# -*- encoding: utf-8 -*-

from __future__ import unicode_literals

import os
import json

import unittest

from werkzeug.test import Client, EnvironBuilder
from werkzeug.wrappers import Response, Request
from werkzeug.exceptions import Forbidden

from isso import Isso, config, dist
from isso.utils import http
from isso.views.api import xhr


class FakeIP(object):

    def __init__(self, app, ip):
        self.app = app
        self.ip = ip

    def __call__(self, environ, start_response):
        environ['REMOTE_ADDR'] = self.ip
        return self.app(environ, start_response)


class JSONClient(Client):

    def open(self, *args, **kwargs):
        kwargs.setdefault('content_type', 'application/json')
        return super(JSONClient, self).open(*args, **kwargs)


class Dummy(object):

    status = 200

    def __enter__(self):
        return self

    def read(self):
        return ''

    def __exit__(self, exc_type, exc_val, exc_tb):
        pass


curl = lambda method, host, path: Dummy()
loads = lambda data: json.loads(data.decode('utf-8'))

http.curl = curl


class TestComments(unittest.TestCase):

    def setUp(self):
        conf = config.load(os.path.join(dist.location, "isso", "defaults.ini"))
        conf.set("general", "dbpath", "sqlite:///:memory:")
        conf.set("general", "max-age", "900")
        conf.set("guard", "enabled", "off")
        conf.set("hash", "algorithm", "none")

        self.app = Isso(conf)
        self.app.wsgi_app = FakeIP(self.app.wsgi_app, "192.168.1.1")

        self.client = JSONClient(self.app, Response)
        self.get = self.client.get
        self.put = self.client.put
        self.post = self.client.post
        self.delete = self.client.delete

    # done (except Markup)
    def testGet(self):

        self.post('/new?uri=%2Fpath%2F', data=json.dumps({'text': 'Lorem ipsum ...'}))
        r = self.get('/id/1')
        self.assertEqual(r.status_code, 200)

        rv = loads(r.data)

        self.assertEqual(rv['id'], 1)
        self.assertEqual(rv['text'], '<p>Lorem ipsum ...</p>')

    # done (except Set-Cookie)
    def testCreate(self):

        rv = self.post('/new?uri=%2Fpath%2F', data=json.dumps({'text': 'Lorem ipsum ...'}))

        self.assertEqual(rv.status_code, 201)
        self.assertIn("Set-Cookie", rv.headers)
        self.assertIn("X-Set-Cookie", rv.headers)

        rv = loads(rv.data)

        self.assertEqual(rv["mode"], 1)
        self.assertEqual(rv["text"], '<p>Lorem ipsum ...</p>')

    def testGetLimited(self):

        for i in range(20):
            self.post('/new?uri=test', data=json.dumps({'text': '...'}))

        r = self.get('/?uri=test&limit=10')
        self.assertEqual(r.status_code, 200)

        rv = loads(r.data)
        self.assertEqual(len(rv['replies']), 10)

    def testGetNested(self):

        self.post('/new?uri=test', data=json.dumps({'text': '...'}))
        self.post('/new?uri=test', data=json.dumps({'text': '...', 'parent': 1}))

        r = self.get('/?uri=test&parent=1')
        self.assertEqual(r.status_code, 200)

        rv = loads(r.data)
        self.assertEqual(len(rv['replies']), 1)

    def testGetLimitedNested(self):

        self.post('/new?uri=test', data=json.dumps({'text': '...'}))
        for i in range(20):
            self.post('/new?uri=test', data=json.dumps({'text': '...', 'parent': 1}))

        r = self.get('/?uri=test&parent=1&limit=10')
        self.assertEqual(r.status_code, 200)

        rv = loads(r.data)
        self.assertEqual(len(rv['replies']), 10)

    # done (except plain)
    def testUpdate(self):

        self.post('/new?uri=%2Fpath%2F', data=json.dumps({'text': 'Lorem ipsum ...'}))
        self.put('/id/1', data=json.dumps({
            'text': 'Hello World', 'author': 'me', 'website': 'http://example.com/'}))

        r = self.get('/id/1?plain=1')
        self.assertEqual(r.status_code, 200)

        rv = loads(r.data)
        self.assertEqual(rv['text'], 'Hello World')
        self.assertEqual(rv['author'], 'me')
        self.assertEqual(rv['website'], 'http://example.com/')
        self.assertIn('modified', rv)

    def testDeleteAndCreateByDifferentUsersButSamePostId(self):

        mallory = JSONClient(self.app, Response)
        mallory.post('/new?uri=%2Fpath%2F', data=json.dumps({'text': 'Foo'}))
        mallory.delete('/id/1')

        bob = JSONClient(self.app, Response)
        bob.post('/new?uri=%2Fpath%2F', data=json.dumps({'text': 'Bar'}))

        self.assertEqual(mallory.delete('/id/1').status_code, 403)
        self.assertEqual(bob.delete('/id/1').status_code, 200)

    def testCSRF(self):

        csrf = xhr(lambda *x, **z: True)

        def build(**kw):
            environ = EnvironBuilder(**kw).get_environ()
            return environ, Request(environ)

        # no header is fine (default for XHR)
        env, req = build()
        self.assertTrue(csrf(None, env, req))

        # for the record
        env, req = build(content_type="application/json")
        self.assertTrue(csrf(None, env, req))

        # # x-www-form-urlencoded is definitely not RESTful
        env, req = build(content_type="application/x-www-form-urlencoded")
        self.assertRaises(Forbidden, csrf, None, env, req)

    def testCookieExpiration(self):

        rv = self.post('/new?uri=%2Fpath%2F', data=json.dumps({"text": "Hello, World!"}))
        headers = rv.headers

        for key in ("Set-Cookie", "X-Set-Cookie"):
            self.assertTrue(headers.has_key(key))
            self.assertIn("max-age=900", headers.get(key).lower())