# Copyright (c) 2009, Willow Garage, Inc.
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#       notice, this list of conditions and the following disclaimer.
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#       documentation and/or other materials provided with the distribution.
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#       contributors may be used to endorse or promote products derived from
#       this software without specific prior written permission.
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# Author Tully Foote/tfoote@willowgarage.com

import subprocess

from rospkg.os_detect import OS_OPENSUSE

from .pip import PIP_INSTALLER
from .source import SOURCE_INSTALLER
from ..installers import PackageManagerInstaller

# zypper package manager key
ZYPPER_INSTALLER = 'zypper'


def register_installers(context):
    context.set_installer(ZYPPER_INSTALLER, ZypperInstaller())


def register_platforms(context):
    context.add_os_installer_key(OS_OPENSUSE, SOURCE_INSTALLER)
    context.add_os_installer_key(OS_OPENSUSE, PIP_INSTALLER)
    context.add_os_installer_key(OS_OPENSUSE, ZYPPER_INSTALLER)
    context.set_default_os_installer_key(OS_OPENSUSE, lambda self: ZYPPER_INSTALLER)


def rpm_detect(packages):
    installed = []
    for p in packages:
        if not subprocess.call(['rpm', '-q', '--whatprovides', p]):
            installed.append(p)
    return installed


class ZypperInstaller(PackageManagerInstaller):
    """
    This class provides the functions for installing using zypper.
    """

    def __init__(self):
        super(ZypperInstaller, self).__init__(rpm_detect)

    def get_install_command(self, resolved, interactive=True, reinstall=False, quiet=False):
        packages = self.get_packages_to_install(resolved, reinstall=reinstall)
        if not packages:
            return []
        if not interactive:
            return [self.elevate_priv(['zypper', 'install', '-yl']) + packages]
        else:
            return [self.elevate_priv(['zypper', 'install']) + packages]
