# -*- coding: utf-8 -*- #
# Copyright 2021 Google LLC. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#    http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Command for creating organization firewall policy rules."""

from googlecloudsdk.api_lib.compute import base_classes
from googlecloudsdk.api_lib.compute import firewall_policy_rule_utils as rule_utils
from googlecloudsdk.api_lib.compute.firewall_policies import client
from googlecloudsdk.calliope import base
from googlecloudsdk.calliope import exceptions
from googlecloudsdk.command_lib.compute.firewall_policies import firewall_policies_utils
from googlecloudsdk.command_lib.compute.firewall_policies import flags
from googlecloudsdk.command_lib.compute.network_firewall_policies import secure_tags_utils
import six


@base.UniverseCompatible
class Create(base.CreateCommand):
  r"""Creates a Compute Engine firewall policy rule.

  *{command}* is used to create organization firewall policy rules.
  """

  FIREWALL_POLICY_ARG = None

  @classmethod
  def Args(cls, parser):
    support_network_scopes = True
    cls.FIREWALL_POLICY_ARG = flags.FirewallPolicyRuleArgument(
        required=True, operation='create'
    )
    cls.FIREWALL_POLICY_ARG.AddArgument(parser, operation_type='create')
    flags.AddAction(parser)
    flags.AddFirewallPolicyId(parser, operation='inserted')
    flags.AddSrcIpRanges(parser)
    flags.AddDestIpRanges(parser)
    flags.AddLayer4Configs(parser, required=True)
    flags.AddDirection(parser)
    flags.AddEnableLogging(parser)
    flags.AddDisabled(parser)
    flags.AddTargetResources(parser)
    flags.AddTargetServiceAccounts(parser)
    flags.AddSrcSecureTags(parser)
    flags.AddTargetSecureTags(parser)
    flags.AddSrcThreatIntelligence(parser, support_network_scopes)
    flags.AddDestThreatIntelligence(parser, support_network_scopes)
    flags.AddSrcRegionCodes(parser, support_network_scopes)
    flags.AddDestRegionCodes(parser, support_network_scopes)
    flags.AddSrcFqdns(parser)
    flags.AddDestFqdns(parser)
    flags.AddSrcAddressGroups(parser)
    flags.AddDestAddressGroups(parser)
    flags.AddSecurityProfileGroup(parser)
    flags.AddTlsInspect(parser)
    flags.AddDescription(parser)
    flags.AddOrganization(parser, required=False)
    if (
        cls.ReleaseTrack() == base.ReleaseTrack.ALPHA
        or cls.ReleaseTrack() == base.ReleaseTrack.BETA
    ):
      flags.AddSrcNetworkScope(parser)
      flags.AddDestNetworkScope(parser)
      flags.AddSrcNetworkType(parser)
      flags.AddDestNetworkType(parser)

    flags.AddSrcNetworkContext(parser)
    flags.AddDestNetworkContext(parser)
    flags.AddSrcNetworks(parser)

    parser.display_info.AddCacheUpdater(flags.FirewallPoliciesCompleter)

  def Run(self, args):
    holder = base_classes.ComputeApiHolder(self.ReleaseTrack())
    ref = self.FIREWALL_POLICY_ARG.ResolveAsResource(
        args, holder.resources, with_project=False
    )
    org_firewall_policy = client.OrgFirewallPolicy(
        ref=ref,
        compute_client=holder.client,
        resources=holder.resources,
        version=six.text_type(self.ReleaseTrack()).lower(),
    )
    firewall_policy_rule_client = client.OrgFirewallPolicyRule(
        ref=ref,
        compute_client=holder.client,
        resources=holder.resources,
        version=six.text_type(self.ReleaseTrack()).lower(),
    )
    src_ip_ranges = []
    dest_ip_ranges = []
    layer4_configs = []
    target_resources = []
    target_service_accounts = []
    src_secure_tags = []
    target_secure_tags = []
    src_address_groups = []
    dest_address_groups = []
    src_fqdns = []
    dest_fqdns = []
    src_region_codes = []
    dest_region_codes = []
    src_threat_intelligence = []
    dest_threat_intelligence = []
    security_profile_group = None
    tls_inspect = None
    enable_logging = False
    disabled = False
    src_network_scope = None
    src_networks = []
    dest_network_scope = None
    src_network_context = None
    dest_network_context = None

    if args.IsSpecified('src_ip_ranges'):
      src_ip_ranges = args.src_ip_ranges
    if args.IsSpecified('dest_ip_ranges'):
      dest_ip_ranges = args.dest_ip_ranges
    if args.IsSpecified('layer4_configs'):
      layer4_configs = args.layer4_configs
    if args.IsSpecified('target_resources'):
      target_resources = args.target_resources
    if args.IsSpecified('target_service_accounts'):
      target_service_accounts = args.target_service_accounts
    if args.IsSpecified('src_secure_tags'):
      src_secure_tags = secure_tags_utils.TranslateSecureTagsForFirewallPolicy(
          holder.client, args.src_secure_tags
      )
    if args.IsSpecified('target_secure_tags'):
      target_secure_tags = (
          secure_tags_utils.TranslateSecureTagsForFirewallPolicy(
              holder.client, args.target_secure_tags
          )
      )
    if args.IsSpecified('src_threat_intelligence'):
      src_threat_intelligence = args.src_threat_intelligence
    if args.IsSpecified('dest_threat_intelligence'):
      dest_threat_intelligence = args.dest_threat_intelligence
    if args.IsSpecified('src_region_codes'):
      src_region_codes = args.src_region_codes
    if args.IsSpecified('dest_region_codes'):
      dest_region_codes = args.dest_region_codes
    if args.IsSpecified('src_address_groups'):
      src_address_groups = [
          firewall_policies_utils.BuildAddressGroupUrl(
              x, args.organization, org_firewall_policy, args.firewall_policy
          )
          for x in args.src_address_groups
      ]
    if args.IsSpecified('dest_address_groups'):
      dest_address_groups = [
          firewall_policies_utils.BuildAddressGroupUrl(
              x, args.organization, org_firewall_policy, args.firewall_policy
          )
          for x in args.dest_address_groups
      ]
    if args.IsSpecified('src_fqdns'):
      src_fqdns = args.src_fqdns
    if args.IsSpecified('dest_fqdns'):
      dest_fqdns = args.dest_fqdns
    if args.IsSpecified('security_profile_group'):
      security_profile_group = (
          firewall_policies_utils.BuildSecurityProfileGroupUrl(
              security_profile_group=args.security_profile_group,
              optional_organization=args.organization,
              firewall_policy_client=org_firewall_policy,
              firewall_policy_id=args.firewall_policy,
          )
      )
    if args.IsSpecified('tls_inspect'):
      tls_inspect = args.tls_inspect

    if args.IsSpecified('enable_logging'):
      enable_logging = args.enable_logging
    if args.IsSpecified('disabled'):
      disabled = args.disabled
    if args.IsSpecified('src_networks'):
      src_networks = args.src_networks

    if (
        self.ReleaseTrack() == base.ReleaseTrack.ALPHA
        or self.ReleaseTrack() == base.ReleaseTrack.BETA
    ):
      if args.IsSpecified('src_network_scope') and args.IsSpecified(
          'src_network_type'
      ):
        raise exceptions.ToolException(
            'At most one of src_network_scope and src_network_type can be'
            ' specified.'
        )
      if args.IsSpecified('dest_network_scope') and args.IsSpecified(
          'dest_network_type'
      ):
        raise exceptions.ToolException(
            'At most one of dest_network_scope and dest_network_type can be'
            ' specified.'
        )

      if args.IsSpecified('src_network_scope'):
        if not args.src_network_scope:
          src_network_scope = (
              holder.client.messages.FirewallPolicyRuleMatcher.SrcNetworkScopeValueValuesEnum.UNSPECIFIED
          )
        else:
          src_network_scope = holder.client.messages.FirewallPolicyRuleMatcher.SrcNetworkScopeValueValuesEnum(
              args.src_network_scope
          )
      if args.IsSpecified('dest_network_scope'):
        if not args.dest_network_scope:
          dest_network_scope = (
              holder.client.messages.FirewallPolicyRuleMatcher.DestNetworkScopeValueValuesEnum.UNSPECIFIED
          )
        else:
          dest_network_scope = holder.client.messages.FirewallPolicyRuleMatcher.DestNetworkScopeValueValuesEnum(
              args.dest_network_scope
          )
      if args.IsSpecified('src_network_type'):
        # src_network_type and src_network_scope are mutually exclusive so only
        # one of them can be specified.
        if not args.src_network_type:
          src_network_scope = (
              holder.client.messages.FirewallPolicyRuleMatcher.SrcNetworkScopeValueValuesEnum.UNSPECIFIED
          )
        else:
          src_network_scope = holder.client.messages.FirewallPolicyRuleMatcher.SrcNetworkScopeValueValuesEnum(
              args.src_network_type
          )
      if args.IsSpecified('dest_network_type'):
        # dest_network_type and dest_network_scope are mutually exclusive so
        # only one of them can be specified.
        if not args.dest_network_type:
          dest_network_scope = (
              holder.client.messages.FirewallPolicyRuleMatcher.DestNetworkScopeValueValuesEnum.UNSPECIFIED
          )
        else:
          dest_network_scope = holder.client.messages.FirewallPolicyRuleMatcher.DestNetworkScopeValueValuesEnum(
              args.dest_network_type
          )

    if args.IsSpecified('src_network_context'):
      if not args.src_network_context:
        src_network_context = (
            holder.client.messages.FirewallPolicyRuleMatcher.SrcNetworkContextValueValuesEnum.UNSPECIFIED
        )
      else:
        src_network_context = holder.client.messages.FirewallPolicyRuleMatcher.SrcNetworkContextValueValuesEnum(
            args.src_network_context
        )
    if args.IsSpecified('dest_network_context'):
      if not args.dest_network_context:
        dest_network_context = (
            holder.client.messages.FirewallPolicyRuleMatcher.DestNetworkContextValueValuesEnum.UNSPECIFIED
        )
      else:
        dest_network_context = holder.client.messages.FirewallPolicyRuleMatcher.DestNetworkContextValueValuesEnum(
            args.dest_network_context
        )

    layer4_config_list = rule_utils.ParseLayer4Configs(
        layer4_configs, holder.client.messages
    )

    if (
        self.ReleaseTrack() == base.ReleaseTrack.ALPHA
        or self.ReleaseTrack() == base.ReleaseTrack.BETA
    ):
      matcher = holder.client.messages.FirewallPolicyRuleMatcher(
          srcIpRanges=src_ip_ranges,
          destIpRanges=dest_ip_ranges,
          layer4Configs=layer4_config_list,
          srcAddressGroups=src_address_groups,
          destAddressGroups=dest_address_groups,
          srcSecureTags=src_secure_tags,
          srcFqdns=src_fqdns,
          destFqdns=dest_fqdns,
          srcRegionCodes=src_region_codes,
          destRegionCodes=dest_region_codes,
          srcThreatIntelligences=src_threat_intelligence,
          destThreatIntelligences=dest_threat_intelligence,
          srcNetworkScope=src_network_scope,
          srcNetworks=src_networks,
          destNetworkScope=dest_network_scope,
      )
    else:
      matcher = holder.client.messages.FirewallPolicyRuleMatcher(
          srcIpRanges=src_ip_ranges,
          destIpRanges=dest_ip_ranges,
          layer4Configs=layer4_config_list,
          srcAddressGroups=src_address_groups,
          destAddressGroups=dest_address_groups,
          srcSecureTags=src_secure_tags,
          srcFqdns=src_fqdns,
          destFqdns=dest_fqdns,
          srcRegionCodes=src_region_codes,
          destRegionCodes=dest_region_codes,
          srcThreatIntelligences=src_threat_intelligence,
          destThreatIntelligences=dest_threat_intelligence,
      )
    traffic_direct = (
        holder.client.messages.FirewallPolicyRule.DirectionValueValuesEnum.INGRESS
    )
    if args.IsSpecified('direction'):
      if args.direction == 'INGRESS':
        traffic_direct = (
            holder.client.messages.FirewallPolicyRule.DirectionValueValuesEnum.INGRESS
        )
      else:
        traffic_direct = (
            holder.client.messages.FirewallPolicyRule.DirectionValueValuesEnum.EGRESS
        )

    matcher.srcNetworkContext = src_network_context
    matcher.destNetworkContext = dest_network_context
    matcher.srcNetworks = src_networks

    firewall_policy_rule = holder.client.messages.FirewallPolicyRule(
        priority=rule_utils.ConvertPriorityToInt(ref.Name()),
        action=args.action,
        match=matcher,
        direction=traffic_direct,
        targetResources=target_resources,
        targetServiceAccounts=target_service_accounts,
        targetSecureTags=target_secure_tags,
        securityProfileGroup=security_profile_group,
        tlsInspect=tls_inspect,
        description=args.description,
        enableLogging=enable_logging,
        disabled=disabled,
    )

    firewall_policy_id = firewall_policies_utils.GetFirewallPolicyId(
        firewall_policy_rule_client,
        args.firewall_policy,
        organization=args.organization,
    )
    return firewall_policy_rule_client.CreateRule(
        firewall_policy=firewall_policy_id,
        firewall_policy_rule=firewall_policy_rule,
    )


Create.detailed_help = {
    'EXAMPLES': """\
    To create a rule with priority ``10" in an organization firewall policy with ID
    ``123456789", run:

      $ {command} 10 --firewall-policy=123456789 --action=allow
      --description=example-rule
    """,
}
