# ── Stage 1: builder ──────────────────────────────────────────────────────────
FROM rust:1.88-slim-bookworm AS builder

# Build dependencies for native libs (OpenSSL via rustls not needed, but sqlx needs pkg-config)
RUN apt-get update && apt-get install -y --no-install-recommends \
    pkg-config \
    libssl-dev \
    && rm -rf /var/lib/apt/lists/*

WORKDIR /app

# Cache dependency compilation separately from source
COPY Cargo.toml Cargo.lock ./

# Create a dummy main so Cargo can compile deps without our source
RUN mkdir src && echo "fn main() {}" > src/main.rs
RUN cargo build --release --bin meowspool 2>/dev/null; true

# Now copy real source and migrations
COPY src ./src
COPY migrations ./migrations

# Touch main.rs so Cargo knows it changed, then build for real
RUN touch src/main.rs && cargo build --release --bin meowspool

# ── Stage 2: runtime ──────────────────────────────────────────────────────────
FROM debian:bookworm-slim AS runtime

RUN apt-get update && apt-get install -y --no-install-recommends \
    ca-certificates \
    && rm -rf /var/lib/apt/lists/*

WORKDIR /app

COPY --from=builder /app/target/release/meowspool ./meowspool
COPY --from=builder /app/migrations ./migrations

EXPOSE 8080

CMD ["./meowspool"]