feat: Private label email policy (#813)

* Label Policy added

* save

* chore: update docs action

* Save

* Save

* Get colors from DB

* Variables inserted

* Get images from global directory.

* Add tests

* Add tests

* Corrections from mergerequest

* Corrections from mergerequest

* Test corrected.

* Added colors to all notifications.

* Added colors to
Corrected text and formatting.all notifications.

* Spelling error corrected.

* fix: tests

* Merge Branch corrected.

* Step6 added

* Corrections from mergerequest

* fix: generate management

* Formatted texts.

* fix: migrations

Co-authored-by: Florian Forster <florian@caos.ch>
Co-authored-by: adlerhurst <silvan.reusser@gmail.com>
Co-authored-by: Fabiennne <fabienne.gerschwiler@gmail.com>

internal/notification/types/email_verification_code.go

@@ -1,13 +1,15 @@
 package types
 
 import (
+	"net/http"
+
 	"github.com/caos/zitadel/internal/config/systemdefaults"
 	"github.com/caos/zitadel/internal/crypto"
 	"github.com/caos/zitadel/internal/i18n"
+	iam_model "github.com/caos/zitadel/internal/iam/model"
 	"github.com/caos/zitadel/internal/notification/templates"
 	es_model "github.com/caos/zitadel/internal/user/repository/eventsourcing/model"
 	view_model "github.com/caos/zitadel/internal/user/repository/view/model"
-	"net/http"
 )
 
 type EmailVerificationCodeData struct {
@@ -15,7 +17,7 @@ type EmailVerificationCodeData struct {
 	URL string
 }
 
-func SendEmailVerificationCode(dir http.FileSystem, i18n *i18n.Translator, user *view_model.NotifyUser, code *es_model.EmailCode, systemDefaults systemdefaults.SystemDefaults, alg crypto.EncryptionAlgorithm) error {
+func SendEmailVerificationCode(dir http.FileSystem, i18n *i18n.Translator, user *view_model.NotifyUser, code *es_model.EmailCode, systemDefaults systemdefaults.SystemDefaults, alg crypto.EncryptionAlgorithm, colors *iam_model.LabelPolicyView) error {
 	codeString, err := crypto.DecryptString(code.Code, alg)
 	if err != nil {
 		return err
@@ -32,6 +34,9 @@ func SendEmailVerificationCode(dir http.FileSystem, i18n *i18n.Translator, user
 	systemDefaults.Notifications.TemplateData.VerifyEmail.Translate(i18n, args, user.PreferredLanguage)
 	emailCodeData := &EmailVerificationCodeData{TemplateData: systemDefaults.Notifications.TemplateData.VerifyEmail, URL: url}
 
+	// Set the color in initCodeData
+	emailCodeData.PrimaryColor = colors.PrimaryColor
+	emailCodeData.SecondaryColor = colors.SecondaryColor
 	template, err := templates.GetParsedTemplate(dir, emailCodeData)
 	if err != nil {
 		return err

internal/notification/types/init_code.go

@@ -1,13 +1,15 @@
 package types
 
 import (
+	"net/http"
+
 	"github.com/caos/zitadel/internal/config/systemdefaults"
 	"github.com/caos/zitadel/internal/crypto"
 	"github.com/caos/zitadel/internal/i18n"
+	iam_model "github.com/caos/zitadel/internal/iam/model"
 	"github.com/caos/zitadel/internal/notification/templates"
 	es_model "github.com/caos/zitadel/internal/user/repository/eventsourcing/model"
 	view_model "github.com/caos/zitadel/internal/user/repository/view/model"
-	"net/http"
 )
 
 type InitCodeEmailData struct {
@@ -21,7 +23,7 @@ type UrlData struct {
 	PasswordSet bool
 }
 
-func SendUserInitCode(dir http.FileSystem, i18n *i18n.Translator, user *view_model.NotifyUser, code *es_model.InitUserCode, systemDefaults systemdefaults.SystemDefaults, alg crypto.EncryptionAlgorithm) error {
+func SendUserInitCode(dir http.FileSystem, i18n *i18n.Translator, user *view_model.NotifyUser, code *es_model.InitUserCode, systemDefaults systemdefaults.SystemDefaults, alg crypto.EncryptionAlgorithm, colors *iam_model.LabelPolicyView) error {
 	codeString, err := crypto.DecryptString(code.Code, alg)
 	if err != nil {
 		return err
@@ -39,6 +41,9 @@ func SendUserInitCode(dir http.FileSystem, i18n *i18n.Translator, user *view_mod
 	systemDefaults.Notifications.TemplateData.InitCode.Translate(i18n, args, user.PreferredLanguage)
 	initCodeData := &InitCodeEmailData{TemplateData: systemDefaults.Notifications.TemplateData.InitCode, URL: url}
 
+	// Set the color in initCodeData
+	initCodeData.PrimaryColor = colors.PrimaryColor
+	initCodeData.SecondaryColor = colors.SecondaryColor
 	template, err := templates.GetParsedTemplate(dir, initCodeData)
 	if err != nil {
 		return err

internal/notification/types/password_code.go

@@ -1,13 +1,15 @@
 package types
 
 import (
+	"net/http"
+
 	"github.com/caos/zitadel/internal/config/systemdefaults"
 	"github.com/caos/zitadel/internal/crypto"
 	"github.com/caos/zitadel/internal/i18n"
+	iam_model "github.com/caos/zitadel/internal/iam/model"
 	"github.com/caos/zitadel/internal/notification/templates"
 	es_model "github.com/caos/zitadel/internal/user/repository/eventsourcing/model"
 	view_model "github.com/caos/zitadel/internal/user/repository/view/model"
-	"net/http"
 )
 
 type PasswordCodeData struct {
@@ -17,7 +19,7 @@ type PasswordCodeData struct {
 	URL       string
 }
 
-func SendPasswordCode(dir http.FileSystem, i18n *i18n.Translator, user *view_model.NotifyUser, code *es_model.PasswordCode, systemDefaults systemdefaults.SystemDefaults, alg crypto.EncryptionAlgorithm) error {
+func SendPasswordCode(dir http.FileSystem, i18n *i18n.Translator, user *view_model.NotifyUser, code *es_model.PasswordCode, systemDefaults systemdefaults.SystemDefaults, alg crypto.EncryptionAlgorithm, colors *iam_model.LabelPolicyView) error {
 	codeString, err := crypto.DecryptString(code.Code, alg)
 	if err != nil {
 		return err
@@ -34,6 +36,9 @@ func SendPasswordCode(dir http.FileSystem, i18n *i18n.Translator, user *view_mod
 	systemDefaults.Notifications.TemplateData.PasswordReset.Translate(i18n, args, user.PreferredLanguage)
 	passwordCodeData := &PasswordCodeData{TemplateData: systemDefaults.Notifications.TemplateData.PasswordReset, FirstName: user.FirstName, LastName: user.LastName, URL: url}
 
+	// Set the color in initCodeData
+	passwordCodeData.PrimaryColor = colors.PrimaryColor
+	passwordCodeData.SecondaryColor = colors.SecondaryColor
 	template, err := templates.GetParsedTemplate(dir, passwordCodeData)
 	if err != nil {
 		return err

internal/notification/types/user_email.go

@@ -1,6 +1,8 @@
 package types
 
 import (
+	"html"
+
 	"github.com/caos/zitadel/internal/config/systemdefaults"
 	caos_errs "github.com/caos/zitadel/internal/errors"
 	"github.com/caos/zitadel/internal/notification/providers"
@@ -14,6 +16,7 @@ func generateEmail(user *view_model.NotifyUser, subject, content string, config
 	if err != nil {
 		return err
 	}
+	content = html.UnescapeString(content)
 	message := &email.EmailMessage{
 		SenderEmail: config.Providers.Email.From,
 		Recipients:  []string{user.VerifiedEmail},