const ChainUtil = require('../chain-util');

class Metadata {
  constructor() {
    this.id = null;
    this.Signiture        = null;
    this.Name             = null;
    this.Geo              = null;
   // this.GeospatialLocation              = [];
  //  this.Owenership = null;
  //  this.Cost = null;
  //  this.Identifications = null;
  //  this.Integration = null;

    this.IP_URL           = null;
    this.Topic_Token      = null;
    this.Permission       = null;
    this.RequestDetail    = null;
    this.OrgOwner         = null;
    this.DepOwner         = null;
    this.PrsnOwner        = null;
    this.MetaHash         = null;
    this.PaymentPerKbyte  = null;
    this.PaymentPerMinute = null;
    this.Protocol         = null;
    this.MessageAttributes= {};
    this.Interval         = null;
    this.FurtherDetails   = null;
    this.SSNmetadata      = null;
  }

  static MetadataOfIoTDevice(senderWallet, Name,Geo ,IP_URL , Topic_Token, Permission, RequestDetail, OrgOwner, DepOwner,PrsnOwner, PaymentPerKbyte, PaymentPerMinute, Protocol, MessageAttributes, Intrval, FurtherDetails, SSNmetadata) {
    const metadata = new this();
    metadata.id                  = ChainUtil.id();
    metadata.Name                = Name;
    metadata.Geo                 = Geo;
    metadata.IP_URL              = IP_URL;
    metadata.Topic_Token         = Topic_Token;
    metadata.Permission          = Permission;
    metadata.RequestDetail       = RequestDetail
    metadata.OrgOwner            = OrgOwner;
    metadata.DepOwner            = DepOwner;
    metadata.PrsnOwner           = PrsnOwner;
    metadata.PaymentPerKbyte     = PaymentPerKbyte ;
    metadata.PaymentPerMinute    = PaymentPerMinute;
    metadata.Protocol            = Protocol;
    metadata.MessageAttributes   = MessageAttributes;
   // metadata.MessageAttributes['DeviceID']   = metadata.id;
   // metadata.MessageAttributes['DeviceName'] = Name;
   // metadata.MessageAttributes['Sensors'] =[{"SensorName":"","Value":"" , "Unit":""}];
   // metadata.MessageAttributes['TimeStamp'] = "";
    metadata.Interval            = Intrval;
    metadata.FurtherDetails      = FurtherDetails;  
    metadata.SSNmetadata         = SSNmetadata;
    metadata.MetaHash            = ChainUtil.hash(SSNmetadata);
    Metadata.signMetadata(metadata, senderWallet);
    return metadata;
  }

  static newMetadata(senderWallet,Name,Geo ,IP_URL , Topic_Token, Permission, RequestDetail, 
    OrgOwner, DepOwner,PrsnOwner, PaymentPerKbyte, PaymentPerMinute, Protocol, MessageAttributes, 
    Interval, FurtherDetails, SSNmetadata){
    return Metadata.MetadataOfIoTDevice(senderWallet, Name,Geo ,IP_URL , Topic_Token, Permission, 
      RequestDetail, OrgOwner, DepOwner,PrsnOwner, PaymentPerKbyte, PaymentPerMinute, Protocol, 
      MessageAttributes, Interval, FurtherDetails, SSNmetadata
    );
  
  }

  static signMetadata (metadata, senderWallet) {
    metadata.Signiture = {
        timestamp: Date.now(),
        address: senderWallet.publicKey,
        signature: senderWallet.sign(ChainUtil.hash(metadata.SSNmetadata))
    }
    }


    static verifyMetadata(metadata) {
        return ChainUtil.verifySignature(
          metadata.Signiture.address,
          metadata.Signiture.signature,
          ChainUtil.hash(metadata.SSNmetadata)
        );
      }
}

module.exports = Metadata;