feat: refactor resource schema handling and add plan modifiers configuration

stackit/internal/services/sqlserverflexbeta/user/planModifiers.yaml

@@ -0,0 +1,51 @@
+fields:
+  - name: 'id'
+    modifiers:
+      - 'UseStateForUnknown'
+
+  - name: 'user_id'
+    modifiers:
+      - 'UseStateForUnknown'
+
+  - name: 'instance_id'
+    validators:
+      - validate.NoSeparator
+      - validate.UUID
+    modifiers:
+      - 'UseStateForUnknown'
+
+  - name: 'project_id'
+    validators:
+      - validate.NoSeparator
+      - validate.UUID
+    modifiers:
+      - 'UseStateForUnknown'
+      - 'RequiresReplace'
+
+  - name: 'region'
+    modifiers:
+      - 'RequiresReplace'
+
+  - name: 'user_id'
+    modifiers:
+      - 'RequiresReplace'
+
+  - name: 'username'
+    modifiers:
+      - 'UseStateForUnknown'
+
+  - name: 'roles'
+    modifiers:
+      - 'UseStateForUnknown'
+
+  - name: 'password'
+    modifiers:
+      - 'UseStateForUnknown'
+
+  - name: 'uri'
+    modifiers:
+      - 'UseStateForUnknown'
+
+  - name: 'status'
+    modifiers:
+      - 'UseStateForUnknown'

stackit/internal/services/sqlserverflexbeta/user/resource.go

@@ -2,6 +2,7 @@ package sqlserverflexbeta
 
 import (
 	"context"
+	_ "embed"
 	"fmt"
 	"strconv"
 	"strings"
@@ -12,9 +13,8 @@ import (
 	"github.com/hashicorp/terraform-plugin-framework/types"
 	"github.com/hashicorp/terraform-plugin-log/tflog"
 	"github.com/stackitcloud/stackit-sdk-go/core/config"
-	"tf-provider.git.onstackit.cloud/stackit-dev-tools/terraform-provider-stackitprivatepreview/stackit/internal/conversion"
-
 	"tf-provider.git.onstackit.cloud/stackit-dev-tools/terraform-provider-stackitprivatepreview/pkg_gen/sqlserverflexbeta"
+	"tf-provider.git.onstackit.cloud/stackit-dev-tools/terraform-provider-stackitprivatepreview/stackit/internal/conversion"
 
 	"tf-provider.git.onstackit.cloud/stackit-dev-tools/terraform-provider-stackitprivatepreview/stackit/internal/core"
 	"tf-provider.git.onstackit.cloud/stackit-dev-tools/terraform-provider-stackitprivatepreview/stackit/internal/utils"
@@ -54,8 +54,25 @@ func (r *userResource) Metadata(ctx context.Context, req resource.MetadataReques
 	resp.TypeName = req.ProviderTypeName + "_sqlserverflexbeta_user"
 }
 
-func (r *userResource) Schema(ctx context.Context, req resource.SchemaRequest, resp *resource.SchemaResponse) {
-	resp.Schema = sqlserverflexbetaResGen.UserResourceSchema(ctx)
+//go:embed planModifiers.yaml
+var modifiersFileByte []byte
+
+func (r *userResource) Schema(ctx context.Context, _ resource.SchemaRequest, resp *resource.SchemaResponse) {
+
+	s := sqlserverflexbetaResGen.UserResourceSchema(ctx)
+
+	fields, err := utils.ReadModifiersConfig(modifiersFileByte)
+	if err != nil {
+		resp.Diagnostics.AddError("error during read modifiers config file", err.Error())
+		return
+	}
+
+	err = utils.AddPlanModifiersToResourceSchema(fields, &s)
+	if err != nil {
+		resp.Diagnostics.AddError("error adding plan modifiers", err.Error())
+		return
+	}
+	resp.Schema = s
 }
 
 func (r *userResource) IdentitySchema(