();insertToken(fmt.token);});
      menu.appendChild(item);
    });
    menu.style.left=ev.clientX+'px'; menu.style.top=ev.clientY+'px'; menu.style.display='block';
    requestAnimationFrame(()=>{ const r=menu.getBoundingClientRect(); if(r.right>window.innerWidth) menu.style.left=(ev.clientX-r.width)+'px'; if(r.bottom>window.innerHeight) menu.style.top=(ev.clientY-r.height)+'px'; });
  }
  function closeTokenMenu() { document.getElementById('token_context_menu').style.display='none'; }
  document.addEventListener('click',e=>{ if(!e.target.closest('.token-chip')&&!e.target.closest('.token-menu')) closeTokenMenu(); });

  const _tp=document.getElementById('target_pattern');
  _tp.addEventListener('dragover',e=>e.preventDefault());
  _tp.addEventListener('drop',e=>{ e.preventDefault(); const t=e.dataTransfer.getData('text/plain'); if(!t) return; const s=_tp.selectionStart??_tp.value.length; const en=_tp.selectionEnd??_tp.value.length; _tp.value=_tp.value.slice(0,s)+t+_tp.value.slice(en); _tp.setSelectionRange(s+t.length,s+t.length); _tp.focus(); });

  document.getElementById('destination_new_folder').addEventListener('keydown',e=>{ if(e.key==='Enter'){e.preventDefault();createDestinationFolder();} if(e.key==='Escape') closeCreateFolderOverlay(); });
  document.getElementById('name').addEventListener('keydown',e=>{ if(e.key==='Enter'){e.preventDefault();nextStep(0);} });

  let _cronTimer=null;
  async function updateCronPreview() {
    const val=document.getElementById('schedule_cron').value.trim();
    const preview=document.getElementById('cron_preview'); const errEl=document.getElementById('cron_error');
    if (!val) { preview.style.display='none'; errEl.style.display='none'; return; }
    try {
      const r=await fetch('{{ url_for("api_cron_preview") }}',{method:'POST',headers:{'Content-Type':'application/json'},body:JSON.stringify({cron:val})});
      const data=await r.json();
      if (!data.ok) { preview.style.display='none'; errEl.textContent=data.message||'Ungültiger Ausdruck.'; errEl.style.display='block'; return; }
      document.getElementById('cron_description').textContent=data.description;
      document.getElementById('cron_next_run').textContent='Nächstes Backup: '+data.next_run;
      preview.style.display='block'; errEl.style.display='none';
    } catch(_) { preview.style.display='none'; }
  }

  document.getElementById('source_protocol').addEventListener('change',()=>syncProtocolFields('source'));
  document.getElementById('destination_protocol').addEventListener('change',()=>syncProtocolFields('destination'));
  document.getElementById('source_local_path').addEventListener('input',ev=>{ document.getElementById('source_subpath').value=ev.target.value; });
  document.getElementById('destination_local_path').addEventListener('input',ev=>{ document.getElementById('destination_subpath').value=ev.target.value; });
  document.getElementById('destination_local_new_folder').addEventListener('keydown',(e)=>{ if(e.key==='Enter'){e.preventDefault();createLocalDestinationFolder();}  if(e.key==='Escape') closeLocalCreateFolderOverlay(); });
  document.getElementById('compression_method').addEventListener('change',syncCompressionFields);
  document.getElementById('encryption_mode').addEventListener('change',syncCompressionFields);
  document.getElementById('schedule_cron').addEventListener('input',()=>{ clearTimeout(_cronTimer); _cronTimer=setTimeout(updateCronPreview,500); });

  // Preserve pre-filled passwords: syncProtocolFields may clear pass for LOCAL,
  // but for remote protocols the pre-filled "***" value stays untouched.
  syncProtocolFields('source');
  syncProtocolFields('destination');
  // syncBackupMode calls syncCompressionFields internally
  syncBackupMode();
  buildTokenBar();
  if (document.getElementById('schedule_cron').value.trim()) updateCronPreview();
  showStep(0);

  // Merge port into host field before form submission (FTP/SFTP)
  document.getElementById('backupForm').addEventListener('submit', () => {
    for (const prefix of ['source', 'destination']) {
      const protocol = document.getElementById(prefix + '_protocol').value;
      if (protocol === 'FTP' || protocol === 'SFTP') {
        const hostEl = document.getElementById(prefix + '_host');
        const portUi = document.getElementById(prefix + '_port_ui');
        if (portUi?.value && hostEl) {
          hostEl.value = hostEl.value.split(':')[0] + ':' + portUi.value;
        }
      }
    }
  });
</script>
{% endblock %}