from fabric.api import env, task
from fabric.operations import run

import logging

from utils import virtualenv_source, virtualenv
from utils import print_console


@task
def setup_virtualenv():
    configuration = env.config

    if env.debug:
        logging.basicConfig(
            format='\n%(levelname)s: deploy.setup_virtualenv %(message)s',
            level=logging.DEBUG)

    mkvirtualenv_cmd = "mkvirtualenv --no-site-packages " \
        "{virtualenv_name}".format(
            virtualenv_name=configuration.virtualenv.name)

    if env.debug:
        logging.debug("virtualenv.workon        : %s"
                      % configuration.virtualenv.workon)

        logging.debug("virtualenv.activate      : %s"
                      % configuration.virtualenv.activate)

        logging.debug("virtualenv.name          : %s"
                      % configuration.virtualenv.name)

        logging.debug("virtualenv.paths.bin     : %s"
                      % configuration.virtualenv.paths.bin)

        logging.debug("virtualenv.paths.root    : %s"
                      % configuration.virtualenv.paths.root)

        logging.debug("with virtualenv_source(): run(\"\n\t%s\n\t\")".format(
            mkvirtualenv_cmd))
    else:

        # run("source virtualenvwrapper.sh; mkvirtualenv "
        #     "--no-site-packages {virtualenv_name}".format(
        #         virtualenv_name=configuration.virtualenv.name))

        with virtualenv_source():
            run(mkvirtualenv_cmd)


@task
def setup():
    """
    install all packages via pip
    """
    configuration = env.config

    if env.debug:
        logging.basicConfig(
            format='\n%(levelname)s: deploy.pip %(message)s',
            level=logging.DEBUG)

    pipinstall_cmd = "pip install -r {requirements}".format(
        requirements=configuration.virtualenv.requirements)

    if env.debug:
        logging.debug("with virtualenv(): run(\"\n\t%s\n\t\")" %
                      pipinstall_cmd)
    else:
        with virtualenv():
            run(pipinstall_cmd)


@task
def install(package=None):
    """
    install a packages via pip
    """
    configuration = env.config

    import sys

    if not package:
        print_console("you must specify a package to be installed")
        sys.exit()

    if package == "--all":
        pipinstall_cmd = "pip install -r {requirements_file}".format(
            requirements_file=configuration.virtualenv.requirements)
    else:
        pipinstall_cmd = "pip install {package}".format(
            package=package)

    if env.debug:
        print_console("pipinstall_cmd   : %s" % pipinstall_cmd)

    else:
        with virtualenv():
            run(pipinstall_cmd)


@task
def freeze(param=False):
    configuration = env.config

    msg_help = """
    pip.freeze takes one of three values:
    \thelp - this help message
    \tTrue - update the pip package list the freeze output
    \tFalse (default) - print the freeze output to the console
    """

    from utils import booleanize, handle_help
    import sys

    if handle_help(param, msg_help, 'help'):
        sys.exit()
    else:
        try:
            param = booleanize(param)
        except TypeError:
            print "the parameter value you gave,  \"%s\"   , is not" \
                " a valid parameter." % param
            print msg_help
            sys.exit()

    if param:
        cmd_pipfreeze = "pip freeze > {requirements}".format(
            requirements=configuration.virtualenv.requirements)
    else:
        cmd_pipfreeze = "pip freeze"

    with virtualenv():
        run(cmd_pipfreeze)