# install.py

# Install CLI command.

#

# Copyright (C) 2014-2016 Red Hat, Inc.

#

# This copyrighted material is made available to anyone wishing to use,

# modify, copy, or redistribute it subject to the terms and conditions of

# the GNU General Public License v.2, or (at your option) any later version.

# This program is distributed in the hope that it will be useful, but WITHOUT

# ANY WARRANTY expressed or implied, including the implied warranties 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.  Any Red Hat trademarks that are incorporated in the

# source code or documentation are not subject to the GNU General Public

# License and may only be used or replicated with the express permission of

# Red Hat, Inc.

#

from __future__ import absolute_import

from __future__ import unicode_literals

import logging

from itertools import chain

import hawkey

import dnf.exceptions

from dnf.cli import commands

from dnf.cli.option_parser import OptionParser

from dnf.i18n import _

logger = logging.getLogger('dnf')

class InstallCommand(commands.Command):

    """A class containing methods needed by the cli to execute the

    install command.

    """

    nevra_forms = {'install-n': hawkey.FORM_NAME,

                   'install-na': hawkey.FORM_NA,

                   'install-nevra': hawkey.FORM_NEVRA}

    alternatives_provide = 'alternative-for({})'

    aliases = ('install', 'localinstall', 'in') + tuple(nevra_forms.keys())

    summary = _('install a package or packages on your system')

    @staticmethod

    def set_argparser(parser):

        parser.add_argument('package', nargs='+', metavar=_('PACKAGE'),

                            action=OptionParser.ParseSpecGroupFileCallback,

                            help=_('Package to install'))

    def configure(self):

        """Verify that conditions are met so that this command can run.

        That there are enabled repositories with gpg keys, and that

        this command is called with appropriate arguments.

        """

        demands = self.cli.demands

        demands.sack_activation = True

        demands.available_repos = True

        demands.resolving = True

        demands.root_user = True

        commands._checkGPGKey(self.base, self.cli)

        if not self.opts.filenames:

            commands._checkEnabledRepo(self.base)

    def run(self):

        err_pkgs = []

        errs = []

        error_module_specs = []

        nevra_forms = self._get_nevra_forms_from_command()

        self.cli._populate_update_security_filter(self.opts, self.base.sack.query())

        if self.opts.command == 'localinstall' and (self.opts.grp_specs or self.opts.pkg_specs):

            self._log_not_valid_rpm_file_paths(self.opts.grp_specs)

            if self.base.conf.strict:

                raise dnf.exceptions.Error(_('Nothing to do.'))

        skipped_grp_specs = []

        if self.opts.grp_specs and self.opts.command != 'localinstall':

            if dnf.base.WITH_MODULES:

                try:

                    module_base = dnf.module.module_base.ModuleBase(self.base)

                    module_base.install(self.opts.grp_specs, strict=self.base.conf.strict)

                except dnf.exceptions.MarkingErrors as e:

                    if e.no_match_group_specs:

                        for e_spec in e.no_match_group_specs:

                            skipped_grp_specs.append(e_spec)

                    if e.error_group_specs:

                        for e_spec in e.error_group_specs:

                            error_module_specs.append("@" + e_spec)

                    module_depsolv_errors = e.module_depsolv_errors

                    if module_depsolv_errors:

                        logger.error(dnf.module.module_base.format_modular_solver_errors(

                            module_depsolv_errors[0]))

            else:

                skipped_grp_specs = self.opts.grp_specs

        if self.opts.filenames and nevra_forms:

            self._inform_not_a_valid_combination(self.opts.filenames)

            if self.base.conf.strict:

                raise dnf.exceptions.Error(_('Nothing to do.'))

        else:

            err_pkgs = self._install_files()

        if skipped_grp_specs and nevra_forms:

            self._inform_not_a_valid_combination(skipped_grp_specs)

            if self.base.conf.strict:

                raise dnf.exceptions.Error(_('Nothing to do.'))

        elif skipped_grp_specs and self.opts.command != 'localinstall':

            self._install_groups(skipped_grp_specs)

        if self.opts.command != 'localinstall':

            errs = self._install_packages(nevra_forms)

        if (len(errs) != 0 or len(err_pkgs) != 0 or error_module_specs) and self.base.conf.strict:

            raise dnf.exceptions.PackagesNotAvailableError(_("Unable to find a match"),

                                                           pkg_spec=' '.join(errs),

                                                           packages=err_pkgs)

    def _get_nevra_forms_from_command(self):

        if self.opts.command in self.nevra_forms:

            return [self.nevra_forms[self.opts.command]]

        else:

            return []

    def _log_not_valid_rpm_file_paths(self, grp_specs):

        group_names = map(lambda g: '@' + g, grp_specs)

        for pkg in chain(self.opts.pkg_specs, group_names):

            msg = _('Not a valid rpm file path: %s')

            logger.info(msg, self.base.output.term.bold(pkg))

    def _inform_not_a_valid_combination(self, forms):

        for form in forms:

            msg = _('Not a valid form: %s')

            logger.warning(msg, self.base.output.term.bold(form))

    def _install_files(self):

        err_pkgs = []

        strict = self.base.conf.strict

        for pkg in self.base.add_remote_rpms(self.opts.filenames, strict=strict,

                                             progress=self.base.output.progress):

            try:

                self.base.package_install(pkg, strict=strict)

            except dnf.exceptions.MarkingError:

                msg = _('No match for argument: %s')

                logger.info(msg, self.base.output.term.bold(pkg.location))

                err_pkgs.append(pkg)

        return err_pkgs

    def _install_groups(self, grp_specs):

        try:

            self.base.env_group_install(grp_specs,

                                        tuple(self.base.conf.group_package_types),

                                        strict=self.base.conf.strict)

        except dnf.exceptions.Error:

            if self.base.conf.strict:

                raise

    def _report_alternatives(self, pkg_spec):

        query = self.base.sack.query().filterm(

            provides=self.alternatives_provide.format(pkg_spec))

        if query:

            msg = _('There are following alternatives for "{0}": {1}')

            logger.info(msg.format(

                pkg_spec,

                ', '.join(sorted(set([alt.name for alt in query])))))

    def _install_packages(self, nevra_forms):

        errs = []

        strict = self.base.conf.strict

        for pkg_spec in self.opts.pkg_specs:

            try:

                self.base.install(pkg_spec, strict=strict, forms=nevra_forms)

            except dnf.exceptions.MarkingError as e:

                msg = '{}: {}'.format(e.value, self.base.output.term.bold(pkg_spec))

                logger.info(msg)

                self.base._report_icase_hint(pkg_spec)

                self._report_alternatives(pkg_spec)

                errs.append(pkg_spec)

        return errs