chore(common): normalize ingress paths earlier (#29817)

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⚒️ Fixes  # <!--(issue)-->

**⚙️ Type of change**

- [ ] ⚙️ Feature/App addition
- [ ] 🪛 Bugfix
- [ ] ⚠️ Breaking change (fix or feature that would cause existing
functionality to not work as expected)
- [x] 🔃 Refactor of current code

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**✔️ Checklist:**

- [x] ⚖️ My code follows the style guidelines of this project
- [x] 👀 I have performed a self-review of my own code
- [ ] #️⃣ I have commented my code, particularly in hard-to-understand
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- [ ] 📄 I have made corresponding changes to the documentation
- [x] ⚠️ My changes generate no new warnings
- [x] 🧪 I have added tests to this description that prove my fix is
effective or that my feature works
- [x] ⬆️ I increased versions for any altered app according to semantic
versioning
- [x] I made sure the title starts with `feat(chart-name):`,
`fix(chart-name):` or `chore(chart-name):`

**➕ App addition**

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following.

- [ ] 🖼️ I have added an icon in the Chart's root directory called
`icon.png`

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charts/library/common-test/tests/ingress/homepage_test.yaml

@@ -110,6 +110,14 @@ tests:
                     value: some-other-value-slice
                   - key: some-empty-key-slice
                     value: ""
+        my-ingress5:
+          enabled: true
+          integrations:
+            traefik: *traefik
+            homepage:
+              enabled: true
+          hosts:
+            - host: no-paths-host
     asserts:
       - documentIndex: &ingressDoc 2
         isKind:
@@ -207,6 +215,19 @@ tests:
             gethomepage.dev/href: https://test-host/test-path
             gethomepage.dev/icon: https://truecharts.org/img/hotlink-ok/chart-icons/common-test.webp
             gethomepage.dev/pod-selector: app.kubernetes.io/instance=test-release-name,pod.lifecycle in (permanent)
+      - documentIndex: &fifthIngressDoc 6
+        isKind:
+          of: Ingress
+      - documentIndex: *fifthIngressDoc
+        isSubset:
+          path: metadata.annotations
+          content:
+            gethomepage.dev/enabled: "true"
+            gethomepage.dev/name: TestReleaseName
+            gethomepage.dev/description: Helper chart to test different use cases of the common library
+            gethomepage.dev/href: https://no-paths-host/
+            gethomepage.dev/icon: https://truecharts.org/img/hotlink-ok/chart-icons/common-test.webp
+            gethomepage.dev/pod-selector: app.kubernetes.io/instance=test-release-name,pod.lifecycle in (permanent)
 
   # Failures
   - it: should fail with podSelector not a slice

charts/library/common-test/tests/ingress/rules_test.yaml

@@ -208,6 +208,7 @@ tests:
                   overrideService:
                     name: other-service
                     port: 8080
+            - host: host-no-paths
           integrations: *integrations
     asserts:
       - documentIndex: &ingressDoc 2
@@ -248,3 +249,14 @@ tests:
                         name: test-release-name-common-test-other-service
                         port:
                           number: 8080
+
+            - host: host-no-paths
+              http:
+                paths:
+                  - path: /
+                    pathType: Prefix
+                    backend:
+                      service:
+                        name: test-release-name-common-test-my-service2
+                        port:
+                          number: 9000

charts/library/common/templates/class/_ingress.tpl

@@ -26,6 +26,19 @@ objectData: The object data to be used to render the Ingress.
     {{- $ingressClassName = (tpl $objectData.ingressClassName $rootCtx) -}}
   {{- end -}}
 
+  {{- range $h := $objectData.hosts -}}
+    {{- $_ := set $h "host" (tpl $h.host $rootCtx) -}}
+
+    {{- if not $h.paths -}} {{/* If no paths given, default to "/" */}}
+      {{- $_ := set $h "paths" (list (dict "path" "/")) -}}
+    {{- end -}}
+
+    {{- range $p := $h.paths -}}
+      {{- $_ := set $p "path" (tpl ($p.path | default "/") $rootCtx) -}}
+      {{- $_ := set $p "pathType" (tpl ($p.pathType | default "Prefix") $rootCtx) -}}
+    {{- end -}}
+  {{- end -}}
+
   {{/* When Stop All is set, force ingressClass "stopped"
   to yeet ingress from the ingresscontroller */}}
   {{- if (include "tc.v1.common.lib.util.stopAll" $rootCtx) -}}
@@ -59,18 +72,15 @@ spec:
   ingressClassName: {{ $ingressClassName | default nil }}
   rules:
     {{- range $h := $objectData.hosts }}
-    - host: {{ (tpl $h.host $rootCtx) | quote }}
+    - host: {{ $h.host | quote }}
       http:
         paths:
-          {{- if not $h.paths -}} {{/* If no paths given, default to "/" */}}
-            {{- $_ := set $h "paths" (list (dict "path" "/")) -}}
-          {{- end -}}
           {{- range $p := $h.paths -}}
             {{- $newSvcData := (include "tc.v1.common.lib.ingress.backend.data" (dict
                 "rootCtx" $rootCtx "svcData" $svcData "override" $p.overrideService)) | fromYaml
             }}
-          - path: {{ tpl ($p.path | default "/") $rootCtx }}
-            pathType: {{ tpl ($p.pathType | default "Prefix") $rootCtx }}
+          - path: {{ $p.path }}
+            pathType: {{ $p.pathType }}
             backend:
               service:
                 name: {{ $newSvcData.name }}