core.utils.mail

import json
from urllib.parse import quote_plus

import requests

from core.utils.external import NumpyEncoder

class Mail():
	"""
		The mail class provides the possibility to send mails via an API.
	"""

	_TOKEN = "sometoken"
	_API = "https://api.example.com/mail/send.php"
	
	DEFAULT_TO = "mail@example.com"
	"""
		The default to-address.
	"""

	DEFAULT_SUBJECT = "MA-Evaluation"
	"""
		The default subject.
	"""

	def _run_request(content, subject, to):
		url = Mail._API + "?" + '&'.join([
			"t=" + quote_plus(Mail._TOKEN),
			"to=" + quote_plus(to),
			"subject=" + quote_plus(subject)
		])
		try:
			r = requests.post(url, data={"content" : content}, timeout=5)
			ok = r.status_code == 200
		except:
			ok = False

		return ok

	def send(content, subject=None, to=None):
		"""
			Sends an e-mail.

			Args:
				content (string): The content of the mail as *plain text*
				subject (string): The subject of the mail, else will use `DEFAULT_SUBJECT`
				to (string): The receiver of the mail, else will use `DEFAULT_TO`

			Returns:
				bool if successful
		"""
		if subject == None:
			subject = Mail.DEFAULT_SUBJECT
		if to == None:
			to = Mail.DEFAULT_TO

		if not Mail._run_request(content, subject, to):
			print("Error while sending Mail!")
			return False
		else:
			return True

	def send_variable(variable, **kwargs):
		"""
			Sends an e-mail.

			Args:
				variable (dict, list, ...): The content of the mail to send, will be json-encoded to string
				**kwargs: passed to `send()`
			Returns:
				bool if successful
		"""
		return Mail.send(json.dumps(variable, indent=2, cls=NumpyEncoder), **kwargs)

class Mail():
	"""
		The mail class provides the possibility to send mails via an API.
	"""

	_TOKEN = "sometoken"
	_API = "https://api.example.com/mail/send.php"
	
	DEFAULT_TO = "mail@example.com"
	"""
		The default to-address.
	"""

	DEFAULT_SUBJECT = "MA-Evaluation"
	"""
		The default subject.
	"""

	def _run_request(content, subject, to):
		url = Mail._API + "?" + '&'.join([
			"t=" + quote_plus(Mail._TOKEN),
			"to=" + quote_plus(to),
			"subject=" + quote_plus(subject)
		])
		try:
			r = requests.post(url, data={"content" : content}, timeout=5)
			ok = r.status_code == 200
		except:
			ok = False

		return ok

	def send(content, subject=None, to=None):
		"""
			Sends an e-mail.

			Args:
				content (string): The content of the mail as *plain text*
				subject (string): The subject of the mail, else will use `DEFAULT_SUBJECT`
				to (string): The receiver of the mail, else will use `DEFAULT_TO`

			Returns:
				bool if successful
		"""
		if subject == None:
			subject = Mail.DEFAULT_SUBJECT
		if to == None:
			to = Mail.DEFAULT_TO

		if not Mail._run_request(content, subject, to):
			print("Error while sending Mail!")
			return False
		else:
			return True

	def send_variable(variable, **kwargs):
		"""
			Sends an e-mail.

			Args:
				variable (dict, list, ...): The content of the mail to send, will be json-encoded to string
				**kwargs: passed to `send()`
			Returns:
				bool if successful
		"""
		return Mail.send(json.dumps(variable, indent=2, cls=NumpyEncoder), **kwargs)