#  
# ============LICENSE_START========================================== 
# org.onap.vvp/engagementmgr
# ===================================================================
# Copyright © 2017 AT&T Intellectual Property. All rights reserved.
# ===================================================================
#
# Unless otherwise specified, all software contained herein is licensed
# under the Apache License, Version 2.0 (the “License”);
# you may not use this software except in compliance with the License.
# You may obtain a copy of the License at
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#             http://www.apache.org/licenses/LICENSE-2.0
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
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#
#
# Unless otherwise specified, all documentation contained herein is licensed
# under the Creative Commons License, Attribution 4.0 Intl. (the “License”);
# you may not use this documentation except in compliance with the License.
# You may obtain a copy of the License at
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#             https://creativecommons.org/licenses/by/4.0/
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# Unless required by applicable law or agreed to in writing, documentation
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# ============LICENSE_END============================================
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# ECOMP is a trademark and service mark of AT&T Intellectual Property.
from abc import ABCMeta, abstractmethod
import http.client
import inspect
import re
import django
from django.conf import settings
from django.test import TestCase
from django.test.client import Client
import psycopg2
from rest_framework.parsers import JSONParser
from wheel.signatures import assertTrue
django.setup()
from engagementmanager.tests.vvpEntitiesCreator import VvpEntitiesCreator
from engagementmanager.service.logging_service import LoggingServiceFactory

logger = LoggingServiceFactory.get_logger()


class TestBaseEntity(TestCase):
    __metaclass__ = ABCMeta

    def setUp(self):
        logger.debug("---------------------- TestCase " + self.__class__.__name__ + " ----------------------")
        self.urlPrefix = "/ice/v1/engmgr/"
        self.conn = http.client.HTTPConnection("127.0.0.1", 8000)  # @UndefinedVariable
        self.c = Client()
        self.creator = VvpEntitiesCreator()
        settings.IS_SIGNAL_ENABLED = False
        self.childSetup()

    def tearDown(self):
        settings.IS_SIGNAL_ENABLED = True
        self.conn.close()
        logger.debug("----------------------  TestCase " + self.__class__.__name__ + " ---------------------- ")
        logger.debug("")
        logger.debug("")

    def createVendors(self, vendorList):
        for vendor in vendorList:
            vendorUuid, vendor = self.creator.createVendor(vendor)
            logger.debug(vendorUuid)

    def createDefaultRoles(self):
        # Create Default Roles if does not exist
        self.admin, self.el, self.standard_user = self.creator.createAndGetDefaultRoles()

    def printTestName(self, testNameTrigger):
        if testNameTrigger == "START":
            logger.debug("[TestName: " + inspect.stack()[1][3] + " - START]")
        elif testNameTrigger == "END":
            logger.debug("[TestName: " + inspect.stack()[1][3] + " - END]")

    @abstractmethod
    def childSetup(self):
        pass

    def nativeConnect2Db(self):
        return psycopg2.connect("dbname='icedb' user='iceuser' host='localhost' password='Aa123456' port='5433'")

    def deleteRecord(self, urlStr, getRecord, isNegativeTest):
        logger.debug("DELETE: " + urlStr + "/" + getRecord)
        self.conn.request("DELETE", urlStr + "/" + getRecord)
        r1 = self.conn.getresponse()
        logger.debug("DELETE response status code: " + str(r1.status))
#         logger.debug("Number of records in the table: " + self.getNumOfRecordViaRest(urlStr))
        if (isNegativeTest == False):
            assertTrue(r1.status == 204)
            return r1
        elif (isNegativeTest == True):
            return r1

    def createEntityViaPost(self, urlStr, params, headers=None):
        logger.debug("POST: " + urlStr + " Body: " + params + " Headers: " + str(headers))
        self.conn.request("POST", urlStr, params, headers)
        r1 = self.conn.getresponse()
        return r1

    def editEntityViaPut(self, urlStr, getRecord, params, isNegativeTest):
        logger.debug("PUT: " + urlStr + "/" + getRecord + " " + params)
        self.conn.request("PUT", urlStr + "/" + getRecord, params)
        r1 = self.conn.getresponse()
        logger.debug("PUT response status code: " + str(r1.status))
        if (isNegativeTest == False):
            assertTrue(r1.status == 200)
            return r1
        elif (isNegativeTest == True):
            return r1

    '''
    If you wish to "SELECT *" and get the first record then send queryFilterName=1 and queryFilterValue=1 to the method
    '''

    def filterTableByColAndVal(self, queryColumnName, queryTableName, queryFilterName, queryFilterValue):
        dbConn = self.nativeConnect2Db()
        cur = dbConn.cursor()
        queryStr = "SELECT %s FROM %s WHERE %s ='%s'" % (
            queryColumnName, queryTableName, queryFilterName, queryFilterValue)
        logger.debug(queryStr)
        cur.execute(queryStr)
        result = str(cur.fetchone())
        if (bool(re.search('[^0-9]', result)) == True):
            logger.debug("Looks like result (" + result +
                         ") from DB is in a multi column pattern: [col1, col2,...,coln], omitting it all colm beside " + queryColumnName)
            if (result.find("',)") != -1):  # formatting strings e.g uuid
                result = result.partition('\'')[-1].rpartition('\'')[0]
            elif (result.find(",)") != -1):  # formatting ints e.g id
                result = result.partition('(')[-1].rpartition(',')[0]
        logger.debug("Filter result: " + result)
        return result

    def selectLastValue(self, queryColumnName, queryTableName, orderBy="id"):
        dbConn = self.nativeConnect2Db()
        cur = dbConn.cursor()
        queryStr = "select %s from %s ORDER BY %s DESC LIMIT 1;" % (queryColumnName, queryTableName, orderBy)
        logger.debug(queryStr)
        cur.execute(queryStr)
        result = str(cur.fetchone())
        if (bool(re.search('[^0-9]', result)) == True):
            logger.debug("Looks like result (" + result +
                         ") from DB is in a multi column pattern: [col1, col2,...,coln], omitting it all colm beside " + queryColumnName)
            if (result.find("',)") != -1):  # formatting strings e.g uuid
                result = result.partition('\'')[-1].rpartition('\'')[0]
            elif (result.find(",)") != -1):  # formatting ints e.g id
                result = result.partition('(')[-1].rpartition(',')[0]
        logger.debug("Filter result: " + result)
        return result

    def columnMaxLength(self, tableName, columnName):
        dbConn = self.nativeConnect2Db()
        cur = dbConn.cursor()
        queryStr = "SELECT character_maximum_length from information_schema.columns WHERE table_name ='%s' and column_name = '%s'" % (
            tableName, columnName)
        cur.execute(queryStr)
        result = str(cur.fetchone())
        if (bool(re.search('[^0-9]', result)) == True):
            if (result.find("',)") != -1):  # formatting strings e.g uuid
                result = result.partition('\'')[-1].rpartition('\'')[0]
            elif (result.find(",)") != -1):  # formatting ints e.g id
                result = result.partition('(')[-1].rpartition(',')[0]
        return int(result)

    def getNumOfRecordViaRest(self, urlStr):
        logger.debug("GET: " + urlStr)
        self.conn.request("GET", urlStr)
        data_list = JSONParser().parse(self.conn.getresponse())
        cnt = str(len(data_list))
        return cnt

    def getMaximalNameValue(self, urlStr):
        logger.debug("GET: " + urlStr)
        self.conn.request("GET", urlStr)
        data_list = JSONParser().parse(self.conn.getresponse())
        maxName = 0
        for asi in data_list:
            logger.debug(asi)
            for key, value in asi.items():
                if (key == "name"):
                    if (maxName < int(value)):
                        maxName = int(value)
        logger.debug("MaximalNameValue=" + str(maxName))
        return maxName

    def getRecordAndDeserilizeIt(self, urlStr, getFilter, serializer, isCreateObj):
        logger.debug("GET: " + urlStr + "/" + getFilter)
        try:
            self.conn.request("GET", urlStr + "/" + getFilter)
            data = JSONParser().parse(self.conn.getresponse())
            logger.debug("DATA After JSON Parse:" + str(data))
            ser = serializer(data=data)
#             logger.debug(" --> Serializer data: "+repr(ser))
            if (isCreateObj == True):
                logger.debug("Creating ...")
                obj = ser.create(data)
            else:
                logger.debug("Updating ...")
                obj = ser.create(data)
                ser.update(obj, data)
        except Exception:
            logger.debug(Exception)
            raise Exception
        return obj

    def newParameters(self, oldValue, newValue, uuidValue):
        newParams = re.sub(oldValue, newValue, self.params)  # Find and replace in string.
        newParams = re.sub("}", ', "uuid":"' + uuidValue + '"}', newParams)  # Add UUID to params
        return newParams

    def negativeTestPost(self, getFilter, allowTwice=False):
        logger.debug("POST negative tests are starting now!")
        if (allowTwice == False):
            logger.debug("Negative 01: Insert the same record twice via REST")
            r1 = self.createEntityViaPost(self.urlStr, self.params)
            logger.debug(r1.status, r1.reason)
            assertTrue(r1.status == 400)
            self.deleteRecord(self.urlStr, getFilter, False)
        logger.debug("Negative 02: Insert record with empty value via REST")
        paramsEmptyValue = re.sub(r':\".*?\"', ':\"\"', self.params)  # Create params with empty values.
        r1 = self.createEntityViaPost(self.urlStr, paramsEmptyValue)
        logger.debug(r1.status, r1.reason)
        assertTrue(r1.status == 400)
        logger.debug("Negative 03: Insert record with missing value via REST")
        paramsMissingValue = re.sub(r'{\".*?\":', '{\"\":', self.params)  # Create params without records part 1.
        # Create params without records part 2.
        paramsMissingValue = re.sub(r', \".*?\":', ', \"\":', paramsMissingValue)
        r1 = self.createEntityViaPost(self.urlStr, paramsMissingValue)
        logger.debug(r1.status, r1.reason)
        assertTrue(r1.status == 400)
        logger.debug("Negative 04: Insert record with more than " + str(self.longValueLength) + " chars via REST")
        paramsLongValue = re.sub(
            r':\".*?\"', ':\"' + str(self.randomGenerator("randomNumber", self.longValueLength)) + '\"', self.params)
        r1 = self.createEntityViaPost(self.urlStr, paramsLongValue)
        logger.debug(r1.status, r1.reason)
        assertTrue(r1.status == 400)
        if (allowTwice == True):
            logger.debug("Deleting record from database...")
            self.deleteRecord(self.urlStr, getFilter, False)

    def negativeTestPut(self, getFilter, params):
        logger.debug("PUT negative tests are starting now!")
        match = re.search("\D", getFilter)  # Check if getFilter contains non-digit characters.
        if not match:
            logger.debug("Negative 01: Edit non existing record via REST")
            nonExistingValue = self.randomGenerator("randomNumber", 5)
            r1 = self.editEntityViaPut(self.urlStr, nonExistingValue, params, True)
            logger.debug(r1.status, r1.reason)
            assertTrue(r1.status == 404)
            logger.debug("Negative 02: Edit record with string in URL instead of integer via REST")
            randStr = self.randomGenerator("randomString")
            r1 = self.editEntityViaPut(self.urlStr, randStr, params, True)
            logger.debug(r1.status, r1.reason)
            assertTrue(r1.status == 400)
        else:
            logger.debug("Negative 01: Edit non existing record via REST")
            nonExistingValue = self.randomGenerator("randomString")
            r1 = self.editEntityViaPut(self.urlStr, nonExistingValue, params, True)
            logger.debug(r1.status, r1.reason)
            assertTrue(r1.status == 404)
        logger.debug("Negative 02: Edit record without URL pointer via REST")
        r1 = self.editEntityViaPut(self.urlStr, "", params, True)
        logger.debug(r1.status, r1.reason)
        assertTrue(r1.status == 405)
        logger.debug("Negative 03: Edit record with empty value via REST")
        paramsEmptyValue = re.sub(r':\".*?\"', ':\"\"', params)  # Create params with empty values.
        r1 = self.editEntityViaPut(self.urlStr, getFilter, paramsEmptyValue, True)
        logger.debug(r1.status, r1.reason)
        assertTrue(r1.status == 400)
        logger.debug("Negative 04: Edit record with missing value via REST")
        paramsMissingValue = re.sub(r'{\".*?\":', '{\"\":', params)  # Create params without records part 1.
        # Create params without records part 2.
        paramsMissingValue = re.sub(r', \".*?\":', ', \"\":', paramsMissingValue)
        r1 = self.editEntityViaPut(self.urlStr, getFilter, paramsMissingValue, True)
        logger.debug(r1.status, r1.reason)
        assertTrue(r1.status == 400)
        logger.debug("Deleting record from database...")
        self.deleteRecord(self.urlStr, getFilter, False)

    def negativeTestDelete(self):
        logger.debug("DELETE negative tests are starting now!")
        logger.debug("Negative 01: Delete non existing record via REST or wrong URL pointer")
        nonExistingValue = self.randomGenerator("randomString")
        r1 = self.deleteRecord(self.urlStr, nonExistingValue, True)
        logger.debug(r1.status, r1.reason)
        assertTrue(r1.status == 404 or r1.status == 500 or r1.status == 400)
        logger.debug("Negative 02: Delete record without URL pointer via REST")
        r1 = self.deleteRecord(self.urlStr, "", True)
        logger.debug(r1.status, r1.reason)
        assertTrue(r1.status == 405)

    def failTest(self, failureReason):
        logger.debug(">>> Test failed!\n", failureReason)
        self.assertTrue(False)

    def failRestTest(self, r1):
        logger.debug("Previous HTTP POST request has failed with " + str(r1.status))
        self.assertTrue(False)

    def randomGenerator(self, typeOfValue, numberOfDigits=0):
        return self.creator.randomGenerator(typeOfValue, numberOfDigits)

    def loginAndCreateSessionToken(self, user):
        return self.creator.loginAndCreateSessionToken(user)