Add Support for deleteDaysAfterCreation in Messages Configuration

Commercetools' [MessagesConfiguration](https://docs.commercetools.com/api/projects/project#messagesconfiguration)
allows to set `deleteDaysAfterCreation` to configure the message retention time.
The supported values are between 1 and 90 (inclusive).

Author: netlight-kato

commercetools/resource_project.go

@@ -9,6 +9,7 @@ import (
 	"github.com/hashicorp/terraform-plugin-sdk/v2/diag"
 	"github.com/hashicorp/terraform-plugin-sdk/v2/helper/resource"
 	"github.com/hashicorp/terraform-plugin-sdk/v2/helper/schema"
+	"github.com/hashicorp/terraform-plugin-sdk/v2/helper/validation"
 	"github.com/labd/commercetools-go-sdk/platform"
 )
 
@@ -89,6 +90,12 @@ func resourceProjectSettings() *schema.Resource {
 							Type:        schema.TypeBool,
 							Required:    true,
 						},
+						"delete_days_after_creation": {
+							Description:      "Specifies the number of days each Message should be available via the Messages Query API",
+							Type:             schema.TypeInt,
+							ValidateDiagFunc: validation.ToDiagFunc(validation.IntBetween(1, 90)),
+							Optional:         true,
+						},
 					},
 				},
 			},
@@ -310,6 +317,16 @@ func projectUpdate(ctx context.Context, d *schema.ResourceData, client *platform
 				})
 		}
 
+		if messages["delete_days_after_creation"] != nil {
+			input.Actions = append(
+				input.Actions,
+				&platform.ProjectChangeMessagesConfigurationAction{
+					MessagesConfiguration: platform.MessagesConfigurationDraft{
+						DeleteDaysAfterCreation: messages["delete_days_after_creation"].(int),
+					},
+				})
+			
+		}
 	}
 
 	if d.HasChange("shipping_rate_input_type") || d.HasChange("shipping_rate_cart_classification_value") {
@@ -526,6 +543,7 @@ func flattenProjectMessages(val platform.MessagesConfiguration, d *schema.Resour
 	return []map[string]any{
 		{
 			"enabled": val.Enabled,
+			"deleteDaysAfterCreation": val.DeleteDaysAfterCreation,
 		},
 	}
 }

commercetools/resource_project_test.go

@@ -58,6 +58,7 @@ func TestAccProjectCreate_basic(t *testing.T) {
 
 						assert.True(t, *result.Carts.CountryTaxRateFallbackEnabled)
 						assert.EqualValues(t, result.Messages.Enabled, true)
+						assert.EqualValues(t, result.Messages.DeleteDaysAfterCreation, 90)
 						assert.EqualValues(t, result.ExternalOAuth.Url, "https://example.com/oauth/token")
 						assert.EqualValues(t, result.ExternalOAuth.AuthorizationHeader, "****")
 						assert.EqualValues(t, result.Countries, []string{"NL", "DE", "US"})
@@ -77,6 +78,7 @@ func TestAccProjectCreate_basic(t *testing.T) {
 					resource.TestCheckResourceAttr(resourceName, "currencies.#", "3"),
 					resource.TestCheckResourceAttr(resourceName, "languages.#", "5"),
 					resource.TestCheckResourceAttr(resourceName, "messages.0.enabled", "false"),
+					resource.TestCheckResourceAttr(resourceName, "messages.0.deleteDaysAfterCreation", "15"),
 					resource.TestCheckResourceAttr(
 						resourceName, "external_oauth.0.url", "https://new-example.com/oauth/token"),
 					resource.TestCheckResourceAttr(
@@ -173,6 +175,7 @@ func testAccProjectConfig(identifier string) string {
 
 			messages {
 				enabled = true
+				deleteDaysAfterCreation = 90
 			}
 
 			carts {
@@ -199,6 +202,7 @@ func testAccProjectConfigUpdate(identifier string) string {
 			}
 			messages {
 				enabled = false
+				deleteDaysAfterCreation = 15
 			}
 
 			carts {