#!/usr/bin/env python3

import logging
import os
import sys
import subprocess
import atexit
from typing import List, Tuple

from github import Github

from env_helper import TEMP_PATH, REPO_COPY, REPORTS_PATH
from s3_helper import S3Helper
from get_robot_token import get_best_robot_token
from pr_info import PRInfo
from build_download_helper import download_unit_tests
from upload_result_helper import upload_results
from docker_pull_helper import get_image_with_version
from commit_status_helper import post_commit_status, update_mergeable_check
from clickhouse_helper import (
    ClickHouseHelper,
    mark_flaky_tests,
    prepare_tests_results_for_clickhouse,
)
from stopwatch import Stopwatch
from rerun_helper import RerunHelper
from tee_popen import TeePopen


IMAGE_NAME = "clickhouse/unit-test"


def get_test_name(line):
    elements = reversed(line.split(" "))
    for element in elements:
        if "(" not in element and ")" not in element:
            return element
    raise Exception(f"No test name in line '{line}'")


def process_results(
    result_folder: str,
) -> Tuple[str, str, List[Tuple[str, str]], List[str]]:
    OK_SIGN = "OK ]"
    FAILED_SIGN = "FAILED  ]"
    SEGFAULT = "Segmentation fault"
    SIGNAL = "received signal SIG"
    PASSED = "PASSED"

    summary = []  # type: List[Tuple[str, str]]
    total_counter = 0
    failed_counter = 0
    result_log_path = f"{result_folder}/test_result.txt"
    if not os.path.exists(result_log_path):
        logging.info("No output log on path %s", result_log_path)
        return "error", "No output log", summary, []

    status = "success"
    description = ""
    passed = False
    with open(result_log_path, "r", encoding="utf-8") as test_result:
        for line in test_result:
            if OK_SIGN in line:
                logging.info("Found ok line: '%s'", line)
                test_name = get_test_name(line.strip())
                logging.info("Test name: '%s'", test_name)
                summary.append((test_name, "OK"))
                total_counter += 1
            elif FAILED_SIGN in line and "listed below" not in line and "ms)" in line:
                logging.info("Found fail line: '%s'", line)
                test_name = get_test_name(line.strip())
                logging.info("Test name: '%s'", test_name)
                summary.append((test_name, "FAIL"))
                total_counter += 1
                failed_counter += 1
            elif SEGFAULT in line:
                logging.info("Found segfault line: '%s'", line)
                status = "failure"
                description += "Segmentation fault. "
                break
            elif SIGNAL in line:
                logging.info("Received signal line: '%s'", line)
                status = "failure"
                description += "Exit on signal. "
                break
            elif PASSED in line:
                logging.info("PASSED record found: '%s'", line)
                passed = True

    if not passed:
        status = "failure"
        description += "PASSED record not found. "

    if failed_counter != 0:
        status = "failure"

    if not description:
        description += (
            f"fail: {failed_counter}, passed: {total_counter - failed_counter}"
        )

    return status, description, summary, [result_log_path]


if __name__ == "__main__":
    logging.basicConfig(level=logging.INFO)

    stopwatch = Stopwatch()

    temp_path = TEMP_PATH
    repo_path = REPO_COPY
    reports_path = REPORTS_PATH

    check_name = sys.argv[1]

    if not os.path.exists(temp_path):
        os.makedirs(temp_path)

    pr_info = PRInfo()

    gh = Github(get_best_robot_token(), per_page=100)

    atexit.register(update_mergeable_check, gh, pr_info, check_name)

    rerun_helper = RerunHelper(gh, pr_info, check_name)
    if rerun_helper.is_already_finished_by_status():
        logging.info("Check is already finished according to github status, exiting")
        sys.exit(0)

    docker_image = get_image_with_version(reports_path, IMAGE_NAME)

    download_unit_tests(check_name, reports_path, temp_path)

    tests_binary_path = os.path.join(temp_path, "unit_tests_dbms")
    os.chmod(tests_binary_path, 0o777)

    test_output = os.path.join(temp_path, "test_output")
    if not os.path.exists(test_output):
        os.makedirs(test_output)

    run_command = f"docker run --cap-add=SYS_PTRACE --volume={tests_binary_path}:/unit_tests_dbms --volume={test_output}:/test_output {docker_image}"

    run_log_path = os.path.join(test_output, "run.log")

    logging.info("Going to run func tests: %s", run_command)

    with TeePopen(run_command, run_log_path) as process:
        retcode = process.wait()
        if retcode == 0:
            logging.info("Run successfully")
        else:
            logging.info("Run failed")

    subprocess.check_call(f"sudo chown -R ubuntu:ubuntu {temp_path}", shell=True)

    s3_helper = S3Helper()
    state, description, test_results, additional_logs = process_results(test_output)

    ch_helper = ClickHouseHelper()
    mark_flaky_tests(ch_helper, check_name, test_results)

    report_url = upload_results(
        s3_helper,
        pr_info.number,
        pr_info.sha,
        test_results,
        [run_log_path] + additional_logs,
        check_name,
    )
    print(f"::notice ::Report url: {report_url}")
    post_commit_status(gh, pr_info.sha, check_name, description, state, report_url)

    prepared_events = prepare_tests_results_for_clickhouse(
        pr_info,
        test_results,
        state,
        stopwatch.duration_seconds,
        stopwatch.start_time_str,
        report_url,
        check_name,
    )

    ch_helper.insert_events_into(db="default", table="checks", events=prepared_events)

    if state == "error":
        sys.exit(1)