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# -*- coding: utf-8 -*-

# Copyright © Cloud Linux GmbH & Cloud Linux Software, Inc 2010-2019 All Rights Reserved
#
# Licensed under CLOUD LINUX LICENSE AGREEMENT
# http://cloudlinux.com/docs/LICENSE.TXT

from __future__ import print_function
from __future__ import absolute_import
from __future__ import division
import getopt
import glob
import os
import shutil
import sys
import traceback
from future.utils import iteritems
from . import clpassenger
from . import clselectctl
from . import utils
from .clselectprint import clprint
from .clselectexcept import ClSelectExcept, BaseClSelectException
from .clselectruby import environments, extensions, interpreters
from clcommon.cpapi import userdomains, docroot, CP_NAME
from clcommon.cpapi.cpapiexceptions import NoDomain, NotSupported


INTERPRETER = 'ruby'


def usage():
    print(' -v | --version VERSION              : Specify alternative version')
    print(' -u | --user USERNAME                : Username')
    print('      --domain DOMAIN                : Domain (or subdomain); users main domain as default')
    print(' -l | --list                         : List alternatives for interpreter')
    print(' -G | --list-extensions              : List global set of packages')
    print(' -K | --list-extensions-version      : List version set of packages')
    print(' -s | --user-summary                 : List user summary of webapps')
    print(' -y | --create-webapp                : Create user webapp')
    print(' -n | --destroy-webapp               : Destroy user webapp')
    print(' -f | --relocate-webapp              : Change webapp directory (files must be moved manually)')
    print(' -F | --transit-webapp               : Change webapp domain/alias')
    print(' -Z | --restart-webapp               : Restart webapp')
    print(' -c | --user-current                 : Show currently selected alternative for user webapp')
    print(' -b | --set-user-current             : Set alternative as user webapp default')
    print(' -e | --enable-user-extensions GEMS  : Install comma-separated list of gems for user webapp')
    print(' -d | --disable-user-extensions GEMS : Uninstall comma-separated list of gems for user webapp')
    print("                                     : Use '-' (minus) for all gems")
    print(' -r | --replace-user-extensions GEMS : Update comma-separated list of gems for user webapp')
    print("                                     : Use '-' (minus) for all gems")
    print(' -g | --list-user-extensions         : List installed gems for user webapp')
    print(' -p | --print-summary                : If specified along with setting an alternative prints user summary')
    print(' -j | --json                         : Print data as JSON')


def _create_environment(user, directory, version, env_name=None):
    prefix = _get_prefix(user, directory)
    if not env_name:
        env_name = version
    environment = environments.Environment(env_name, user, prefix)
    if not environment.exists():
        try:
            interpreter = interpreters.interpreters(key='version')[version]
        except KeyError:
            raise ClSelectExcept.NoSuchAlternativeVersion(version)
        environment.create(interpreter)
    return environment


def _get_environment(user, directory, app_summary=None):
    prefix = _get_prefix(user, directory)
    if app_summary is None:
        user_summary = clpassenger.summary(user)
        app_summary = user_summary.get(directory)
        if not app_summary:
            raise ClSelectExcept.NoSuchApplication('No such application (or application not configured) "%s"' % directory)
    binary = app_summary['binary']
    env_name = os.path.basename(os.path.dirname(os.path.dirname(binary)))
    environment = environments.Environment(env_name, user, prefix)
    return environment


def _get_prefix(user, directory):
    _, rel_dir = utils.get_abs_rel(user, directory)
    return os.path.join(environments.DEFAULT_PREFIX,
                        clselectctl.get_prefix(rel_dir))


def create(user, directory, alias, version=None, env_name=None, doc_root=None):
    if version is None:
        raise ClSelectExcept.WrongData('Not passed version as argument')
    user = clselectctl.get_user(user)
    clselectctl.check_directory(directory)
    alias = clselectctl.get_alias(alias)

    environment = _create_environment(user, directory, version, env_name)
    binary = environment.interpreter().binary

    clpassenger.configure(user, directory, alias, INTERPRETER, binary, doc_root=doc_root)
    clpassenger.restart(user, directory)


def current(user, directory, version=None, env_name=None):
    user = clselectctl.get_user(user)
    old_environment = _get_environment(user, directory)

    if not version:
        return {old_environment.name: old_environment.interpreter().as_dict()}

    old_extensions = set(old_environment.extensions())

    new_environment = _create_environment(user, directory, version, env_name)
    new_extensions = set(new_environment.extensions())

    for extension in new_extensions - old_extensions:
        try:
            new_environment.extension_uninstall(extension)
        except ClSelectExcept.ExternalProgramFailed:
            pass

    for extension in old_extensions - new_extensions:
        try:
            new_environment.extension_install(extension)
        except ClSelectExcept.ExternalProgramFailed:
            pass

    app_summary = clpassenger.summary(user)[directory]
    alias = app_summary['alias']
    doc_root = app_summary['docroot']
    htaccess_path = app_summary['htaccess']
    binary = new_environment.interpreter().binary

    clpassenger._unconfigure(htaccess=htaccess_path)
    clpassenger.configure(user, directory, alias, INTERPRETER, binary, doc_root=doc_root)
    clpassenger.restart(user, directory)


def destroy(user, directory):
    user = clselectctl.get_user(user)
    prefix = _get_environment(user, directory).prefix
    abs_dir, _ = utils.get_abs_rel(user, prefix)

    try:
        shutil.rmtree(abs_dir)
    except OSError:
        pass

    clpassenger.unconfigure(user, directory)
    try:
        clpassenger.restart(user, directory)
    except ClSelectExcept.MissingApprootDirectory:
        pass


def install(user, directory, extension):
    user = clselectctl.get_user(user)
    environment = _get_environment(user, directory)
    environment.extension_install(extension)


def list_extensions(user, directory):
    user = clselectctl.get_user(user)
    environment = _get_environment(user, directory)
    return environment.extensions()


def relocate(user, old_directory, new_directory, fmt):
    if '/' in new_directory:
        raise ClSelectExcept.WrongData('You cannot move appication to subdir')
    user = clselectctl.get_user(user)
    clselectctl.check_directory(new_directory)
    old_abs, old_rel = utils.get_abs_rel(user, old_directory)
    new_abs, new_rel = utils.get_abs_rel(user, new_directory)

    old_user_summary = clpassenger.summary(user)
    if new_directory in old_user_summary:
        raise ClSelectExcept.WebAppError("Specified directory already used by '%s'" % new_abs)
    if old_directory not in old_user_summary:
        raise ClSelectExcept.WrongData("No such application (or application not configured) \"%s\"" % old_directory)
    htaccess_path = old_user_summary[old_directory]['htaccess']
    doc_root = old_user_summary[old_directory]['docroot']
    alias = old_user_summary[old_directory]['alias']

    env_name = _get_environment(user, old_directory).name

    old_prefix = clselectctl.get_prefix(old_rel)
    new_prefix = clselectctl.get_prefix(new_rel)

    _old_envs, _ = utils.get_abs_rel(user, os.path.join(
        environments.DEFAULT_PREFIX, old_prefix))
    old_envs = os.path.join(_old_envs, '')

    _new_envs, _ = utils.get_abs_rel(user, os.path.join(
        environments.DEFAULT_PREFIX, new_prefix))
    new_envs = os.path.join(_new_envs, '')

    old_prompt = '(' + old_rel + ':'
    new_prompt = '(' + new_rel + ':'

    shutil.move(old_envs, new_envs)

    for activate in glob.glob(os.path.join(new_envs, '*', 'bin', '*')):
        old_activate = utils.file_read(activate)
        if old_prompt in old_activate:
            new_activate = old_activate.replace(old_prompt, new_prompt)
            utils.file_write(activate, new_activate, 'w')

    if not os.path.exists(new_abs):
        os.rename(old_abs, new_abs)

    prefix = _get_prefix(user, new_directory)
    environment = environments.Environment(env_name, user, prefix)
    binary = environment.interpreter().binary

    clpassenger._unconfigure(htaccess=htaccess_path)
    clpassenger.configure(user, new_directory, alias, INTERPRETER, binary, doc_root=doc_root)
    clpassenger.restart(user, new_directory)


def restart(user, directory):
    user = clselectctl.get_user(user)
    apps_summary = clpassenger.summary(user)
    if directory not in apps_summary:
        raise ClSelectExcept.WrongData("No such application (or application not configured) \"%s\"" % directory)
    clpassenger.restart(user, directory)


def summary(user):
    user = clselectctl.get_user(user)

    summ = {}
    for directory, data in iteritems(clpassenger.summary(user)):
        if data['interpreter'] != INTERPRETER:
            continue

        environment = _get_environment(user, directory, data).as_deepdict()
        summ[directory] = {
            'domain': data['domain'],
            'alias': data['alias'],
            'environment': environment['name'],
            'interpreter': environment['interpreter'],
            'extensions': environment['extensions'],
        }
        # add only list with additions domains
        if "domains" in data and len(data["domains"]) > 1:
            summ[directory]["domains"] = data["domains"]

    return summ


def transit(user, directory, alias, doc_root=None):
    user = clselectctl.get_user(user)
    apps_summary = clpassenger.summary(user)
    if directory not in apps_summary:
        raise ClSelectExcept.WrongData("No such application (or application not configured) \"%s\"" % directory)
    old_app_summary = apps_summary[directory]
    old_alias = old_app_summary['alias']
    old_doc_root = old_app_summary['docroot']
    new_alias = clselectctl.get_alias(alias)

    environment = _get_environment(user, directory)
    binary = environment.interpreter().binary

    clpassenger.configure(user, directory, new_alias, INTERPRETER, binary, True, 'transit', doc_root=doc_root)
    clpassenger.move(user, directory, old_alias, new_alias, old_doc_root=old_doc_root, new_doc_root=doc_root)
    clpassenger.restart(user, directory)


def uninstall(user, directory, extension):
    user = clselectctl.get_user(user)
    environment = _get_environment(user, directory)
    environment.extension_uninstall(extension)


def update(user, directory, extension):
    user = clselectctl.get_user(user)
    environment = _get_environment(user, directory)
    environment.extension_update(extension)


def main():
    try:
        opts, args = getopt.getopt(
            sys.argv[1:],
            'hi:v:u:lGsynfFZcbe:d:r:gpjK:', [
                'help',
                'interpreter=',
                'version=',
                'user=',
                'domain=',
                'list',
                'list-extensions',
                'user-summary',
                'create-webapp',
                'destroy-webapp',
                'relocate-webapp',
                'transit-webapp',
                'restart-webapp',
                'user-current',
                'set-user-current',
                'enable-user-extensions=',
                'disable-user-extensions=',
                'replace-user-extensions=',
                'list-user-extensions',
                'print-summary',
                'json',
                'list-extensions-version='
                ])
    except getopt.GetoptError as err:
        sys.stderr.write(str(err))
        usage()
        sys.exit(1)

    ext_list = ''
    fmt = 'text'
    print_summary = False
    user = None
    domain = None
    action = ''
    version = None
    if not opts:
        usage()
        sys.exit(1)

    for o, a in opts:
        if o in ('-i', '--interpreter'):
            pass
        elif o in ('-l', '--list'):
            action = 'list'
        elif o in ('-y', '--create-webapp'):
            action = 'create-webapp'
        elif o in ('-n', '--destroy-webapp'):
            action = 'destroy-webapp'
        elif o in ('-f', '--relocate-webapp'):
            action = 'relocate-webapp'
        elif o in ('-F', '--transit-webapp'):
            action = 'transit-webapp'
        elif o in ('-Z', '--restart-webapp'):
            action = 'restart-webapp'
        elif o in ('-c', '--user-current'):
            action = 'user-current'
        elif o in ('-b', '--set-user-current'):
            action = 'set-user-current'
        elif o in ('-g', '--list-user-extensions'):
            action = 'list-user-extensions'
        elif o in ('-e', '--enable-user-extensions'):
            action = 'enable-user-extensions'
            ext_list = a
        elif o in ('-s', '--user-summary'):
            action = 'user-summary'
        elif o in ('-j', '--json'):
            fmt = 'json'
        elif o in ('-r', '--replace-user-extensions'):
            action = 'replace-user-extensions'
            ext_list = a
        elif o in ('-d', '--disable-user-extensions'):
            action = 'disable-user-extensions'
            ext_list = a
        elif o in ('-v', '--version'):
            version = a
        elif o in ('-G', '--list-extensions'):
            action = 'list-extensions'
        elif o in ('-u', '--user'):
            user = a
        elif o == '--domain':
            domain = a
        elif o in ('-p', '--print-summary'):
            print_summary = True
        elif o in ('-K', '--list-extensions-version'):
            action = 'list-extensions-version'
            ext_list = a
        else:
            sys.stderr.write('unhandled option')
            sys.exit(1)

    if action == '':
        sys.stderr.write('ERROR:you must provide option for interpreter ruby')
        sys.exit(1)

    if action in ('create-webapp', 'destroy-webapp', 'relocate-webapp',
                  'transit-webapp', 'restart-webapp',
                  'enable-user-extensions', 'list-user-extensions',
                  'replace-user-extensions', 'disable-user-extensions',
                  ):
        if not args:
            sys.stderr.write('webapp must be specified')
            sys.exit(3)

    if domain:
        try:
            doc_root, user_ = docroot(domain)
        except NoDomain:
            clprint.print_diag(fmt, {'status': 'ERROR', 'message': 'No such domain: "%s"' % domain})
            sys.exit(1)
        except NotSupported:
            clprint.print_diag(fmt, {'status': 'ERROR', 'message': 'Ruby selector not supported for %s' % CP_NAME})
            sys.exit(1)

        if not user:  # we can obtain user name for domain
            user = user_
        elif user != user_:
            clprint.print_diag(fmt, {'status': 'ERROR', 'message': 'domain %s is not owned by the user %s' % (domain, user)})
            sys.exit(1)
    elif user and not domain:
        try:
            domain_list = userdomains(user)
        except NotSupported:
            clprint.print_diag(fmt, {'status': 'ERROR', 'message': 'Ruby selector not supported for %s' % CP_NAME})
            sys.exit(1)

        _, doc_root = domain_list[0]  # get document root for main domain

    if ext_list == '-':
        if action == 'enable-user-extensions':
            sys.stderr.write('installlation of all extensions is not possible')
            sys.exit(4)
    elif ext_list:
        _exts = [_f for _f in ext_list.split(',') if _f]

    try:
        error = 0
        ok = 0
        result = {}
        if action == 'list-extensions':
            result = extensions.ExtensionInfo().list_extensions_cached()
        elif action == 'list-extensions-version':
            result = extensions.ExtensionInfo().list_extensions_version(_exts)
            ext_list = ''
        elif action == 'list':
            result = interpreters.interpreters_dict('version')
        elif action == 'user-summary':
            result = summary(user)
        elif action == 'create-webapp':
            create(user, args[0], args[1], version, doc_root=doc_root)
        elif action == 'destroy-webapp':
            destroy(user, args[0])
        elif action == 'relocate-webapp':
            relocate(user, args[0], args[1], fmt)
        elif action == 'transit-webapp':
            new_doc_root = None
            if domain:  # remove app to new domain if domain present
                new_doc_root = doc_root
            transit(user, args[0], args[1], doc_root=new_doc_root)
        elif action == 'restart-webapp':
            restart(user, args[0])
        elif action == 'user-current':
            result = current(user, args[0])
        elif action == 'set-user-current':
            current(user, args[0], version)
        elif action == 'list-user-extensions':
            result = list_extensions(user, args[0])
        else:
            alias = args[0]
            if ext_list == '-':
                _exts = list_extensions(user, alias)

            for extension in _exts:
                try:
                    if action == 'enable-user-extensions':
                        install(user, alias, extension)
                    elif action == 'disable-user-extensions':
                        uninstall(user, alias, extension)
                    elif action == 'replace-user-extensions':
                        update(user, alias, extension)
                    result.update({extension: {'status': 'OK'}})
                    ok += 1
                except (ValueError, ClSelectExcept.ExternalProgramFailed) as err:
                    result.update(
                        {extension: {'status': 'ERROR', 'message': str(err)}})
                    error += 1
    except BaseClSelectException as err:
        clprint.print_diag(fmt, {'status': 'ERROR', 'message': str(err)})
        sys.exit(1)
    except Exception as err:
        msg = traceback.format_exc()
        clprint.print_diag(fmt, {'status': 'ERROR', 'message': msg})
        sys.exit(1)

    if not result and print_summary:
        result = summary(user)

    if error and ok:
        status = 'PARTIAL'
        exit_status = 2
    elif error:
        status = 'ERROR'
        exit_status = 5
    else:
        if ext_list and ok < 2:
            if print_summary:
                clprint.print_data(fmt, summary(user))
            else:
                clprint.print_data(fmt, {})
        else:
            clprint.print_data(fmt, result)
        sys.exit(0)
    message = '\n'.join(
        '%s: %s' % (k, v.get('message', v.get('status', '')))
        for k, v in iteritems(result))
    clprint.print_diag(fmt, {'status': status, 'message': message})
    sys.exit(exit_status)