#!/usr/bin/python
#
# This program and the accompanying materials
# are made available under the terms of the Apache License, Version 2.0
# which accompanies this distribution, and is available at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
from urllib2 import Request, urlopen, URLError
import logging
import json
import os
import pdfkit
import yaml


# ----------------------------------------------------------
#
#               YAML UTILS
#
# -----------------------------------------------------------
def get_parameter_from_yaml(parameter, file):
    """
    Returns the value of a given parameter in file.yaml
    parameter must be given in string format with dots
    Example: general.openstack.image_name
    """
    with open(file) as f:
        file_yaml = yaml.safe_load(f)
    f.close()
    value = file_yaml
    for element in parameter.split("."):
        value = value.get(element)
        if value is None:
            raise ValueError("The parameter %s is not defined in"
                             " reporting.yaml" % parameter)
    return value


def get_config(parameter):
    yaml_ = os.environ["CONFIG_REPORTING_YAML"]
    return get_parameter_from_yaml(parameter, yaml_)


# ----------------------------------------------------------
#
#               LOGGER UTILS
#
# -----------------------------------------------------------
def getLogger(module):
    logFormatter = logging.Formatter("%(asctime)s [" +
                                     module +
                                     "] [%(levelname)-5.5s]  %(message)s")
    logger = logging.getLogger()
    log_file = get_config('general.log.log_file')
    log_level = get_config('general.log.log_level')

    fileHandler = logging.FileHandler("{0}/{1}".format('.', log_file))
    fileHandler.setFormatter(logFormatter)
    logger.addHandler(fileHandler)

    consoleHandler = logging.StreamHandler()
    consoleHandler.setFormatter(logFormatter)
    logger.addHandler(consoleHandler)
    logger.setLevel(log_level)
    return logger


# ----------------------------------------------------------
#
#               REPORTING UTILS
#
# -----------------------------------------------------------
def getApiResults(case, installer, scenario, version):
    results = json.dumps([])
    # to remove proxy (to be removed at the end for local test only)
    # proxy_handler = urllib2.ProxyHandler({})
    # opener = urllib2.build_opener(proxy_handler)
    # urllib2.install_opener(opener)
    # url = "http://127.0.0.1:8000/results?case=" + case + \
    #       "&period=30&installer=" + installer
    period = get_config('general.period')
    url_base = get_config('testapi.url')
    nb_tests = get_config('general.nb_iteration_tests_success_criteria')

    url = ("http://" + url_base + "?case=" + case +
           "&period=" + str(period) + "&installer=" + installer +
           "&scenario=" + scenario + "&version=" + version +
           "&last=" + str(nb_tests))
    request = Request(url)

    try:
        response = urlopen(request)
        k = response.read()
        results = json.loads(k)
    except URLError as e:
        print('No kittez. Got an error code:', e)

    return results


def getScenarios(case, installer, version):

    try:
        case = case.getName()
    except:
        # if case is not an object test case, try the string
        if type(case) == str:
            case = case
        else:
            raise ValueError("Case cannot be evaluated")

    period = get_config('general.period')
    url_base = get_config('testapi.url')

    url = ("http://" + url_base + "?case=" + case +
           "&period=" + str(period) + "&installer=" + installer +
           "&version=" + version)
    request = Request(url)

    try:
        response = urlopen(request)
        k = response.read()
        results = json.loads(k)
        test_results = results['results']
    except URLError as e:
        print('Got an error code:', e)

    if test_results is not None:
        test_results.reverse()

        scenario_results = {}

        for r in test_results:
            # Retrieve all the scenarios per installer
            if not r['scenario'] in scenario_results.keys():
                scenario_results[r['scenario']] = []
            # Do we consider results from virtual pods ...
            # Do we consider results for non HA scenarios...
            exclude_virtual_pod = get_config('functest.exclude_virtual')
            exclude_noha = get_config('functest.exclude_noha')
            if ((exclude_virtual_pod and "virtual" in r['pod_name']) or
                    (exclude_noha and "noha" in r['scenario'])):
                print("exclude virtual pod results...")
            else:
                scenario_results[r['scenario']].append(r)

    return scenario_results


def getScenarioStats(scenario_results):
    scenario_stats = {}
    for k, v in scenario_results.iteritems():
        scenario_stats[k] = len(v)

    return scenario_stats


# TODO convergence with above function getScenarios
def getScenarioStatus(installer, version):
    period = get_config('general.period')
    url_base = get_config('testapi.url')

    url = ("http://" + url_base + "?case=scenario_status" +
           "&installer=" + installer +
           "&version=" + version + "&period=" + str(period))
    request = Request(url)

    try:
        response = urlopen(request)
        k = response.read()
        response.close()
        results = json.loads(k)
        test_results = results['results']
    except URLError as e:
        print('Got an error code:', e)

    scenario_results = {}
    result_dict = {}
    if test_results is not None:
        for r in test_results:
            if r['stop_date'] != 'None' and r['criteria'] is not None:
                if not r['scenario'] in scenario_results.keys():
                    scenario_results[r['scenario']] = []
                scenario_results[r['scenario']].append(r)

        for k, v in scenario_results.items():
            # scenario_results[k] = v[:LASTEST_TESTS]
            s_list = []
            for element in v:
                if element['criteria'] == 'SUCCESS':
                    s_list.append(1)
                else:
                    s_list.append(0)
            result_dict[k] = s_list

    # return scenario_results
    return result_dict


def getNbtestOk(results):
    nb_test_ok = 0
    for r in results:
        for k, v in r.iteritems():
            try:
                if "PASS" in v:
                    nb_test_ok += 1
            except:
                print("Cannot retrieve test status")
    return nb_test_ok


def getResult(testCase, installer, scenario, version):

    # retrieve raw results
    results = getApiResults(testCase, installer, scenario, version)
    # let's concentrate on test results only
    test_results = results['results']

    # if results found, analyze them
    if test_results is not None:
        test_results.reverse()

        scenario_results = []

        # print " ---------------- "
        # print test_results
        # print " ---------------- "
        # print "nb of results:" + str(len(test_results))

        for r in test_results:
            # print r["start_date"]
            # print r["criteria"]
            scenario_results.append({r["start_date"]: r["criteria"]})
        # sort results
        scenario_results.sort()
        # 4 levels for the results
        # 3: 4+ consecutive runs passing the success criteria
        # 2: <4 successful consecutive runs but passing the criteria
        # 1: close to pass the success criteria
        # 0: 0% success, not passing
        # -1: no run available
        test_result_indicator = 0
        nbTestOk = getNbtestOk(scenario_results)

        # print "Nb test OK (last 10 days):"+ str(nbTestOk)
        # check that we have at least 4 runs
        if len(scenario_results) < 1:
            # No results available
            test_result_indicator = -1
        elif nbTestOk < 1:
            test_result_indicator = 0
        elif nbTestOk < 2:
            test_result_indicator = 1
        else:
            # Test the last 4 run
            if (len(scenario_results) > 3):
                last4runResults = scenario_results[-4:]
                nbTestOkLast4 = getNbtestOk(last4runResults)
                # print "Nb test OK (last 4 run):"+ str(nbTestOkLast4)
                if nbTestOkLast4 > 3:
                    test_result_indicator = 3
                else:
                    test_result_indicator = 2
            else:
                test_result_indicator = 2
    return test_result_indicator


def getJenkinsUrl(build_tag):
    # e.g. jenkins-functest-apex-apex-daily-colorado-daily-colorado-246
    # id = 246
    # jenkins-functest-compass-huawei-pod5-daily-master-136
    # id = 136
    # note it is linked to jenkins format
    # if this format changes...function to be adapted....
    url_base = get_config('functest.jenkins_url')
    try:
        build_id = [int(s) for s in build_tag.split("-") if s.isdigit()]
        url_id = (build_tag[8:-(len(str(build_id[0])) + 1)] +
                  "/" + str(build_id[0]))
        jenkins_url = url_base + url_id + "/console"
    except:
        print('Impossible to get jenkins url:')

    if "jenkins-" not in build_tag:
        jenkins_url = None

    return jenkins_url


def getScenarioPercent(scenario_score, scenario_criteria):
    score = 0.0
    try:
        score = float(scenario_score) / float(scenario_criteria) * 100
    except:
        print('Impossible to calculate the percentage score')
    return score


# *********
# Yardstick
# *********
def subfind(given_list, pattern_list):
    LASTEST_TESTS = get_config('general.nb_iteration_tests_success_criteria')
    for i in range(len(given_list)):
        if given_list[i] == pattern_list[0] and \
                given_list[i:i + LASTEST_TESTS] == pattern_list:
            return True
    return False


def _get_percent(status):

    if status * 100 % 6:
        return round(float(status) * 100 / 6, 1)
    else:
        return status * 100 / 6


def get_percent(four_list, ten_list):
    four_score = 0
    ten_score = 0

    for v in four_list:
        four_score += v
    for v in ten_list:
        ten_score += v

    LASTEST_TESTS = get_config('general.nb_iteration_tests_success_criteria')
    if four_score == LASTEST_TESTS:
        status = 6
    elif subfind(ten_list, [1, 1, 1, 1]):
        status = 5
    elif ten_score == 0:
        status = 0
    else:
        status = four_score + 1

    return _get_percent(status)


def _test():
    status = getScenarioStatus("compass", "master")
    print("status:++++++++++++++++++++++++")
    print(json.dumps(status, indent=4))


# ----------------------------------------------------------
#
#               Export
#
# -----------------------------------------------------------

def export_csv(scenario_file_name, installer, version):
    # csv
    # generate sub files based on scenario_history.txt
    scenario_installer_file_name = ("./display/" + version +
                                    "/functest/scenario_history_" +
                                    installer + ".csv")
    scenario_installer_file = open(scenario_installer_file_name, "a")
    with open(scenario_file_name, "r") as f:
        scenario_installer_file.write("date,scenario,installer,detail,score\n")
        for line in f:
            if installer in line:
                scenario_installer_file.write(line)
        scenario_installer_file.close


def export_pdf(pdf_path, pdf_doc_name):
    try:
        pdfkit.from_file(pdf_path, pdf_doc_name)
    except IOError:
        print("Error but pdf generated anyway...")
    except:
        print("impossible to generate PDF")