Create basic scripts to generate JSONs from images

layouts/partials/albums/albums.json

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+{{- $first := true -}}
+{{- range .Pages.ByTitle -}}
+{{- if not $first }}, {{ end }}
+{{ $first = false -}}
+{
+    "title": "{{ .Title }}",
+{{- with .Resources.GetMatch "album.zip" }}
+    "albumDownload": "{{ .RelPermalink }}",
+{{ else -}}
+{{ warnf "Could not find album.zip for %s" .RelPermalink -}}
+{{ end -}}
+    "images": [{{ partial "albums/images.json" . }}],
+    "albums": [{{ partial "albums/albums.json" . }}]
+}
+{{ end -}}

layouts/partials/albums/images.json

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+{{- $first := true -}}
+{{- range .Resources.ByType "image" -}}
+{{- if not $first }}, {{ end }}
+{{ $first = false -}}
+{
+    "title": "{{ .Title }}",
+    "url": "{{ .RelPermalink }}",
+    "width": "{{ .Width }}",
+    "height": "{{ .Height }}",
+    "thumbnail": "{{ (.Fit "200x200").RelPermalink }}"
+}
+{{ end -}}