diagnostics: Change "Re-run setup" to "Try to repair"

Signed-off-by: James Valleroy <jvalleroy@mailbox.org>
[sunil: Fix issue with formatting i18n message]
Signed-off-by: Sunil Mohan Adapa <sunil@medhas.org>
Reviewed-by: Sunil Mohan Adapa <sunil@medhas.org>

plinth/modules/diagnostics/__init__.py

@@ -128,7 +128,7 @@ def _run_on_all_enabled_modules():
         app_results = {
             'diagnosis': [],
             'exception': None,
-            'show_rerun_setup': False,
+            'show_repair': False,
         }
 
         try:
@@ -140,7 +140,7 @@ def _run_on_all_enabled_modules():
 
         for check in app_results['diagnosis']:
             if check.result in [Result.FAILED, Result.WARNING]:
-                app_results['show_rerun_setup'] = True
+                app_results['show_repair'] = True
                 break
 
         with results_lock:

plinth/modules/diagnostics/templates/diagnostics_app.html

@@ -12,12 +12,12 @@
   <div class="row align-items-center justify-content-between">
     <h3>{% blocktrans %}App: {{ app_name }}{% endblocktrans %}</h3>
 
-    {% if show_rerun_setup %}
-      <form class="form form-diagnostics-rerun-setup-button" method="post"
-            action="{% url 'rerun-setup' app_id=app_id %}">
+    {% if show_repair %}
+      <form class="form form-diagnostics-repair-button" method="post"
+            action="{% url 'diagnostics:repair' app_id=app_id %}">
         {% csrf_token %}
         <input type="submit" class="btn btn-default"
-               name="rerun-setup" value="{% trans "Re-run setup" %}"/>
+               name="repair" value="{% trans "Try to repair" %}"/>
       </form>
     {% endif %}
   </div>

plinth/modules/diagnostics/templates/diagnostics_full.html

@@ -40,12 +40,12 @@
           {% endblocktrans %}
         </h4>
 
-        {% if app_data.show_rerun_setup %}
-          <form class="form form-diagnostics-rerun-setup-button" method="post"
-                action="{% url 'rerun-setup' app_id=app_id %}">
+        {% if app_data.show_repair %}
+          <form class="form form-diagnostics-repair-button" method="post"
+                action="{% url 'diagnostics:repair' app_id=app_id %}">
             {% csrf_token %}
             <input type="submit" class="btn btn-default"
-                   name="rerun-setup" value="{% trans "Re-run setup" %}"/>
+                   name="repair" value="{% trans "Try to repair" %}"/>
           </form>
         {% endif %}
       </div>

plinth/modules/diagnostics/urls.py

@@ -14,4 +14,6 @@ urlpatterns = [
             name='full'),
     re_path(r'^sys/diagnostics/(?P<app_id>[1-9a-z\-_]+)/$', views.diagnose_app,
             name='app'),
+    re_path(r'^sys/diagnostics/repair/(?P<app_id>[1-9a-z\-_]+)/$',
+            views.repair, name='repair'),
 ]

plinth/modules/diagnostics/views.py

@@ -7,7 +7,9 @@ import logging
 
 from django.contrib import messages
 from django.http import Http404
+from django.shortcuts import redirect
 from django.template.response import TemplateResponse
+from django.urls import NoReverseMatch, reverse
 from django.utils.translation import gettext_lazy as _
 from django.views.decorators.http import require_POST
 from django.views.generic import TemplateView
@@ -16,6 +18,7 @@ from plinth import operation
 from plinth.app import App
 from plinth.diagnostic_check import Result
 from plinth.modules import diagnostics
+from plinth.setup import run_repair_on_app
 from plinth.views import AppView
 
 from .forms import ConfigureForm
@@ -100,10 +103,10 @@ def diagnose_app(request, app_id):
                          exception)
         diagnosis_exception = str(exception)
 
-    show_rerun_setup = False
+    show_repair = False
     for check in diagnosis:
         if check.result in [Result.FAILED, Result.WARNING]:
-            show_rerun_setup = True
+            show_repair = True
             break
 
     return TemplateResponse(
@@ -113,5 +116,34 @@ def diagnose_app(request, app_id):
             'app_name': app_name,
             'results': diagnosis,
             'exception': diagnosis_exception,
-            'show_rerun_setup': show_rerun_setup,
+            'show_repair': show_repair,
         })
+
+
+@require_POST
+def repair(request, app_id):
+    """Try to repair failed diagnostics on an app.
+
+    Allows apps and components to customize the repair method. Re-run setup is
+    the default if not specified.
+    """
+    try:
+        app = App.get(app_id)
+    except KeyError:
+        raise Http404('App does not exist')
+
+    try:
+        finish_url = reverse(f'{app_id}:index')
+    except NoReverseMatch:
+        # for apps like apache that don't have an index route
+        finish_url = reverse('diagnostics:index')
+
+    current_version = app.get_setup_version()
+    if not current_version:
+        logger.warning('App %s is not installed, cannot repair', app_id)
+        message = _('App {app_id} is not installed, cannot repair')
+        messages.error(request, str(message).format(app_id=app_id))
+        return redirect(finish_url)
+
+    run_repair_on_app(app_id)
+    return redirect(finish_url)