sgallagh / centos / centpkg

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'''
    Command line behavior for centpkg
'''
#
# Author(s):
#            Jesse Keating <jkeating@redhat.com>
#            Pat Riehecky <riehecky@fnal.gov>
#            Brian Stinson <bstinson@ksu.edu>
#
# This program is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the
# Free Software Foundation; either version 2 of the License, or (at your
# option) any later version.  See http://www.gnu.org/copyleft/gpl.html for
# the full text of the license.

from __future__ import print_function

import argparse
import textwrap

from centpkg.utils import config_get_safely, do_add_remote, do_fork
import centpkg.utils
from pyrpkg.cli import cliClient
from pyrpkg import rpkgError
from urllib.parse import urlparse
from configparser import ConfigParser

import gitlab
import json
import os
import sys

_DEFAULT_API_BASE_URL = 'https://gitlab.com'
_DEFAULT_PARENT_NAMESPACE = {
    'centpkg': 'redhat/centos-stream',
    'centpkg-sig': 'CentOS',
}


class centpkgClient(cliClient):
    def __init__(self, config, name='centpkg'):
        self.DEFAULT_CLI_NAME = name

        # Save the config for utilities such as get_repo_name()
        centpkg.utils.dist_git_config = config
        centpkg.utils.dist_git_config.add_section('__default')
        centpkg.utils.dist_git_config.set('__default', 'cli_name', name)

        super(centpkgClient, self).__init__(config, name)

        self.setup_centos_subparsers()

    def setup_centos_subparsers(self):
        self.register_do_fork()
        self.register_request_gated_side_tag()
        self.register_current_state()

    def register_do_fork(self):
        help_msg = 'Create a new fork of the current repository'
        distgit_section = '{0}.distgit'.format(self.name)
        # uses default dist-git url in case section is not present
        try:
            distgit_api_base_url = config_get_safely(self.config, distgit_section, "apibaseurl")
        except rpkgError:
            distgit_api_base_url = _DEFAULT_API_BASE_URL
        description = textwrap.dedent('''
            Create a new fork of the current repository

            Before the operation, you need to generate an API token at
            https://{1}/-/user_settings/personal_access_tokens, select the "api"
            scope and save it in your local user configuration located
            at ~/.config/rpkg/{0}.conf. For example:

                [{0}.distgit]
                token = <api_key_here>

            Below is a basic example of the command to fork a current repository:

                {0} fork
        '''.format(self.name, urlparse(distgit_api_base_url).netloc))

        fork_parser = self.subparsers.add_parser(
            'fork',
            formatter_class=argparse.RawDescriptionHelpFormatter,
            help=help_msg,
            description=description)
        fork_parser.set_defaults(command=self.do_distgit_fork)

    def do_distgit_fork(self):
        """create fork of the distgit repository
        That includes creating fork itself using API call and then adding
        remote tracked repository
        """
        distgit_section = '{0}.distgit'.format(self.name)
        distgit_api_base_url = config_get_safely(self.config, distgit_section, "apibaseurl")
        distgit_token = config_get_safely(self.config, distgit_section, 'token')

        ret, repo_path = do_fork(
            logger=self.log,
            base_url=distgit_api_base_url,
            token=distgit_token,
            repo_name=self.cmd.repo_name,
            namespace=self.cmd.ns,
            cli_name=self.name,
        )

        # assemble url of the repo in web browser
        fork_url = '{0}/{1}'.format(
            distgit_api_base_url.rstrip('/'),
            repo_path,
        )

        if ret:
            msg = "Fork of the repository has been created: '{0}'"
        else:
            msg = "Repo '{0}' already exists."
        self.log.info(msg.format(fork_url))

        distgit_remote_base_url = self.config.get(
            '{0}'.format(self.name),
            "gitbaseurl",
            vars={'repo': '{0}/{1}'.format(self.cmd.ns, self.cmd.repo_name)},
        )
        remote_name = repo_path.split('/')[0]

        ret = do_add_remote(
            base_url=distgit_api_base_url,
            remote_base_url=distgit_remote_base_url,
            repo=self.cmd.repo,
            repo_path=repo_path,
            remote_name=remote_name,
        )
        if ret:
            msg = "Adding as remote '{0}'."
        else:
            msg = "Remote with name '{0}' already exists."
        self.log.info(msg.format(remote_name))

    def register_current_state(self):
        """Register command line parser for subcommand current-state"""
        parser = self.subparsers.add_parser(
            "current-state",
            help="Show the phase and state of current dist-git branch - Internal Only",
        )
        parser.set_defaults(command=self.request_current_state)

    # FIXME: This is alot of duplication.
    #        Get it working now.  De-duplicate later
    def request_current_state(self):
        # Only run if we have internal configuraions, or scratch
        internal_config_file = "/etc/rpkg/centpkg_internal.conf"
        if os.path.exists(internal_config_file):
            # Get our internal only variables
            cfg = ConfigParser()
            cfg.read(internal_config_file)
            pp_api_url = config_get_safely(cfg, "centpkg.internal", 'pp_api_url')
            gitbz_query_url = config_get_safely(cfg, "centpkg.internal", 'gitbz_query_url')
            rhel_dist_git = config_get_safely(cfg, "centpkg.internal", 'rhel_dist_git')

            # Find out divergent branch and stabalization
            self.log.info("Checking current state:")
            stream_version = self.cmd.target.split('-')[0]
            rhel_version = centpkg.utils.stream_mapping(stream_version)
            try:
                x_version, active_y, is_beta, in_stabilization = centpkg.utils.determine_active_y_version(rhel_version, pp_api_url)
            except AssertionError as e:
                self.log.error("  Error: centpkg cannot determine the development phase.")
                self.log.error("         Please file an issue at https://git.centos.org/centos/centpkg")
                self.log.error("  Workaround: Use the --rhel-target option")
                self.log.error("Exiting")
                raise SystemExit(1)
            if is_beta:
                # Special case: for X.0 betas, there will never be a prior branch
                # In this case, always work on the active branch.
                divergent_branch = True
            else:
                divergent_branch = centpkg.utils.does_divergent_branch_exist(
                                        self.cmd.repo_name,
                                        x_version,
                                        active_y,
                                        rhel_dist_git,
                                        "rpms")
            # Good to know
            if in_stabilization :
                self.log.info("    we are in stabilization mode.")
            else:
                self.log.info("    we are not in stabilization mode.")
            if divergent_branch and not is_beta:
                self.log.info("    a divergent branch was found.")
            elif divergent_branch and is_beta:
                self.log.info("    we are working on a beta release.")
            else:
                self.log.info("    a divergent branch was not found.")
        else:
            self.log.error("NO INTERNAL CONFIGURATION")
            self.log.error("Hint: If you are internal, install the rhel-packager package from https://download.devel.redhat.com/rel-eng/RCMTOOLS/latest-RCMTOOLS-2-RHEL-9/compose/BaseOS/x86_64/os/Packages/")
            self.log.error("Exiting")
            raise SystemExit(1)

    # Overloaded build
    def register_build(self):
        # Do all the work from the super class
        super(centpkgClient, self).register_build()
        build_parser = self.subparsers.choices['build']
        build_parser.formatter_class = argparse.RawDescriptionHelpFormatter
        build_parser.description = textwrap.dedent('''
            {0}

            centpkg now sets the rhel metadata with --rhel-target.
             * exception - This will build for the current in-development Y-stream release.
               It is equivalent to passing latest when not in the Blocker and Exception Phase.
             * zstream - If pre-GA of a y-stream release, this will build for 0day.
               If post-GA of a Y-stream release, this will build for the Z-stream of that release.
             * latest - This will always build for the next Y-stream release
             * none - This will not build in brew.  No rhel metadata is set.

        '''.format('\n'.join(textwrap.wrap(build_parser.description))))

        # Now add our additional option
        build_parser.add_argument(
            '--rhel-target',
            choices=['exception', 'zstream', 'latest', 'none'],
            help='Set the rhel-target metadata')

    # Overloaded _build
    def _build(self, sets=None):

        # Only do rhel-target if we are centpkg, not centpkg-sig, or if we are doing scratch
        if not os.path.basename(sys.argv[0]).endswith('-sig') and not self.args.scratch:

            # Only run if we have internal configuraions
            internal_config_file = "/etc/rpkg/centpkg_internal.conf"
            if os.path.exists(internal_config_file):

                # If rhel-target is set, no need to check, just use it
                if hasattr(self.args, 'rhel_target') and self.args.rhel_target:
                    # If rhel-target set to none, do nothing with metadata
                    if self.args.rhel_target.lower() != "none":
                        # If custom-user-metadata set, add onto it
                        if hasattr(self.args, 'custom_user_metadata') and self.args.custom_user_metadata:
                            try:
                                temp_custom_user_metadata = json.loads(self.args.custom_user_metadata)
                            # Use ValueError instead of json.JSONDecodeError for Python 2 and 3 compatibility
                            except ValueError as e:
                                self.parser.error("--custom-user-metadata is not valid JSON: %s" % e)
                            if not isinstance(temp_custom_user_metadata, dict):
                                self.parser.error("--custom-user-metadata must be a JSON object")
                            temp_custom_user_metadata["rhel-target"] = self.args.rhel_target
                        else:
                            temp_custom_user_metadata = {"rhel-target": self.args.rhel_target}
                        self.args.custom_user_metadata = json.dumps(temp_custom_user_metadata)

                else:
                    # Get our internal only variables
                    cfg = ConfigParser()
                    cfg.read(internal_config_file)
                    pp_api_url = config_get_safely(cfg, "centpkg.internal", 'pp_api_url')
                    gitbz_query_url = config_get_safely(cfg, "centpkg.internal", 'gitbz_query_url')
                    rhel_dist_git = config_get_safely(cfg, "centpkg.internal", 'rhel_dist_git')

                    # Find out divergent branch and stabalization
                    self.log.info("Checking rhel-target information:")
                    stream_version = self.cmd.target.split('-')[0]
                    rhel_version = centpkg.utils.stream_mapping(stream_version)

                    try:
                        x_version, active_y, is_beta, in_stabilization = centpkg.utils.determine_active_y_version(rhel_version, pp_api_url)
                    except AssertionError as e:
                        self.log.error("  Error: centpkg cannot determine the development phase.")
                        self.log.error("         Please file an issue at https://git.centos.org/centos/centpkg")
                        self.log.error("  Workaround: Use the --rhel-target option")
                        self.log.error("Exiting")
                        raise SystemExit(1)

                    if is_beta:
                        # Special case: for X.0 betas, there will never be a prior branch
                        # In this case, always work on the active branch.
                        divergent_branch = True
                    else:
                        divergent_branch = centpkg.utils.does_divergent_branch_exist(
                                                self.cmd.repo_name,
                                                x_version,
                                                active_y,
                                                rhel_dist_git,
                                                "rpms")

                    # Good to know
                    if divergent_branch and not is_beta:
                        self.log.info("    a divergent branch was found.")
                    elif divergent_branch and is_beta:
                        self.log.info("    we are working on a beta release.")
                    else:
                        self.log.info("    a divergent branch was not found.")
                    if in_stabilization :
                        self.log.info("    we are in stabilization mode.")
                    else:
                        self.log.info("    we are not in stabilization mode.")

                    # Update args.custom_user_metadata
                    if hasattr(self.args, 'custom_user_metadata') and self.args.custom_user_metadata:
                        try:
                            temp_custom_user_metadata = json.loads(self.args.custom_user_metadata)
                        # Use ValueError instead of json.JSONDecodeError for Python 2 and 3 compatibility
                        except ValueError as e:
                            self.parser.error("--custom-user-metadata is not valid JSON: %s" % e)
                        if not isinstance(temp_custom_user_metadata, dict):
                            self.parser.error("--custom-user-metadata must be a JSON object")
                        if divergent_branch:
                            temp_custom_user_metadata["rhel-target"] = "latest"
                        elif not divergent_branch and not in_stabilization :
                            temp_custom_user_metadata["rhel-target"] = "zstream"
                        else:
                            self.log.error("We are currently in Stabalization mode")
                            self.log.error("You must either set the rhel-target (--rhel-target)")
                            self.log.error("or branch for the previous version.")
                            self.log.error("Exiting")
                            raise SystemExit(1)
                        self.args.custom_user_metadata = json.dumps(temp_custom_user_metadata)
                    else:
                        if divergent_branch:
                            self.args.custom_user_metadata = '{"rhel-target": "latest"}'
                        elif not divergent_branch and not in_stabilization :
                            self.args.custom_user_metadata = '{"rhel-target": "zstream"}'
                        else:
                            self.log.error("We are currently in Stabalization mode")
                            self.log.error("You must either set the rhel-target (--rhel-target)")
                            self.log.error("or branch for the previous version.")
                            self.log.error("Exiting")
                            raise SystemExit(1)

                    # Good to know
                    self.log.info("    rhel-target: " + json.loads(self.args.custom_user_metadata)['rhel-target'])

            else:
                self.log.error("NO INTERNAL CONFIGURATION")
                self.log.error("Only scratch builds are allowed without internal configurations")
                self.log.error("Hint: Install the rhel-packager package from https://download.devel.redhat.com/rel-eng/RCMTOOLS/latest-RCMTOOLS-2-RHEL-9/compose/BaseOS/x86_64/os/Packages/ if you want to build the package via internal (Red Hat) configuration.")
                self.log.error("Exiting")
                raise SystemExit(1)

        # Proceed with build
        return super(centpkgClient, self)._build(sets)


    def register_request_gated_side_tag(self):
        """Register command line parser for subcommand request-gated-side-tag"""
        parser = self.subparsers.add_parser(
            "request-gated-side-tag",
            help="Create a new dynamic gated side tag",
        )
        parser.add_argument("--base-tag", help="name of base tag")
        parser.set_defaults(command=self.request_gated_side_tag)

    def request_gated_side_tag(self):
        self.args.suffix = "stack-gate"
        super(centpkgClient, self).request_side_tag()

    def clone(self):
        # Since gitlab allows git repos to be checked out with incorrect capitilization
        #   we need to check the spelling when cloning
        gl = gitlab.Gitlab(_DEFAULT_API_BASE_URL)
        parent_namespace = _DEFAULT_PARENT_NAMESPACE[self.DEFAULT_CLI_NAME]

        if "/" in self.args.repo[0]:
            project_name_with_namespace = parent_namespace+"/"+self.args.repo[0]
            short_name=self.args.repo[0].split("/")[-1]
        else:
            project_name_with_namespace = parent_namespace+"/rpms/"+self.args.repo[0]
            short_name=self.args.repo[0]
        try:
            project = gl.projects.get(project_name_with_namespace)
        except gitlab.exceptions.GitlabGetError as e:
            self.log.error("There is no repository with the given name. Did you spell it correctly?")
            self.log.error("Fatal: ")
            self.log.error(e)
            raise SystemExit(1)
        if not project.name == short_name:
            self.log.error("Fatal: ")
            self.log.error("Project name is wrong: " + short_name + " it should be: " + project.name)
            raise SystemExit(1)
        super(centpkgClient, self).clone()