#!/usr/bin/env python3

import argparse
import csv
import logging
import os
import subprocess
import sys
import atexit
from pathlib import Path
from typing import List, Tuple

from github import Github

from build_download_helper import download_all_deb_packages
from clickhouse_helper import (
    CiLogsCredentials,
    ClickHouseHelper,
    prepare_tests_results_for_clickhouse,
)
from commit_status_helper import (
    RerunHelper,
    get_commit,
    override_status,
    post_commit_status,
    update_mergeable_check,
)
from docker_images_helper import get_docker_image, pull_image, DockerImage
from env_helper import TEMP_PATH, REPORT_PATH
from get_robot_token import get_best_robot_token
from pr_info import FORCE_TESTS_LABEL, PRInfo
from s3_helper import S3Helper
from stopwatch import Stopwatch
from tee_popen import TeePopen
from upload_result_helper import upload_results
from report import TestResults


def get_image_name() -> str:
    return "clickhouse/clickbench"


def get_run_command(
    builds_path: Path,
    result_path: Path,
    server_log_path: Path,
    additional_envs: List[str],
    ci_logs_args: str,
    image: DockerImage,
) -> str:
    envs = [f"-e {e}" for e in additional_envs]

    env_str = " ".join(envs)

    return (
        f"docker run --shm-size=16g --volume={builds_path}:/package_folder "
        f"{ci_logs_args}"
        f"--volume={result_path}:/test_output "
        f"--volume={server_log_path}:/var/log/clickhouse-server "
        f"--cap-add=SYS_PTRACE {env_str} {image}"
    )


def process_results(
    result_directory: Path,
    server_log_path: Path,
) -> Tuple[str, str, TestResults, List[Path]]:
    test_results = []  # type: TestResults
    additional_files = []  # type: List[Path]
    # Just upload all files from result_directory.
    # If task provides processed results, then it's responsible for content of result_directory.
    if result_directory.exists():
        additional_files = [p for p in result_directory.iterdir() if p.is_file()]

    if server_log_path.exists():
        additional_files = additional_files + [
            p for p in server_log_path.iterdir() if p.is_file()
        ]

    status = []
    status_path = result_directory / "check_status.tsv"
    if status_path.exists():
        logging.info("Found check_status.tsv")
        with open(status_path, "r", encoding="utf-8") as status_file:
            status = list(csv.reader(status_file, delimiter="\t"))

    if len(status) != 1 or len(status[0]) != 2:
        logging.info("Files in result folder %s", os.listdir(result_directory))
        return "error", "Invalid check_status.tsv", test_results, additional_files
    state, description = status[0][0], status[0][1]

    try:
        results_path = result_directory / "test_results.tsv"

        if results_path.exists():
            logging.info("Found %s", results_path.name)
        else:
            logging.info("Files in result folder %s", os.listdir(result_directory))
            return "error", "Not found test_results.tsv", test_results, additional_files

    except Exception as e:
        return (
            "error",
            f"Cannot parse test_results.tsv ({e})",
            test_results,
            additional_files,
        )

    return state, description, test_results, additional_files


def parse_args():
    parser = argparse.ArgumentParser()
    parser.add_argument("check_name")
    return parser.parse_args()


def main():
    logging.basicConfig(level=logging.INFO)

    stopwatch = Stopwatch()

    temp_path = Path(TEMP_PATH)
    temp_path.mkdir(parents=True, exist_ok=True)

    reports_path = Path(REPORT_PATH)

    args = parse_args()
    check_name = args.check_name

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

    pr_info = PRInfo()

    commit = get_commit(gh, pr_info.sha)
    atexit.register(update_mergeable_check, commit, pr_info, check_name)

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

    image_name = get_image_name()
    docker_image = pull_image(get_docker_image(image_name))

    packages_path = temp_path / "packages"
    packages_path.mkdir(parents=True, exist_ok=True)

    download_all_deb_packages(check_name, reports_path, packages_path)

    server_log_path = temp_path / "server_log"
    server_log_path.mkdir(parents=True, exist_ok=True)

    result_path = temp_path / "result_path"
    result_path.mkdir(parents=True, exist_ok=True)

    run_log_path = result_path / "run.log"

    additional_envs = []  # type: List[str]

    ci_logs_credentials = CiLogsCredentials(temp_path / "export-logs-config.sh")
    ci_logs_args = ci_logs_credentials.get_docker_arguments(
        pr_info, stopwatch.start_time_str, check_name
    )

    run_command = get_run_command(
        packages_path,
        result_path,
        server_log_path,
        additional_envs,
        ci_logs_args,
        docker_image,
    )
    logging.info("Going to run ClickBench: %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")

    try:
        subprocess.check_call(f"sudo chown -R ubuntu:ubuntu {temp_path}", shell=True)
    except subprocess.CalledProcessError:
        logging.warning("Failed to change files owner in %s, ignoring it", temp_path)

    ci_logs_credentials.clean_ci_logs_from_credentials(run_log_path)
    s3_helper = S3Helper()

    state, description, test_results, additional_logs = process_results(
        result_path, server_log_path
    )
    state = override_status(state, check_name)

    ch_helper = ClickHouseHelper()

    report_url = upload_results(
        s3_helper,
        pr_info.number,
        pr_info.sha,
        test_results,
        [run_log_path] + additional_logs,
        check_name,
    )

    print(f"::notice:: {check_name} Report url: {report_url}")
    post_commit_status(
        commit, state, report_url, description, check_name, pr_info, dump_to_file=True
    )

    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 != "success":
        if FORCE_TESTS_LABEL in pr_info.labels:
            print(f"'{FORCE_TESTS_LABEL}' enabled, will report success")
        else:
            sys.exit(1)


if __name__ == "__main__":
    main()