#!/usr/bin/env bash
# Give build artifacts back to the human who owns the working tree.
#
# TRACES: | DR-213
#
# The containerised builds (docker-compose.yml: desktop-linux-build,
# windows-cross, android-build, test, dev) bind-mount the repo at /app and run
# as root, because their caches live at /root/.cargo and /root/.bun. Everything
# they write into src-tauri/target and dist/ is therefore root-owned *on the
# host* — and it accumulates: one audit found 11,124 such files, which is enough
# to make `cargo clean` and scripts/clean.sh fail with EACCES for the developer.
# Worse, a plain `cargo build` then dies part-way through, because build scripts
# compile for the host and land in target/debug even during a cross-build.
#
# Running the containers as the host uid would be the tidier fix, but it needs
# the cache volumes relocated off /root first. Until that happens, this restores
# ownership at the end of each containerised build, which is self-healing and
# needs no uid plumbing on the host side.
#
# Outside a container this is a no-op: it exits immediately unless it is running
# as root, so the native build scripts can call it unconditionally.

set -uo pipefail

# Not root (a normal developer build) — nothing to fix, and nothing we may fix.
[ "$(id -u)" -eq 0 ] || exit 0

cd "$(dirname "$0")/.."
REPO_ROOT="$(pwd)"

# Whoever owns the checkout is who the artifacts should belong to. Reading it
# from the tree means this works for any uid/gid without being told, including
# CI runners whose uid we do not control.
OWNER="$(stat -c '%u:%g' "$REPO_ROOT")"

# uid 0 owning the tree means it is not a bind mount from a normal host account
# (a root-owned checkout, or a CI image that clones as root). Nothing to give back.
if [ "${OWNER%%:*}" = "0" ]; then
  exit 0
fi

echo ""
echo "🔑 Restoring ownership of build artifacts to ${OWNER}…"

for target in src-tauri/target src-tauri/gen dist build node_modules .svelte-kit; do
  [ -e "$REPO_ROOT/$target" ] || continue
  chown -R "$OWNER" "$REPO_ROOT/$target" 2>/dev/null || {
    echo "⚠️  Could not fully chown $target — you may need:"
    echo "     sudo chown -R $OWNER $REPO_ROOT/$target"
  }
done

echo "✅ Ownership restored."