{{ $docs_stable_version := .sv }}
{{ $docs_total_versions := .tv }}
{{ $docs_type := .docs_type }}
{{ $current_version := .cv }}
{{ $permalink := .permalink }}
{{ $content_file_path := .content_file_path }}
{{ $doesnot_exist_ver := slice ""}}

{{- range $idx, $i := $docs_total_versions -}}

{{ $file_path := print "./content/" (replaceRE "(/v\\d+\\.\\d+|\\/dev|\\/stable)" (print "/" $i) $content_file_path)}}

{{- if not (fileExists $file_path) -}}
{{ $doesnot_exist_ver = $doesnot_exist_ver | append $i }}
{{- end -}}

{{- end -}}

<div class="version-switcher">
    <button type="button" id="dropdownMenuButton">
        {{- if and (eq $current_version "stable") (ne $docs_type "tidb_data_migration") -}}
        {{ $docs_stable_version }}
        {{- else if eq $current_version "v1.1" -}}
        v1.1 (stable)
        {{- else if and (eq $current_version "stable") (eq $docs_type "tidb_data_migration") -}}
        v1.0
        {{- else -}}
        {{ $current_version }}
        {{- end -}}
    </button>
    <div class="dropdown-menu visibility-hide" id="dropdown-menu-items">
        {{- range $idx, $i := $docs_total_versions -}}
        {{- if not (eq $idx 0) -}}
        {{ $docs_index_page := findRE "(/v\\d+\\.\\d+|\\/dev|\\/stable)" $permalink }}
        {{ $exist_url := replaceRE "(/v\\d+\\.\\d+|\\/dev|\\/stable)" (print "/" $i) $permalink}}
        {{ $relative_url := replaceRE "(/search)" "" $exist_url }}
        <a class="dropdown-item {{ if in $doesnot_exist_ver $i }}unclickable-btn{{ end }}"
            href="
                {{ if in $doesnot_exist_ver $i }}#{{ else }}{{ if $docs_index_page }}{{ $relative_url }}{{ else }}{{ print $permalink $i }}{{ end }}{{ end }}">
            {{- if and (eq $i "stable") (ne $docs_type "tidb_data_migration") -}}
            {{ $docs_stable_version }} (stable)
            {{- else if eq $i "v1.1" -}}
            v1.1 (stable)
            {{- else if and (eq $i "stable") (eq $docs_type "tidb_data_migration") -}}
            v1.0 (stable)
            {{- else -}}
            {{ $i }}
            {{- end -}}
            {{- if in $doesnot_exist_ver $i -}}
            <span class="tooltiptext">This doc does not exist in {{ $i }}</span>
            {{- end -}}
        </a>
        {{- end -}}
        {{- end -}}
    </div>
</div>