app/themes/hugo-theme-stack/layouts/page/search.json

{{- $pages := where .Site.RegularPages "Type" "in" .Site.Params.mainSections -}}
{{- $notHidden := where .Site.RegularPages "Params.hidden" "!=" true -}}
{{- $filtered := ($pages | intersect $notHidden) -}}

{{- $result := slice -}}

{{- range $filtered -}}
    {{- $data := dict "title" .Title "date" .Date "permalink" .Permalink "content" (.Plain) -}}

    {{- $image := partialCached "helper/image" (dict "Context" . "Type" "articleList") .RelPermalink "articleList" -}}
    {{- if $image.exists -}}
        {{- $imagePermalink := "" -}}
        {{- if and $image.resource (default true .Page.Site.Params.imageProcessing.cover.enabled) -}}
            {{- $thumbnail := $image.resource.Fill "120x120" -}}
            {{- $imagePermalink = (absURL $thumbnail.Permalink) -}}
        {{- else -}}
            {{- $imagePermalink = $image.permalink -}}
        {{- end -}}
        
        {{- $data = merge $data (dict "image" (absURL $imagePermalink)) -}}
    {{- end -}}

    {{- $result = $result | append $data -}}
{{- end -}}

{{ jsonify $result }}