FROM python:3.10-slim

WORKDIR /app

# Install system dependencies including nginx
RUN apt-get update && apt-get install -y \
    build-essential \
    curl \
    nginx \
    && rm -rf /var/lib/apt/lists/*

# Install Node.js for the frontend build
RUN curl -fsSL https://deb.nodesource.com/setup_18.x | bash - \
    && apt-get install -y nodejs \
    && rm -rf /var/lib/apt/lists/*

# Copy backend requirements and install
COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt

# Copy backend files
COPY main.py .
COPY rfp_analyzer.py .
COPY rubric.yaml .

# Copy frontend files
COPY ui-svelte/ ./ui-svelte/

# Build frontend
WORKDIR /app/ui-svelte

# Fix npm permissions and install
RUN npm config set cache /tmp/.npm --global && \
    npm install && \
    chmod -R 755 node_modules/.bin

# Build with explicit path to vite
RUN npx vite build

# Configure nginx
WORKDIR /app

# Create writable directories for nginx
RUN mkdir -p /tmp/nginx/body /tmp/nginx/proxy /tmp/nginx/fastcgi /tmp/nginx/uwsgi /tmp/nginx/scgi && \
    chmod -R 777 /tmp/nginx

# Configure nginx to use /tmp directories (no root required)
RUN echo 'pid /tmp/nginx.pid;\n\
error_log /dev/stderr warn;\n\
\n\
events {\n\
    worker_connections 1024;\n\
}\n\
\n\
http {\n\
    include /etc/nginx/mime.types;\n\
    default_type application/octet-stream;\n\
    \n\
    # Use /tmp directories for nginx temporary files\n\
    client_body_temp_path /tmp/nginx/body;\n\
    proxy_temp_path /tmp/nginx/proxy;\n\
    fastcgi_temp_path /tmp/nginx/fastcgi;\n\
    uwsgi_temp_path /tmp/nginx/uwsgi;\n\
    scgi_temp_path /tmp/nginx/scgi;\n\
    \n\
    access_log /dev/stdout;\n\
    \n\
    sendfile on;\n\
    tcp_nopush on;\n\
    tcp_nodelay on;\n\
    keepalive_timeout 65;\n\
    types_hash_max_size 2048;\n\
    \n\
    server {\n\
        listen 7860;\n\
        server_name _;\n\
        \n\
        # Serve static files from Svelte build\n\
        root /app/ui-svelte/dist;\n\
        index index.html;\n\
        \n\
        # API proxy to FastAPI backend\n\
        location /analyze {\n\
            proxy_pass http://localhost:8000;\n\
            proxy_http_version 1.1;\n\
            proxy_set_header Upgrade $http_upgrade;\n\
            proxy_set_header Connection "upgrade";\n\
            proxy_set_header Host $host;\n\
            proxy_set_header X-Real-IP $remote_addr;\n\
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;\n\
            proxy_set_header X-Forwarded-Proto $scheme;\n\
            proxy_read_timeout 300s;\n\
            proxy_connect_timeout 75s;\n\
        }\n\
        \n\
        location /preview-pdf {\n\
            proxy_pass http://localhost:8000;\n\
            proxy_http_version 1.1;\n\
            proxy_set_header Host $host;\n\
            proxy_set_header X-Real-IP $remote_addr;\n\
            proxy_read_timeout 300s;\n\
        }\n\
        \n\
        location /health {\n\
            proxy_pass http://localhost:8000;\n\
        }\n\
        \n\
        location /docs {\n\
            proxy_pass http://localhost:8000;\n\
        }\n\
        \n\
        location /openapi.json {\n\
            proxy_pass http://localhost:8000;\n\
        }\n\
        \n\
        # Serve static files\n\
        location / {\n\
            try_files $uri $uri/ /index.html;\n\
        }\n\
        \n\
        # Disable buffering for large uploads\n\
        client_max_body_size 100M;\n\
        proxy_buffering off;\n\
    }\n\
}\n\
' > /etc/nginx/nginx.conf

# Create startup script
RUN echo '#!/bin/bash\n\
set -e\n\
\n\
# Start FastAPI backend in background\n\
echo "Starting FastAPI backend..."\n\
uvicorn main:app --host 0.0.0.0 --port 8000 &\n\
BACKEND_PID=$!\n\
\n\
# Wait for backend to be ready\n\
echo "Waiting for backend to start..."\n\
sleep 5\n\
\n\
# Start nginx\n\
echo "Starting nginx on port 7860..."\n\
nginx -g "daemon off;" &\n\
NGINX_PID=$!\n\
\n\
echo "✅ RFP Analyzer is running!"\n\
echo "   Backend: http://localhost:8000"\n\
echo "   Frontend: http://localhost:7860"\n\
\n\
# Wait for any process to exit\n\
wait -n\n\
\n\
# Exit with status of process that exited first\n\
exit $?\n\
' > /app/start.sh && chmod +x /app/start.sh

EXPOSE 7860 8000

CMD ["/app/start.sh"]