fix: sanitize primary domain for orgs (#6125)

* fix: sanitize primary domain for orgs

* fix: add @stebenz requested changes

---------

Co-authored-by: Stefan Benz <46600784+stebenz@users.noreply.github.com>

internal/domain/org_domain_test.go

@@ -0,0 +1,90 @@
+package domain
+
+import (
+	"testing"
+)
+
+func TestNewIAMDomainName(t *testing.T) {
+	type args struct {
+		orgName   string
+		iamDomain string
+	}
+	tests := []struct {
+		name   string
+		args   args
+		result string
+	}{
+		{
+			name: "Single word domain is already valid",
+			args: args{
+				orgName:   "single-word-domain",
+				iamDomain: "localhost",
+			},
+			result: "single-word-domain.localhost",
+		},
+		{
+			name: "resulting domain should be in lowercase",
+			args: args{
+				orgName:   "Uppercase org Name",
+				iamDomain: "localhost",
+			},
+			result: "uppercase-org-name.localhost",
+		},
+		{
+			name: "replace spaces with hyphens",
+			args: args{
+				orgName:   "my org name",
+				iamDomain: "localhost",
+			},
+			result: "my-org-name.localhost",
+		},
+		{
+			name: "replace invalid characters [^a-zA-Z0-9-] with empty spaces",
+			args: args{
+				orgName:   "mí Örg name?",
+				iamDomain: "localhost",
+			},
+			result: "m-rg-name.localhost",
+		},
+		{
+			name: "label created from org name size is not greater than 63 chars",
+			args: args{
+				orgName:   "my organization name must not exceed sixty-three characters 1234",
+				iamDomain: "localhost",
+			},
+			result: "my-organization-name-must-not-exceed-sixty-three-characters-123.localhost",
+		},
+		{
+			name: "resulting domain cannot exceed 253 chars",
+			args: args{
+				orgName:   "Lorem ipsum dolor sit amet",
+				iamDomain: "llgwyngyllgogerychwyrndrobwllllantysiliogogogoch.llanfairpwllgwyngyllgogerychwyrndrobwllllantysiliogogogoch.llanfairpwllgwyngyllgogerychwyrndrobwllllantysiliogogogoch.llanfairpwllgwyngyllgogerychwyrndrobwllllantysiliogogogoch.co.uk",
+			},
+			result: "lorem-ipsum-dolor-sit.llgwyngyllgogerychwyrndrobwllllantysiliogogogoch.llanfairpwllgwyngyllgogerychwyrndrobwllllantysiliogogogoch.llanfairpwllgwyngyllgogerychwyrndrobwllllantysiliogogogoch.llanfairpwllgwyngyllgogerychwyrndrobwllllantysiliogogogoch.co.uk",
+		},
+		{
+			name: "label based on org name should not end with a hyphen",
+			args: args{
+				orgName:   "my super long organization name with many many many characters ",
+				iamDomain: "localhost",
+			},
+			result: "my-super-long-organization-name-with-many-many-many-characters.localhost",
+		},
+		{
+			name: "label based on org name should not start with a hyphen",
+			args: args{
+				orgName:   " my super long organization name with many many many characters",
+				iamDomain: "localhost",
+			},
+			result: "my-super-long-organization-name-with-many-many-many-characters.localhost",
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			domain := NewIAMDomainName(tt.args.orgName, tt.args.iamDomain)
+			if tt.result != domain {
+				t.Errorf("got wrong result: expected: %v, actual: %v ", tt.result, domain)
+			}
+		})
+	}
+}