FROM ubuntu:22.04

# Prevent interactive prompts during build
ENV DEBIAN_FRONTEND=noninteractive

# Install Node.js and utilities
RUN apt-get update && apt-get install -y \
    curl \
    tar \
    ca-certificates \
    findutils \
    && curl -fsSL https://deb.nodesource.com/setup_20.x | bash - \
    && apt-get install -y nodejs \
    && rm -rf /var/lib/apt/lists/*

# Create directory for ITURHFProp
WORKDIR /opt/iturhfprop

# Download individual binary files from v14.3 release (latest)
RUN curl -L -o ITURHFProp "https://github.com/ITU-R-Study-Group-3/ITU-R-HF/releases/download/v14.3/ITURHFProp" \
    && curl -L -o libp533.so "https://github.com/ITU-R-Study-Group-3/ITU-R-HF/releases/download/v14.3/libp533.so" \
    && curl -L -o libp372.so "https://github.com/ITU-R-Study-Group-3/ITU-R-HF/releases/download/v14.3/libp372.so" \
    && chmod +x ITURHFProp

# Download source to get Data files
RUN curl -L -o source.tar.gz "https://github.com/ITU-R-Study-Group-3/ITU-R-HF/archive/refs/tags/v14.3.tar.gz" \
    && tar -xzf source.tar.gz \
    && echo "=== Finding all Data directories ===" \
    && find ITU-R-HF-14.3 -type d -name "Data" \
    && echo "=== Finding ionos files ===" \
    && find ITU-R-HF-14.3 -name "ionos*.bin" \
    && echo "=== Finding ant files ===" \
    && find ITU-R-HF-14.3 -name "*.ant" \
    && echo "=== Finding COEFF files ===" \
    && find ITU-R-HF-14.3 -name "COEFF*.BIN" | head -5

# Create Data directory and copy ALL required files from various locations
RUN mkdir -p Data \
    && echo "=== Copying COEFF files ===" \
    && find ITU-R-HF-14.3 -name "COEFF*.BIN" -exec cp {} Data/ \; \
    && find ITU-R-HF-14.3 -name "COEFF*.txt" -exec cp {} Data/ \; \
    && echo "=== Copying ionos files ===" \
    && find ITU-R-HF-14.3 -name "ionos*.bin" -exec cp {} Data/ \; \
    && echo "=== Copying antenna files ===" \
    && find ITU-R-HF-14.3 -name "*.ant" -exec cp {} Data/ \; \
    && echo "=== Copying any other data files ===" \
    && find ITU-R-HF-14.3 -name "P372*.txt" -exec cp {} Data/ \; 2>/dev/null || true \
    && find ITU-R-HF-14.3 -name "*.csv" -exec cp {} Data/ \; 2>/dev/null || true

# Cleanup
RUN rm -rf ITU-R-HF-14.3 source.tar.gz

# Set library path so ITURHFProp can find shared libs
ENV LD_LIBRARY_PATH=/opt/iturhfprop:$LD_LIBRARY_PATH

# Verify installation - show all files in Data
RUN echo "=== Binary files ===" && ls -la /opt/iturhfprop/*.so /opt/iturhfprop/ITURHFProp \
    && echo "=== Data directory contents ===" && ls -la /opt/iturhfprop/Data/

# Set up the API service
WORKDIR /app
COPY package.json ./
RUN npm install --production

COPY server.js ./

# Environment
ENV PORT=3000
ENV ITURHFPROP_PATH=/opt/iturhfprop/ITURHFProp
ENV ITURHFPROP_DATA=/opt/iturhfprop

EXPOSE 3000

CMD ["node", "server.js"]