feat: add notification policy and password change message (#5065)

Implementation of new notification policy with functionality to send email when a password is changed

internal/repository/policy/policy_notification.go

@@ -0,0 +1,127 @@
+package policy
+
+import (
+	"encoding/json"
+
+	"github.com/zitadel/zitadel/internal/errors"
+	"github.com/zitadel/zitadel/internal/eventstore"
+	"github.com/zitadel/zitadel/internal/eventstore/repository"
+)
+
+const (
+	NotificationPolicyAddedEventType   = "policy.notification.added"
+	NotificationPolicyChangedEventType = "policy.notification.changed"
+	NotificationPolicyRemovedEventType = "policy.notification.removed"
+)
+
+type NotificationPolicyAddedEvent struct {
+	eventstore.BaseEvent `json:"-"`
+
+	PasswordChange bool `json:"passwordChange,omitempty"`
+}
+
+func (e *NotificationPolicyAddedEvent) Data() interface{} {
+	return e
+}
+
+func (e *NotificationPolicyAddedEvent) UniqueConstraints() []*eventstore.EventUniqueConstraint {
+	return nil
+}
+
+func NewNotificationPolicyAddedEvent(
+	base *eventstore.BaseEvent,
+	passwordChange bool,
+) *NotificationPolicyAddedEvent {
+	return &NotificationPolicyAddedEvent{
+		BaseEvent:      *base,
+		PasswordChange: passwordChange,
+	}
+}
+
+func NotificationPolicyAddedEventMapper(event *repository.Event) (eventstore.Event, error) {
+	e := &NotificationPolicyAddedEvent{
+		BaseEvent: *eventstore.BaseEventFromRepo(event),
+	}
+
+	err := json.Unmarshal(event.Data, e)
+	if err != nil {
+		return nil, errors.ThrowInternal(err, "POLIC-0sp2nios", "unable to unmarshal policy")
+	}
+
+	return e, nil
+}
+
+type NotificationPolicyChangedEvent struct {
+	eventstore.BaseEvent `json:"-"`
+
+	PasswordChange *bool `json:"passwordChange,omitempty"`
+}
+
+func (e *NotificationPolicyChangedEvent) Data() interface{} {
+	return e
+}
+
+func (e *NotificationPolicyChangedEvent) UniqueConstraints() []*eventstore.EventUniqueConstraint {
+	return nil
+}
+
+func NewNotificationPolicyChangedEvent(
+	base *eventstore.BaseEvent,
+	changes []NotificationPolicyChanges,
+) (*NotificationPolicyChangedEvent, error) {
+	if len(changes) == 0 {
+		return nil, errors.ThrowPreconditionFailed(nil, "POLICY-09sp2m", "Errors.NoChangesFound")
+	}
+	changeEvent := &NotificationPolicyChangedEvent{
+		BaseEvent: *base,
+	}
+	for _, change := range changes {
+		change(changeEvent)
+	}
+	return changeEvent, nil
+}
+
+type NotificationPolicyChanges func(*NotificationPolicyChangedEvent)
+
+func ChangePasswordChange(passwordChange bool) func(*NotificationPolicyChangedEvent) {
+	return func(e *NotificationPolicyChangedEvent) {
+		e.PasswordChange = &passwordChange
+	}
+}
+
+func NotificationPolicyChangedEventMapper(event *repository.Event) (eventstore.Event, error) {
+	e := &NotificationPolicyChangedEvent{
+		BaseEvent: *eventstore.BaseEventFromRepo(event),
+	}
+
+	err := json.Unmarshal(event.Data, e)
+	if err != nil {
+		return nil, errors.ThrowInternal(err, "POLIC-09s2oss", "unable to unmarshal policy")
+	}
+
+	return e, nil
+}
+
+type NotificationPolicyRemovedEvent struct {
+	eventstore.BaseEvent `json:"-"`
+}
+
+func (e *NotificationPolicyRemovedEvent) Data() interface{} {
+	return nil
+}
+
+func (e *NotificationPolicyRemovedEvent) UniqueConstraints() []*eventstore.EventUniqueConstraint {
+	return nil
+}
+
+func NewNotificationPolicyRemovedEvent(base *eventstore.BaseEvent) *NotificationPolicyRemovedEvent {
+	return &NotificationPolicyRemovedEvent{
+		BaseEvent: *base,
+	}
+}
+
+func NotificationPolicyRemovedEventMapper(event *repository.Event) (eventstore.Event, error) {
+	return &NotificationPolicyRemovedEvent{
+		BaseEvent: *eventstore.BaseEventFromRepo(event),
+	}, nil
+}