extends SceneTree

var test_scripts: Array[String] = []
var test_index: int = 0
var total_passed: int = 0
var total_failed: int = 0

func _init():
    print("\n=== GODOT TEST RUNNER ===\n")
    _discover_tests()
    
    if test_scripts.is_empty():
        print("[ERROR] No test scripts found in res://tests/")
        print("[RESULT] FAIL")
        quit(1)
        return
    
    print("Found %d test(s): %s\n" % [test_scripts.size(), str(test_scripts)])
    
    await _run_next_test()
    
    print("\n=== TEST SUMMARY ===")
    print("Total passed: %d" % total_passed)
    print("Total failed: %d" % total_failed)
    
    if total_failed == 0:
        print("[OVERALL_RESULT] PASS")
        quit(0)
    else:
        print("[OVERALL_RESULT] FAIL")
        quit(1)

func _discover_tests() -> void:
    var dir = DirAccess.open("res://tests")
    if dir:
        dir.list_dir_begin()
        var file_name = dir.get_next()
        while file_name != "":
            if file_name.ends_with(".gd") and file_name.begins_with("test_") and \
               file_name != "test_runner.gd" and file_name != "test_utils.gd":
                test_scripts.append("res://tests/%s" % file_name)
            file_name = dir.get_next()
        dir.list_dir_end()
    test_scripts.sort()

func _run_next_test() -> void:
    if test_index >= test_scripts.size():
        return
    
    var test_script = test_scripts[test_index]
    print("--- Running test %d/%d: %s ---" % [test_index + 1, test_scripts.size(), test_script])
    print("")
    
    # Load and run test
    var test_instance = load(test_script).new()
    get_root().add_child(test_instance)
    
    # Check if test has run() method (new pattern) or uses _ready() (old pattern)
    if test_instance.has_method("run"):
        await test_instance.run()
        # Clean up test instance
        test_instance.queue_free()
    else:
        # For old pattern, wait a bit for _ready() to complete
        await create_timer(0.2).timeout
        # Clean up test instance
        test_instance.queue_free()
    
    # Get results if available
    if test_instance.has_method("get_passed"):
        total_passed += test_instance.get_passed()
        total_failed += test_instance.get_failed()
    
    # Wait for cleanup
    await create_timer(0.1).timeout
    
    print("")
    test_index += 1
    await _run_next_test()