ARG RUST_VERSION=1.98
ARG BUN_VERSION=1.4.2
ARG TRUNK_VERSION=0.21.14
ARG ALPINE_VERSION=3.24

# ── build ────────────────────────────────────────────────────────────────────
FROM rust:${RUST_VERSION}-alpine${ALPINE_VERSION} AS build

# re-declare the build-args: args set before FROM do not carry into stages
ARG BUN_VERSION
ARG TRUNK_VERSION

# binaryen so trunk uses the system wasm-opt instead of downloading a glibc binary that cannot run on musl
# openssl-dev + openssl-libs-static for webauthn-rs, whose core crate links
# OpenSSL. The binary is static, so nothing is needed in the runtime image.
RUN apk add --no-cache curl ca-certificates musl-dev binaryen just \
        openssl-dev openssl-libs-static pkgconfig \
    && rustup target add wasm32-unknown-unknown

# bun
COPY --from=oven/bun:${BUN_VERSION}-alpine /usr/local/bin/bun /usr/local/bin/bun

# trunk
RUN set -eux; \
    url=https://github.com/trunk-rs/trunk/releases/download/v${TRUNK_VERSION}/trunk-x86_64-unknown-linux-musl.tar.gz; \
    curl -fsSL -o /tmp/trunk.tar.gz "${url}"; \
    curl -fsSL "${url}.sha256" | awk '{print $1 "  /tmp/trunk.tar.gz"}' | sha256sum -c -; \
    tar xzf /tmp/trunk.tar.gz -C /usr/local/bin; \
    rm -f /tmp/trunk.tar.gz

WORKDIR /src
COPY . /src

# build
RUN --mount=type=cache,target=/usr/local/cargo/registry \
    --mount=type=cache,target=/src/target \
    just build \
    && cp target/release/filebrowser-ng /filebrowser-ng

# ── prebuilt ─────────────────────────────────────────────────────────────────
# CI has the binary already. It puts it at ci-bin/filebrowser-ng and selects
# this stage with --build-arg BIN_STAGE=prebuilt. BuildKit and buildah do not
# build a stage nobody references, so a normal build needs no ci-bin/.
FROM scratch AS prebuilt
COPY ci-bin/filebrowser-ng /filebrowser-ng

# ── runtime ──────────────────────────────────────────────────────────────────
FROM alpine:${ALPINE_VERSION}

ARG BIN_STAGE=build

# ffmpeg is only for video thumbnails, and it is most of the image: it pulls
# ~120 MiB of codec libraries against 8 MiB for the rest
RUN apk add --no-cache ca-certificates ffmpeg \
    && mkdir -p /data /var/lib/filebrowser /var/cache/filebrowser

COPY --from=${BIN_STAGE} /filebrowser-ng /usr/local/bin/filebrowser-ng

EXPOSE 8080
VOLUME ["/data", "/var/lib/filebrowser"]

HEALTHCHECK --interval=30s --start-period=10s --timeout=5s --retries=3 \
    CMD wget -qO /dev/null http://127.0.0.1:8080/ || exit 1

ENTRYPOINT ["/usr/local/bin/filebrowser-ng"]
CMD ["--root", "/data", "--db", "/var/lib/filebrowser/db.sqlite", "--bind", "0.0.0.0"]