#!/usr/bin/env python3

import os
import logging
import sys
import json
import subprocess
import csv

from github import Github

from s3_helper import S3Helper
from get_robot_token import get_best_robot_token
from pr_info import PRInfo, get_event
from build_download_helper import download_all_deb_packages
from upload_result_helper import upload_results
from docker_pull_helper import get_images_with_versions
from commit_status_helper import post_commit_status
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


IMAGES = [
    "clickhouse/integration-tests-runner",
    "clickhouse/mysql-golang-client",
    "clickhouse/mysql-java-client",
    "clickhouse/mysql-js-client",
    "clickhouse/mysql-php-client",
    "clickhouse/postgresql-java-client",
    "clickhouse/integration-test",
    "clickhouse/kerberos-kdc",
    "clickhouse/integration-helper",
]

def get_json_params_dict(check_name, pr_info, docker_images, run_by_hash_total, run_by_hash_num):
    return {
        'context_name': check_name,
        'commit': pr_info.sha,
        'pull_request': pr_info.number,
        'pr_info': {'changed_files' : list(pr_info.changed_files)},
        'docker_images_with_versions': docker_images,
        'shuffle_test_groups': False,
        'use_tmpfs': False,
        'disable_net_host': True,
        'run_by_hash_total': run_by_hash_total,
        'run_by_hash_num': run_by_hash_num,
    }

def get_env_for_runner(build_path, repo_path, result_path, work_path):
    binary_path = os.path.join(build_path, 'clickhouse')
    odbc_bridge_path = os.path.join(build_path, 'clickhouse-odbc-bridge')
    library_bridge_path = os.path.join(build_path, 'clickhouse-library-bridge')

    my_env = os.environ.copy()
    my_env["CLICKHOUSE_TESTS_BUILD_PATH"] = build_path
    my_env["CLICKHOUSE_TESTS_SERVER_BIN_PATH"] = binary_path
    my_env["CLICKHOUSE_TESTS_CLIENT_BIN_PATH"] = binary_path
    my_env["CLICKHOUSE_TESTS_ODBC_BRIDGE_BIN_PATH"] = odbc_bridge_path
    my_env["CLICKHOUSE_TESTS_LIBRARY_BRIDGE_BIN_PATH"] = library_bridge_path
    my_env["CLICKHOUSE_TESTS_REPO_PATH"] = repo_path
    my_env["CLICKHOUSE_TESTS_RESULT_PATH"] = result_path
    my_env["CLICKHOUSE_TESTS_BASE_CONFIG_DIR"] = f"{repo_path}/programs/server"
    my_env["CLICKHOUSE_TESTS_JSON_PARAMS_PATH"] = os.path.join(work_path, "params.json")
    my_env["CLICKHOUSE_TESTS_RUNNER_RESTART_DOCKER"] = '0'

    return my_env

def process_results(result_folder):
    test_results = []
    additional_files = []
    # Just upload all files from result_folder.
    # If task provides processed results, then it's responsible for content of result_folder.
    if os.path.exists(result_folder):
        test_files = [f for f in os.listdir(result_folder) if os.path.isfile(os.path.join(result_folder, f))]
        additional_files = [os.path.join(result_folder, f) for f in test_files]

    status = []
    status_path = os.path.join(result_folder, "check_status.tsv")
    if os.path.exists(status_path):
        logging.info("Found test_results.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_folder))
        return "error", "Invalid check_status.tsv", test_results, additional_files
    state, description = status[0][0], status[0][1]

    results_path = os.path.join(result_folder, "test_results.tsv")
    if os.path.exists(results_path):
        with open(results_path, 'r', encoding='utf-8') as results_file:
            test_results = list(csv.reader(results_file, delimiter='\t'))
    if len(test_results) == 0:
        return "error", "Empty test_results.tsv", test_results, additional_files

    return state, description, test_results, additional_files

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

    stopwatch = Stopwatch()

    temp_path = os.getenv("TEMP_PATH", os.path.abspath("."))
    repo_path = os.getenv("REPO_COPY", os.path.abspath("../../"))
    reports_path = os.getenv("REPORTS_PATH", "./reports")

    check_name = sys.argv[1]

    if 'RUN_BY_HASH_NUM' in os.environ:
        run_by_hash_num = int(os.getenv('RUN_BY_HASH_NUM'))
        run_by_hash_total = int(os.getenv('RUN_BY_HASH_TOTAL'))
        check_name_with_group = check_name + f' [{run_by_hash_num + 1}/{run_by_hash_total}]'
    else:
        run_by_hash_num = 0
        run_by_hash_total = 0
        check_name_with_group = check_name

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

    is_flaky_check = 'flaky' in check_name
    pr_info = PRInfo(get_event(), need_changed_files=is_flaky_check)

    gh = Github(get_best_robot_token())

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

    images = get_images_with_versions(reports_path, IMAGES)
    images_with_versions = {i.name: i.version for i in images}
    result_path = os.path.join(temp_path, "output_dir")
    if not os.path.exists(result_path):
        os.makedirs(result_path)

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

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

    download_all_deb_packages(check_name, reports_path, build_path)

    my_env = get_env_for_runner(build_path, repo_path, result_path, work_path)

    json_path = os.path.join(work_path, 'params.json')
    with open(json_path, 'w', encoding='utf-8') as json_params:
        json_params.write(json.dumps(get_json_params_dict(check_name, pr_info, images_with_versions, run_by_hash_total, run_by_hash_num)))

    output_path_log = os.path.join(result_path, "main_script_log.txt")

    runner_path = os.path.join(repo_path, "tests/integration", "ci-runner.py")
    run_command = f"sudo -E {runner_path} | tee {output_path_log}"

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

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

    state, description, test_results, additional_logs = process_results(result_path)

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

    s3_helper = S3Helper('https://s3.amazonaws.com')
    report_url = upload_results(s3_helper, pr_info.number, pr_info.sha, test_results, [output_path_log] + additional_logs, check_name_with_group, False)
    print(f"::notice ::Report url: {report_url}")
    post_commit_status(gh, pr_info.sha, check_name_with_group, 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_with_group)
    ch_helper.insert_events_into(db="gh-data", table="checks", events=prepared_events)