{{define "layout"}}

<article class="Downloads Article">

<h1>{{.title}}</h1>

{{with .dl}}
<p>
After downloading a binary release suitable for your system,
please follow the <a href="/doc/install">installation instructions</a>.
</p>

<p>
If you are building from source,
follow the <a href="/doc/install/source">source installation instructions</a>.
</p>

<p>
See the <a href="/doc/devel/release.html">release history</a> for more
information about Go releases.
</p>

<p>
  As of Go 1.13, the go command by default downloads and authenticates
  modules using the Go module mirror and Go checksum database run by Google. See
  <a href="https://proxy.golang.org/privacy">https://proxy.golang.org/privacy</a>
  for privacy information about these services and the
  <a href="/cmd/go/">go command documentation</a>
  for configuration details including how to disable the use of these servers or use
  different ones.
</p>

{{with .Featured}}
<h2 id="featured">Featured downloads</h2>
<div class="downloadWrapper">
{{range .}}
{{template "download" .}}
{{end}}
{{end}}
</div>

<div style="clear: both;"></div>

{{with .Stable}}
<h2 id="stable">Stable versions</h2>
{{template "download-releases" .}}
{{end}}

{{with .Unstable}}
<h2 id="unstable">Unstable version</h2>
{{template "download-releases" .}}
{{end}}

{{with .Archive}}
<div class="toggle" id="archive">
  <div class="collapsed">
    <h2 class="toggleButton" title="Click to show versions">Archived versions ▸</h2>
  </div>
  <div class="expanded">
    <h2 class="toggleButton" title="Click to hide versions">Archived versions ▾</h2>
    {{template "download-releases" .}}
  </div>
</div>
{{end}}

<script>
$(document).ready(function() {
  $('a.download').click(function(e) {
    // Try using the link text as the file name,
    // unless there's a child element of class 'filename'.
    var filename = $(this).text();
    var child = $(this).find('.filename');
    if (child.length > 0) {
      filename = child.text();
    }

    // This must be kept in sync with the filenameRE in godocs.js.
    var filenameRE = /^go1\.\d+(\.\d+)?([a-z0-9]+)?\.([a-z0-9]+)(-[a-z0-9]+)?(-osx10\.[68])?\.([a-z.]+)$/;
    var m = filenameRE.exec(filename);
    if (!m) {
      // Don't redirect to the download page if it won't recognize this file.
      // (Should not happen.)
      return;
    }

    var dest = "/doc/install";
    if (filename.indexOf(".src.") != -1) {
      dest += "/source";
    }
    dest += "?download=" + filename;

    e.preventDefault();
    e.stopPropagation();
    window.location = dest;
  });
});
</script>
{{end}}

</article>

{{end}}

{{define "download-releases"}}
{{range .}}
<div class="toggle{{if .Visible}}Visible{{end}}" id="{{.Version}}">
	<div class="collapsed">
		<h3 class="toggleButton" title="Click to show downloads for this version">{{.Version}} ▸</h3>
	</div>
	<div class="expanded">
		<h3 class="toggleButton" title="Click to hide downloads for this version">{{.Version}} ▾</h3>
		{{if .Stable}}{{else}}
			<p>This is an <b>unstable</b> version of Go. Use with caution.</p>
			<p>If you already have Go installed, you can install this version by running:</p>
<pre>
go install golang.org/dl/{{.Version}}@latest
</pre>
			<p>Then, use the <code>{{.Version}}</code> command instead of the <code>go</code> command to use {{.Version}}.</p>
		{{end}}
		{{template "download-files" .}}
	</div>
</div>
{{end}}
{{end}}

{{define "download-files"}}
<table class="downloadtable">
<thead>
<tr class="first">
  <th>File name</th>
  <th>Kind</th>
  <th>OS</th>
  <th>Arch</th>
  <th>Size</th>
  {{/* Use the checksum type of the first file for the column heading. */}}
  <th>{{(index .Files 0).ChecksumType}} Checksum</th>
</tr>
</thead>
{{if .SplitPortTable}}
  {{range .Files}}{{if .PrimaryPort}}{{template "download-file" .}}{{end}}{{end}}

  {{/* TODO(cbro): add a link to an explanatory doc page */}}
  <tr class="first"><th colspan="6" class="first">Other Ports</th></tr>
  {{range .Files}}{{if not .PrimaryPort}}{{template "download-file" .}}{{end}}{{end}}
{{else}}
  {{range .Files}}{{template "download-file" .}}{{end}}
{{end}}
</table>
{{end}}

{{define "download-file"}}
<tr{{if .Highlight}} class="highlight"{{end}}>
  <td class="filename"><a class="download" href="{{.URL}}">{{.Filename}}</a></td>
  <td>{{.PrettyKind}}</td>
  <td>{{.PrettyOS}}</td>
  <td>{{.PrettyArch}}</td>
  <td>{{.PrettySize}}</td>
  <td><tt>{{.PrettyChecksum}}</tt></td>
</tr>
{{end}}

{{define "download"}}
<a class="download downloadBox" href="{{.URL}}">
<div class="platform">{{.Platform}}</div>
{{with .Requirements}}<div class="reqs">{{.}}</div>{{end}}
<div class="filename">
  <img src="/images/icons/download.svg" aria-hidden="true" width="14" height="13" />
  <span>{{.Filename}}</span>
</div>
</a>
{{end}}