#!/usr/bin/env python3

from __future__ import print_function

__copyright__ = """
/*
 * Copyright (c) 2020-2023, Arm Limited. All rights reserved.
 *
 * SPDX-License-Identifier: BSD-3-Clause
 *
 */
 """

"""
Script for waiting for device test backend (LAVA/Tux) jobs and parsing the results
"""

import os
import time
import yaml
import argparse
import shutil
import logging
import json
from xmlrpc.client import ProtocolError
from jinja2 import Environment, FileSystemLoader
from lava_helper import test_lava_dispatch_credentials, LAVA_RPC_connector
from lava_submit_jobs import submit_lava_jobs
import codecov_helper


_log = logging.getLogger("lavaci")


def wait_for_jobs(user_args):
    job_list = user_args.job_ids.split(",")
    lava = test_lava_dispatch_credentials(user_args)
    finished_jobs = get_finished_jobs(job_list, user_args, lava)
    resubmit_jobs = resubmit_failed_jobs(finished_jobs, user_args)
    if resubmit_jobs:
        _log.info("Waiting for resubmitted jobs: %s", resubmit_jobs)
        finished_resubmit_jobs = get_finished_jobs(resubmit_jobs, user_args, lava)
        finished_jobs.update(finished_resubmit_jobs)
    return finished_jobs

def process_finished_jobs(finished_jobs, user_args):
    print_lava_urls(finished_jobs, user_args)
    test_report(finished_jobs, user_args)
    job_links(finished_jobs, user_args)
    codecov_helper.coverage_reports(finished_jobs, user_args)

def get_finished_jobs(job_list, user_args, lava):
    _log.info("Waiting for %d LAVA/Tux jobs", len(job_list))

    fetched_artifacts = set()

    def inline_fetch_artifacts(job_id, info):
        try:
            if user_args.artifacts_path:
                info['job_dir'] = os.path.join(user_args.artifacts_path, "{}_{}".format(job_id, info['description']))
            fetch_artifacts_for_job(job_id, info, user_args, lava)
            fetched_artifacts.add(job_id)
        except Exception as e:
            _log.exception("")
            _log.warning("Failed to fetch artifacts for job %s inline, will retry later", job_id)

    finished_jobs = lava.block_wait_for_jobs(job_list, user_args.dispatch_timeout, 5, callback=inline_fetch_artifacts)
    unfinished_jobs = [item for item in job_list if item not in finished_jobs]
    for job in unfinished_jobs:
        _log.info("Cancelling unfinished job %d because of timeout.", job)
        lava.cancel_job(job)
    if len(unfinished_jobs) > 0:
        _log.info("Job fails because some test jobs have been cancelled.")
    if user_args.artifacts_path:
        for job, info in finished_jobs.items():
            info['job_dir'] = os.path.join(user_args.artifacts_path, "{}_{}".format(str(job), info['description']))
        to_fetch = {job_id: info for job_id, info in finished_jobs.items() if job_id not in fetched_artifacts}
        _log.info("Fetching artifacts for remaining jobs: %s", to_fetch.keys())
        fetch_artifacts(to_fetch, user_args, lava)
    return finished_jobs

def resubmit_failed_jobs(jobs, user_args):
    if not jobs:
        return []
    time.sleep(2) # be friendly to LAVA
    failed_job = []
    os.makedirs('failed_jobs', exist_ok=True)
    for job_id, info in jobs.items():
        if not (info['health'] == "Complete" and info['state'] == "Finished"):
            _log.warning(
                "Will resubmit job %s because of its state: %s, health: %s",
                job_id, info["state"], info["health"]
            )
            job_dir = info['job_dir']
            def_path = os.path.join(job_dir, 'definition.yaml')
            os.rename(def_path, 'failed_jobs/{}_definition.yaml'.format(job_id))
            shutil.rmtree(job_dir)
            failed_job.append(job_id)
    for failed_job_id in failed_job:
        jobs.pop(failed_job_id)
    resubmitted_jobs = submit_lava_jobs(user_args, job_dir='failed_jobs')
    return resubmitted_jobs


def fetch_artifacts_for_job(job_id, info, user_args, lava):
    if not user_args.artifacts_path:
        return
    job_dir = info['job_dir']
    t = time.time()

    retry_delay = 3
    for retry in range(3, 0, -1):
        try:
            os.makedirs(job_dir, exist_ok=True)
            def_path = os.path.join(job_dir, 'definition.yaml')
            target_log = os.path.join(job_dir, 'target_log.txt')
            config = os.path.join(job_dir, 'config.tar.bz2')
            results_file = os.path.join(job_dir, 'results.yaml')
            definition = lava.get_job_definition(job_id, info, def_path)
            info['metadata'] = definition.get('metadata', {})
            time.sleep(0.2) # be friendly to LAVA
            lava.get_job_log(job_id, target_log)
            time.sleep(0.2)
            lava.get_job_config(job_id, config)
            time.sleep(0.2)
            lava.get_job_results(job_id, info, results_file)
            break
        except (ProtocolError, IOError, yaml.error.YAMLError) as e:
            if retry == 1:
                raise
            else:
                _log.warning("fetch_artifacts(%s): Error %r occurred, retrying", job_id, e)
                time.sleep(retry_delay)
                retry_delay *= 2

    _log.info("Fetched artifacts for job %s in %ds", job_id, time.time() - t)
    codecov_helper.extract_trace_data(target_log, job_dir)


def fetch_artifacts(jobs, user_args, lava):
    if not user_args.artifacts_path:
        return

    for job_id, info in jobs.items():
        fetch_artifacts_for_job(job_id, info, user_args, lava)


def lava_id_to_url(id, user_args):
    if LAVA_RPC_connector.is_tux_id(id):
        return "https://tuxapi.tuxsuite.com/v1/groups/tfc/projects/ci/tests/{}".format(id)
    else:
        return "{}/scheduler/job/{}".format(user_args.lava_url, id)

def job_links(jobs, user_args):
    job_links = ""
    for job, info in jobs.items():
        job_links += "\nLAVA Test Config:\n"
        job_links += "Config Name: {}\n".format(info['metadata']['build_name'])
        job_links += "Test Result: {}\n".format(info['result'])
        job_links += "Device Type: {}\n".format(info['metadata']['device_type'])
        job_links += "Build link: {}\n".format(info['metadata']['build_job_url'])
        job_links += "LAVA link: {}\n".format(lava_id_to_url(job, user_args))
        job_links += "TFM LOG: {}artifact/{}/target_log.txt\n".format(os.getenv("BUILD_URL"), info['job_dir'])

        # Save job information to share folder.
        if os.getenv('JOB_NAME') == 'tf-m-nightly-performance':
            with open(os.path.join(os.getenv('SHARE_FOLDER'), 'performance_config.txt'), 'a') as f:
                f.write(info['metadata']['build_name'] + ' ' + info['job_dir'] + '\n')

    print(job_links)

def remove_lava_dupes(results):
    for result in results:
        if result['result'] != 'pass':
            if result['suite'] == "lava":
                for other in [x for x in results if x != result]:
                    if other['name'] == result['name']:
                        if other['result'] == 'pass':
                            results.remove(result)
    return(results)

def test_report(jobs, user_args):
    # parsing of test results is WIP
    fail_j = []
    jinja_data = []
    for job, info in jobs.items():
        info['result'] = 'SUCCESS'
        if info['health'] != 'Complete':
            info['result'] = 'FAILURE'
            fail_j.append(job)
            continue
        results_file = os.path.join(info['job_dir'], 'results.yaml')
        if not os.path.exists(results_file) or (os.path.getsize(results_file) == 0):
            info['result'] = 'FAILURE'
            fail_j.append(job)
            continue
        with open(results_file, "r") as F:
            res_data = F.read()
        results = yaml.safe_load(res_data)
        non_lava_results = [x for x in results if x['suite'] != 'lava' or x['name'] == 'lava-test-monitor']
        info['lava_url'] = lava_id_to_url(job, user_args)
        info['artifacts_dir'] = info['job_dir']
        jinja_data.append({job: [info, non_lava_results]})
        for result in non_lava_results:
            if result['result'] == 'fail':
                info['result'] = 'FAILURE'
                fail_j.append(job) if job not in fail_j else fail_j
        time.sleep(0.5) # be friendly to LAVA
    data = {}
    data['jobs'] = jinja_data
    render_jinja(data)

def render_jinja(data):
    work_dir = os.path.join(os.path.abspath(os.path.dirname(__file__)), "jinja2_templates")
    template_loader = FileSystemLoader(searchpath=work_dir)
    template_env = Environment(loader=template_loader)
    html = template_env.get_template("test_summary.jinja2").render(data)
    csv = template_env.get_template("test_summary_csv.jinja2").render(data)
    with open('test_summary.html', "w") as F:
        F.write(html)
    with open('test_summary.csv', "w") as F:
        F.write(csv)

def print_lava_urls(jobs, user_args):
    output = [lava_id_to_url(x, user_args) for x in jobs]
    info_print("LAVA/Tux jobs triggered for this build: {}".format(output))


def info_print(line, silent=True):
    if not silent:
        print("INFO: {}".format(line))

# WARNING: Setting this to >1 is a last resort, temporary stop-gap measure,
# which will overload LAVA and jeopardize stability of the entire TF CI.
INEFFICIENT_RETRIES = 1


def main(user_args):
    """ Main logic """
    for try_time in range(INEFFICIENT_RETRIES):
        try:
            finished_jobs = wait_for_jobs(user_args)
            break
        except Exception as e:
            if try_time < INEFFICIENT_RETRIES - 1:
                _log.exception("Exception in wait_for_jobs")
                _log.info("Will try to get LAVA jobs again, this was try: %d", try_time)
            else:
                raise e
    process_finished_jobs(finished_jobs, user_args)
    if len(finished_jobs) < len(user_args.job_ids.split(",")):
        raise Exception("Some LAVA jobs cancelled.")

def get_cmd_args():
    """ Parse command line arguments """

    # Parse command line arguments to override config
    parser = argparse.ArgumentParser(description="Lava Wait Jobs")
    cmdargs = parser.add_argument_group("Lava Wait Jobs")

    # Configuration control
    cmdargs.add_argument(
        "--lava-url", dest="lava_url", action="store", help="LAVA lab URL (without RPC2)"
    )
    cmdargs.add_argument(
        "--job-ids", dest="job_ids", action="store", required=True, help="Comma separated list of job IDS"
    )
    cmdargs.add_argument(
        "--lava-token", dest="lava_token", action="store", help="LAVA auth token"
    )
    cmdargs.add_argument(
        "--lava-user", dest="lava_user", action="store", help="LAVA username"
    )
    cmdargs.add_argument(
        "--use-env", dest="token_from_env", action="store_true", default=False, help="Use LAVA auth info from environment"
    )
    cmdargs.add_argument(
        "--lava-timeout", dest="dispatch_timeout", action="store", type=int, default=3600, help="Time in seconds to wait for all jobs"
    )
    cmdargs.add_argument(
        "--artifacts-path", dest="artifacts_path", action="store", help="Download LAVA artifacts to this directory"
    )
    return parser.parse_args()


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