require 'digest'
require 'eth'

# Define the event structure
event = Eth::Contract::Event.new({
  "name" => "TokenMint",
  "inputs" => [
    { "indexed" => true, "name" => "collection", "type" => "address" },
    { "indexed" => true, "name" => "tokenId", "type" => "uint256" },
    { "indexed" => true, "name" => "ipfsHash", "type" => "bytes32" },
    { "indexed" => false, "name" => "to", "type" => "address" }
  ]
})

# Topics (indexed parameters)
topics = [
  "0x56cf26bc53ebe38f9e4d908b15e9c50ad826767b3ae8726088db3772f9f9b61f", # Event signature
  "0x0000000000000000000000005c9cbf795b4d113e0cb34c5eb60ca1f41670d2fb", # collection
  "0x3c9995b18871ee6c45703900fdc22b220944763432b726a2d37e95559b866506", # tokenId
  "0xa02633d596babc5141f89d9f5737410b7559353a4aa3328c2a67668193eaa209"  # ipfsHash
]

# Data (non-indexed parameters)
data = "0x000000000000000000000000f0d00750656f12ab7550bf5039d74691f9e461f0" # to address

# Decode the parameters using the event's `decode_params` method
decoded = event.decode_params(topics, data)

# Output the decoded values
puts "Collection: #{decoded["collection"]}" # Expected: "0x5c9cbf795b4d113e0cb34c5eb60ca1f41670d2fb"
puts "Token ID: #{decoded["tokenId"]}" # Expected: 27410131662392648286045511960347474962097127373970128911820026866366436238598
puts "IPFS Hash: #{decoded["ipfsHash"].unpack1("H*")}" # Expected hex representation of the bytes32 hash
puts "To Address: #{decoded["to"]}" # Expected: "0xf0d00750656f12ab7550bf5039d74691f9e461f0"