import json
import logging

import os
import shutil
import tempfile
import typing

import requests

log: logging.Logger = logging.getLogger(__name__)


class Client:
	host: str = ""
	cookies: typing.Dict[str, str] = {}
	headers: typing.Dict[str, str] = {}

	def url(self, path):
		if self.host:
			return self.host + path
		return path

	def get(self, url, **kwargs) -> requests.models.Response:
		log.info("GET " + str(url))
		return requests.get(self.url(url), cookies=self.cookies, headers=self.headers, **kwargs)

	def post(self, url, data, **kwargs) -> requests.models.Response:
		log.info("POST " + str(url))
		return requests.post(self.url(url), data, cookies=self.cookies, headers=self.headers, **kwargs)

	def download_file(self, url, target, **kwargs) -> bool:
		with open(target, "wb") as out:
			try:
				download = self.get(url, stream=True, **kwargs)
				shutil.copyfileobj(download.raw, out)
			except Exception as e:
				log.exception(e)
				os.remove(target)
				return False
		return True

	def download_files(self, urls, **kwargs) -> tempfile.TemporaryDirectory:
		target = tempfile.TemporaryDirectory()
		for path in urls:
			filename = os.path.join(target.name, path.split("/")[-1])
			self.download_file(path, filename, **kwargs)
		return target

	def login(self):
		pass

	def list(self):
		pass


class BiogamesClient(Client):
	config_fields: typing.Dict[str, typing.List[str]] = {
		'login': ('username', 'password', 'host'),
		'session': ('sessionid', 'csrftoken', 'host'),
	}
	login_url: str = "/game2/auth/json-login"
	list_url: str = "/game2/instance/log/list/"
	headers: typing.Dict[str, str] = {'Accept': 'application/json'}

	def __init__(self, **kwargs):
		match = {j: all([i in kwargs for i in self.config_fields[j]]) for j in self.config_fields}
		valid = filter(lambda x: match[x], match)
		if not valid:
			raise ValueError("missing parameter (" + str(self.config_fields) + ")")
		self.config = kwargs
		self.cookies = {}
		self.host = self.config['host']
		if 'session' in valid:
			self.cookies = kwargs

	def login(self) -> bool:
		csrf_request = self.get(self.list_url)
		if not csrf_request.ok:
			log.exception(ConnectionError("Unable to obtain CSRF token (" + str(csrf_request) + ")"))
			return False
		if not 'csrftoken' in self.cookies:
			self.cookies['csrftoken'] = csrf_request.cookies['csrftoken']
		login_payload = {
			'username': self.config['username'],
			'password': self.config['password'],
			'next': '',
			'csrfmiddlewaretoken': 'csrftoken',
		}
		login = self.post(self.login_url, json.dumps(login_payload))
		if not login.ok:
			log.exception(ConnectionError("Unable to authenticate", login, login.text))
			return False
		self.cookies['sessionid'] = login.cookies['sessionid']
		print(self.cookies)
		return True

	def list(self) -> dict:
		print(self.cookies)
		logs = self.get(self.list_url)
		if not logs.ok:
			raise ConnectionError("HTTP fail", logs, logs.text)
		return logs.json()

	def load_all_logs(self) -> tempfile.TemporaryDirectory:
		return self.download_files([i["file_url"] for i in self.list()])


CLIENTS: typing.Dict[str, typing.Type[Client]] = {
	"Biogames": BiogamesClient,
}

if __name__ == '__main__':
	# c = BiogamesClient(host="http://biodiv", username="ba", password="853451")
	# print(c.login())
	# print(json.dumps(c.list(), indent=1))
	# print(type(c.load_all_logs()))
	# print(type(c.get("/")))
	c = BiogamesClient(host="http://biodiv", **{'csrftoken': 'IgbwP83iEibW6RE7IADIFELYdbx0dvqQ',
												'sessionid': 'zntsj09d92tjos1b6ruqjthlzv60xdin'})
	print(json.dumps(c.list(), indent=1))