{{- /*

    Template to render a page with a `changelog` layout or the `changelog`
    section page. This conflation seems to be a limitation of Hugo currently, it
    uses this template for both cases.

    For the `changelog` section page, this redirects the page to the latest
    version's changelog page.

    For a page with a `changelog` layout, this adds a table at the top of the
    page with information about the release:

    * A link to the matrix-spec repository at the time of the release, with the
      version taken from the `linkTitle` in the frontmatter of the page, unless
      it is the unstable changelog.
    * The date of the release, taken from the `date` in the frontmatter of the
      page, unless it is the unstable changelog.
    * A link to the markdown checklist format of the changelog. The `outputs` in
      the frontmatter of the page must include `checklist`.

*/ -}}

{{ define "main" }}
{{ if .IsSection -}}
    {{ with index .RegularPages.ByDate.Reverse 0 -}}
    <meta http-equiv="refresh" content="0; url={{ .RelPermalink }}">
    {{ end -}}
{{ else -}}
    {{ $version := lower .LinkTitle -}}
<div class="td-content">
    <h1>{{ .Title }}</h1>

    <table class="release-info">
        {{ $rev := $version }}
        {{ if eq $version "unstable" -}}
            {{- /*
                Extract the git SHA from the frontmatter of the changelog, where
                it was stashed by `generate-changelog.sh`.
            */ -}}
            {{ $rev = .Params.commit -}}
        {{ end -}}
        {{ $commitLink := printf "https://github.com/matrix-org/matrix-spec/tree/%s" $rev -}}
        <tr><th>Git commit</th><td><a href="{{ $commitLink }}">{{ $commitLink }}</a></td>
        {{ if ne $version "unstable" }}
        <tr><th>Release date</th><td>{{ .Date | time.Format ":date_long" }}</td>
        {{ end -}}
        {{ $checklist := .OutputFormats.Get "checklist" -}}
        <tr><th>Checklist</th><td><a href="{{ $checklist.RelPermalink }}">checklist.md</a></td>
    </table>

    {{ .Content }}
</div>
{{ end -}}
{{ end }}