"""
Based on: https://github.com/wesnoth/wesnoth/blob/b28d8d469af047cbbb20b18757c07b1bfc6afa31/utils/appveyor/irc-notify.py

Authors:
 * Christopher R. Wood
 * Jyrki Vesterinen
 * nexB
 * whitequark

This program is free software; you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software Foundation;
either version 2 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this
program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street,
Fifth Floor, Boston, MA 02110-1301 USA.

Simple AppVeyor IRC notification script.

The first argument is a Freenode channel. Other arguments passed to the script will be
sent as notice messages content and any {var}-formatted environment variables will be
expanded automatically, replaced with a corresponding Appveyor environment variable
value. se commas to delineate multiple messages.

Example:

    export APPVEYOR_URL=https://ci.appveyor.com
    export APPVEYOR_PROJECT_NAME=attributecode
    export APPVEYOR_REPO_COMMIT_AUTHOR=pombredanne
    export APPVEYOR_REPO_COMMIT_TIMESTAMP=2016-10-31
    export APPVEYOR_REPO_PROVIDER=gihub
    export APPVEYOR_REPO_BRANCH=repo_branch
    export APPVEYOR_PULL_REQUEST_TITLE=pull_request_title
    export APPVEYOR_BUILD_VERSION=1
    export APPVEYOR_REPO_COMMIT=22c95b72e29248dc4de9b85e590ee18f6f587de8
    export APPVEYOR_REPO_COMMIT_MESSAGE="some IRC test"
    export APPVEYOR_ACCOUNT_NAME=nexB
    export APPVEYOR_PULL_REQUEST_NUMBER=pull_request_number
    export APPVEYOR_REPO_NAME=nexB/attributecode
    python .appveyor/irc-notify.py '#solvespace-test' '{repo_name}#{build_version} ({branch} - {short_commit} : {author}): {color_green}The build passed.,Change view : {commit_url},Build details : {build_url}

For use in Appveyor's YAML:

    on_success:
      - 'python .appveyor/irc-notify.py ##appveyor-notify-test {repo_name}#{build_version} ({branch} - {short_commit} : {author}): {color_green}The build passed.,Change view : {commit_url},Build details : {build_url}'
    on_failure:
      - 'python .appveyor/irc-notify.py ##appveyor-notify-test {repo_name}#{build_version} ({branch} - {short_commit} : {author}): {color_red}The build failed.,Change view : {commit_url},Build details : {build_url}'

"""

import os, random, socket, ssl, sys, time


def appveyor_vars():
    """
    Return a dict of key value carfted from appveyor environment variables.
    """
    from os import environ

    appveyor_url = environ.get('APPVEYOR_URL')
    message_extended = environ.get('APPVEYOR_REPO_COMMIT_MESSAGE_EXTENDED')
    configuration_name = environ.get('CONFIGURATION')
    branch = environ.get('APPVEYOR_REPO_BRANCH')
    author = environ.get('APPVEYOR_REPO_COMMIT_AUTHOR')
    author_email = environ.get('APPVEYOR_REPO_COMMIT_AUTHOR_EMAIL')
    timestamp = environ.get('APPVEYOR_REPO_COMMIT_TIMESTAMP')
    repo_provider = environ.get('APPVEYOR_REPO_PROVIDER').lower()
    project_name = environ.get('APPVEYOR_PROJECT_NAME')
    project_slug = environ.get('APPVEYOR_PROJECT_SLUG')
    pull_request_title = environ.get('APPVEYOR_PULL_REQUEST_TITLE')
    build_version = environ.get('APPVEYOR_BUILD_VERSION')
    commit = environ.get('APPVEYOR_REPO_COMMIT')
    message = environ.get('APPVEYOR_REPO_COMMIT_MESSAGE')
    account_name = environ.get('APPVEYOR_ACCOUNT_NAME')
    pull_request_number = environ.get('APPVEYOR_PULL_REQUEST_NUMBER')
    repo_name = environ.get('APPVEYOR_REPO_NAME')

    short_commit = commit[:7]
    build_url = '{appveyor_url}/project/{account_name}/{project_slug}/build/{build_version}'.format(**locals())
    commit_url = 'https://{repo_provider}.com/{repo_name}/commit/{commit}'.format(**locals())

    vars = dict(
        appveyor_url=appveyor_url,
        account_name=account_name,
        project_name=project_name,
        project_slug=project_slug,
        build_version=build_version,

        build_url=build_url,

        repo_provider=repo_provider,
        repo_name=repo_name,
        branch=branch,
        configuration_name=configuration_name,
        author=author,
        author_email=author_email,
        timestamp=timestamp,
        commit=commit,
        short_commit=short_commit,
        message=message,
        message_extended=message_extended,

        pull_request_title=pull_request_title,
        pull_request_number=pull_request_number,

        commit_url=commit_url,

        color_green='\x033',
        color_red='\x034',
        bold='\x02',
        underline='\x1f',
        plain='\x0f',
    )
    return vars


if __name__ == '__main__':
    apvy_vars = appveyor_vars()

    channel = sys.argv[1]
    messages = sys.argv[2:]
    messages = ' '.join(messages)
    messages = messages.split(',')
    messages = [msg.format(**apvy_vars).strip() for msg in messages]

    irc_username = 'appveyor-ci'
    irc_nick = irc_username + str(random.randint(1, 9999))

    try:
        sock = ssl.wrap_socket(socket.socket(socket.AF_INET, socket.SOCK_STREAM))
        sock.connect((socket.gethostbyname('chat.freenode.net'), 6697))
        sock.send('NICK {0}\r\nUSER {0} * 0 :{0}\r\n'.format(irc_username).encode('utf_8'))

        file = sock.makefile()
        while file:
            line = file.readline()
            response = line.split()

            if response[0] == 'ERROR':
                break

            elif response[0] == 'PING':
                file.send('PONG {}\r\n'.format(reponse[1]).encode('utf_8'))

            elif response[1] == '433':
                sock.send('NICK {}\r\n'.format(irc_nick).encode('utf_8'))

            elif response[1] in ('376', '422'):
                for msg in messages:
                    print('NOTICE {} :{}'.format(channel, msg))
                    sock.send('NOTICE {} :{}\r\n'.format(channel, msg).encode('utf_8'))
                sock.send('QUIT\r\n')
    except e:
        print(e)