From dd86fc1fcb8243b746bd6c202f61571d779b3be9 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jon=C3=A1=C5=A1=20Havelka?= <jonas.havelka@volny.cz>
Date: Thu, 12 Dec 2024 13:52:55 +0100
Subject: [PATCH] =?UTF-8?q?Dynamick=C3=BD=20update=20stavu?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 korektury/api/urls.py                         |  7 ++++
 korektury/api/views.py                        | 20 +++++++++++
 .../korekturovatko/_zmena_stavu.html          | 35 +++++++++++++++++--
 korektury/urls.py                             |  4 +++
 4 files changed, 64 insertions(+), 2 deletions(-)
 create mode 100644 korektury/api/urls.py
 create mode 100644 korektury/api/views.py

diff --git a/korektury/api/urls.py b/korektury/api/urls.py
new file mode 100644
index 00000000..23ac8559
--- /dev/null
+++ b/korektury/api/urls.py
@@ -0,0 +1,7 @@
+from django.urls import path
+from personalni.utils import org_required
+from . import views
+
+urlpatterns = [
+	path('korektury/api/<int:pdf_id>/stav', org_required(views.korektury_stav_view), name='korektury_api_pdf_stav'),
+]
diff --git a/korektury/api/views.py b/korektury/api/views.py
new file mode 100644
index 00000000..358a3502
--- /dev/null
+++ b/korektury/api/views.py
@@ -0,0 +1,20 @@
+from django.http import HttpResponseForbidden, JsonResponse
+from django.shortcuts import get_object_or_404
+from django.views.decorators.csrf import csrf_exempt
+
+from rest_framework import serializers
+
+from korektury.utils import send_email_notification_komentar
+from korektury.models import Oprava, KorekturovanePDF, Komentar
+from personalni.models import Organizator, Osoba
+
+
+def korektury_stav_view(request, pdf_id: int, **kwargs):
+	q = request.POST
+	pdf = get_object_or_404(KorekturovanePDF, id=pdf_id)
+	status = q.get('state')
+	if status is not None:
+		assert status in KorekturovanePDF.STATUS.values
+		pdf.status = status
+		pdf.save()
+	return JsonResponse({'status': pdf.status})
diff --git a/korektury/templates/korektury/korekturovatko/_zmena_stavu.html b/korektury/templates/korektury/korekturovatko/_zmena_stavu.html
index e0415019..d2cb9bec 100644
--- a/korektury/templates/korektury/korekturovatko/_zmena_stavu.html
+++ b/korektury/templates/korektury/korekturovatko/_zmena_stavu.html
@@ -1,9 +1,8 @@
 <h4>Změnit stav PDF:</h4>
 <i>Aktuální: {{pdf.status}}</i>
 <br>
-<form method="post">
+<form method="post" id="PDFSTAV_FORM">
   {% csrf_token %}
-  <input type='hidden' name='action' value='set-state'/>
   <input type="radio" name="state" value="{{ pdf.STATUS.PRIDAVANI }}" {% if pdf.status == pdf.STATUS.PRIDAVANI %} checked {% endif %}>Přidávání korektur
   <br>
   <input type="radio" name="state" value="{{ pdf.STATUS.ZANASENI }}" {% if pdf.status == pdf.STATUS.ZANASENI %} checked {% endif %}>Zanášení korektur
@@ -12,3 +11,35 @@
   <br>
   <input type='submit' value='Změnit stav PDF'/>
 </form>
+
+<script>
+  const pdfstav_form = document.getElementById('PDFSTAV_FORM');
+  const csrf_form = document.getElementById('CSRF_FORM');
+
+  /**
+   *
+   * @param {RequestInit} data
+   * @param {Boolean} catchError
+   */
+  function fetchStav(data, catchError=true) {
+    fetch("{% url 'korektury_api_pdf_stav' pdf.id %}", data
+    )
+      .then(response => {
+        if (!response.ok) { if (catchError) alert("Něco se nepovedlo:" + response.statusText);}
+        else response.json().then(data => document.body.dataset.status = data["status"]);
+      })
+      .catch(error => {if (catchError) alert("Něco se nepovedlo:" + error);});
+  }
+
+  pdfstav_form.addEventListener('submit', async event => {
+    event.preventDefault();
+
+    const data = new FormData(pdfstav_form);
+    fetchStav({method: "POST", body: data});
+  });
+
+
+  // FIXME není mi jasné, zda v {} nemá být `cache: "no-store"`, aby prohlížeč necachoval get.
+  setInterval(() => fetchStav({}, false), 30000); // Každou půl minutu fetchni stav
+</script>
+
diff --git a/korektury/urls.py b/korektury/urls.py
index cf45ea8f..6dc00a4e 100644
--- a/korektury/urls.py
+++ b/korektury/urls.py
@@ -1,4 +1,6 @@
 from django.urls import path
+from django.urls import include
+
 from personalni.utils import org_required
 from . import views
 
@@ -7,4 +9,6 @@ urlpatterns = [
 	path('korektury/neseskupene/', org_required(views.KorekturyAktualniListView.as_view()), name='korektury_neseskupene_list'),
 	path('korektury/zastarale/', org_required(views.KorekturyZastaraleListView.as_view()), name='korektury_stare_list'),
 	path('korektury/<int:pdf>/', org_required(views.KorekturyView.as_view()), name='korektury'),
+
+	path('api/', include('korektury.api.urls')),
 ]