{{- $stage := .Get "stage" | default "alpha-beta" -}}
{{- $stageMap := dict "alpha-beta" (slice "Alpha" "Beta") "ga-deprecated" (slice "GA" "Deprecated") -}}
{{- $selectedStages := index $stageMap $stage -}}
{{- if not $selectedStages -}}
  {{- errorf "feature-gates-table: unsupported stage %q" $stage -}}
{{- end -}}
{{- $features := hugo.Data.featuregates.versioned_feature_list -}}
<table class="feature-gates-table">
  <thead>
    <tr>
      <th>Feature</th>
      <th>Default</th>
      <th>Stage</th>
      <th>Since</th>
      <th>Until</th>
    </tr>
  </thead>
  <tbody>
    {{- range $features }}
      {{- $featureName := .name -}}
      {{- $specs := .versionedSpecs -}}
      {{- range $i, $spec := $specs }}
        {{- if in $selectedStages $spec.preRelease }}
          {{- $nextIndex := add $i 1 -}}
          {{- $until := "" -}}
          {{- if lt $nextIndex (len $specs) -}}
            {{- $until = (index $specs $nextIndex).version -}}
          {{- end -}}
          <tr>
            <td><code>{{ $featureName }}</code></td>
            <td><code>{{ if $spec.default }}true{{ else }}false{{ end }}</code></td>
            <td>{{ $spec.preRelease }}</td>
            <td>{{ $spec.version }}</td>
            <td>{{ if $until }}{{ $until }}{{ else }}&mdash;{{ end }}</td>
          </tr>
        {{- end -}}
      {{- end -}}
    {{- end -}}
  </tbody>
</table>