stages/email: add support for custom template to API

Signed-off-by: Jens Langhammer <jens.langhammer@beryju.org>

authentik/stages/email/api.py

@@ -1,8 +1,18 @@
 """EmailStage API Views"""
+from drf_yasg.utils import swagger_auto_schema
+from rest_framework.decorators import action
+from rest_framework.request import Request
+from rest_framework.response import Response
+from rest_framework.serializers import ValidationError
 from rest_framework.viewsets import ModelViewSet
 
+from authentik.core.api.utils import TypeCreateSerializer
 from authentik.flows.api.stages import StageSerializer
-from authentik.stages.email.models import EmailStage, get_template_choices
+from authentik.stages.email.models import (
+    EmailStage,
+    EmailTemplates,
+    get_template_choices,
+)
 
 
 class EmailStageSerializer(StageSerializer):
@@ -12,6 +22,13 @@ class EmailStageSerializer(StageSerializer):
         super().__init__(*args, **kwargs)
         self.fields["template"].choices = get_template_choices()
 
+    def validate_template(self, value: str) -> str:
+        choices = get_template_choices()
+        for path, _ in choices:
+            if path == value:
+                return value
+        raise ValidationError(f"Invalid template '{value}' specified.")
+
     class Meta:
 
         model = EmailStage
@@ -39,3 +56,17 @@ class EmailStageViewSet(ModelViewSet):
     serializer_class = EmailStageSerializer
 
     # TODO: Validate connection settings when use_global_settings is unchecked
+    @swagger_auto_schema(responses={200: TypeCreateSerializer(many=True)})
+    @action(detail=False, pagination_class=None, filter_backends=[])
+    def templates(self, request: Request) -> Response:
+        """Get all available templates, including custom templates"""
+        choices = []
+        for value, label in get_template_choices():
+            choices.append(
+                {
+                    "name": value,
+                    "description": label,
+                    "component": "",
+                }
+            )
+        return Response(TypeCreateSerializer(choices, many=True).data)

authentik/stages/email/migrations/0003_auto_20210404_1054.py

@@ -0,0 +1,18 @@
+# Generated by Django 3.1.7 on 2021-04-04 10:54
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("authentik_stages_email", "0002_emailstage_use_global_settings"),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name="emailstage",
+            name="template",
+            field=models.TextField(default="email/password_reset.html"),
+        ),
+    ]

authentik/stages/email/models.py

@@ -78,9 +78,7 @@ class EmailStage(Stage):
         default=30, help_text=_("Time in minutes the token sent is valid.")
     )
     subject = models.TextField(default="authentik")
-    template = models.TextField(
-        choices=get_template_choices(), default=EmailTemplates.PASSWORD_RESET
-    )
+    template = models.TextField(default=EmailTemplates.PASSWORD_RESET)
 
     @property
     def serializer(self) -> BaseSerializer:

swagger.yaml

@@ -12081,6 +12081,25 @@ paths:
       tags:
         - stages
     parameters: []
+  /stages/email/templates/:
+    get:
+      operationId: stages_email_templates
+      description: Get all available templates, including custom templates
+      parameters: []
+      responses:
+        '200':
+          description: ''
+          schema:
+            type: array
+            items:
+              $ref: '#/definitions/TypeCreate'
+        '403':
+          description: Authentication credentials were invalid, absent or insufficient.
+          schema:
+            $ref: '#/definitions/GenericError'
+      tags:
+        - stages
+    parameters: []
   /stages/email/{stage_uuid}/:
     get:
       operationId: stages_email_read
@@ -17693,9 +17712,7 @@ definitions:
       template:
         title: Template
         type: string
-        enum:
-          - email/password_reset.html
-          - email/account_confirmation.html
+        minLength: 1
   IdentificationStage:
     required:
       - name

web/src/pages/stages/email/EmailStageForm.ts

@@ -1,4 +1,4 @@
-import { EmailStage, EmailStageTemplateEnum, StagesApi } from "authentik-api";
+import { EmailStage, StagesApi } from "authentik-api";
 import { t } from "@lingui/macro";
 import { customElement, property } from "lit-element";
 import { html, TemplateResult } from "lit-html";
@@ -8,6 +8,7 @@ import { ifDefined } from "lit-html/directives/if-defined";
 import "../../../elements/forms/HorizontalFormElement";
 import "../../../elements/forms/FormGroup";
 import { first } from "../../../utils";
+import { until } from "lit-html/directives/until";
 
 @customElement("ak-stage-email-form")
 export class EmailStageForm extends Form<EmailStage> {
@@ -153,14 +154,16 @@ export class EmailStageForm extends Form<EmailStage> {
                     <ak-form-element-horizontal
                         label=${t`Template`}
                         ?required=${true}
-                        name="subject">
+                        name="template">
                         <select name="users" class="pf-c-form-control">
-                            <option value=${EmailStageTemplateEnum.AccountConfirmationHtml} ?selected=${this.stage?.template === EmailStageTemplateEnum.AccountConfirmationHtml}>
-                                ${t`Account confirmation`}
-                            </option>
-                            <option value=${EmailStageTemplateEnum.PasswordResetHtml} ?selected=${this.stage?.template === EmailStageTemplateEnum.PasswordResetHtml}>
-                                ${t`Password reset`}
-                            </option>
+                            ${until(new StagesApi(DEFAULT_CONFIG).stagesEmailTemplates().then(templates => {
+                                return templates.map(template => {
+                                    const selected = this.stage?.template === template.name;
+                                    return html`<option value=${ifDefined(template.name)} ?selected=${selected}>
+                                        ${template.description}
+                                    </option>`;
+                                });
+                            }), html`<option>${t`Loading...`}</option>`)}
                         </select>
                     </ak-form-element-horizontal>
                 </div>