# Multi-stage Docker build for Orbital Simulator
# Stage 1: Build the Rust backend
FROM rust:1.75-slim as rust-builder

# Install system dependencies for building
RUN apt-get update && apt-get install -y \
    pkg-config \
    libssl-dev \
    libfontconfig1-dev \
    libfreetype6-dev \
    libglib2.0-dev \
    libgtk-3-dev \
    libpango1.0-dev \
    libatk1.0-dev \
    libgdk-pixbuf-2.0-dev \
    libcairo2-dev \
    libasound2-dev \
    libudev-dev \
    && rm -rf /var/lib/apt/lists/*

WORKDIR /app

# Copy Cargo files for dependency caching
COPY Cargo.toml ./
COPY build.rs ./

# Create dummy source files to build dependencies
RUN mkdir src && \
    echo "fn main() {}" > src/main.rs && \
    mkdir -p src/bin && \
    echo "fn main() {}" > src/bin/api_server.rs && \
    echo "fn main() {}" > src/bin/simulator.rs && \
    echo "fn main() {}" > src/bin/orbiter.rs

# Build dependencies (this layer will be cached)
RUN cargo build --release --bin api_server

# Remove dummy files
RUN rm -rf src

# Copy actual source code
COPY src ./src
COPY config ./config

# Build the actual application
RUN cargo build --release --bin api_server

# Stage 2: Build the React frontend
FROM node:18-alpine as frontend-builder

WORKDIR /app/web

# Copy package files for dependency caching
COPY web/package.json web/package-lock.json ./

# Install dependencies
RUN npm ci

# Copy source files
COPY web/ ./

# Build the frontend
RUN npm run build

# Stage 3: Runtime image
FROM debian:bookworm-slim

# Install runtime dependencies
RUN apt-get update && apt-get install -y \
    ca-certificates \
    libssl3 \
    curl \
    && rm -rf /var/lib/apt/lists/*

# Create app user
RUN useradd -r -s /bin/false appuser

WORKDIR /app

# Copy the built Rust binary
COPY --from=rust-builder /app/target/release/api_server ./api_server

# Copy configuration files
COPY --from=rust-builder /app/config ./config

# Copy the built frontend
COPY --from=frontend-builder /app/web/dist ./web/dist

# Create necessary directories
RUN mkdir -p logs && \
    chown -R appuser:appuser /app

# Switch to non-root user
USER appuser

# Expose port
EXPOSE 4395

# Health check
HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
    CMD curl -f http://localhost:4395/api/configs || exit 1

# Start the application
CMD ["./api_server"]