# Lint stage — fast feedback on formatting and lint issues
# golangci/golangci-lint:v2.12.2 (Debian-based), 2026-08-07
FROM golangci/golangci-lint:v2.12.2@sha256:5cceeef04e53efe1470638d4b4b4f5ceefd574955ab3941b2d9a68a8c9ad5240 AS lint

WORKDIR /src
COPY go.mod go.sum ./
RUN go mod download

COPY . .

# Touch .pb.go so make does not try to regenerate via protoc (file is committed)
RUN touch mfer/mf.pb.go

# Go half of fmt-check only: this image has no node, so no prettier. The
# markdown half runs in the mdfmt stage below.
RUN make fmt-check-go
RUN make lint

# Markdown/JSON format stage — prettier needs node, which the Go images
# do not have. node:22.17.0-bookworm-slim (2026-08-09); ships node
# 22.17.0 and yarn 1.22.22, the versions script/bootstrap pins.
FROM node@sha256:b04ce4ae4e95b522112c2e5c52f781471a5cbc3b594527bcddedee9bc48c03a0 AS mdfmt

WORKDIR /src
COPY package.json yarn.lock ./
RUN yarn install --frozen-lockfile

COPY . .

# No make in this image; call the script entrypoint directly.
RUN script/prettier --check

# Build stage — tests and compilation
# golang:1.23 (2026-03-14)
FROM golang@sha256:60deed95d3888cc5e4d9ff8a10c54e5edc008c6ae3fba6187be6fb592e19e8c0 AS builder

# Force BuildKit to run the lint and mdfmt stages by creating stage dependencies
COPY --from=lint /src/go.sum /dev/null
COPY --from=mdfmt /src/go.sum /dev/null

WORKDIR /src
COPY go.mod go.sum ./
RUN go mod download

COPY . .

# Touch .pb.go so make does not try to regenerate via protoc (file is committed)
RUN touch mfer/mf.pb.go

RUN make test

# A build context sent as a tar archive, as upaas sends it, keeps its files'
# owners, and git refuses to read a checkout owned by another user.
RUN git config --system --add safe.directory /src

# The revision `mfer version` prints, stamped into main.Gitrev: the VERSION
# build argument when one is given (script/docker passes one), otherwise
# `git describe --tags --always` of the .git the build context carries: the
# tag on a tagged commit, tag-N-gHASH on a commit after one, the short commit
# when no tag is reachable. git ships in this base image. A context that
# carries .git and still yields no version fails the build.
ARG VERSION
RUN version="${VERSION:-$(git describe --tags --always)}"; \
    if [ -e .git ] && { [ -z "$version" ] || [ "$version" = dev ] || \
        [ "$version" = unknown ]; }; then \
        echo "no version could be derived although the build context carries .git" >&2; \
        exit 1; \
    fi; \
    cd cmd/mfer && \
    go build -tags urfave_cli_no_docs -ldflags "-X main.Gitrev=$version" -o /mfer .

FROM scratch
COPY --from=builder /mfer /mfer
ENTRYPOINT ["/mfer"]