from copy import deepcopy


def merge_update(_old, _new):
	for k, v in _new.items():
		if isinstance(v, dict):
			r = merge_update(_old.get(k, {}), v)
			_old[k] = r
		else:
			if isinstance(_old, dict):
				_old[k] = _new[k]
			else:
				_old = _new
	return _old


def merge_add(_old, _new):
	for k, v in _new.items():
		if isinstance(v, dict):
			r = merge_add(_old.get(k, {}), v)
			if k in _old:
				_old[k].update(r)
			else:
				_old[k] = r
		else:
			_old[k] = _new[k]
	return _old


def merge_delete(_old, _new):
	for k, v in list(_new.items()):
		if isinstance(v, dict) and v:
			if k in _old and isinstance(_old[k], dict):
				merge_delete(_old[k], v)
		else:
			if k in _old:
				del _old[k]
	return _old


def merge_full(_old, _diff):
	_is_diff = False
	res = _old
	if "update" in _diff:
		res = merge_update(res, _diff['update'])
		_is_diff = True
	if "update_add" in _diff:
		res = merge_update(res, _diff['update_add'])
		_is_diff = True
	if "add" in _diff:
		res = merge_add(res, _diff['add'])
		_is_diff = True
	if "delete" in _diff:
		res = merge_delete(res, _diff['delete'])
		_is_diff = True

	if not _is_diff and not _old:
		res = _diff

	return res

def _legacy_assertions() -> None:
	# Merge
	result = merge_add({}, {'a': 'hamburger', 'b': 'fries', 'c': {'e': 'coke', 'f': 'coffee'}})
	assert result == {'a':'hamburger', 'b':'fries', 'c': {'e': 'coke', 'f': 'coffee'}}

	result = merge_add({'a': 'hamburger', 'b': 'fries', 'c': {'e': 'coke', 'f': 'coffee'}}, {'d': 'icecream'})
	assert result == {'a':'hamburger', 'b':'fries', 'c': {'e': 'coke', 'f': 'coffee'}, 'd':'icecream'}

	result = merge_add({'a': 'hamburger', 'b': 'fries', 'c': {'f': 'coffee'}}, {'d': 'icecream'})
	assert result == {'a':'hamburger', 'b':'fries', 'c': {'f': 'coffee'}, 'd':'icecream'}

	result = merge_add({'a': 'hamburger', 'b': 'fries', 'c': {'f': 'coffee'}, 'd': 'icecream'}, {'d': 'icecream'})
	assert result == {'a':'hamburger', 'b':'fries', 'c': {'f': 'coffee'}, 'd':'icecream'}

	result = merge_delete({'a': 'hamburger', 'b': 'fries', 'c': {'e': 'coke', 'f': 'coffee'}, 'd': 'icecream'}, {'d': 'icecream'})
	assert result == {'a':'hamburger', 'b':'fries', 'c': {'e': 'coke', 'f': 'coffee'}}

	result = merge_delete({'a': 'hamburger', 'b': 'fries', 'c': {'e': 'coke', 'f': 'coffee'}}, {'c': {'f': 'coffee'}})
	assert result == {'a':'hamburger', 'b':'fries', 'c': {'e': 'coke'}}

	result = merge_delete({'a': 'hamburger', 'b': 'fries', 'c': {'e': 'coke', 'f': 'coffee'}}, {'c': {'e': 'coke'}})
	assert result == {'a':'hamburger', 'b':'fries', 'c': {'f': 'coffee'}}

	# merge_full
	# the no-jaydiff case
	result = merge_full({}, {'a': 'hamburger', 'b': 'fries', 'c': {'e': 'coke', 'f': 'coffee'}})
	assert result == {'a': 'hamburger', 'b': 'fries', 'c': {'e': 'coke', 'f': 'coffee'}}

	# combine_upd_add = False
	result = merge_full({'a': 'hamburger', 'b': 'fries', 'c': {'e': 'coke', 'f': 'coffee'}}, {'add': {'a': 'hamburger', 'b': 'fries', 'c': {'e': 'coke', 'f': 'coffee'}}})
	assert result == {'a': 'hamburger', 'b': 'fries', 'c': {'e': 'coke', 'f': 'coffee'}}

	result = merge_full({'a': 'hamburger', 'b': 'fries', 'c': 'coke'}, {'update': {'c': 'pepsi'}})
	assert result == {'a': 'hamburger', 'b': 'fries', 'c': 'pepsi'}

	result = merge_full({'a': 'hamburger', 'b': 'fries', 'c': 'pepsi', 'd': 'icecream'}, {'delete': {'d': 'icecream'}})
	assert result == {'a': 'hamburger', 'b': 'fries', 'c': 'pepsi'}

	result = merge_full({'a': 'hamburger', 'b': 'fries', 'c': 'pepsi'}, {'add': {'d': 'icecream'}, 'delete': {'b': 'fries'}, 'update': {'c': 'coke'}})
	assert result == {'a': 'hamburger', 'd': 'icecream', 'c': 'coke'}

	result = merge_full({'a': 'hamburger', 'c': 'pepsi', 'd': 'icecream'}, {'add': {'b': 'fries'}, 'delete': {'d': 'icecream'}, 'update': {'c': 'coke'}})
	assert result == {'a': 'hamburger', 'b': 'fries', 'c': 'coke'}

	result = merge_full({'a': 'hamburger', 'b': 'fries', 'c': {'e': 'coke'}}, {'add': {'c': {'f': 'coffee'}}, 'delete': {'a': 'hamburger', 'b': 'fries', 'c': {'e': 'coke'}}})
	assert result == {'c': {'f': 'coffee'}}

	result = merge_full({'a': 'hamburger', 'c': 'pepsi', 'd': 'icecream'}, {'add': {'b': 'fries'}, 'delete': {'d': 'icecream'}, 'update': {'c': 'coke'}})
	assert result == {'a': 'hamburger', 'b': 'fries', 'c': 'coke'}

	result = merge_full({'a': 'hamburger', 'b': 'fries', 'c': 'coke'}, {})
	assert result == {'a': 'hamburger', 'b': 'fries', 'c': 'coke'}

	result = merge_full({'a': 'hamburger', 'b': 'fries', 'c': 'coke'}, {'update': {'c': 'pepsi'}})
	assert result == {'a': 'hamburger', 'b': 'fries', 'c': 'pepsi'}

	result = merge_full({'a': 'hamburger', 'b': 'fries', 'c': 'pepsi'}, {'delete': {'c': 'pepsi'}})
	assert result == {'a': 'hamburger', 'b': 'fries'}

	result = merge_full({'a': 'hamburger', 'b': 'fries', 'c': 'pepsi'}, {'update': {'c': 'coke'}})
	assert result == {'a': 'hamburger', 'b': 'fries', 'c': 'coke'}

	result = merge_full({'a': 'hamburger', 'b': 'fries', 'c': {'e': 'coke', 'f': 'coffee'}}, {'delete': {'c': None}})
	assert result == {'a': 'hamburger', 'b': 'fries'}

	result = merge_full({'a': 'hamburger', 'b': 'fries', 'c': {'e': 'coke', 'f': 'coffee'}}, {'delete': {'c': {'e': 'coke'}}})
	assert result == {'a': 'hamburger', 'b': 'fries', 'c': {'f': 'coffee'}}

	result = merge_full({'a': 'hamburger', 'b': 'fries', 'c': {'e': 'coke', 'f': 'coffee'}}, {'delete': {'a': 'hamburger', 'b': 'fries', 'c': {'f': 'coffee'}}})
	assert result == {'c': {'e': 'coke'}}

	result = merge_full({'a':'hamburger', 'b':'fries', 'c': {'e': 'coke', 'f': 'coffee'}}, {'delete': {'c': None}, 'update': {'a': 'hotdog', 'b': 'potatoes'}})
	assert result == {'a':'hotdog', 'b':'potatoes'}

	result = merge_full({'a':'hamburger', 'b':'fries', 'c': {'e': 'coke', 'f': 'coffee'}}, {'delete': {'a': 'hamburger', 'b': 'fries', 'c': {'f': 'coffee'}}, 'update': {'c': {'e': 'pepsi'}}})
	assert result == {'c': {'e': 'pepsi'}}

	result = merge_full({'a':'hamburger', 'b':'fries', 'c': {'e': 'coke', 'f': 'coffee'}}, {'delete': {'c': None}, 'update': {'a': 'hotdog'}})
	assert result == {'a':'hotdog', 'b':'fries'}

	result = merge_full({'a':'hamburger', 'b':'fries', 'c': {'e': 'coke', 'f': 'coffee'}}, {'update': {'c': {'e': 'pepsi'}}})
	assert result == {'a':'hamburger', 'b':'fries', 'c': {'e': 'pepsi', 'f': 'coffee'}}

	result = merge_full({'a':'hamburger', 'b':'fries', 'c': {'e': 'coke', 'f': 'coffee'}}, {'add': {'d': 'icecream'}, 'delete': {'c': None}, 'update': {'a': 'hotdog', 'b': 'potatoes'}})
	assert result == {'a':'hotdog', 'b':'potatoes', 'd': 'icecream'}

	result = merge_full({'a':'hamburger', 'b':'fries', 'c': {'e': 'coke', 'f': 'coffee'}}, {'add': {'c': {'g': 'tea', 'h': 'cake'}}, 'delete': {'a': 'hamburger', 'c': {'f': 'coffee'}}, 'update': {'b': 'potatoes', 'c': {'e': 'pepsi'}}})
	assert result == {'c': {'e': 'pepsi', 'g': 'tea', 'h': 'cake'}, 'b':'potatoes'}

	result = merge_full({'a':'hamburger', 'b':'fries', 'c': {'e': 'coke', 'f': 'coffee'}}, {'delete': {'c': None}, 'update': {'a': 'hotdog'}})
	assert result == {'a':'hotdog', 'b':'fries'}

	result = merge_full({'a':'hamburger', 'b':'fries', 'c': {'e': 'coke', 'f': 'coffee'}}, {'update': {'c': {'e': 'pepsi'}}})
	assert result == {'a':'hamburger', 'b':'fries', 'c': {'e': 'pepsi', 'f': 'coffee'}}

	result = merge_full({'a':'hamburger', 'b':'fries', 'c': {'e': 'coke', 'f': 'coffee'}}, {'add': {'c': {'h': 'cake'}}, 'update': {'c': {'e': 'pepsi'}}})
	assert result == {'a':'hamburger', 'b':'fries', 'c': {'e': 'pepsi', 'f': 'coffee', 'h': 'cake'}}

	# ToDo: merge_full
	# combine_upd_add = True

	result = merge_full({}, {'update_add': {'a': 'hamburger', 'b': 'fries', 'c': {'e': 'coke', 'f': 'coffee'}}})
	assert result == {'a': 'hamburger', 'b': 'fries', 'c': {'e': 'coke', 'f': 'coffee'}}

	result = merge_full({'a': 'hamburger', 'b': 'fries', 'c': 'pepsi'}, {'update_add': {'c': 'coke'}})
	assert result == {'a': 'hamburger', 'b': 'fries', 'c': 'coke'}

	result = merge_full({'a': 'hamburger', 'b': 'fries', 'c': 'pepsi', 'd': 'icecream'}, {'delete': {'d': 'icecream'}})
	assert result == {'a': 'hamburger', 'b': 'fries', 'c': 'pepsi'}

	result = merge_full({'a': 'hamburger', 'b': 'fries', 'c': 'pepsi'}, {'delete': {'b': 'fries'}, 'update_add': {'c': 'coke', 'd': 'icecream'}})
	assert result == {'a': 'hamburger', 'd': 'icecream', 'c': 'coke'}

	result = merge_full({'a': 'hamburger', 'c': 'pepsi', 'd': 'icecream'}, {'delete': {'d': 'icecream'}, 'update_add': {'b': 'fries', 'c': 'coke'}})
	assert result == {'a': 'hamburger', 'b': 'fries', 'c': 'coke'}

	result = merge_full({'a': 'hamburger', 'b': 'fries', 'c': {'e': 'coke'}}, {'update_add': {'c': {'f': 'coffee'}}, 'delete': {'a': 'hamburger', 'b': 'fries', 'c': {'e': 'coke'}}})
	assert result == {'c': {'f': 'coffee'}}

	result = merge_full({'a': 'hamburger', 'c': 'pepsi', 'd': 'icecream'}, {'delete': {'d': 'icecream'}, 'update_add': {'b': 'fries', 'c': 'coke'}})
	assert result == {'a': 'hamburger', 'b': 'fries', 'c': 'coke'}

	result = merge_full({'a': 'hamburger', 'b': 'fries', 'c': 'coke'}, {})
	assert result == {'a': 'hamburger', 'b': 'fries', 'c': 'coke'}

	result = merge_full({'a': 'hamburger', 'b': 'fries', 'c': 'coke'}, {'update_add': {'c': 'pepsi'}})
	assert result == {'a': 'hamburger', 'b': 'fries', 'c': 'pepsi'}

	result = merge_full({'a': 'hamburger', 'b': 'fries', 'c': 'pepsi'}, {'delete': {'c': 'pepsi'}})
	assert result == {'a': 'hamburger', 'b': 'fries'}

	result = merge_full({'a': 'hamburger', 'b': 'fries', 'c': 'pepsi'}, {'update_add': {'c': 'coke'}})
	assert result == {'a': 'hamburger', 'b': 'fries', 'c': 'coke'}

	result = merge_full({'a': 'hamburger', 'b': 'fries', 'c': {'e': 'coke', 'f': 'coffee'}}, {'delete': {'c': None}})
	assert result == {'a': 'hamburger', 'b': 'fries'}

	result = merge_full({'a': 'hamburger', 'b': 'fries', 'c': {'e': 'coke', 'f': 'coffee'}}, {'delete': {'c': {'e': 'coke'}}})
	assert result == {'a': 'hamburger', 'b': 'fries', 'c': {'f': 'coffee'}}

	result = merge_full({'a': 'hamburger', 'b': 'fries', 'c': {'e': 'coke', 'f': 'coffee'}}, {'delete': {'a': 'hamburger', 'b': 'fries', 'c': {'f': 'coffee'}}})
	assert result == {'c': {'e': 'coke'}}

	result = merge_full({'a':'hamburger', 'b':'fries', 'c': {'e': 'coke', 'f': 'coffee'}}, {'delete': {'c': None}, 'update_add': {'a': 'hotdog', 'b': 'potatoes'}})
	assert result == {'a':'hotdog', 'b':'potatoes'}

	result = merge_full({'a':'hamburger', 'b':'fries', 'c': {'e': 'coke', 'f': 'coffee'}}, {'delete': {'a': 'hamburger', 'b': 'fries', 'c': {'f': 'coffee'}}, 'update_add': {'c': {'e': 'pepsi'}}})
	assert result == {'c': {'e': 'pepsi'}}

	result = merge_full({'a':'hamburger', 'b':'fries', 'c': {'e': 'coke', 'f': 'coffee'}}, {'delete': {'c': None}, 'update_add': {'a': 'hotdog'}})
	assert result == {'a':'hotdog', 'b':'fries'}

	result = merge_full({'a':'hamburger', 'b':'fries', 'c': {'e': 'coke', 'f': 'coffee'}}, {'update_add': {'c': {'e': 'pepsi'}}})
	assert result == {'a':'hamburger', 'b':'fries', 'c': {'e': 'pepsi', 'f': 'coffee'}}

	result = merge_full({'a':'hamburger', 'b':'fries', 'c': {'e': 'coke', 'f': 'coffee'}}, {'delete': {'c': None}, 'update_add': {'a': 'hotdog', 'b': 'potatoes', 'd': 'icecream'}})
	assert result == {'a':'hotdog', 'b':'potatoes', 'd': 'icecream'}

	result = merge_full({'a':'hamburger', 'b':'fries', 'c': {'e': 'coke', 'f': 'coffee'}}, {'delete': {'a': 'hamburger', 'c': {'f': 'coffee'}}, 'update_add': {'b': 'potatoes', 'c': {'e': 'pepsi', 'g': 'tea', 'h': 'cake'}}})
	assert result == {'b':'potatoes', 'c': {'e': 'pepsi', 'g': 'tea', 'h': 'cake'}}

	result = merge_full({'a':'hamburger', 'b':'fries', 'c': {'e': 'coke', 'f': 'coffee'}}, {'delete': {'c': None}, 'update_add': {'a': 'hotdog'}})
	assert result == {'a':'hotdog', 'b':'fries'}

	result = merge_full({'a':'hamburger', 'b':'fries', 'c': {'e': 'coke', 'f': 'coffee'}}, {'update_add': {'c': {'e': 'pepsi'}}})
	assert result == {'a':'hamburger', 'b':'fries', 'c': {'e': 'pepsi', 'f': 'coffee'}}

	result = merge_full({'a':'hamburger', 'b':'fries', 'c': {'e': 'coke', 'f': 'coffee'}}, {'update_add': {'c': {'e': 'pepsi', 'h': 'cake'}}})
	assert result == {'a':'hamburger', 'b':'fries', 'c': {'e': 'pepsi', 'f': 'coffee', 'h': 'cake'}}

	result = merge_full({}, {'add': {'a': 'hamburger', 'b': 'fries', 'c': {'e': 'coke', 'f': 'coffee'}}})
	assert result == {'a': 'hamburger', 'b': 'fries', 'c': {'e': 'coke', 'f': 'coffee'}}

	result = merge_full({}, {'add': {'a': 'hamburger', 'b': 'fries', 'c': {'e': 'coke', 'f': {'coffee': {'h': 'black'}}}}})
	assert result == {'a': 'hamburger', 'b': 'fries', 'c': {'e': 'coke', 'f': {'coffee': {'h': 'black'}}}}

	result = merge_full({'a': 'hamburger', 'b': 'fries', 'c': {'e': 'coke', 'f': {'coffee': {'h': 'black'}}}}, {'add': {'c': {'f': {'coffee': {'j': 'sugar'}}}}})
	assert result == {'a': 'hamburger', 'b': 'fries', 'c': {'e': 'coke', 'f': {'coffee': {'h': 'black', 'j': 'sugar'}}}}

	old = {'charging': {
		'batteryStatus': {'value': {'carCapturedTimestamp': '2024-10-19T05:34:34Z', 'cruisingRangeElectric_km': 192}},
		'chargingStatus': {'value': {'carCapturedTimestamp': '2024-10-19T05:34:34Z'}},
		'chargingSettings': {'value': {'carCapturedTimestamp': '2024-10-19T05:34:30Z'}},
		'plugStatus': {'value': {'carCapturedTimestamp': '2024-10-19T05:34:29Z'}}}}
	update = {'charging': {
		'batteryStatus': {'value': {'carCapturedTimestamp': '2024-10-19T05:35:46Z', 'cruisingRangeElectric_km': 191}},
		'chargingStatus': {'value': {'carCapturedTimestamp': '2024-10-19T05:35:46Z'}}}}
	add = {'charging': {
		'batteryStatus': {'value': {'currentSOC_pct': 55}}},
		'fuelStatus': {'rangeStatus': {'value': {'primaryEngine': {'currentSOC_pct': 55}}}},
		'measurements': {'fuelLevelStatus': {'value': {'currentSOC_pct': 55}}}}

	delete = {'charging': {
		'chargingSettings': {'value': {'carCapturedTimestamp': '2024-10-19T05:34:30Z'}},
		'plugStatus': {'value': {'carCapturedTimestamp': '2024-10-19T05:34:29Z'}}}}

	result = merge_full(old, {'update':update, 'add':add, 'delete':delete})
	assert result == old

if __name__ == '__main__':
	_legacy_assertions()