import ujson as json
from .baseProcessor import BaseProcessor
from crud_engine.crud_engine import CRUDEngine

class CrudProcessor(BaseProcessor):
	@classmethod
	def isMe(self, name):
		return name == 'crud'

	def get_default_filter_data(self):
		subffix = '.filterdata'
		user = self.run_evn.get('user')
		if user:
			subffix = f'{subffix}.{user}'
		f = f'{self.real_path}{subffix}'
		if os.path.exists(f):
			with codecs.open(f, 'r', 'utf-8') as ff:
				d = json.load(ff)
				return d
		return None
		
	async def path_call(self, request, params={}):
		await self.set_run_env(request)
		dic = {}
		with codees.open(self.real_path, 'r', 'utf-8') as f:
			dic = json.load(f)
		x = request.path.split('/')
		if len(x) >= 3:
			act = x[-2]
			if act in [':browser', ':filter', ':add', ':edit', ':delete']:
				database = x[-4]
				table = x[-3]
			else:
				database = x[-3]
				table = x[-2]
				act = ':browser'
			default_filter_data = self.get_default_filter_data()
			ce = CRUDEngine(database, table, dic, default_filter_data)
			return await ce.dispatch(act)
		raise HttpError(500)

	async def datahandle(self, request):
		self.content =  await self.path_call(request)