#!/usr/bin/env python3
import logging
import subprocess
import os
import csv
import sys

from github import Github

from env_helper import RUNNER_TEMP, GITHUB_WORKSPACE
from s3_helper import S3Helper
from pr_info import PRInfo
from get_robot_token import get_best_robot_token
from upload_result_helper import upload_results
from docker_pull_helper import get_image_with_version
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

NAME = "Style Check (actions)"


def process_result(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]

    try:
        results_path = os.path.join(result_folder, "test_results.tsv")
        test_results = list(csv.reader(open(results_path, 'r'), delimiter='\t'))
        if len(test_results) == 0:
            raise Exception("Empty results")

        return state, description, test_results, additional_files
    except Exception:
        if state == "success":
            state, description = "error", "Failed to read test_results.tsv"
        return state, description, test_results, additional_files


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

    stopwatch = Stopwatch()

    repo_path = GITHUB_WORKSPACE
    temp_path = os.path.join(RUNNER_TEMP, 'style_check')

    pr_info = PRInfo()

    gh = Github(get_best_robot_token())

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

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

    docker_image = get_image_with_version(temp_path, 'clickhouse/style-test')
    s3_helper = S3Helper('https://s3.amazonaws.com')

    subprocess.check_output(f"docker run -u $(id -u ${{USER}}):$(id -g ${{USER}}) --cap-add=SYS_PTRACE --volume={repo_path}:/ClickHouse --volume={temp_path}:/test_output {docker_image}", shell=True)
    state, description, test_results, additional_files = process_result(temp_path)
    ch_helper = ClickHouseHelper()
    mark_flaky_tests(ch_helper, NAME, test_results)

    report_url = upload_results(s3_helper, pr_info.number, pr_info.sha, test_results, additional_files, NAME)
    print("::notice ::Report url: {}".format(report_url))
    post_commit_status(gh, pr_info.sha, 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, NAME)
    ch_helper.insert_events_into(db="gh-data", table="checks", events=prepared_events)