# ── Build stage ──────────────────────────────────────────────────────────────
FROM rust:1-slim AS builder

WORKDIR /build

# Cache dependency compilation separately from application code.
COPY Cargo.toml Cargo.lock build.rs ./
# Dummy source so `cargo build` can compile dependencies without the real code.
RUN mkdir src && echo 'fn main(){}' > src/main.rs \
    && cargo build --release \
    && rm src/main.rs

# Build the real application.
COPY src ./src
COPY migrations ./migrations
# Touch main.rs so Cargo detects the change and recompiles.
RUN touch src/main.rs \
    && cargo build --release

# ── Runtime stage ─────────────────────────────────────────────────────────────
FROM debian:bookworm-slim

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

WORKDIR /app
COPY --from=builder /build/target/release/mikebase ./mikebase
COPY migrations ./migrations

EXPOSE 3000

HEALTHCHECK --interval=30s --timeout=5s --start-period=5s --retries=3 \
    CMD curl -f http://localhost:3000/health || exit 1

ENTRYPOINT ["./mikebase"]