#!/usr/bin/env python3
import argparse
import json
import logging
import os
import sys
from pathlib import Path
from typing import List

from env_helper import (
    GITHUB_JOB_URL,
    GITHUB_REPOSITORY,
    GITHUB_SERVER_URL,
    REPORT_PATH,
    TEMP_PATH,
    CI_CONFIG_PATH,
    IS_CI,
)
from pr_info import PRInfo
from report import (
    ERROR,
    PENDING,
    SUCCESS,
    BuildResult,
    JobReport,
    create_build_html_report,
    get_worst_status,
    FAILURE,
)
from stopwatch import Stopwatch
from ci_config import CI

# Old way to read the neads_data
NEEDS_DATA_PATH = os.getenv("NEEDS_DATA_PATH", "")
# Now it's set here. Two-steps migration for backward compatibility
NEEDS_DATA = os.getenv("NEEDS_DATA", "")


def main():
    logging.basicConfig(level=logging.INFO)
    stopwatch = Stopwatch()
    temp_path = Path(TEMP_PATH)
    reports_path = Path(REPORT_PATH)
    temp_path.mkdir(parents=True, exist_ok=True)

    logging.info(
        "Reports found:\n %s",
        "\n ".join(p.as_posix() for p in reports_path.rglob("*.json")),
    )

    build_check_name = CI.JobNames.BUILD_CHECK

    pr_info = PRInfo()

    args = parse_args()

    if (CI_CONFIG_PATH or IS_CI) and not args.reports:
        # In CI only specific builds might be manually selected, or some wf does not build all builds.
        #   Filtering @builds_for_check to verify only builds that are present in the current CI workflow
        with open(CI_CONFIG_PATH, encoding="utf-8") as jfd:
            ci_config = json.load(jfd)
        all_ci_jobs = (
            ci_config["jobs_data"]["jobs_to_skip"]
            + ci_config["jobs_data"]["jobs_to_do"]
        )
        builds_for_check = [job for job in CI.BuildNames if job in all_ci_jobs]
        print("NOTE: builds for check taken from ci configuration")
    else:
        builds_for_check = parse_args().reports
        for job in builds_for_check:
            assert job in CI.BuildNames, "Builds must be known build job names"
        print("NOTE: builds for check taken from input arguments")

    print(f"NOTE: following build reports will be checked: [{builds_for_check}]")

    required_builds = len(builds_for_check)
    missing_builds = 0

    # Collect reports from json artifacts
    build_results = []  # type: List[BuildResult]
    for build_name in builds_for_check:
        build_result = BuildResult.load_any(
            build_name, pr_info.number, pr_info.head_ref
        )
        if not build_result:
            if build_name == CI.BuildNames.FUZZERS:
                logging.info("Build [%s] is missing - skip", CI.BuildNames.FUZZERS)
                continue
            logging.warning("Build results for %s is missing", build_name)
            build_result = BuildResult.missing_result("missing")
            build_result.job_name = build_name
            build_result.status = PENDING
            logging.info(
                "There is missing report for %s, created a dummy result %s",
                build_name,
                build_result,
            )
            missing_builds += 1
            build_results.insert(0, build_result)
        else:
            assert (
                pr_info.head_ref == build_result.head_ref or pr_info.number > 0
            ), "BUG. if not a PR, report must be created on the same branch"
            build_results.append(build_result)

    # Calculate artifact groups like packages and binaries
    total_groups = sum(len(br.grouped_urls) for br in build_results)
    ok_groups = sum(
        len(br.grouped_urls) for br in build_results if br.status == SUCCESS
    )
    logging.info("Totally got %s artifact groups", total_groups)
    if total_groups == 0:
        logging.error("No success builds, failing check without creating a status")
        sys.exit(1)

    branch_url = f"{GITHUB_SERVER_URL}/{GITHUB_REPOSITORY}/commits/master"
    branch_name = "master"
    if pr_info.number != 0:
        branch_name = f"PR #{pr_info.number}"
        branch_url = f"{GITHUB_SERVER_URL}/{GITHUB_REPOSITORY}/pull/{pr_info.number}"
    commit_url = f"{GITHUB_SERVER_URL}/{GITHUB_REPOSITORY}/commit/{pr_info.sha}"
    task_url = GITHUB_JOB_URL()
    report = create_build_html_report(
        build_check_name,
        build_results,
        task_url,
        branch_url,
        branch_name,
        commit_url,
    )

    report_path = temp_path / "report.html"
    report_path.write_text(report, encoding="utf-8")

    # Prepare a commit status
    summary_status = get_worst_status(br.status for br in build_results)

    # Check if there are no builds at all, do not override bad status
    if summary_status == SUCCESS:
        if missing_builds:
            summary_status = FAILURE
        elif ok_groups == 0:
            summary_status = ERROR

    description = ""

    if missing_builds:
        description = f"{missing_builds} of {required_builds} builds are missing."

    description += f" {ok_groups}/{total_groups} artifact groups are OK"

    JobReport(
        description=description,
        test_results=[],
        status=summary_status,
        start_time=stopwatch.start_time_str,
        duration=stopwatch.duration_seconds,
        additional_files=[report_path],
    ).dump()

    # We should fail the report job to rerun it in the following attempts
    if summary_status != SUCCESS:
        sys.exit(1)


def parse_args():
    parser = argparse.ArgumentParser("Generates overall build report")

    parser.add_argument(
        "--reports",
        nargs="+",
        help="List of build reports to check",
    )
    return parser.parse_args()


if __name__ == "__main__":
    main()