# --- STAGE 1: The Builder ---
FROM debian:latest AS build-env

# Install necessary dependencies for Flutter 
RUN apt-get update && apt-get install -y \
    curl git wget unzip libglu1-mesa fonts-droid-fallback python3 \
    && rm -rf /var/lib/apt/lists/*

# Clone Flutter SDK 
RUN git clone -b flutter-3.32-candidate.0 https://github.com/flutter/flutter.git /usr/local/flutter
ENV PATH="/usr/local/flutter/bin:/usr/local/flutter/bin/cache/dart-sdk/bin:${PATH}"

# Build the Flutter web app 
WORKDIR /app
COPY . .
RUN flutter config --enable-web
RUN flutter build web --release -t ./lib/main_prod.dart

# --- STAGE 2: The Final Production Image ---
FROM nginx:alpine

# Copy built files from the first stage 
COPY --from=build-env /app/build/web /usr/share/nginx/html

# Create the Nginx config inside the Dockerfile to handle SPA routing 
RUN echo 'server { \
    listen 83; \
    location / { \
    root /usr/share/nginx/html; \
    index index.html; \
    try_files $uri $uri/ /index.html; \
    } \
    }' > /etc/nginx/conf.d/default.conf

EXPOSE 83
CMD ["nginx", "-g", "daemon off;"]