# Copyright (c) 2012 Roberto Alsina y otros.

# 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.

from __future__ import print_function
from ast import literal_eval
import codecs
from datetime import datetime
import os
import subprocess


from nikola.plugin_categories import Command


class Deploy(Command):
    """Deploy site.  """
    name = "deploy"

    doc_usage = ""
    doc_purpose = "Deploy the site."

    def _execute(self, command, args):
        for command in self.site.config['DEPLOY_COMMANDS']:

            # Get last succesful deploy date
            timestamp_path = os.path.join(self.site.config['CACHE_FOLDER'], 'lastdeploy')
            try:
                with open(timestamp_path, 'rb') as inf:
                    last_deploy = literal_eval(inf.read().strip())
            except Exception:
                last_deploy = datetime(1970, 1, 1)  # NOQA

            print("==>", command)
            ret = subprocess.check_call(command, shell=True)
            if ret != 0:  # failed deployment
                raise Exception("Failed deployment")
        print("Successful deployment")
        new_deploy = datetime.now()
        # Store timestamp of successful deployment
        with codecs.open(timestamp_path, 'wb+', 'utf8') as outf:
            outf.write(repr(new_deploy))
        # Here is where we would do things with whatever is
        # on self.site.timeline and is newer than
        # last_deploy