avoid duplicated PVC value: only one pvc of the same namespace/name will be created but multiple can be reused

module.tf

@@ -22,6 +22,7 @@ variable "kubernetes" {
       annotations_fileType = optional(string)
       existing_pvc         = optional(bool, false)
       mount_path           = string
+      sub_path 		   = optional(string)
     })))
     environment = optional(map(object({
       name  = optional(string)
@@ -65,9 +66,10 @@ variable "kubernetes" {
 }
 
 locals {
-  pvc_details = flatten([
+  pvc_list = flatten([
     for key, value in var.kubernetes : [
       for index, pvc in value.pvc : {
+        key                  = "${coalesce(value.namespace, value.connected_namespace, key)}/${pvc.name}"
         index                = index
         pvc                  = pvc.pvc
         name                 = pvc.name
@@ -76,9 +78,24 @@ locals {
         storage_class_name   = pvc.storage_class_name
         annotations_fileType = pvc.annotations_fileType
         existing_pvc         = pvc.existing_pvc
+        sub_path             = pvc.sub_path
         namespace            = coalesce(value.namespace, value.connected_namespace, key)
     }] if value.enabled == true && value.pvc != null
   ])
+  
+ # group duplicates instead of throwing an error
+  pvc_map_grouped = {
+    for p in local.pvc_list :
+    p.key => p...
+  }
+
+  # keep only one PVC per key (take the first)
+  pvc_map = {
+    for k, list in local.pvc_map_grouped :
+    k => list[0]
+  }
+
+  pvc_details = values(local.pvc_map)
 }
 
 locals {
@@ -332,6 +349,7 @@ resource "kubernetes_deployment_v1" "automatic" {
             content {
               mount_path = volume_mount.value.mount_path
               name       = "${volume_mount.value.name}-pvc"
+              sub_path = volume_mount.value.sub_path != null ? volume_mount.value.sub_path : ""
             }
           }