From bec3d5a0eaa08b56e2c7b527856c7d4b775fc661 Mon Sep 17 00:00:00 2001
From: cato447 <simon@bussmann.es>
Date: Tue, 28 Oct 2025 22:58:36 +0100
Subject: [PATCH] added download button to slides with pdfs

---
 .gitignore               |  1 +
 app/models.py            |  5 ++++-
 app/routes.py            | 25 +++++++++++++++++++++++++
 app/templates/index.html | 29 +++++++++++++++++++++++------
 4 files changed, 53 insertions(+), 7 deletions(-)

diff --git a/.gitignore b/.gitignore
index 593f83f..8d5b05d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,5 +4,6 @@ node_modules
 .venv
 config.py
 slides
+exports
 log
 nohup.out
diff --git a/app/models.py b/app/models.py
index 8c13ddf..0c5182a 100644
--- a/app/models.py
+++ b/app/models.py
@@ -71,6 +71,7 @@ class Deck(db.Model):
     deck : Mapped[str] = mapped_column(String(60), nullable=False)
     description : Mapped[str] = mapped_column(String(60))
     index_file: Mapped[str] = mapped_column(String(40), nullable=False)
+    export_file: Mapped[Optional[str]] = mapped_column(String(40), nullable=True)
 
     passwords : Mapped[List[Password]] = relationship("Password", secondary=deck_password, back_populates='decks')
     tokens : Mapped[List[Token]] = relationship("Token", secondary=deck_token, back_populates='decks')
@@ -78,12 +79,14 @@ class Deck(db.Model):
     course: Mapped['Course'] = relationship("Course", back_populates='decks')
 
 
-    def __init__(self, name: str, deck: str, course: Course, description: str = "", index_file: str = "index.html") -> None:
+    def __init__(self, name: str, deck: str, course: Course, description: str = "", index_file: str = "index.html", export_file: str | None = None) -> None:
         self.name = name
         self.deck = deck
         self.description = description
         self.course = course
         self.index_file = index_file
+        if export_file:
+            self.export_file = export_file 
 
     def __repr__(self) -> str:
         return f"<Deck(name={self.name}, deck={self.deck}, course={self.course}, index={self.index_file})>"
diff --git a/app/routes.py b/app/routes.py
index d074711..1f59b5c 100644
--- a/app/routes.py
+++ b/app/routes.py
@@ -102,6 +102,9 @@ def index():
     if not token:
         return redirect(url_for("main.set_token")) 
     else:
+        for deck in get_unlocked_decks(token):
+            print(str(deck) + " | " + str(deck.export_file))
+
         return render_template('index.html', active_banner=get_active_banner(), decks=get_unlocked_decks(token), user_name=token.name, active_course_name=token.active_course.name, courses=get_all_courses())
 
 def set_cookie(token):
@@ -308,6 +311,28 @@ def serve_deck(deck, course_folder, path='index.html'):
 
     abort(404)
 
+
+@main.route('/exports/<course_folder>/<deck>/<path>')
+def serve_export(deck, course_folder, path):
+    course = db.session.execute(db.select(Course).where(Course.folder==course_folder)).scalar()
+    if not course:
+        abort(404)
+    assert isinstance(course, Course)
+    deck = db.session.execute(db.select(Deck).where(Deck.deck==deck and Deck.course_id == course.id)).scalar()
+    if not deck:
+        abort(404)
+    assert isinstance(deck, Deck)
+
+    if not is_deck_unlocked(deck.deck):
+        return redirect(url_for('main.index'))
+    exports_dir = os.path.join(current_app.config['EXPORTS_DIR'], course.folder)
+    deck_path = os.path.join(exports_dir, deck.deck)
+    requested_file = os.path.join(deck_path, path)
+    if os.path.isfile(requested_file):
+        return send_from_directory(deck_path, path)
+    abort(404)
+
+
 @main.route('/admin', methods=['GET', 'POST'])
 @flask_login.login_required
 def admin():
diff --git a/app/templates/index.html b/app/templates/index.html
index 1e3fdd8..0b47ad0 100644
--- a/app/templates/index.html
+++ b/app/templates/index.html
@@ -130,14 +130,31 @@
     <!-- Deck Cards -->
     {% if decks %}
     <section>
-      <div class="grid grid-cols-1 sm:grid-cols-2 lg:grid-cols-3 gap-6">
+    <div class="grid grid-cols-1 sm:grid-cols-2 lg:grid-cols-3 gap-6">
         {% for deck in decks %}
-        <a href="/slides/{{deck.course.folder}}/{{ deck.deck }}/{{ deck.index_file}}" class="block bg-surface border border-border rounded-xl p-5 shadow-sm hover:border-primary hover:bg-background transition">
-            <h3 class="text-lg font-semibold mb-1">{{ deck.name }}</h3>
-            <p class="text-muted text-sm">{{ deck.description }}</p>
-          </a>
+        <div class="bg-surface border border-border rounded-xl shadow-sm transition hover:shadow-lg flex flex-col">
+            
+            <div class="flex items-center p-5 gap-4"> 
+                
+                <a href="/slides/{{deck.course.folder}}/{{ deck.deck }}/{{ deck.index_file}}" 
+                    class="flex-grow block border-r border-border pr-4 hover:border-primary transition rounded-xl">
+                    <h3 class="text-lg font-semibold mb-1">{{ deck.name }}</h3>
+                    <p class="text-muted text-sm">{{ deck.description }}</p>
+                </a>
+                {% if deck.export_file %}
+                <a href="/exports/{{deck.course.folder}}/{{ deck.deck }}/{{ deck.export_file}}" 
+                    class="inline-flex items-center justify-center flex-shrink-0 h-10 w-10 text-on-primary hover:bg-primary/90 transition" 
+                    download title="Download Presentation">
+                    <svg xmlns="http://www.w3.org/2000/svg" class="h-6 w-6" fill="none" viewBox="0 0 24 24" stroke="currentColor" stroke-width="2">
+                        <path stroke-linecap="round" stroke-linejoin="round" d="M4 16v1a3 3 0 003 3h10a3 3 0 003-3v-1m-4-4l-4 4m0 0l-4-4m4 4V4" />
+                    </svg>
+                </a>
+                {% endif %}
+            </div>
+            
+        </div>
         {% endfor %}
-      </div>
+    </div>
     </section>
     {% else %}
       <p class="text-center text-muted">No decks unlocked yet.</p>