#!/bin/sh
# build.sh — example custom build script for zeta-makepkg.
#
# Invoked from the extracted source directory.  The tool sets:
#   $DESTDIR  → staging tree root (e.g. /tmp/zeta-makepkg/hooks-demo-.../stage)
#
# This script installs a small command under usr/bin/ and a post-transaction
# hook under usr/share/zeta/hooks/.  A hook is a pure-data Lua file:
#
#   return {
#     order   = 50,
#     trigger = { op = "install", type = "package", target = { "hooks-demo" } },
#     action  = { when = "post", exec = "true", description = "example hook" },
#   }
#
# zeta-makepkg scans the stage for usr/share/zeta/hooks/*.hook, validates the
# format, and merges the paths into the generated `files` whitelist.

set -eu

echo "==> Building hooks-demo (custom)"

# Install a tiny command
mkdir -p "$DESTDIR/usr/bin"
cat > "$DESTDIR/usr/bin/hooks-demo" <<'EOF'
#!/bin/sh
echo "hooks-demo: post-transaction hooks are working"
EOF
chmod 755 "$DESTDIR/usr/bin/hooks-demo"

# Install a post-transaction hook (pure data, no side effects)
mkdir -p "$DESTDIR/usr/share/zeta/hooks"
cat > "$DESTDIR/usr/share/zeta/hooks/hooks-demo.hook" <<'EOF'
return {
  order   = 50,
  trigger = { op = "install", type = "package", target = { "hooks-demo" } },
  action  = { when = "post", exec = "true", description = "example hook" },
}
EOF

echo "==> Install complete"