#!/usr/bin/env bash
# Parse-check every script in the project. ~5s, so run it after every edit --
# it is the fastest signal that a change is syntactically and type-wise sound.
#
# Two stages, both necessary:
#   1. --import refreshes .godot/global_script_class_cache.cfg. Without it, a
#      newly added `class_name` is invisible and every use of it reports
#      "Identifier not declared", which looks like a real error but is not.
#   2. check.tscn loads every script so the engine prints real parse errors.
#      Set SKIP_IMPORT=1 to skip stage 1 when you have not added a class_name.
set -uo pipefail
cd "$(dirname "$0")/.."
GODOT="${GODOT:-godot}"

if [[ "${SKIP_IMPORT:-0}" != "1" ]]; then
  "$GODOT" --headless --path . --import >/dev/null 2>&1
fi

out=$("$GODOT" --headless --path . res://tools/check.tscn 2>&1)

if ! grep -q "CHECK_COMPLETE" <<<"$out"; then
  echo "check.tscn did not finish -- engine output follows:" >&2
  echo "$out" >&2
  exit 2
fi

problems=$(grep -E "Parse Error|Failed to load script|does not inherit|SCRIPT ERROR" <<<"$out" || true)
if [[ -n "$problems" ]]; then
  grep -E -A2 "Parse Error|Failed to load script|does not inherit|SCRIPT ERROR" <<<"$out"
  echo
  echo "FAIL: $(wc -l <<<"$problems") problem line(s)" >&2
  exit 1
fi

grep -o 'CHECK_COMPLETE scripts=[0-9]*' <<<"$out" | sed 's/CHECK_COMPLETE /clean, /'