nixos-router/pkgs/router-webui/templates/upgrade.html

{{define "content"}}
<div class="cols">
{{$d := .Data}}
<section>
  <h2>Packages</h2>
  <p>Upgrades the kernel and all programs (NixOS) without a new release of nixos-router. Nothing is downloaded until
     you ask for it, and an upgrade is activated like a settings change: unless you confirm it in time, the router
     goes back to the previous system.</p>
  <dl>
    <dt>Running</dt><dd>{{or $d.Version "unknown"}}</dd>
  </dl>
  <form method="post" action="/upgrade/channel" class="actions">
    <input type="hidden" name="csrf" value="{{.CSRF}}">
    <label>Follow
      <select name="channel">
        {{range $d.Choices}}<option value="{{.Value}}"{{if eq .Value $d.Channel}} selected{{end}}>{{.Label}}</option>{{end}}
      </select>
    </label>
    <button class="secondary">Save</button>
  </form>
  <p class="hint">The channel only chooses what an upgrade offers; saving it changes nothing on the router. NixOS cannot go back to
     an older release.</p>
</section>

{{if $d.Updating}}
<section class="busy"><h2>Updating…</h2><p>The router is installing a new version of nixos-router.</p></section>
{{else if $d.Run.Running}}
<section class="busy"><h2>Working…</h2><p>This page refreshes on its own. The web UI restarts when an upgrade is switched on.</p></section>
{{else if $d.Pending}}
<section class="pending"><h2>Waiting for confirmation</h2>
  <p>A new system is active and not confirmed yet. Confirm it on the <a href="/">Overview</a>, or the router goes back to the
     previous one.</p></section>
{{end}}

{{if $d.Channel}}
<section>
  <h2>Check</h2>
  <form method="post" action="/upgrade/check" class="actions">
    <input type="hidden" name="csrf" value="{{.CSRF}}">
    <button class="secondary"{{if or $d.Run.Running $d.Updating}} disabled{{end}}>Check for upgrades</button>
  </form>
  {{with $d.Check}}
    <dl>
      <dt>Channel</dt><dd>{{.Branch}}</dd>
      <dt>Running</dt><dd>{{.Running.Version}}</dd>
      <dt>Newest</dt><dd>{{printf "%.7s" .Newest.Rev}} <span class="muted">checked {{.Time}}</span></dd>
    </dl>
    {{if .UpToDate}}<p>Up to date.</p>{{else}}<p>A newer revision is available.</p>{{end}}
  {{end}}
</section>

<section>
  <h2>What would change</h2>
  <form method="post" action="/upgrade/preview" class="actions">
    <input type="hidden" name="csrf" value="{{.CSRF}}">
    {{if and $d.Check $d.Check.UpToDate}}<label><input type="checkbox" name="force"> look anyway</label>{{end}}
    <button class="secondary"{{if or $d.Run.Running $d.Updating}} disabled{{end}}>Preview</button>
  </form>
  <p class="hint">Works it out from the new revision's description: no package is downloaded.</p>
  {{with $d.Preview}}
    <p><strong>{{.Version}}</strong> <span class="muted">{{printf "%.7s" .Rev}}, previewed {{.Time}}</span></p>
    {{if .Changes}}
    <table>
      <thead><tr><th>Package</th><th>Now</th><th></th><th>New</th></tr></thead>
      <tbody>{{range .Changes}}<tr><td>{{.Name}}</td><td>{{.From}}</td><td>→</td><td>{{.To}}</td></tr>{{end}}</tbody>
    </table>
    {{else}}<p>No package changes.</p>{{end}}
    <p class="hint">The list shows the versions of programs the router runs; a program that is only rebuilt does not appear.</p>
    <dl>
      <dt>To download</dt><dd>{{or .Download "nothing, or the package cache cannot be reached"}}</dd>
      <dt>Built here</dt><dd>{{.Builds}} derivation{{if ne .Builds 1}}s{{end}}{{if gt .Builds 50}} <span class="muted">(many: the package cache may not have them yet; this takes long)</span>{{end}}</dd>
      {{if .RebootNeeded}}<dt>Kernel</dt><dd>A new kernel: it runs after the next reboot.</dd>{{end}}
    </dl>
    <div class="actions">
      <form method="post" action="/upgrade/download">
        <input type="hidden" name="csrf" value="{{$.CSRF}}">
        <button class="secondary"{{if or $d.Run.Running $d.Updating $d.Pending}} disabled{{end}}>Download now</button>
      </form>
      <form method="post" action="/upgrade/apply">
        <input type="hidden" name="csrf" value="{{$.CSRF}}">
        <button{{if or $d.Run.Running $d.Updating $d.Pending}} disabled{{end}}>Upgrade to {{.Version}}</button>
      </form>
    </div>
    <p class="hint">Downloading first lets you start the upgrade later without needing the internet. Upgrading
       downloads what is missing, builds the system and switches to it; confirm it on the Overview.</p>
  {{end}}
</section>
{{else}}
<section><p>Choose a channel to look for upgrades.</p></section>
{{end}}

{{if $d.Run.Log}}
<section>
  <h2>Last run{{if $d.Run.Result}} — {{if eq $d.Run.Result "success"}}succeeded{{else}}failed ({{$d.Run.Result}}){{end}}{{end}}</h2>
  <pre class="log">{{$d.Run.Log}}</pre>
</section>
{{end}}
</div>
{{end}}