schema.graphql

# To improve query performance, we strongly suggest adding indexes to any field that you plan to filter or sort by
# Add the `@index` or `@index(unique: true)` annotation after any non-key field
# https://academy.subquery.network/build/graphql.html#indexing-by-non-primary-key-field

type Token @entity {
  id: ID!
  owner: Owner
  uri: String
  transfers: [Transfer!]! @derivedFrom(field: "token")
  contract: Contract
}

type Owner @entity {
  id: ID!
  ownedTokens: [Token!]! @derivedFrom(field: "owner")
  balance: BigInt
}

type Contract @entity {
  id: ID!
  name: String
  symbol: String
  totalSupply: BigInt
  mintedTokens: [Token!]! @derivedFrom(field: "contract")
}

type Transfer @entity {
  id: ID!
  token: Token!
  # Empty from is minting
  from: Owner
  # Empty to is burning
  to: Owner
  timestamp: BigInt!
  block: BigInt!
  transactionHash: String!
}