<!--
    Renders a role's class (i.e. colour based on paid/unpaid).

    @params end_date    The end date of the role, or undefined if the role is ongoing.
    @params is_paid Whether the role is paid or not.
-->

<!-- Validation -->

{{- if ( not ( isset . "end_date" ) ) -}}
  {{- errorf "No end date passed" -}}
{{- end -}}

{{- if ( not ( isset . "is_paid" ) ) -}}
  {{- errorf "No 'is_paid' passed" -}}
{{- end -}}


<!-- Variable Assignment -->

{{- $end_date := .end_date -}}
{{- $is_paid := .is_paid -}}


<!-- Variable Initialisation -->

{{- $unpaid_past := "#FFFFF0" -}}
{{- $paid_past := "#FCFCA6" -}}
{{- $unpaid_current := "#BBBBB0" -}}
{{- $paid_current := "#BCBC7E" -}}
{{- $colour := "" -}}


<!-- Rendering -->

{{- if $end_date -}}
  {{- if $is_paid -}}
    {{- $colour = $paid_past -}}
  {{- else -}}
    {{- $colour = $unpaid_past -}}
  {{- end -}}
{{- else -}}
  {{- if $is_paid -}}
    {{- $colour = $paid_current -}}
  {{- else -}}
    {{- $colour = $unpaid_current -}}
  {{- end -}}
{{- end }}

{{- return $colour -}}