#!/usr/bin/python3
#******************************************************************************
# Copyright (c) Huawei Technologies Co., Ltd. 2020-2020. All rights reserved.
# licensed under the Mulan PSL v2.
# You can use this software according to the terms and conditions of the Mulan PSL v2.
# You may obtain a copy of Mulan PSL v2 at:
#     http://license.coscl.org.cn/MulanPSL2
# THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND, EITHER EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT, MERCHANTABILITY OR FIT FOR A PARTICULAR
# PURPOSE.
# See the Mulan PSL v2 for more details.
# ******************************************************************************/
"""
Review tool for openEuler submission
"""
import os
import argparse
import subprocess

import gitee

def check_repository_changes():
    lst_files = subprocess.getoutput("git diff --name-only remotes/origin/master..")
    for item in lst_files.splitlines():
        if item.startswith("repository/src-openeuler.yaml"):
            return True
    else:
        return False

def check_repository_mgmt_changes():
    lst_files = subprocess.getoutput("git diff --name-only remotes/origin/master..")
    for item in lst_files.splitlines():
        if item.startswith("sig/sigs.yaml"):
            return True
    else:
        return False

def check_maintainer_changes():
    """
    return a list of SIGs with changed maintainer
    """
    sigs = []
    lst_files = subprocess.getoutput("git diff --name-only remotes/origin/master..")
    for item in lst_files.splitlines():
        if item.startswith("sig") and item.endswith("OWNERS"):
            sigs.append(item.split("/")[1])
    return sigs
    

def review(pr):
    review_body = ""
    review_body += "[ ] PR的标题是否清晰易懂 ? / Is the Title of this PR self-explain ?\n"
    review_body += "[ ] PR的内容描述是否详细具体 ? / Is the description of this PR detailed ?\n"
    review_body += "[ ] PR和实际代码修改是否一致 ? / Does the PR match the code changes ?\n"
    sigs = check_maintainer_changes()
    if sigs:
        review_body += "发现维护者变更 / Changes in maintainship detected: \n"
        review_body += "[ ] 如果新增维护者，有没有对他/她能力的客观说明 ? / If new maintainer added, are there any assertion on his/her capability on maintainship ?\n"
    for sig in sigs:
        review_body += "[ ]  {sig} 中的其他维护者是否同意 增加/删除 维护者 ? / Do other maintainers of {sig} also agree to add/remove his/her as a maintainer ?\n".format(sig=sig)
    if check_repository_mgmt_changes():
        review_body += "发现 sigs.yaml 变更 / Changes in sigs.yaml detected: \n"
        review_body += "[ ] 是否所有变更的代码仓都被恰当的 SIG 管理 ? / Are all changed repositories managed by proper SIG ?\n"
        review_body += "[ ] 是否所有受影响的 SIG 的维护者都同意这个变更 ? / Do all affected SIG maintainers agree the change ?\n"
    if check_repository_changes():
        review_body += "[ ] 新引入的代码仓的license授权是否都与 openEuler 兼容 ? / Do newly introduced repository license compatible with openEuler ?\n"
    return review_body

def main():
    """
    Main entrance of the functionality
    """
    pars = argparse.ArgumentParser()
    pars.add_argument("-p", "--pull", type=str, help="Number ID of Pull Request", required=True)
    pars.add_argument("-r", "--reuse", help="Reuse current local git dirctory", action="store_true")

    args = pars.parse_args()

    user_gitee = gitee.Gitee()

    gitee_url = "git@gitee.com:openeuler/community"

    if not args.reuse:
        subprocess.call(["git", "clone", gitee_url])
        os.chdir(args.repo.split('/')[1])

    subprocess.call(["git", "fetch", gitee_url,
                     "pull/{n}/head:pr_{n}".format(n=args.pull)])

    print("You are reviewing pull {n}".format(n=args.pull))

    subprocess.call(["git", "checkout", "pr_{n}".format(n=args.pull)])
    subprocess.call(["git", "merge", "--no-edit", "master"])

    pr = user_gitee.get_pr("community", args.pull, "openeuler")
    review_comment = review(pr)

    user_gitee.create_pr_comment("community", args.pull, review_comment, "openeuler")

if __name__ == "__main__":
    main()