#!/usr/bin/env bash
# Builds and runs modding/src/animgallery/ (see README.md section 4) inside
# the mdlp-image's Go toolchain - animgallery has no cgo dependencies of its
# own, so it reuses that image rather than needing one of its own.
#
# Every argument is forwarded verbatim to animgallery itself. -data is
# repeatable and layers directories in the order given, later wins - the
# whole repository is mounted at /workspace here, so paths are relative to
# the repository root, for example:
#
#   ./gen_animgallery.sh -data res/assets/ss_ee/data -out modding/build/gallery
#   ./gen_animgallery.sh -data res/assets/ss_ee/data \
#       -data modding/dist/mods/mymod/mod -out modding/build/gallery-mymod
set -euo pipefail

cd "$(dirname "${BASH_SOURCE[0]}")"
MODDING_ROOT="$(pwd)"
REPO_ROOT="$(cd .. && pwd)"

fail() { echo "PREFLIGHT FAIL: $*" >&2; exit 1; }

command -v docker >/dev/null 2>&1 \
    || fail "docker not found in PATH"

IMAGE="${MDLP_REGISTRY_IMAGE:-questshock/mdlp}"
if [ -f "$MODDING_ROOT/../registry.env" ]; then
    # shellcheck disable=SC1091
    source "$MODDING_ROOT/../registry.env"
    IMAGE="${MDLP_REGISTRY_IMAGE:-$IMAGE}"
fi
IMAGE_TAG="$(<"$MODDING_ROOT/mdlp-image/VERSION")"
[ -n "$IMAGE_TAG" ] || fail "mdlp-image/VERSION is empty"
IMAGE="$IMAGE:$IMAGE_TAG"

docker image inspect "$IMAGE" >/dev/null 2>&1 \
    || fail "$IMAGE not found locally - run ./mdlp-image.sh first"

TTY_FLAGS="-i"
[ -t 1 ] && TTY_FLAGS="-it"

# shellcheck disable=SC2086
docker run --rm $TTY_FLAGS \
    -v "$REPO_ROOT:/workspace" \
    -w /workspace \
    -e HOST_UID="$(id -u)" \
    -e HOST_GID="$(id -g)" \
    "$IMAGE" \
    bash -c '
        set -euo pipefail
        # animgallery, like mdlp, builds against ../hacked via its own
        # go.mod replace - stage a patched copy (see src/hacked-patches/)
        # rather than building against the unpatched vendored source.
        SCRATCH_DIR="modding/build/animgallery-src"
        rm -rf "$SCRATCH_DIR"
        mkdir -p "$SCRATCH_DIR"
        bash modding/mdlp-image/stage-hacked.sh modding "$SCRATCH_DIR/hacked"
        cp -a modding/src/animgallery "$SCRATCH_DIR/animgallery"
        (cd "$SCRATCH_DIR/animgallery" && go build -o /tmp/animgallery .)
        exec /tmp/animgallery "$@"
    ' _ "$@"