RockBandNFT.hs

template RockBandNFT
  with
    uniqueNFTId: Text
    band    : Party
    fan     : Party
    numConcerts  : Integer
    issuedDate: Date
  where
    signatory band
    observer fan
 
    controller band can
      IssueConcertPass : ContractId ConcertPass
        with
          concertName: Text
        do -- check # of concerts allowed and issue Concert Pass
          if numConcerts > 0
            then
              do  
                create this with numConcerts = numConcerts - 1
                create ConcertPass with ..
          else do
            abort "Insufficient benefits"
 
    controller band can
      AddBenefits : ContractId RockBandNFT
        with
          numConcertsToAdd : Integer
        do
          create this with numConcerts = numConcerts + numConcertsToAdd
   
 
template ConcertPass  
  with
    uniqueNFTId: Text
    band: Party
    fan: Party
    concertName: Text
  where
    signatory band
    observer fan