From 01e68976a2d87d8dfbb8464c889afbbe08873a9d Mon Sep 17 00:00:00 2001
From: Mohammad Hosein Aref <76614003+aref81@users.noreply.github.com>
Date: Wed, 29 Nov 2023 03:25:38 +0330
Subject: [PATCH] feat(backend) add google calender link (#35)

* Add "google_calender_link" Property to "Workshop", "Presentation"

* Add Fields serializers.py

* Fix Property Name

* feat: url encode

* migration

* fix(backend): fix quoting multiple times

---------

Co-authored-by: Alireza Zare <azare242@gmail.com>
Co-authored-by: Adibov <hesamadibi80@gmail.com>
---
 ...51_remove_workshop_add_to_calendar_link.py | 17 +++++++++
 backend/backend_api/models.py                 | 36 +++++++++++++++++--
 backend/backend_api/serializers.py            |  2 ++
 3 files changed, 53 insertions(+), 2 deletions(-)
 create mode 100644 backend/backend_api/migrations/0051_remove_workshop_add_to_calendar_link.py

diff --git a/backend/backend_api/migrations/0051_remove_workshop_add_to_calendar_link.py b/backend/backend_api/migrations/0051_remove_workshop_add_to_calendar_link.py
new file mode 100644
index 0000000..9f80247
--- /dev/null
+++ b/backend/backend_api/migrations/0051_remove_workshop_add_to_calendar_link.py
@@ -0,0 +1,17 @@
+# Generated by Django 4.2.4 on 2023-11-28 22:05
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("backend_api", "0050_presentation_has_project"),
+    ]
+
+    operations = [
+        migrations.RemoveField(
+            model_name="workshop",
+            name="add_to_calendar_link",
+        ),
+    ]
diff --git a/backend/backend_api/models.py b/backend/backend_api/models.py
index b6c42e2..e3838f6 100644
--- a/backend/backend_api/models.py
+++ b/backend/backend_api/models.py
@@ -12,6 +12,7 @@
 from django.utils.translation import gettext_lazy as _
 from rest_framework.exceptions import ValidationError
 from rest_framework import status
+from django.utils.html import escape
 
 from aaiss_backend import settings
 from aaiss_backend.settings import BASE_URL
@@ -19,7 +20,7 @@
 from backend_api.email import MailerThread
 from utils.random import create_random_string
 from utils.renderers import new_detailed_response
-
+from urllib.parse import quote
 SMALL_MAX_LENGTH = 255
 BIG_MAX_LENGTH = 65535
 
@@ -100,7 +101,6 @@ class Workshop(models.Model):
     has_project = models.BooleanField(default=False, blank=False)
     prerequisites = models.CharField(max_length=BIG_MAX_LENGTH, default='', blank=True)
     capacity = models.PositiveSmallIntegerField(default=50)
-    add_to_calendar_link = models.CharField(max_length=SMALL_MAX_LENGTH, default='', blank=True)
     year = models.IntegerField(blank=False, default=2020)
 
     NOT_ASSIGNED = 'NOT_ASSIGNED'
@@ -142,6 +142,22 @@ def participants(self):
             participants += participant.user
         return participants
 
+    @property
+    def google_calendar_link(self):
+        base_url = "https://www.google.com/calendar/render?action=TEMPLATE"
+        workshop_title = escape(self.name)
+        workshop_description = escape(self.desc)
+        start_datetime = self.start_date.strftime("%Y%m%dT%H%M%S")
+        end_datetime = self.end_date.strftime("%Y%m%dT%H%M%S")
+
+        teachers_names = " ".join([teacher.name for teacher in self.teachers.all()])
+        event_details = f"Teachers: {teachers_names}\nDescription: {workshop_description}"
+        query_params = f"text={quote(workshop_title)}&dates={start_datetime}/{end_datetime}&details={quote(event_details)}"
+
+        link = f"{base_url}&{query_params}"
+
+        return link
+
     def __str__(self):
         name = ""
         for teacher in self.teachers.all():
@@ -197,6 +213,22 @@ def participants(self):
             participants += participant.user
         return participants
 
+    @property
+    def google_calendar_link(self):
+        base_url = "https://www.google.com/calendar/render?action=TEMPLATE"
+        presentation_title = escape(self.name)
+        presentation_description = escape(self.desc)
+        start_datetime = self.start_date.strftime("%Y%m%dT%H%M%S")
+        end_datetime = self.end_date.strftime("%Y%m%dT%H%M%S")
+
+        presenters_names = " ".join([presenter.name for presenter in self.presenters.all()])
+        event_details = f"Presenters: {presenters_names}\nDescription: {presentation_description}"
+        query_params = f"text={quote(presentation_title)}&dates={start_datetime}/{end_datetime}&details={quote(event_details)}"
+
+        link = f"{base_url}&{query_params}"
+
+        return link
+
     def __str__(self):
         name = ""
         for presenter in self.presenters.all():
diff --git a/backend/backend_api/serializers.py b/backend/backend_api/serializers.py
index 83732ff..e2b5a01 100644
--- a/backend/backend_api/serializers.py
+++ b/backend/backend_api/serializers.py
@@ -57,6 +57,7 @@ class AllStaffSectionSerializer(serializers.Serializer):
 
 class WorkshopSerializer(serializers.ModelSerializer):
     remaining_capacity = serializers.IntegerField()
+    google_calendar_link = serializers.CharField()
 
     class Meta:
         model = models.Workshop
@@ -65,6 +66,7 @@ class Meta:
 
 class PresentationSerializer(serializers.ModelSerializer):
     remaining_capacity = serializers.IntegerField()
+    google_calendar_link = serializers.CharField()
 
     class Meta:
         model = models.Presentation