hugo-theme-stack-stars/layouts/partials/helper/image.html

{{ $result := dict "exists" false "permalink" nil "resource" nil "isDefault" false }}
{{ $imageField := .Context.Params.image }}

{{ if $imageField }}
    <!-- If page has `image` field set -->
    {{ $result = merge $result (dict "exists" true) }}

    {{ $url := urls.Parse $imageField }}
    {{ if or (eq $url.Scheme "http") (eq $url.Scheme "https") }}
        <!-- Is a external image -->
        {{ $result = merge $result (dict "permalink" $imageField) }}
    {{ else }}
        {{ $pageResourceImage := .Context.Resources.GetMatch (printf "%s" ($imageField | safeURL)) }}
        {{ $siteResourceImage := resources.GetMatch (printf "%s" ($imageField | safeURL)) }}
        
        {{ if $pageResourceImage }}
            <!-- If image is found under page bundle -->
            {{ $result = merge $result (dict "permalink" $pageResourceImage.RelPermalink) }}
            {{ $result = merge $result (dict "resource" $pageResourceImage) }}
        {{ else if $siteResourceImage }}
            <!-- Try search image under site's assets folder -->
            {{ $result = merge $result (dict "permalink" $siteResourceImage.RelPermalink) }}
            {{ $result = merge $result (dict "resource" $siteResourceImage) }}
        {{ else }}
            <!-- Can not find the image -->
            {{ errorf "Failed loading image: %q" $imageField }}
            {{ $result = merge $result (dict "exists" false) }}
        {{ end }}
    {{ end }}

{{ else if and (ne .Type nil) (index .Context.Site.Params.defaultImage .Type) }}
    <!-- Type arg is set, check for defaultImage setting -->
    
    {{ $defaultImageSetting := index .Context.Site.Params.defaultImage .Type }}

    {{ if $defaultImageSetting.enabled }}
        {{ $result = merge $result (dict "isDefault" true) }}
        {{ $result = merge $result (dict "exists" true) }}

        {{ if $defaultImageSetting.local }}
            {{ $siteResourceImage := resources.GetMatch (printf "%s" ($defaultImageSetting.src | safeURL)) }}

            {{ if $siteResourceImage }}
                <!-- Try search image under site's assets folder -->
                {{ $result = merge $result (dict "permalink" $siteResourceImage.RelPermalink) }}
                {{ $result = merge $result (dict "resource" $siteResourceImage) }}
            {{ else }}
                <!-- Can not find the image -->
                {{ errorf "Failed loading image: %q" $defaultImageSetting.src }}
                {{ $result = merge $result (dict "exists" false) }}
            {{ end }}

        {{ else }}

            {{ $result = merge $result (dict "permalink" $defaultImageSetting.src) }}

        {{ end }}
    {{ end }}
{{ end }}

{{ return $result }}