# -*- coding: utf-8 -*-
from __future__ import unicode_literals
from django.conf.urls import url
from tastypie.resources import Resource
from tastypie.utils import trailing_slash
from api.utils import jwt_token
import simplejson as json

'''
'''
class JWTResource(Resource):
    class Meta:
        allowed_methods = ['post']
        resource_name = 'auth'

    '''
    '''
    def prepend_urls(self):
        return [
            url(r'^%s/get_token%s$' % (self._meta.resource_name, trailing_slash), self.wrap_view('get_token'), name="api_get_token"),
            url(r'^%s/check_token%s$' % (self._meta.resource_name, trailing_slash), self.wrap_view('check_token'), name="api_check_token"),
        ]

    '''
    '''
    def get_token(self, request, **kwargs):
        self.method_check(request, allowed=self._meta.allowed_methods)

        # Check content type
        if request.content_type != 'application/json':
            return self.create_response(request, {
                'error': 'request is not json'
            })

        # Check body
        if not request.body:
            return self.create_response(request, {
                'error': 'request body is empty'
            })

        body = json.loads(request.body)

        # Check required parameters
        if 'username' not in body or 'password' not in body:
            return self.create_response(request, {
                'error': 'username or password not provided in request'
            })

        token = jwt_token.create_token(body['username'], body['password'])

        # Check user
        if not token:
            return self.create_response(request, {
                'error': 'cannot authenticate user'
            })

        bundle = self.build_bundle(obj={
            'token': token
        }, request=request)

        return self.create_response(request, bundle.obj)

    '''
    '''
    def check_token(self, request, **kwargs):
        self.method_check(request, allowed=self._meta.allowed_methods)

         # Check content type
        if request.content_type != 'application/json':
            return self.create_response(request, {
                'error': 'request is not json'
            })

        # Check body
        if not request.body:
            return self.create_response(request, {
                'error': 'request body is empty'
            })

        body = json.loads(request.body)

        # Check required parameters
        if 'token' not in body:
            return self.create_response(request, {
                'error': 'token not provided in request'
            })

        nice_token = jwt_token.check_token(body['token'])

        bundle = self.build_bundle(obj={
            'status': nice_token
        }, request=request)

        return self.create_response(request, bundle.obj)