# MIT License
#
# Copyright (c) 2019 Joakim Sørensen @ludeeus
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.

import re
import sys
from github import Github

BODY = """
[![Downloads for this release](https://img.shields.io/github/downloads/tomaae/homeassistant-mikrotik_router/{version}/total.svg)](https://github.com/tomaae/homeassistant-mikrotik_router/releases/{version})

{changes}
"""

CHANGES = """
## Changes

{integration_changes}

"""

CHANGE = "- [{line}]({link}) @{author}\n"
NOCHANGE = "_No changes in this release._"

GITHUB = Github(sys.argv[2])


def new_commits(repo, sha):
    """Get new commits in repo."""
    from datetime import datetime

    dateformat = "%a, %d %b %Y %H:%M:%S GMT"
    release_commit = repo.get_commit(sha)
    since = datetime.strptime(release_commit.last_modified, dateformat)
    commits = repo.get_commits(since=since)
    if len(list(commits)) == 1:
        return False
    return reversed(list(commits)[:-1])


def last_integration_release(github, skip=True):
    """Return last release."""
    repo = github.get_repo("tomaae/homeassistant-mikrotik_router")
    tag_sha = None
    data = {}
    tags = list(repo.get_tags())
    reg = "(v|^)?(\\d+\\.)?(\\d+\\.)?(\\*|\\d+)$"
    if tags:
        for tag in tags:
            tag_name = tag.name
            if re.match(reg, tag_name):
                tag_sha = tag.commit.sha
                if skip:
                    skip = False
                    continue
                break
    data["tag_name"] = tag_name
    data["tag_sha"] = tag_sha
    return data


def get_integration_commits(github, skip=True):
    changes = ""
    repo = github.get_repo("tomaae/homeassistant-mikrotik_router")
    commits = new_commits(repo, last_integration_release(github, skip)["tag_sha"])

    if not commits:
        changes = NOCHANGE
    else:
        for commit in commits:
            msg = repo.get_git_commit(commit.sha).message
            if "flake" in msg:
                continue
            if " workflow" in msg:
                continue
            if " test" in msg:
                continue
            if "docs" in msg:
                continue
            if "dev debug" in msg:
                continue
            if "Merge branch " in msg:
                continue
            if "Merge pull request " in msg:
                continue
            if "\n" in msg:
                msg = msg.split("\n")[0]
            if commit.author:
                ath = commit.author
            else:
                ath = "Unknown"
            changes += CHANGE.format(line=msg, link=commit.html_url, author=ath)

    return changes


# Update release notes:
UPDATERELEASE = str(sys.argv[4])
REPO = GITHUB.get_repo("tomaae/homeassistant-mikrotik_router")
if UPDATERELEASE == "yes":
    VERSION = str(sys.argv[6]).replace("refs/tags/", "")
    RELEASE = REPO.get_release(VERSION)
    RELEASE.update_release(
        name=f"Mikrotik Router {VERSION}",
        message=BODY.format(
            version=VERSION,
            changes=CHANGES.format(
                integration_changes=get_integration_commits(GITHUB),
            ),
        ),
    )
else:
    integration_changes = get_integration_commits(GITHUB, False)
    if integration_changes != NOCHANGE:
        VERSION = last_integration_release(GITHUB, False)["tag_name"]
        VERSION = f"{VERSION[:-1]}{int(VERSION[-1])+1}"
        REPO.create_issue(
            title=f"Create release {VERSION}?",
            labels=["New release"],
            assignee="tomaae",
            body=CHANGES.format(
                integration_changes=integration_changes,
            ),
        )
    else:
        print("Not enough changes for a release.")