update

Dockerfile

@@ -3,15 +3,45 @@ FROM ubuntu:22.04
 # Prevent interactive prompts during installation
 ENV DEBIAN_FRONTEND=noninteractive
 
-# Install system dependencies
+# Install system dependencies including fonts
 RUN apt-get update && apt-get install -y \
     python3 \
     python3-pip \
     texlive-full \
+    texlive-xetex \
+    texlive-luatex \
     latexmk \
+    fonts-liberation \
+    fonts-dejavu \
+    fonts-liberation2 \
+    fonts-noto \
+    fonts-noto-color-emoji \
+    fonts-roboto \
+    fonts-open-sans \
+    fonts-lato \
+    fonts-inconsolata \
+    fonts-firacode \
+    fonts-ubuntu \
+    fonts-lobster \
+    fontconfig \
+    wget \
+    unzip \
     && apt-get clean \
     && rm -rf /var/lib/apt/lists/*
 
+# Download additional script/decorative fonts from Google Fonts
+RUN mkdir -p /usr/share/fonts/truetype/google-fonts && \
+    cd /tmp && \
+    # Dancing Script - elegant script font
+    wget -q "https://github.com/google/fonts/raw/main/ofl/dancingscript/DancingScript%5Bwght%5D.ttf" -O /usr/share/fonts/truetype/google-fonts/DancingScript.ttf && \
+    # Pacifico - playful script font
+    wget -q "https://github.com/google/fonts/raw/main/ofl/pacifico/Pacifico-Regular.ttf" -O /usr/share/fonts/truetype/google-fonts/Pacifico.ttf && \
+    # Satisfy - handwriting font
+    wget -q "https://github.com/google/fonts/raw/main/ofl/satisfy/Satisfy-Regular.ttf" -O /usr/share/fonts/truetype/google-fonts/Satisfy.ttf && \
+    # Great Vibes - elegant script
+    wget -q "https://github.com/google/fonts/raw/main/ofl/greatvibes/GreatVibes-Regular.ttf" -O /usr/share/fonts/truetype/google-fonts/GreatVibes.ttf && \
+    fc-cache -f -v
+
 # Install Python dependencies
 RUN pip3 install --no-cache-dir flask flask-cors
 

app.py

@@ -161,9 +161,14 @@ def compile_latex():
         with open(tex_file, 'w', encoding='utf-8') as f:
             f.write(latex_code)
         
-        # Compile with pdflatex
+        # Detect which engine to use based on packages
+        engine = 'pdflatex'
+        if '\\usepackage{fontspec}' in latex_code or '\\setmainfont' in latex_code:
+            engine = 'xelatex'
+        
+        # Compile with appropriate LaTeX engine
         result = subprocess.run(
-            ['pdflatex', '-interaction=nonstopmode', '-output-directory', temp_dir, tex_file],
+            [engine, '-interaction=nonstopmode', '-output-directory', temp_dir, tex_file],
             capture_output=True,
             text=True,
             timeout=30
@@ -181,7 +186,7 @@ def compile_latex():
                     error_log = f.read()
             
             return jsonify({
-                'error': 'Compilation failed',
+                'error': f'Compilation failed with {engine}',
                 'log': error_log or result.stderr or result.stdout
             }), 400