# coding: utf-8
#

import copy
from django.utils.translation import ugettext_lazy as _
from rest_framework import serializers

from common.serializers import AdaptedBulkListSerializer
from common.fields.serializer import CustomMetaDictField
from orgs.mixins.serializers import BulkOrgResourceModelSerializer
from assets.models import Asset

from .. import const
from ..models import RemoteApp, Category, Application


class RemmoteAppCategorySerializer(serializers.Serializer):
    asset = serializers.CharField(max_length=36, label=_('Assets'))


class RemoteAppAttrsSerializer(RemmoteAppCategorySerializer):
    path = serializers.CharField(label=_('Remote App path'))


class ChromeAttrsSerializer(RemoteAppAttrsSerializer):
    REMOTE_APP_PATH = 'C:\Program Files (x86)\Google\Chrome\Application\chrome.exe'
    path = serializers.CharField(label=_('Remote App path'), default=REMOTE_APP_PATH)
    chrome_target = serializers.CharField(label=_('Target URL'))
    chrome_username = serializers.CharField(label=_('Username'))
    chrome_password = serializers.CharField(write_only=True, label=_('Password'))


class MySQLWorkbenchAttrsSerializer(RemoteAppAttrsSerializer):
    REMOTE_APP_PATH = 'C:\Program Files\MySQL\MySQL Workbench 8.0 CE\MySQLWorkbench.exe'
    path = serializers.CharField(label=_('Remote App path'), default=REMOTE_APP_PATH)
    mysql_workbench_ip = serializers.CharField(label=_('IP'))
    mysql_workbench_port = serializers.IntegerField(label=_('Port'))
    mysql_workbench_name = serializers.CharField(label=_('Database'))
    mysql_workbench_username = serializers.CharField(label=_('Username'))
    mysql_workbench_password = serializers.CharField(write_only=True, label=_('Password'))


class VMwareClientAttrsSerializer(RemoteAppAttrsSerializer):
    REMOTE_APP_PATH = 'C:\Program Files (x86)\VMware\Infrastructure\Virtual Infrastructure Client\Launcher\VpxClient.exe'
    path = serializers.CharField(label=_('Remote App path'), default=REMOTE_APP_PATH)
    vmware_target = serializers.CharField(label=_('Target URL'))
    vmware_username = serializers.CharField(label=_('Username'))
    vmware_password = serializers.CharField(write_only=True, label=_('Password'))


class CustomRemoteAppAttrsSeralizers(RemoteAppAttrsSerializer):
    custom_cmdline = serializers.CharField(label=_('Operating parameter'))
    custom_target = serializers.CharField(label=_('Target url'))
    custom_username = serializers.CharField(label=_('Username'))
    custom_password = serializers.CharField(write_only=True, label=_('Password'))


class RemoteAppParamsDictField(CustomMetaDictField):
    type_fields_map = const.REMOTE_APP_TYPE_FIELDS_MAP
    default_type = const.REMOTE_APP_TYPE_CHROME
    convert_key_remove_type_prefix = False
    convert_key_to_upper = False


class RemoteAppSerializer(BulkOrgResourceModelSerializer):
    params = RemoteAppParamsDictField()
    type_fields_map = const.REMOTE_APP_TYPE_FIELDS_MAP

    class Meta:
        model = RemoteApp
        list_serializer_class = AdaptedBulkListSerializer
        fields = [
            'id', 'name', 'asset', 'asset_info', 'type', 'get_type_display',
            'path', 'params', 'date_created', 'created_by', 'comment',
        ]
        read_only_fields = [
            'created_by', 'date_created', 'asset_info',
            'get_type_display'
        ]

    def process_params(self, instance, validated_data):
        new_params = copy.deepcopy(validated_data.get('params', {}))
        tp = validated_data.get('type', '')

        if tp != instance.type:
            return new_params

        old_params = instance.params
        fields = self.type_fields_map.get(instance.type, [])
        for field in fields:
            if not field.get('write_only', False):
                continue
            field_name = field['name']
            new_value = new_params.get(field_name, '')
            old_value = old_params.get(field_name, '')
            field_value = new_value if new_value else old_value
            new_params[field_name] = field_value

        return new_params

    def update(self, instance, validated_data):
        params = self.process_params(instance, validated_data)
        validated_data['params'] = params
        return super().update(instance, validated_data)


class RemoteAppConnectionInfoSerializer(serializers.ModelSerializer):
    parameter_remote_app = serializers.SerializerMethodField()
    asset = serializers.SerializerMethodField()

    class Meta:
        model = Application
        fields = [
            'id', 'name', 'asset', 'parameter_remote_app',
        ]
        read_only_fields = ['parameter_remote_app']

    @staticmethod
    def get_parameters(obj):
        """
        返回Guacamole需要的RemoteApp配置参数信息中的parameters参数
        """
        serializer_cls = Category.get_type_serializer_cls(obj.type)
        fields = serializer_cls().get_fields()
        fields.pop('asset', None)
        fields_name = list(fields.keys())
        attrs = obj.attrs
        _parameters = list()
        _parameters.append(obj.type)
        for field_name in list(fields_name):
            value = attrs.get(field_name, None)
            if not value:
                continue
            if field_name == 'path':
                value = '\"%s\"' % value
            _parameters.append(str(value))
        _parameters = ' '.join(_parameters)
        return _parameters

    def get_parameter_remote_app(self, obj):
        parameters = self.get_parameters(obj)
        parameter = {
            'program': const.REMOTE_APP_BOOT_PROGRAM_NAME,
            'working_directory': '',
            'parameters': parameters,
        }
        return parameter

    @staticmethod
    def get_asset(obj):
        return obj.attrs.get('asset')