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#!/usr/bin/env python
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# Copyright 2012-2014 GRNET S.A. All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or
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# without modification, are permitted provided that the following
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# conditions are met:
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#
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#   1. Redistributions of source code must retain the above
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#      copyright notice, this list of conditions and the following
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#      disclaimer.
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#
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#   2. Redistributions in binary form must reproduce the above
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#      copyright notice, this list of conditions and the following
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#      disclaimer in the documentation and/or other materials
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#      provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
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# OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
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# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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# USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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#
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# The views and conclusions contained in the software and
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# documentation are those of the authors and should not be
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# interpreted as representing official policies, either expressed
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# or implied, of GRNET S.A.
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from kamaki.cli.command_tree import CommandTree
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from kamaki.cli.argument import ValueArgument
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from kamaki.cli.history import History
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from kamaki.cli import command
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from kamaki.cli.commands import _command_init, errors
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history_cmds = CommandTree('history', 'Kamaki command history')
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_commands = [history_cmds]
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class _init_history(_command_init):
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    @errors.generic.all
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    @errors.history.init
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    def _run(self):
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        self.history = History(self.config.get('global', 'history_file'))
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        self.history.limit = self.config.get('global', 'history_limit')
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    def main(self):
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        self._run()
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@command(history_cmds)
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class history_show(_init_history):
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    """Show history
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        Featutes:
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        - slice notation (cmd numbers --> N or :N or N: or N1:N2)
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        - text matching (--match)
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    """
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    arguments = dict(
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        match=ValueArgument('Show lines matching this', '--match'),
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    )
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    @errors.generic.all
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    def _run(self, cmd_slice):
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        c = self.history.counter
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        lines = ['%s.\t%s' % (i + c, l) for i, l in enumerate(
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            self.history[:])][cmd_slice]
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        if not isinstance(cmd_slice, slice):
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            lines = [lines, ]
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        if self['match']:
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            lines = [l for l in lines if self._match(l, self['match'])]
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        self.print_items([l[:-1] for l in lines])
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    def main(self, cmd_numbers=''):
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        super(self.__class__, self)._run()
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        sl_args = [
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            int(x) if x else None for x in cmd_numbers.split(':')] if (
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                cmd_numbers) else [None, None]
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        slice_cmds = slice(*sl_args) if len(sl_args) > 1 else sl_args[0]
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        self._run(slice_cmds)
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@command(history_cmds)
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class history_clean(_init_history):
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    """Clean up history (permanent)"""
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    @errors.generic.all
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    def _run(self):
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        self.history.empty()
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    def main(self):
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        super(self.__class__, self)._run()
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        self._run()