new way of doin

helm-charts/dashy/charts/common/templates/lib/imagePullSecret/_createData.tpl

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+{{/* Configmap Validation */}}
+{{/* Call this template:
+{{ include "tc.v1.common.lib.imagePullSecret.createData" (dict "objectData" $objectData "root" $rootCtx) -}}
+rootCtx: The root context of the chart.
+objectData:
+  data: The data of the imagePullSecret.
+*/}}
+
+{{- define "tc.v1.common.lib.imagePullSecret.createData" -}}
+  {{- $objectData := .objectData -}}
+  {{- $rootCtx := .rootCtx -}}
+
+  {{- $registrySecret := dict -}}
+
+  {{/* Auth is b64encoded and then the whole secret is b64encoded */}}
+  {{- $auth := printf "%s:%s" (tpl $objectData.data.username $rootCtx) (tpl $objectData.data.password $rootCtx) | b64enc -}}
+
+  {{- $registry := dict -}}
+  {{- with $objectData.data -}}
+    {{- $registry = (dict "username" (tpl .username $rootCtx) "password" (tpl .password $rootCtx)
+                            "email" (tpl .email $rootCtx) "auth" $auth) -}}
+  {{- end -}}
+
+  {{- $registryKey := tpl $objectData.data.registry $rootCtx -}}
+  {{- $_ := set $registrySecret "auths" (dict $registryKey $registry) -}}
+
+  {{/*
+  This should result in something like this:
+    {
+      "auths": {
+        "$registry": {
+          "username": "$username",
+          "password": "$password",
+          "email": "$email",
+          "auth": "($username:$password) base64"
+        }
+      }
+}
+*/}}
+
+  {{/* Return the registrySecret as Json */}}
+  {{- $registrySecret | toJson -}}
+{{- end -}}

helm-charts/dashy/charts/common/templates/lib/imagePullSecret/_validation.tpl

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+{{/* Configmap Validation */}}
+{{/* Call this template:
+{{ include "tc.v1.common.lib.imagePullSecret.validation" (dict "objectData" $objectData) -}}
+objectData:
+  labels: The labels of the imagePullSecret.
+  annotations: The annotations of the imagePullSecret.
+  data: The data of the imagePullSecret.
+*/}}
+
+{{- define "tc.v1.common.lib.imagePullSecret.validation" -}}
+  {{- $objectData := .objectData -}}
+
+  {{- if not $objectData.data -}}
+    {{- fail "Image Pull Secret - Expected non-empty <data>" -}}
+  {{- end -}}
+
+  {{- if not (kindIs "map" $objectData.data) -}}
+    {{- fail (printf "Image Pull Secret - Expected <data> to be a dictionary, but got [%v]" (kindOf $objectData.data)) -}}
+  {{- end -}}
+
+  {{- range $key := (list "username" "password" "registry" "email") -}}
+    {{- if not (get $objectData.data $key) -}}
+      {{- fail (printf "Image Pull Secret - Expected non-empty <%s>" $key) -}}
+    {{- end -}}
+  {{- end -}}
+
+{{- end -}}