#!/usr/bin/env bash
# Builds the app inside a Debian container and stages an install in build/<preset>/stage,
# ready to copy to the Steam Frame.
#
#   scripts/container-build.sh cross          x86_64 host → aarch64, uses the target's
#                                             system Qt 6.8.x (default way to deploy)
#   scripts/container-build.sh native         same for the host's own architecture
#                                             (run on the Frame for a native arm64 build)
#   scripts/container-build.sh cross-bundle / native-bundle
#                                             self-contained: Qt bundled (fallback if the
#                                             target's Qt doesn't fit)
#   scripts/container-build.sh <mode> shell   interactive shell in that container
#
# Uses podman if available, else docker (override with CONTAINER_ENGINE).
set -euo pipefail

root="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
mode="${1:-}"
case "$mode" in
    cross)         dockerfile=cross-arm64.Dockerfile; preset=cross-arm64 ;;
    native)        dockerfile=native.Dockerfile;      preset=native-systemqt ;;
    cross-bundle)  dockerfile=cross-arm64.Dockerfile; preset=cross-arm64-bundle ;;
    native-bundle) dockerfile=native.Dockerfile;      preset=native-bundle ;;
    *) echo "usage: $0 cross|native|cross-bundle|native-bundle [shell]" >&2; exit 2 ;;
esac
image="frameassistant-build-${dockerfile%.Dockerfile}"
engine="${CONTAINER_ENGINE:-$(command -v podman || command -v docker)}"

"$engine" build -q -t "$image" -f "$root/docker/$dockerfile" "$root/docker" >/dev/null

run=("$engine" run --rm -v "$root:$root:z" -w "$root")
if [[ "$(basename "$engine")" == docker ]]; then
    run+=(--user "$(id -u):$(id -g)")
else
    run+=(--userns=keep-id)
fi
[[ -t 0 ]] && run+=(-it)

if [[ "${2:-}" == shell ]]; then
    exec "${run[@]}" "$image" bash
fi

"${run[@]}" "$image" bash -c "
    set -e
    cmake --preset $preset
    cmake --build --preset $preset
    rm -rf build/$preset/stage
    cmake --install build/$preset --prefix build/$preset/stage
"
echo "Staged: $root/build/$preset/stage"