{% extends "base_admin.html" %}

{% block title %}BackItUp - Neues Backup{% endblock %}

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

  .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;
  }

  .mini-input {
    margin-top: 8px;
    display: flex;
    gap: 8px;
  }

  .mini-input input {
    margin: 0;
  }

  .inline-help {
    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;
  }

  .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 {
    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-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;
    transition: background 120ms;
  }

  .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_new') }}" id="backupForm">
  <input type="hidden" id="source_entry_type" name="source_entry_type" value="directory">
  <input type="hidden" id="target_kind" name="target_kind" value="folder">

  <div class="wizard-nav" id="wizardNav">
    <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" placeholder="" 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 protocol in target_protocols %}
          <option value="{{ protocol }}">{{ protocol }}</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" placeholder="" style="flex:1; margin-bottom:0;">
          <input id="source_port_ui" type="number" min="1" max="65535" placeholder="Port"
                 title="Port" 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" placeholder="">
      </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" placeholder="">
          <button type="button" class="btn-browse" onclick="openLocalBrowserOverlay('source')" title="Browser &ouml;ffnen">🔍</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">
        </div>
        <div>
          <label for="source_password">Passwort</label>
          <input id="source_password" name="source_password" type="password">
        </div>
      </div>

      <label for="source_subpath">Pfad</label>
      <div class="path-input-group">
        <input id="source_subpath" name="source_subpath" type="text" placeholder="" value="/">
        <button type="button" class="btn-browse" onclick="browseSmb('source')" title="Browser &ouml;ffnen">🔍</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">
            <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 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 protocol in target_protocols %}
          <option value="{{ protocol }}">{{ protocol }}</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" placeholder="" style="flex:1; margin-bottom:0;">
          <input id="destination_port_ui" type="number" min="1" max="65535" placeholder="Port"
                 title="Port" 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" placeholder="">
      </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" placeholder="">
          <button type="button" class="btn-browse" onclick="openLocalBrowserOverlay('destination')" title="Browser &ouml;ffnen">🔍</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()">✕</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">
        </div>
        <div>
          <label for="destination_password">Passwort</label>
          <input id="destination_password" name="destination_password" type="password">
        </div>
      </div>

      <label for="destination_subpath">Pfad</label>
      <div class="path-input-group">
        <input id="destination_subpath" name="destination_subpath" type="text" placeholder="" value="/">
        <button type="button" class="btn-browse" onclick="browseSmb('destination')" title="Browser &ouml;ffnen">🔍</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()">✕</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" placeholder="" 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 == '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="0" style="width:100%;">
      </div>
      <div id="compression_col">
        <label for="compression_method">Kompression</label>
        <select id="compression_method" name="compression_method" required>
          {% for method in compression_methods %}
          <option value="{{ method }}">{% if method == 'none' %}Keine (1:1){% else %}{{ method }}{% 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 mode in encryption_modes %}
          <option value="{{ mode }}">{{ mode }}</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">
      </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">
      </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" placeholder="">
    <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">
      <button type="button" class="btn btn-secondary" onclick="prevStep(4)">Zurück</button>
      <button class="btn" type="submit">Backup speichern</button>
    </div>
  </section>
</form>

<script>
  let currentStep = 0;

  function htmlEscape(value) {
    return String(value)
      .replaceAll('&', '&amp;')
      .replaceAll('<', '&lt;')
      .replaceAll('>', '&gt;')
      .replaceAll('"', '&quot;')
      .replaceAll("'", '&#39;');
  }

  function showStep(stepIdx) {
    const steps = document.querySelectorAll('.wizard-step');
    const pills = document.querySelectorAll('[data-step-pill]');
    steps.forEach((el, idx) => el.classList.toggle('active', idx === stepIdx));
    pills.forEach((el, idx) => el.classList.toggle('active', idx === stepIdx));
    currentStep = stepIdx;
  }

  function requireValue(id, message) {
    const el = document.getElementById(id);
    if (!el || !el.value.trim()) {
      alert(message);
      el?.focus();
      return false;
    }
    return true;
  }

  function validateStep(stepIdx) {
    if (stepIdx === 0) {
      return requireValue('name', 'Bitte Backup Name setzen.');
    }

    if (stepIdx === 1) {
      const protocol = document.getElementById('source_protocol').value;
      if (protocol === 'LOCAL') {
        return requireValue('source_local_path', 'Bitte lokalen Source-Pfad angeben.');
      }
      if (!requireValue('source_host', 'Bitte Source-Host/IP setzen.')) return false;
      if (!requireValue('source_username', 'Bitte Source-Benutzer setzen.')) return false;
      if (!requireValue('source_password', 'Bitte Source-Passwort setzen.')) return false;
      if (protocol === 'SMB' && !requireValue('source_share', 'Bitte Source-Share setzen.')) return false;
      return requireValue('source_subpath', 'Bitte Source-Unterpfad setzen.');
    }

    if (stepIdx === 2) {
      const protocol = document.getElementById('destination_protocol').value;
      if (protocol === 'LOCAL') {
        return requireValue('destination_local_path', 'Bitte lokalen Destination-Pfad angeben.');
      }
      if (!requireValue('destination_host', 'Bitte Destination-Host/IP setzen.')) return false;
      if (!requireValue('destination_username', 'Bitte Destination-Benutzer setzen.')) return false;
      if (!requireValue('destination_password', 'Bitte Destination-Passwort setzen.')) return false;
      if (protocol === 'SMB' && !requireValue('destination_share', 'Bitte Destination-Share setzen.')) return false;
      return requireValue('destination_subpath', 'Bitte Destination-Unterpfad setzen.');
    }

    if (stepIdx === 3) {
      if (!requireValue('target_pattern', 'Bitte Zielordner oder Zieldatei setzen.')) return false;
      const mode = document.getElementById('encryption_mode').value;
      if (mode === 'password-aes256') {
        if (!requireValue('archive_password', 'Bitte Verschlüsselungs-Passwort setzen.')) return false;
        if (!requireValue('archive_password_confirm', 'Bitte Passwort bestätigen.')) return false;
      }
      return true;
    }

    return true;
  }

  function nextStep(stepIdx) {
    if (!validateStep(stepIdx)) return;
    showStep(Math.min(stepIdx + 1, 4));
  }

  function prevStep(stepIdx) {
    showStep(Math.max(stepIdx - 1, 0));
  }

  // token groups for Target drag-and-drop variables
  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 input = document.getElementById('target_pattern');
    const s = input.selectionStart ?? input.value.length;
    const e = input.selectionEnd ?? input.value.length;
    input.value = input.value.slice(0, s) + token + input.value.slice(e);
    input.setSelectionRange(s + token.length, s + token.length);
    input.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';
  }

  const _targetInput = document.getElementById('target_pattern');
  _targetInput.addEventListener('dragover', (e) => e.preventDefault());
  _targetInput.addEventListener('drop', (e) => {
    e.preventDefault();
    const token = e.dataTransfer.getData('text/plain');
    if (!token) return;
    const s = _targetInput.selectionStart ?? _targetInput.value.length;
    const end = _targetInput.selectionEnd ?? _targetInput.value.length;
    _targetInput.value = _targetInput.value.slice(0, s) + token + _targetInput.value.slice(end);
    _targetInput.setSelectionRange(s + token.length, s + token.length);
    _targetInput.focus();
  });

  document.addEventListener('click', (e) => {
    if (!e.target.closest('.token-chip') && !e.target.closest('.token-menu')) closeTokenMenu();
  });

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

  function closeCreateFolderOverlay() {
    document.getElementById('destination_new_folder_bar').style.display = 'none';
    document.getElementById('destination_new_folder_btn').style.display = '';
  }

  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); }
  });

  function setRequired(el, enabled) {
    if (!el) return;
    if (enabled) {
      el.setAttribute('required', 'required');
    } else {
      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,
      [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 portUi = document.getElementById(prefix + '_port_ui');
      const portVal = portUi?.value || (protocol === 'FTP' ? '21' : '22');
      const baseHost = String(payload[prefix + '_host'] || '').split(':')[0];
      payload[prefix + '_host'] = baseHost + ':' + portVal;
    }

    return payload;
  }

  function setSourceEntryType(entryType) {
    const t = entryType === 'file' ? 'file' : 'directory';
    document.getElementById('source_entry_type').value = t;
    document.getElementById('target_kind').value = t === '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 resp = await fetch('{{ url_for("api_local_browse") }}?path=' + encodeURIComponent(path));
      data = await resp.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';
    const currentPath = document.getElementById(prefix + '_local_path').value || '/';
    loadLocalBrowserLevel(prefix, currentPath);
  }

  function closeLocalBrowserOverlay(prefix) {
    document.getElementById(prefix + '_local_browser_overlay').style.display = 'none';
  }

  function acceptLocalBrowserSelection(prefix) {
    closeLocalBrowserOverlay(prefix);
  }

  function refreshLocalBrowserLevel(prefix) {
    const path = document.getElementById(prefix + '_local_path').value || '/';
    loadLocalBrowserLevel(prefix, path);
  }

  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 inp = document.getElementById('destination_local_new_folder');
    inp.value = ''; inp.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 resp = 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 resp.json();
    if (!data.ok) {
      const meta = document.getElementById('destination_local_browser_meta');
      meta.textContent = data.message || 'Fehler.';
      meta.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 resp = await fetch('{{ url_for("api_target_browse") }}', {
        method: 'POST',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify(payload)
      });
      data = await resp.json();
    } catch (err) {
      list.innerHTML = '<li class="tree-empty">Verbindungsfehler</li>';
      return;
    }

    const msg = document.getElementById(prefix + '_test_message');
    if (!data.ok) {
      msg.textContent = data.message || 'SMB-Browsing fehlgeschlagen.';
      msg.style.color = '#b9382f';
      list.innerHTML = '';
      return;
    }

    msg.textContent = '';
    document.getElementById(prefix + '_subpath').value = data.path;
    meta.textContent = 'Pfad: ' + data.path;

    list.innerHTML = '';
    const allEntries = data.entries || [];
    const entries = filterEntries(allEntries, prefix + '_smb_show_hidden');
    if (!entries.length) {
      const empty = document.createElement('li');
      empty.className = 'tree-empty';
      empty.textContent = 'Keine Einträge';
      list.appendChild(empty);
      return;
    }

    entries.forEach((entry) => {
      const li = document.createElement('li');
      const btn = document.createElement('button');
      btn.type = 'button';
      btn.className = 'tree-node';
      const icon = entry.entry_type === 'up' ? '↩' : (entry.entry_type === 'file' ? '📄' : '📁');
      btn.textContent = icon + ' ' + 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);
  }

  function refreshBrowserLevel(prefix) {
    const path = document.getElementById(prefix + '_subpath').value || '/';
    loadBrowserLevel(prefix, path);
  }

  function filterEntries(entries, cbId) {
    if (document.getElementById(cbId)?.checked) return entries;
    return entries.filter(e => e.entry_type === 'up' || !e.name.startsWith('.'));
  }

  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);
  }

  async function createDestinationFolder() {
    const folderInput = document.getElementById('destination_new_folder');
    const name = folderInput.value.trim();
    const msg = document.getElementById('destination_test_message');

    if (!name) {
      msg.textContent = 'Bitte zuerst einen neuen Ordnernamen eingeben.';
      msg.style.color = '#b9382f';
      return;
    }

    const payload = collectPayload('destination');
    payload.folder_name = name;

    const response = await fetch('{{ url_for("api_target_smb_mkdir") }}', {
      method: 'POST',
      headers: { 'Content-Type': 'application/json' },
      body: JSON.stringify(payload)
    });
    const data = await response.json();

    if (!data.ok) {
      msg.textContent = data.message || 'Ordner konnte nicht erstellt werden.';
      msg.style.color = '#b9382f';
      return;
    }

    folderInput.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 compression = 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 (compression === '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();
  }

  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 resp = await fetch('{{ url_for("api_cron_preview") }}', {
        method: 'POST',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify({ cron: val })
      });
      const data = await resp.json();
      if (!data.ok) {
        preview.style.display = 'none';
        errEl.textContent = data.message || 'Ungültiger CRON-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);
  });

  syncProtocolFields('source');
  syncProtocolFields('destination');
  syncBackupMode();
  setSourceEntryType('directory');
  buildTokenBar();
  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 %}