#!/usr/bin/env bash
# Runs `make android` inside the local android-builder image, mirroring
# what the Gitea Actions build workflow does - useful for testing
# build-image/ changes locally before pushing anything to a registry.
#
# Usage: ./run-image.sh [VERSION]
#   VERSION is passed through to `make android` (see the Makefile's
#   `android` target); omit it for its own git-tag-based default.
set -euo pipefail

cd "$(dirname "${BASH_SOURCE[0]}")"
ROOT="$(pwd)"

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

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

IMAGE="${REGISTRY_ANDROID_IMAGE:-cr.ladkau.de/fuelish/android-builder}"
if [ -f "$ROOT/registry.env" ]; then
    # shellcheck disable=SC1091
    source "$ROOT/registry.env"
    IMAGE="${REGISTRY_ANDROID_IMAGE:-$IMAGE}"
fi

IMAGE_TAG="$(<"$ROOT/build-image/VERSION")"
[ -n "$IMAGE_TAG" ] || fail "build-image/VERSION is empty"
IMAGE="$IMAGE:$IMAGE_TAG"

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

VERSION="${1:-${VERSION:-}}"

# CI always starts from a fresh checkout, but this script bind-mounts the
# live host repo - so build output left over from a previous local run
# (dist/, android/build, the generated app icon/splash resources) would
# make this run skip work a real fresh checkout wouldn't, silently hiding
# bugs that only show up in CI. Wipe them first so every run exercises a
# true from-scratch build, same as CI.
echo "== Cleaning generated build artifacts for a fresh build =="
rm -rf \
    "$ROOT/dist" "$ROOT/android/build" "$ROOT/android/app/build" \
    "$ROOT/android/app/src/main/res/drawable-nodpi" \
    "$ROOT/android/app/src/main/res"/mipmap-mdpi "$ROOT/android/app/src/main/res"/mipmap-hdpi \
    "$ROOT/android/app/src/main/res"/mipmap-xhdpi "$ROOT/android/app/src/main/res"/mipmap-xxhdpi \
    "$ROOT/android/app/src/main/res"/mipmap-xxxhdpi

echo "== Running make android inside $IMAGE =="
# The container runs as root (needed for the SDK/Gradle caches baked into
# the image), so anything it writes into this bind mount - dist/,
# android/build, android/.gradle, etc. - would otherwise come back owned
# by root, leaving the host repo unusable without sudo. Chown everything
# back to the host user on exit, whether the build succeeds or fails.
docker run --rm \
    -v "$ROOT:/workspace" \
    -w /workspace \
    -e VERSION="$VERSION" \
    -e HOST_UID="$(id -u)" \
    -e HOST_GID="$(id -g)" \
    "$IMAGE" \
    bash -c '
        git config --global --add safe.directory /workspace
        trap "chown -R \"$HOST_UID:$HOST_GID\" /workspace" EXIT
        make android
    '

echo "== Done - artifact in dist/ =="
ls -la "$ROOT/dist"