# Copyright 2022-2023 ETSI TeraFlowSDN - TFS OSG (https://tfs.etsi.org/)
#
# 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.

import json , logging
from sqlalchemy import Column, String, Integer , ForeignKey, Boolean
from sqlalchemy.dialects.postgresql import ARRAY
from sqlalchemy.orm import relationship
from ._Base import _Base

class OpticalConfigModel(_Base):
    __tablename__ = 'optical_config'
    opticalconfig_uuid = Column(String, primary_key=True)
    channel_namespace  = Column(String, nullable=True)
    endpoints          = Column(ARRAY(String), nullable=True)
    type               = Column(String,nullable=False)
    
    # transcievers       = Column(ARRAY(String), nullable=True)
    # interfaces         = Column(String, nullable=True)
  
   
    #channels           = relationship("OpticalChannelModel")
    transponders=relationship("TransponderTypeModel")
    
    
    device_uuid = Column(ForeignKey("device.device_uuid",ondelete="CASCADE"),index=True ,nullable=False)
    device= relationship("DeviceModel",  back_populates='optical_config')
    

    
    def dump_id (self ):
        return {
            "opticalconfig_uuid":self.opticalconfig_uuid,
            "device_uuid" :self.device_uuid
        }

    def dump(self):
        obj={
            # "channels"          : [channel.dump() for channel in self.channels],
            # "transceivers"      : {"transceiver": [transciever for transciever in self.transcievers]},
            # "interfaces"        : {"interface":json.loads(self.interfaces) if self.interfaces else ''},
            "channel_namespace" : self.channel_namespace,
            "endpoints"         : [json.loads(endpoint) for endpoint in self.endpoints if endpoint],
            "device_name"       : self.device.device_name,
            "type"              : self.type
        }
        if self.type =="optical-transponder" :
            channels= [transponer.dump() for transponer in self.transponders ][0]
            obj['transponder']=channels
            logging.info(f"optical_config_model {obj}")
        return obj
        

class TransponderTypeModel (_Base):
    
    __tablename__             = 'transponder_type'
    transponder_uuid          = Column(String, primary_key=True)
           
    transcievers              = Column(ARRAY(String), nullable=True)
    interfaces                = Column(String, nullable=True)
    channels                  = relationship("OpticalChannelModel")
    
    opticalconfig_uuid        = Column(ForeignKey('optical_config.opticalconfig_uuid',  ondelete='CASCADE' ),index=True ,nullable=False)
    opticalconfig             = relationship('OpticalConfigModel',     back_populates='transponders')
    
    def dump_id (self): 
        return {
            "transponder_uuid":self.transponder_uuid
        }
    
    def dump (self):
        return {
            "channels"          : [channel.dump() for channel in self.channels],
            "transceivers"      : {"transceiver": [transciever for transciever in self.transcievers]},
            "interfaces"        : {"interface":json.loads(self.interfaces) if self.interfaces else ''},
            "trasponder_uuid"   : self.dump_id()
        }

class OpticalChannelModel(_Base):
    __tablename__         =      'optical_channel'
    channel_uuid          =       Column(String, primary_key=True)
    
    channel_name          =       Column (String,nullable=True)
    frequency             =       Column(Integer, nullable=True)
    operational_mode      =       Column(Integer, nullable=True)
    status                =       Column(String , nullable=True)
    target_output_power   =       Column(String, nullable=True)
    
    transponder_uuid      =       Column(ForeignKey('transponder_type.transponder_uuid', ondelete='CASCADE' ),nullable=False)
    transponder           =       relationship('TransponderTypeModel',back_populates='channels')
    # opticalconfig_uuid        = Column(ForeignKey('optical_config.opticalconfig_uuid',         ondelete='CASCADE' ), primary_key=True)
    # opticalconfig             = relationship('OpticalConfigModel',     back_populates='channels')
    def dump_id (self ):
        return {
            "channel_uuid":self.channel_uuid
        }

    def dump(self):
        return {
            "name"      :{'index':self.channel_name},
            "frequency"         : self.frequency,
            "target-output-power"      : self.target_output_power,
            "operational-mode"  : self.operational_mode,
            "status":self.status
        }
        
