migration doc file is back and minor lint

docs/guides/v1-migration.md

@@ -0,0 +1,40 @@
+
+---
+page_title: "frontegg_migration-v0 Migration - V0 to V1 migration"
+subcategory: ""
+description: |-
+  Migration guide for the Frontegg provider from V0 to V1.
+---
+
+# V1 Migration Guide
+
+This guide will help you migrate from Frontegg's V0 to V1.
+
+> **This migration guide applies exclusively to users who have configured a custom domain with the provider.**
+## Provider Configuration
+
+> [!IMPORTANT]
+> If you update your provider without proceeding with following guide, you'll get an error when running `terraform apply`.
+### Custom Domains
+
+We've made a significant update to the provider configuration, introducing the `custom_domains` field to replace the previous `custom_domain` field. The `custom_domains` field now accepts a list of strings, allowing you to configure multiple custom domains for the Frontegg application.
+
+To implement this update, follow these steps:
+
+1. Navigate to [Frontegg Portal](https://portal.frontegg.com) and initiate the custom domain migration process.
+   > For more information, see [Frontegg's custom domain migration guide](https://docs.frontegg.com/docs/custom-domain-migration).
+   > [!WARNING]
+   > Once you've migrated to the new version, you'll need to update your configuration to use the new `custom_domains` field, or you'll get error when running `terraform apply`.
+2. Upon completion of the migration, you'll receive a list of custom domains available for use with the `custom_domains` field.
+3. Ensure you're using Provider version V1.
+4. Replace any instances of the old `custom_domain` field in your configuration (
+   <s>custom_domain = "https://yourcCustomDomain.com"</s>) with the new `custom_domains` field. Populate it with the list of custom domains as follows:
+
+```hcl
+custom_domains = [
+  "https://yourcCustomDomain.com",
+  "https://yourcCustomDomain2.com"
+]
+```
+
+[Frontegg]: https://frontegg.com

docs/resources/email_provider.md

@@ -17,7 +17,7 @@ Configures a Frontegg Email provider.
 
 ### Required
 
-- `provider_name` (String) Name of the email provider.
+- `provider_name` (String) Name of the email provider (If the provider is changed, the old provider's configuration will be deleted).
 - `secret` (String) A secret to be included with the event.
 
 ### Optional

provider/resource_frontegg_email_providers.go

@@ -73,7 +73,7 @@ func resourceFronteggEmailProvider() *schema.Resource {
 				Required:    true,
 			},
 			"provider_name": {
-				Description:  "Name of the email provider.",
+				Description:  "Name of the email provider (If the provider is changed, the old provider's configuration will be deleted).",
 				Type:         schema.TypeString,
 				Required:     true,
 				ValidateFunc: validators.ValidateProvider,

provider/validators/validator_email_providers.go

@@ -25,7 +25,7 @@ func ValidateProvider(val interface{}, key string) (warns []string, errs []error
 	if !contain {
 		errs = append(errs, fmt.Errorf("%q must be either %v ,got: %s", key, strings.Join(ps, ", "), v))
 	}
-	return
+	return warns, errs
 }
 
 func ValidateRequiredFields(ctx context.Context, rd *schema.ResourceDiff, i interface{}) error {