# Multi-stage build for Foxhunt Backtesting Service
# Wave 71 Agent 8: Production-optimized Docker image

# =============================================================================
# Builder Stage
# =============================================================================
FROM rust:1.89-slim-bookworm AS builder

# Install build dependencies
RUN apt-get update && apt-get install -y \
    pkg-config \
    libssl-dev \
    protobuf-compiler \
    && rm -rf /var/lib/apt/lists/*

# Set working directory
WORKDIR /build

# Copy workspace manifests
COPY Cargo.toml Cargo.lock ./

# Copy entire workspace (simple direct build)
COPY . .

# Build the application
RUN cargo build --release -p backtesting_service

# =============================================================================
# Runtime Stage
# =============================================================================
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/*

# Download and install grpc_health_probe
RUN curl -sSL https://github.com/grpc-ecosystem/grpc-health-probe/releases/download/v0.4.25/grpc_health_probe-linux-amd64 \
    -o /usr/local/bin/grpc_health_probe && \
    chmod +x /usr/local/bin/grpc_health_probe

# Create non-root user
RUN groupadd --system --gid 1000 foxhunt && \
    useradd --system --uid 1000 --gid foxhunt --shell /bin/bash foxhunt

# Create application directories
RUN mkdir -p /app/config /app/logs /app/data /app/results && \
    chown -R foxhunt:foxhunt /app

# Set working directory
WORKDIR /app

# Copy binary from builder
COPY --from=builder /build/target/release/backtesting_service ./backtesting_service
RUN chmod +x ./backtesting_service

# Switch to non-root user
USER foxhunt

# Expose gRPC and metrics ports
EXPOSE 50052 9093

# Health check using grpc_health_probe
HEALTHCHECK --interval=10s --timeout=5s --start-period=30s --retries=3 \
    CMD /usr/local/bin/grpc_health_probe -addr=localhost:50052 || exit 1

# Run the application
ENTRYPOINT ["./backtesting_service"]