{% extends "base.html" %}
{% block content %}

<!-- Step 1: Start New Session -->
<div class="panel" id="step1">
  <h2>New Conversion Session</h2>

  <form id="session-form" onsubmit="startSession(event)">
    <div class="form-group">
      <label for="vmid">VM ID *</label>
      <input type="number" id="vmid" name="vmid" required
             placeholder="e.g. 21050" min="21000" max="21100">
      <span class="hint">Range 21000–21100. Must be unique on the Proxmox host.</span>
    </div>

    <div class="form-group">
      <label for="source-type">Source Type</label>
      <select id="source-type" onchange="toggleSourceInput(event)">
        <option value="upload">File Upload</option>
        <option value="url">Download from URL</option>
      </select>
    </div>

    <div class="form-group" id="upload-group">
      <label for="source-file">Source File (.vmdk / .7z / .zip / .tar.gz)</label>
      <input type="file" id="source-file" name="source_file"
             accept=".vmdk,.vhd,.vhdx,.7z,.zip,.tar.gz,.tgz,.tar,.gz">
    </div>

    <div class="form-group hidden" id="url-group">
      <label for="source-url">Download URL</label>
      <input type="url" id="source-url" name="source_url"
             placeholder="https://example.com/image.7z">
    </div>

    <button type="submit" id="start-btn">Analyse Source Image</button>
  </form>

  <div id="session-status" class="hidden" style="margin-top:1rem;"></div>
</div>

<!-- Step 2: Analysis Result (populated by JavaScript) -->
<div id="analysis-section"></div>

<script>
function toggleSourceInput(e) {
  const type = e.target.value;
  document.getElementById('upload-group').classList.toggle('hidden', type !== 'upload');
  document.getElementById('url-group').classList.toggle('hidden', type !== 'url');
}

async function startSession(e) {
  e.preventDefault();
  const btn = document.getElementById('start-btn');
  const status = document.getElementById('session-status');
  btn.disabled = true;
  status.classList.remove('hidden');
  status.innerHTML = '<div class="spinner"></div> Analysing source image...';

  const formData = new FormData();
  formData.append('vmid', document.getElementById('vmid').value);

  const sourceType = document.getElementById('source-type').value;
  formData.append('source_type', sourceType);

  if (sourceType === 'upload') {
    const fileInput = document.getElementById('source-file');
    if (fileInput.files.length > 0) {
      formData.append('source_file', fileInput.files[0]);
    } else {
      status.innerHTML = '<div class="error">Please select a file.</div>';
      btn.disabled = false;
      return;
    }
  } else {
    const url = document.getElementById('source-url').value.trim();
    if (!url) {
      status.innerHTML = '<div class="error">Please enter a URL.</div>';
      btn.disabled = false;
      return;
    }
    formData.append('source_url', url);
  }

  try {
    const resp = await fetch('/session/start', { method: 'POST', body: formData });
    const html = await resp.text();
    document.getElementById('analysis-section').innerHTML = html;
    status.classList.add('hidden');
  } catch (err) {
    status.innerHTML = `<div class="error">Failed: ${err.message}</div>`;
  } finally {
    btn.disabled = false;
  }
}
</script>

{% endblock %}