#!/usr/bin/env python3
import time
import logging
import json

import requests
from get_robot_token import get_parameter_from_ssm

class ClickHouseHelper:
    def __init__(self, url=None, user=None, password=None):
        if url is None:
            url = get_parameter_from_ssm("clickhouse-test-stat-url")

        self.url = url
        self.auth = {
            'X-ClickHouse-User': user if user is not None else get_parameter_from_ssm("clickhouse-test-stat-login"),
            'X-ClickHouse-Key': password if password is not None else get_parameter_from_ssm("clickhouse-test-stat-password")
        }

    def _insert_json_str_info(self, db, table, json_str):
        params = {
            'database': db,
            'query': 'INSERT INTO {table} FORMAT JSONEachRow'.format(table=table),
            'date_time_input_format': 'best_effort',
            'send_logs_level': 'warning',
        }

        for i in range(5):
            response = requests.post(self.url, params=params, data=json_str, headers=self.auth, verify=False)

            logging.info("Response content '%s'", response.content)

            if response.ok:
                break

            error = (
                "Cannot insert data into clickhouse at try " + str(i)
                + ": HTTP code " + str(response.status_code) + ": '"
                + str(response.text) + "'")

            if response.status_code >= 500:
                # A retriable error
                time.sleep(1)
                continue

            logging.info("Request headers '%s', body '%s'", response.request.headers, response.request.body)

            raise Exception(error)
        else:
            raise Exception(error)

    def insert_event_into(self, db, table, event):
        event_str = json.dumps(event)
        self._insert_json_str_info(db, table, event_str)

    def insert_events_into(self, db, table, events):
        jsons = []
        for event in events:
            jsons.append(json.dumps(event))

        self._insert_json_str_info(db, table, ','.join(jsons))

    def _select_and_get_json_each_row(self, db, query):
        params = {
            'database': db,
            'query': query,
            'default_format': 'JSONEachRow',
        }
        for i in range(5):
            response = None
            try:
                response = requests.get(self.url, params=params, headers=self.auth, verify=False)
                response.raise_for_status()
                return response.text
            except Exception as ex:
                logging.warning("Cannot insert with exception %s", str(ex))
                if response:
                    logging.warning("Reponse text %s", response.text)
                time.sleep(0.1 * i)

        raise Exception("Cannot insert data into clickhouse")

    def select_json_each_row(self, db, query):
        text = self._select_and_get_json_each_row(db, query)
        result = []
        for line in text.split('\n'):
            if line:
                result.append(json.loads(line))
        return result

def prepare_tests_results_for_clickhouse(
        pr_info, test_results,
        check_status, check_duration, check_start_time,
        report_url, check_name):

    pull_request_url = "https://github.com/ClickHouse/ClickHouse/commits/master"
    base_ref = "master"
    head_ref = "master"
    base_repo = pr_info.repo_full_name
    head_repo = pr_info.repo_full_name
    if pr_info.number != 0:
        pull_request_url = pr_info.pr_html_url
        base_ref = pr_info.base_ref
        base_repo = pr_info.base_name
        head_ref = pr_info.head_ref
        head_repo = pr_info.head_name

    common_properties = dict(
        pull_request_number=pr_info.number,
        commit_sha=pr_info.sha,
        commit_url=pr_info.commit_html_url,
        check_name=check_name,
        check_status=check_status,
        check_duration_ms=int(float(check_duration) * 1000),
        check_start_time=check_start_time,
        report_url=report_url,
        pull_request_url=pull_request_url,
        base_ref=base_ref,
        base_repo=base_repo,
        head_ref=head_ref,
        head_repo=head_repo,
        task_url=pr_info.task_url,
    )

    # Always publish a total record for all checks. For checks with individual
    # tests, also publish a record per test.
    result = [common_properties]
    for test_result in test_results:
        current_row = common_properties.copy()
        test_name = test_result[0]
        test_status = test_result[1]

        test_time = 0
        if len(test_result) > 2 and test_result[2]:
            test_time = test_result[2]
        current_row['test_duration_ms'] = int(float(test_time) * 1000)
        current_row['test_name'] = test_name
        current_row['test_status'] = test_status
        result.append(current_row)

    return result

def mark_flaky_tests(clickhouse_helper, check_name, test_results):
    try:
        query = """
        SELECT DISTINCT test_name
        FROM checks
        WHERE
            check_start_time BETWEEN now() - INTERVAL 3 DAY AND now()
            AND check_name = '{check_name}'
            AND (test_status = 'FAIL' OR test_status = 'FLAKY')
            AND pull_request_number = 0
        """.format(check_name=check_name)

        tests_data = clickhouse_helper.select_json_each_row('gh-data', query)
        master_failed_tests = {row['test_name'] for row in tests_data}
        logging.info("Found flaky tests: %s", ', '.join(master_failed_tests))

        for test_result in test_results:
            if test_result[1] == 'FAIL' and test_result[0] in master_failed_tests:
                test_result[1] = 'FLAKY'
    except Exception as ex:
        logging.info("Exception happened during flaky tests fetch %s", ex)