{{/*  input parameters  */}}

{{ $params := . }}
{{ $rows := .rows }}

{{ $moduleStatusToCount := .moduleStatusToCount }}
{{ $moduleStatusToCount_allowedValues := slice "All" "Proposed" "Available" "Orphaned" "Deprecated" }}
{{ if not (in $moduleStatusToCount_allowedValues $moduleStatusToCount) }}
  {{ errorf "Invalid value for moduleStatusToCount: %s" $moduleStatusToCount }}
{{ end }}

{{ $countParentsOrChildren := .countParentsOrChildren | default "ParentsOnly" }}
{{ $countParentsOrChildren_allowedValues := slice "ParentsOnly" "ChildrenOnly" "Both" }}
{{ if not (in $countParentsOrChildren_allowedValues $countParentsOrChildren) }}
  {{ errorf "Invalid value for countParentsOrChildren: %s" $countParentsOrChildren }}
{{ end }}

{{ $moduleCount := 0 }}

{{/*  using named columns  */}}
{{ $headerRow := index $rows 0 }}
{{ $headerMap := dict }}
{{ range $index, $header := $headerRow }}
  {{ $headerMap = merge $headerMap (dict $header $index) }}
{{ end }}

{{ $ModuleStatusColumnId := index $headerMap "ModuleStatus" }}
{{ $ParentModuleColumnId := index $headerMap "ParentModule" | default "" }}


{{/*  skipping the first row, so we don't count the header row  */}}
{{ $rows = after 1 $rows }}

{{/*  counting rows that match the criteria  */}}
{{ range $index, $row := $rows }}
{{ if or (eq $moduleStatusToCount "All") (eq (index $row $ModuleStatusColumnId) $moduleStatusToCount) }}
    {{ if eq $countParentsOrChildren "ParentsOnly" }}
      {{ if or (eq $ParentModuleColumnId "") (or (eq (index $row $ParentModuleColumnId) "n/a") (eq (index $row $ParentModuleColumnId) "")) }}
        {{ $moduleCount = add $moduleCount 1 }}
      {{ end }}
    {{ else if eq $countParentsOrChildren "ChildrenOnly" }}
      {{ if or (eq $ParentModuleColumnId "") (and (ne (index $row $ParentModuleColumnId) "n/a") (ne (index $row $ParentModuleColumnId) "") ) }}
        {{ $moduleCount = add $moduleCount 1 }}
      {{ end }}
    {{ else if eq $countParentsOrChildren "Both" }}
      {{ $moduleCount = add $moduleCount 1 }}
    {{ end }}
  {{ end }}
{{ end }}

{{ return $moduleCount }}