# Host tools every JoeyLib setup needs: a native compiler for the in-repo
# tools, GNU make, git with LFS (the sample assets live in LFS), the
# archive tools the other components unpack with, Python 3 with Pillow
# for the asset converters, and socat for joey-run's serial bridging.

compDescription="host tools: make, host compiler, git-lfs, python3 + Pillow, archivers, socat"
# Not in any port group: every other component requires it.
compGroups="host"
compRequires=""
compHostDeps="build-tools make git git-lfs curl tar xz bzip2 unzip lhasa python3 python3-pil procps diffutils socat"
compPin="1"


# Print the LFS-tracked files that are still pointer stubs.
lfsPointerFiles() {
    local file
    local names
    local start
    names="$(git -C "$JOEY_REPO" lfs ls-files --name-only 2>/dev/null || true)"
    while IFS= read -r file; do
        [ -n "$file" ] || continue
        # A pointer stub starts with this 23-byte line; read just that much
        # (binary assets hold NUL bytes a command substitution would warn about).
        start=""
        IFS= read -r -N 23 start < "$JOEY_REPO/$file" 2>/dev/null || true
        if [[ "$start" == "version https://git-lfs"* ]]; then
            printf '%s\n' "$file"
        fi
    done <<< "$names"
}


compInstall() {
    mkdir -p "$compDir"
    # A clone made without git-lfs holds pointer stubs instead of the
    # sample assets; fetch the real files only in that case.
    if [ -d "$JOEY_REPO/.git" ] && [ -n "$(lfsPointerFiles)" ]; then
        info "fetching Git LFS assets"
        git -C "$JOEY_REPO" lfs install --local
        git -C "$JOEY_REPO" lfs pull
    fi
}


compInstalled() {
    command -v make >/dev/null && command -v cc >/dev/null && command -v python3 >/dev/null && command -v git-lfs >/dev/null
}


compVerify() {
    local makeVersion
    local stubs
    # No pipes into head here: under pipefail an early-exiting reader makes
    # the writer die of SIGPIPE, and the check fails at random.
    makeVersion="$(make --version 2>/dev/null || true)"
    [[ "$makeVersion" =~ ([0-9]+\.[0-9]+) ]] && makeVersion="${BASH_REMATCH[1]}"
    # Grouped targets (&:) in the port makefiles need GNU make 4.3.
    printf '%s\n4.3\n' "$makeVersion" | sort -V -C -r || { warn "GNU make $makeVersion is older than 4.3"; return 1; }
    python3 -c 'import PIL' || { warn "python3 cannot import PIL (Pillow)"; return 1; }
    stubs="$(lfsPointerFiles | wc -l)"
    [ "$stubs" = "0" ] || { warn "$stubs Git LFS files are still pointer stubs"; return 1; }
}


compEnv() {
    :
}