From a120f803ab68c0009484353ab1ed09b744bc3438 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Micha=C3=ABl=20Petrov?= <smartptr@gmail.com>
Date: Sat, 12 Apr 2025 19:30:26 +0200
Subject: [PATCH 1/3] rename kubeconfig contexts for easier merge

---
 scripts/dev/infra-sync.sh            |  2 +-
 scripts/dev/rename-kubeconfig-ctx.jq | 60 ++++++++++++++++++++++++++++
 2 files changed, 61 insertions(+), 1 deletion(-)
 create mode 100644 scripts/dev/rename-kubeconfig-ctx.jq

diff --git a/scripts/dev/infra-sync.sh b/scripts/dev/infra-sync.sh
index 0fa38f6..a069c67 100755
--- a/scripts/dev/infra-sync.sh
+++ b/scripts/dev/infra-sync.sh
@@ -94,7 +94,7 @@ kubecfg_merge() {
 
     echo "Merging kube configurations into ${infra_kubeconfig}"
     tmp_infra_kubeconfig=$(mktemp)
-    kubectl config view --flatten > "${tmp_infra_kubeconfig}"
+    kubectl config view --flatten -o json | jq -f rename-kubeconfig-ctx.jq > "${tmp_infra_kubeconfig}"
     mv "${tmp_infra_kubeconfig}" "${infra_kubeconfig}"
 }
 
diff --git a/scripts/dev/rename-kubeconfig-ctx.jq b/scripts/dev/rename-kubeconfig-ctx.jq
new file mode 100644
index 0000000..2c05c6b
--- /dev/null
+++ b/scripts/dev/rename-kubeconfig-ctx.jq
@@ -0,0 +1,60 @@
+. as $cfg
+| (
+  # Build context_map as an array of objects with name transformations.
+  $cfg.contexts
+  | map({
+      old_name: .name,
+      cluster: .context.cluster,
+      old_user: .context.user,
+      new_name: .context.cluster,
+      new_user: (.context.user + "@" + .context.cluster)
+    })
+) as $context_map
+# Reconstruct the config from scratch.
+| {
+  kind: $cfg.kind,
+  apiVersion: $cfg.apiVersion,
+  preferences: $cfg.preferences,
+  clusters: $cfg.clusters,
+  contexts: (
+    $context_map
+    | map({
+        name: .new_name,
+        context: {
+          cluster: .cluster,
+          user: .new_user
+        }
+      })
+  ),
+  users: (
+    $cfg.users
+    | map(
+        . as $user
+        | (
+            $context_map
+            | map(select(.old_user == $user.name))
+            | if length > 0 then
+                {
+                  name: .[0].new_user,
+                  user: $user.user
+                }
+              else
+                $user
+              end
+          )
+      )
+  ),
+}
+# Conditionally include current-context if it existed originally.
+| if $cfg | has("current-context") then
+  . + {
+    "current-context": (
+      $cfg["current-context"] as $curr
+      | $context_map
+      | map(select(.old_name == $curr))
+      | if length > 0 then .[0].new_name else $curr end
+    )
+  }
+else .
+end
+

From 8205d57d7f917997d0510cd0318dd365110d277f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Micha=C3=ABl=20Petrov?= <smartptr@gmail.com>
Date: Mon, 14 Apr 2025 07:12:36 +0200
Subject: [PATCH 2/3] add shebang to rename-kubeconfig-ctx.jq

---
 scripts/dev/rename-kubeconfig-ctx.jq | 1 +
 1 file changed, 1 insertion(+)
 mode change 100644 => 100755 scripts/dev/rename-kubeconfig-ctx.jq

diff --git a/scripts/dev/rename-kubeconfig-ctx.jq b/scripts/dev/rename-kubeconfig-ctx.jq
old mode 100644
new mode 100755
index 2c05c6b..cb34750
--- a/scripts/dev/rename-kubeconfig-ctx.jq
+++ b/scripts/dev/rename-kubeconfig-ctx.jq
@@ -1,3 +1,4 @@
+#!/usr/bin/env -S jq -f
 . as $cfg
 | (
   # Build context_map as an array of objects with name transformations.

From 75113cdc3bf190fc65115f1a41b8c6b9d53c348f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Micha=C3=ABl=20Petrov?= <smartptr@gmail.com>
Date: Mon, 14 Apr 2025 07:20:07 +0200
Subject: [PATCH 3/3] Do not append cluster name twice

---
 scripts/dev/rename-kubeconfig-ctx.jq | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/scripts/dev/rename-kubeconfig-ctx.jq b/scripts/dev/rename-kubeconfig-ctx.jq
index cb34750..e3a8423 100755
--- a/scripts/dev/rename-kubeconfig-ctx.jq
+++ b/scripts/dev/rename-kubeconfig-ctx.jq
@@ -1,4 +1,11 @@
 #!/usr/bin/env -S jq -f
+#
+# Pass JSON kubeconfig to this jq script to rename
+# the contexts to the referenced cluster names,
+# and the cluster names to the referenced user names.
+# This should help to merge kubeconfigs with non-unique
+# contexts and user names.
+#
 . as $cfg
 | (
   # Build context_map as an array of objects with name transformations.
@@ -8,7 +15,11 @@
       cluster: .context.cluster,
       old_user: .context.user,
       new_name: .context.cluster,
-      new_user: (.context.user + "@" + .context.cluster)
+      new_user: (.context as $ctx
+        | .context.user
+        | (if endswith($ctx.cluster)
+           then . else (. + "@" + $ctx.cluster) end)
+      )
     })
 ) as $context_map
 # Reconstruct the config from scratch.