"""
TestRail API binding for Python 3.x.

"""

####################################################################
# Custom version of testrail_api module
#
# Used by Nightly_Sanity ###########################################
####################################################################

import base64
import json

import requests
from pprint import pprint
import os


# tr_user=os.getenv('TR_USER')
# tr_pw=os.getenv('TR_PWD')
# project = os.getenv('PROJECT_ID')


class APIClient:
    def __init__(self, base_url, tr_user, tr_pw, project):
        self.user = tr_user
        self.password = tr_pw
        self.project = project
        if not base_url.endswith('/'):
            base_url += '/'
        self.__url = base_url + 'index.php?/api/v2/'

    def send_get(self, uri, filepath=None):
        """Issue a GET request (read) against the API.

        Args:
            uri: The API method to call including parameters, e.g. get_case/1.
            filepath: The path and file name for attachment download; used only
                for 'get_attachment/:attachment_id'.

        Returns:
            A dict containing the result of the request.
        """
        return self.__send_request('GET', uri, filepath)

    def send_post(self, uri, data):
        """Issue a POST request (write) against the API.

        Args:
            uri: The API method to call, including parameters, e.g. add_case/1.
            data: The data to submit as part of the request as a dict; strings
                must be UTF-8 encoded. If adding an attachment, must be the
                path to the file.

        Returns:
            A dict containing the result of the request.
        """
        return self.__send_request('POST', uri, data)

    def __send_request(self, method, uri, data):
        url = self.__url + uri

        auth = str(
            base64.b64encode(
                bytes('%s:%s' % (self.user, self.password), 'utf-8')
            ),
            'ascii'
        ).strip()
        headers = {'Authorization': 'Basic ' + auth}
        # print("Method =" , method)

        if method == 'POST':
            if uri[:14] == 'add_attachment':  # add_attachment API method
                files = {'attachment': (open(data, 'rb'))}
                response = requests.post(url, headers=headers, files=files)
                files['attachment'].close()
            else:
                headers['Content-Type'] = 'application/json'
                payload = bytes(json.dumps(data), 'utf-8')
                response = requests.post(url, headers=headers, data=payload)
        else:
            headers['Content-Type'] = 'application/json'
            response = requests.get(url, headers=headers)
            # print("headers = ", headers)
            # print("resonse=", response)
            # print("response code =", response.status_code)

        if response.status_code > 201:

            try:
                error = response.json()
            except:  # response.content not formatted as JSON
                error = str(response.content)
            # raise APIError('TestRail API returned HTTP %s (%s)' % (response.status_code, error))
            print('TestRail API returned HTTP %s (%s)' % (response.status_code, error))
            return
        else:
            print(uri[:15])
            if uri[:15] == 'get_attachments':  # Expecting file, not JSON
                try:
                    print('opening file')
                    print(str(response.content))
                    open(data, 'wb').write(response.content)
                    print('opened file')
                    return (data)
                except:
                    return ("Error saving attachment.")
            else:

                try:
                    return response.json()
                except:  # Nothing to return
                    return {}

    def get_project_id(self, project_name):
        "Get the project ID using project name"
        project_id = None
        projects = self.send_get('get_projects')
        ##pprint(projects)
        for project in projects:
            if project['name'] == project_name:
                project_id = project['id']
                # project_found_flag=True
                break
            print("project Id =", project_id)
        return project_id

    def get_run_id(self, test_run_name):
        "Get the run ID using test name and project name"
        run_id = None
        project_id = self.get_project_id(project_name=self.project)

        try:
            test_runs = self.send_get('get_runs/%s' % (project_id))
            # print("------------TEST RUNS----------")
            # pprint(test_runs)

        except Exception:
            print
            'Exception in update_testrail() updating TestRail.'
            return None
        else:
            for test_run in test_runs:
                if test_run['name'] == test_run_name:
                    run_id = test_run['id']
                    # print("run Id in Test Runs=",run_id)
                    break
            return run_id

    def update_testrail(self, case_id, run_id, status_id, msg):
        "Update TestRail for a given run_id and case_id"
        update_flag = False
        # Get the TestRail client account details
        # Update the result in TestRail using send_post function.
        # Parameters for add_result_for_case is the combination of runid and case id.
        # status_id is 1 for Passed, 2 For Blocked, 4 for Retest and 5 for Failed
        # status_id = 1 if result_flag is True else 5

        print("result status Pass/Fail = ", status_id)
        print("case id=", case_id)
        print("run id passed to update is ", run_id, case_id)
        if run_id is not None:
            try:
                result = self.send_post(
                    'add_result_for_case/%s/%s' % (run_id, case_id),
                    {'status_id': status_id, 'comment': msg})
                print("result in post", result)
            except Exception:
                print
                'Exception in update_testrail() updating TestRail.'

            else:
                print
                'Updated test result for case: %s in test run: %s with msg:%s' % (case_id, run_id, msg)

        return update_flag

    def create_testrun(self, name, case_ids, project_id, milestone_id, description):
        result = self.send_post(
            'add_run/%s' % (project_id),
            {'name': name, 'case_ids': case_ids, 'milestone_id': milestone_id, 'description': description,
             'include_all': False})
        print("result in post", result)

    def update_testrun(self, runid, description):
        result = self.send_post(
            'update_run/%s' % (runid),
            {'description': description})
        print("result in post", result)


class APIError(Exception):
    pass