From 0c27f4b8a4e51cce01ba1f3af0f8d2702f37aeb3 Mon Sep 17 00:00:00 2001
From: Sean Morley <zipsm15@gmail.com>
Date: Sat, 14 Dec 2024 14:37:16 -0500
Subject: [PATCH] Add download adventures as ICS calendar

---
 backend/server/adventures/urls.py            |  3 +-
 backend/server/adventures/views.py           | 58 +++++++++++++++++++-
 backend/server/requirements.txt              |  4 +-
 frontend/src/locales/de.json                 |  3 +-
 frontend/src/locales/en.json                 |  1 +
 frontend/src/locales/es.json                 |  3 +-
 frontend/src/locales/fr.json                 |  3 +-
 frontend/src/locales/it.json                 |  3 +-
 frontend/src/locales/nl.json                 |  3 +-
 frontend/src/locales/pl.json                 |  3 +-
 frontend/src/locales/sv.json                 |  3 +-
 frontend/src/locales/zh.json                 |  3 +-
 frontend/src/routes/calendar/+page.server.ts | 10 +++-
 frontend/src/routes/calendar/+page.svelte    | 11 ++++
 14 files changed, 99 insertions(+), 12 deletions(-)

diff --git a/backend/server/adventures/urls.py b/backend/server/adventures/urls.py
index 9b7566d..d035522 100644
--- a/backend/server/adventures/urls.py
+++ b/backend/server/adventures/urls.py
@@ -1,6 +1,6 @@
 from django.urls import include, path
 from rest_framework.routers import DefaultRouter
-from .views import AdventureViewSet, ChecklistViewSet, CollectionViewSet, NoteViewSet, StatsViewSet, GenerateDescription, ActivityTypesView, TransportationViewSet, AdventureImageViewSet, ReverseGeocodeViewSet, CategoryViewSet
+from .views import AdventureViewSet, ChecklistViewSet, CollectionViewSet, NoteViewSet, StatsViewSet, GenerateDescription, ActivityTypesView, TransportationViewSet, AdventureImageViewSet, ReverseGeocodeViewSet, CategoryViewSet, IcsCalendarGeneratorViewSet
 
 router = DefaultRouter()
 router.register(r'adventures', AdventureViewSet, basename='adventures')
@@ -14,6 +14,7 @@
 router.register(r'images', AdventureImageViewSet, basename='images')
 router.register(r'reverse-geocode', ReverseGeocodeViewSet, basename='reverse-geocode')
 router.register(r'categories', CategoryViewSet, basename='categories')
+router.register(r'ics-calendar', IcsCalendarGeneratorViewSet, basename='ics-calendar')
 
 
 urlpatterns = [
diff --git a/backend/server/adventures/views.py b/backend/server/adventures/views.py
index 808b9aa..acb03f0 100644
--- a/backend/server/adventures/views.py
+++ b/backend/server/adventures/views.py
@@ -17,6 +17,9 @@
 from django.shortcuts import get_object_or_404
 from rest_framework import status
 from django.contrib.auth import get_user_model
+from icalendar import Calendar, Event, vText, vCalAddress
+from django.http import HttpResponse
+from datetime import datetime
 
 User = get_user_model()
 
@@ -1203,4 +1206,57 @@ def mark_visited_region(self, request):
                         visited_region.save()
                         new_region_count += 1
                         new_regions[region.id] = region.name
-        return Response({"new_regions": new_region_count, "regions": new_regions})
\ No newline at end of file
+        return Response({"new_regions": new_region_count, "regions": new_regions})
+
+
+from django.http import HttpResponse
+from rest_framework import viewsets
+from rest_framework.decorators import action
+from rest_framework.permissions import IsAuthenticated
+from icalendar import Calendar, Event, vText, vCalAddress
+from datetime import datetime, timedelta
+
+class IcsCalendarGeneratorViewSet(viewsets.ViewSet):
+    permission_classes = [IsAuthenticated]
+
+    @action(detail=False, methods=['get'])
+    def generate(self, request):
+        adventures = Adventure.objects.filter(user_id=request.user)
+        serializer = AdventureSerializer(adventures, many=True)
+        user = request.user
+        name = f"{user.first_name} {user.last_name}"
+        print(serializer.data)
+        
+        cal = Calendar()
+        cal.add('prodid', '-//My Adventure Calendar//example.com//')
+        cal.add('version', '2.0')
+
+        for adventure in serializer.data:
+            if adventure['visits']:
+                for visit in adventure['visits']:
+                    event = Event()
+                    event.add('summary', adventure['name'])
+                    start_date = datetime.strptime(visit['start_date'], '%Y-%m-%d').date()
+                    end_date = datetime.strptime(visit['end_date'], '%Y-%m-%d').date() + timedelta(days=1) if visit['end_date'] else start_date + timedelta(days=1)
+                    event.add('dtstart', start_date)
+                    event.add('dtend', end_date)
+                    event.add('dtstamp', datetime.now())
+                    event.add('transp', 'TRANSPARENT')
+                    event.add('class', 'PUBLIC')
+                    event.add('created', datetime.now())
+                    event.add('last-modified', datetime.now())
+                    event.add('description', adventure['description'])
+                    if adventure.get('location'):
+                        event.add('location', adventure['location'])
+                    if adventure.get('link'):
+                        event.add('url', adventure['link'])
+                    
+                    organizer = vCalAddress(f'MAILTO:{user.email}')
+                    organizer.params['cn'] = vText(name)
+                    event.add('organizer', organizer)
+                
+                    cal.add_component(event)
+        
+        response = HttpResponse(cal.to_ical(), content_type='text/calendar')
+        response['Content-Disposition'] = 'attachment; filename=adventures.ics'
+        return response
diff --git a/backend/server/requirements.txt b/backend/server/requirements.txt
index 3f6b406..bae189f 100644
--- a/backend/server/requirements.txt
+++ b/backend/server/requirements.txt
@@ -15,4 +15,6 @@ gunicorn==23.0.0
 qrcode==8.0
 # slippers==0.6.2
 # django-allauth-ui==1.5.1
-# django-widget-tweaks==1.5.0
\ No newline at end of file
+# django-widget-tweaks==1.5.0
+django-ical==1.9.2
+icalendar==6.1.0
\ No newline at end of file
diff --git a/frontend/src/locales/de.json b/frontend/src/locales/de.json
index 53e620e..25e2b41 100644
--- a/frontend/src/locales/de.json
+++ b/frontend/src/locales/de.json
@@ -194,7 +194,8 @@
     "adventure_calendar": "Abenteuerkalender",
     "emoji_picker": "Emoji-Picker",
     "hide": "Verstecken",
-    "show": "Zeigen"
+    "show": "Zeigen",
+    "download_calendar": "Kalender herunterladen"
   },
   "home": {
     "desc_1": "Entdecken, planen und erkunden Sie mit Leichtigkeit",
diff --git a/frontend/src/locales/en.json b/frontend/src/locales/en.json
index b7603b2..cd9b824 100644
--- a/frontend/src/locales/en.json
+++ b/frontend/src/locales/en.json
@@ -217,6 +217,7 @@
 		"show": "Show",
 		"hide": "Hide",
 		"emoji_picker": "Emoji Picker",
+		"download_calendar": "Download Calendar",
 		"days": "days",
 		"activities": {
 			"general": "General 🌍",
diff --git a/frontend/src/locales/es.json b/frontend/src/locales/es.json
index 5283e35..42da49e 100644
--- a/frontend/src/locales/es.json
+++ b/frontend/src/locales/es.json
@@ -241,7 +241,8 @@
     "adventure_calendar": "Calendario de aventuras",
     "emoji_picker": "Selector de emojis",
     "hide": "Esconder",
-    "show": "Espectáculo"
+    "show": "Espectáculo",
+    "download_calendar": "Descargar Calendario"
   },
   "worldtravel": {
     "all": "Todo",
diff --git a/frontend/src/locales/fr.json b/frontend/src/locales/fr.json
index 1f58959..9a532de 100644
--- a/frontend/src/locales/fr.json
+++ b/frontend/src/locales/fr.json
@@ -194,7 +194,8 @@
     "adventure_calendar": "Calendrier d'aventure",
     "emoji_picker": "Sélecteur d'émoticônes",
     "hide": "Cacher",
-    "show": "Montrer"
+    "show": "Montrer",
+    "download_calendar": "Télécharger le calendrier"
   },
   "home": {
     "desc_1": "Découvrez, planifiez et explorez en toute simplicité",
diff --git a/frontend/src/locales/it.json b/frontend/src/locales/it.json
index 77b5498..fa0b1fb 100644
--- a/frontend/src/locales/it.json
+++ b/frontend/src/locales/it.json
@@ -194,7 +194,8 @@
     "adventure_calendar": "Calendario delle avventure",
     "emoji_picker": "Selettore di emoji",
     "hide": "Nascondere",
-    "show": "Spettacolo"
+    "show": "Spettacolo",
+    "download_calendar": "Scarica Calendario"
   },
   "home": {
     "desc_1": "Scopri, pianifica ed esplora con facilità",
diff --git a/frontend/src/locales/nl.json b/frontend/src/locales/nl.json
index 4ebd11b..90ac331 100644
--- a/frontend/src/locales/nl.json
+++ b/frontend/src/locales/nl.json
@@ -194,7 +194,8 @@
     "adventure_calendar": "Avonturenkalender",
     "emoji_picker": "Emoji-kiezer",
     "hide": "Verbergen",
-    "show": "Show"
+    "show": "Show",
+    "download_calendar": "Agenda downloaden"
   },
   "home": {
     "desc_1": "Ontdek, plan en verken met gemak",
diff --git a/frontend/src/locales/pl.json b/frontend/src/locales/pl.json
index 7e50cc8..db3e758 100644
--- a/frontend/src/locales/pl.json
+++ b/frontend/src/locales/pl.json
@@ -241,7 +241,8 @@
     "adventure_calendar": "Kalendarz przygód",
     "emoji_picker": "Wybór emoji",
     "hide": "Ukrywać",
-    "show": "Pokazywać"
+    "show": "Pokazywać",
+    "download_calendar": "Pobierz Kalendarz"
   },
   "worldtravel": {
     "country_list": "Lista krajów",
diff --git a/frontend/src/locales/sv.json b/frontend/src/locales/sv.json
index fe462f9..aae55d5 100644
--- a/frontend/src/locales/sv.json
+++ b/frontend/src/locales/sv.json
@@ -194,7 +194,8 @@
     "adventure_calendar": "Äventyrskalender",
     "emoji_picker": "Emoji-väljare",
     "hide": "Dölja",
-    "show": "Visa"
+    "show": "Visa",
+    "download_calendar": "Ladda ner kalender"
   },
   "home": {
     "desc_1": "Upptäck, planera och utforska med lätthet",
diff --git a/frontend/src/locales/zh.json b/frontend/src/locales/zh.json
index 228f664..56cf01f 100644
--- a/frontend/src/locales/zh.json
+++ b/frontend/src/locales/zh.json
@@ -194,7 +194,8 @@
     "adventure_calendar": "冒险日历",
     "emoji_picker": "表情符号选择器",
     "hide": "隐藏",
-    "show": "展示"
+    "show": "展示",
+    "download_calendar": "下载日历"
   },
   "home": {
     "desc_1": "轻松发现、规划和探索",
diff --git a/frontend/src/routes/calendar/+page.server.ts b/frontend/src/routes/calendar/+page.server.ts
index 0305b93..6c9ede0 100644
--- a/frontend/src/routes/calendar/+page.server.ts
+++ b/frontend/src/routes/calendar/+page.server.ts
@@ -30,10 +30,18 @@ export const load = (async (event) => {
 		});
 	});
 
+	let icsFetch = await fetch(`${endpoint}/api/ics-calendar/generate`, {
+		headers: {
+			Cookie: `sessionid=${sessionId}`
+		}
+	});
+	let ics_calendar = await icsFetch.text();
+
 	return {
 		props: {
 			adventures,
-			dates
+			dates,
+			ics_calendar
 		}
 	};
 }) satisfies PageServerLoad;
diff --git a/frontend/src/routes/calendar/+page.svelte b/frontend/src/routes/calendar/+page.svelte
index 3dc5b2c..476519d 100644
--- a/frontend/src/routes/calendar/+page.svelte
+++ b/frontend/src/routes/calendar/+page.svelte
@@ -14,6 +14,10 @@
 	let adventures = data.props.adventures;
 	let dates = data.props.dates;
 
+	let icsCalendar = data.props.ics_calendar;
+	// turn the ics calendar into a data URL
+	let icsCalendarDataUrl = URL.createObjectURL(new Blob([icsCalendar], { type: 'text/calendar' }));
+
 	let plugins = [TimeGrid, DayGrid];
 	let options = {
 		view: 'dayGridMonth',
@@ -24,3 +28,10 @@
 <h1 class="text-center text-2xl font-bold">{$t('adventures.adventure_calendar')}</h1>
 
 <Calendar {plugins} {options} />
+
+<!-- download calendar -->
+<div class="flex items-center justify-center mt-4">
+	<a href={icsCalendarDataUrl} download="adventures.ics" class="btn btn-primary"
+		>Download Calendar</a
+	>
+</div>