Add aws_amplify_app resource

.changelog/15966.txt

@@ -0,0 +1,3 @@
+```release-note:new-resource
+aws_amplify_app
+```

aws/internal/service/amplify/consts.go

@@ -0,0 +1,5 @@
+package amplify
+
+const (
+	StageNone = "NONE"
+)

aws/internal/service/amplify/finder/finder.go

@@ -0,0 +1,36 @@
+package finder
+
+import (
+	"github.com/aws/aws-sdk-go/aws"
+	"github.com/aws/aws-sdk-go/service/amplify"
+	"github.com/hashicorp/aws-sdk-go-base/tfawserr"
+	"github.com/hashicorp/terraform-plugin-sdk/v2/helper/resource"
+)
+
+func AppByID(conn *amplify.Amplify, id string) (*amplify.App, error) {
+	input := &amplify.GetAppInput{
+		AppId: aws.String(id),
+	}
+
+	output, err := conn.GetApp(input)
+
+	if tfawserr.ErrCodeEquals(err, amplify.ErrCodeNotFoundException) {
+		return nil, &resource.NotFoundError{
+			LastError:   err,
+			LastRequest: input,
+		}
+	}
+
+	if err != nil {
+		return nil, err
+	}
+
+	if output == nil || output.App == nil {
+		return nil, &resource.NotFoundError{
+			Message:     "Empty result",
+			LastRequest: input,
+		}
+	}
+
+	return output.App, nil
+}

aws/internal/service/amplify/lister/list.go

@@ -0,0 +1,3 @@
+//go:generate go run ../../../generators/listpages/main.go -function=ListApps github.com/aws/aws-sdk-go/service/amplify
+
+package lister

aws/provider.go

@@ -447,6 +447,7 @@ func Provider() *schema.Provider {
 			"aws_ami_copy":                                            resourceAwsAmiCopy(),
 			"aws_ami_from_instance":                                   resourceAwsAmiFromInstance(),
 			"aws_ami_launch_permission":                               resourceAwsAmiLaunchPermission(),
+			"aws_amplify_app":                                         resourceAwsAmplifyApp(),
 			"aws_api_gateway_account":                                 resourceAwsApiGatewayAccount(),
 			"aws_api_gateway_api_key":                                 resourceAwsApiGatewayApiKey(),
 			"aws_api_gateway_authorizer":                              resourceAwsApiGatewayAuthorizer(),