Refactor

app/models/eth_transaction.rb

@@ -29,7 +29,6 @@ def self.event_signature(event_name)
   def transaction_hash
     tx_hash
   end
-
 
   sig { params(block_result: T.untyped, receipt_result: T.untyped).returns(T::Array[EthTransaction]) }
   def self.from_rpc_result(block_result, receipt_result)
@@ -66,8 +65,8 @@ def self.ethscription_txs_from_rpc_results(block_results, receipt_results, ethsc
     eth_txs.sort_by(&:transaction_index).each do |eth_tx|
       next unless eth_tx.is_success?
 
-      # Build deposits using the unified builder
-      deposits = EthscriptionTransactionBuilder.build_deposits(eth_tx, ethscriptions_block)
+      # Build deposits directly from this EthTransaction instance
+      deposits = eth_tx.build_ethscription_deposits(ethscriptions_block)
       all_deposits.concat(deposits)
     end
 
@@ -83,4 +82,182 @@ def is_success?
   def ethscription_source_hash
     tx_hash
   end
+
+  # Build deposit transactions (EthscriptionTransaction objects) from this L1 transaction
+  sig { params(ethscriptions_block: EthscriptionsBlock).returns(T::Array[EthscriptionTransaction]) }
+  def build_ethscription_deposits(ethscriptions_block)
+    @transactions = []
+
+    # 1. Process calldata (try as creation, then as transfer)
+    process_calldata
+
+    # 2. Process events (creations and transfers)
+    process_events
+
+    @transactions.compact
+  end
+
+  private
+
+  def process_calldata
+    return unless to_address.present?
+
+    try_calldata_creation
+    try_calldata_transfer
+  end
+
+  def try_calldata_creation
+    transaction = EthscriptionTransaction.build_create_ethscription(
+      eth_transaction: self,
+      creator: normalize_address(from_address),
+      initial_owner: normalize_address(to_address),
+      content_uri: utf8_input,
+      source_type: :input,
+      source_index: transaction_index
+    )
+
+    @transactions << transaction
+  end
+
+  def try_calldata_transfer
+    valid_length = if SysConfig.esip5_enabled?(block_number)
+      input.bytesize > 0 && input.bytesize % 32 == 0
+    else
+      input.bytesize == 32
+    end
+
+    return unless valid_length
+
+    input_hex = input.to_hex.delete_prefix('0x')
+
+    ids = input_hex.scan(/.{64}/).map { |hash_hex| normalize_hash("0x#{hash_hex}") }
+
+    # Create transfer transaction
+    transaction = EthscriptionTransaction.build_transfer(
+      eth_transaction: self,
+      from_address: normalize_address(from_address),
+      to_address: normalize_address(to_address),
+      ethscription_ids: ids,
+      source_type: :input,
+      source_index: transaction_index
+    )
+
+    @transactions << transaction
+  end
+
+  def process_events
+    ordered_events.each do |log|
+      begin
+        case log['topics']&.first
+        when CreateEthscriptionEventSig
+          process_create_event(log)
+        when Esip1EventSig
+          process_esip1_transfer_event(log)
+        when Esip2EventSig
+          process_esip2_transfer_event(log)
+        end
+      rescue Eth::Abi::DecodingError, RangeError => e
+        Rails.logger.error "Failed to decode event: #{e.message}"
+        next
+      end
+    end
+  end
+
+  def process_create_event(log)
+    return unless SysConfig.esip3_enabled?(block_number)
+    return unless log['topics'].length == 2
+
+    # Decode event data
+    initial_owner = Eth::Abi.decode(['address'], log['topics'].second).first
+    content_uri_data = Eth::Abi.decode(['string'], log['data']).first
+    content_uri = HexDataProcessor.clean_utf8(content_uri_data)
+
+    transaction = EthscriptionTransaction.build_create_ethscription(
+      eth_transaction: self,
+      creator: normalize_address(log['address']),
+      initial_owner: normalize_address(initial_owner),
+      content_uri: content_uri,
+      source_type: :event,
+      source_index: log['logIndex'].to_i(16)
+    )
+
+    @transactions << transaction
+  end
+
+  def process_esip1_transfer_event(log)
+    return unless SysConfig.esip1_enabled?(block_number)
+    return unless log['topics'].length == 3
+
+    # Decode event data
+    event_to = Eth::Abi.decode(['address'], log['topics'].second).first
+    tx_hash_hex = Eth::Util.bin_to_prefixed_hex(
+      Eth::Abi.decode(['bytes32'], log['topics'].third).first
+    )
+
+    ethscription_id = normalize_hash(tx_hash_hex)
+
+    transaction = EthscriptionTransaction.build_transfer(
+      eth_transaction: self,
+      from_address: normalize_address(log['address']),
+      to_address: normalize_address(event_to),
+      ethscription_ids: ethscription_id,  # Single ID, will be wrapped in array
+      source_type: :event,
+      source_index: log['logIndex'].to_i(16)
+    )
+
+    @transactions << transaction
+  end
+
+  def process_esip2_transfer_event(log)
+    return unless SysConfig.esip2_enabled?(block_number)
+    return unless log['topics'].length == 4
+
+    event_previous_owner = Eth::Abi.decode(['address'], log['topics'].second).first
+    event_to = Eth::Abi.decode(['address'], log['topics'].third).first
+    tx_hash_hex = Eth::Util.bin_to_prefixed_hex(
+      Eth::Abi.decode(['bytes32'], log['topics'].fourth).first
+    )
+
+    ethscription_id = normalize_hash(tx_hash_hex)
+
+    transaction = EthscriptionTransaction.build_transfer(
+      eth_transaction: self,
+      from_address: normalize_address(log['address']),
+      to_address: normalize_address(event_to),
+      ethscription_ids: ethscription_id,  # Single ID, will be wrapped in array
+      enforced_previous_owner: normalize_address(event_previous_owner),
+      source_type: :event,
+      source_index: log['logIndex'].to_i(16)
+    )
+
+    @transactions << transaction
+  end
+
+  def ordered_events
+    return [] unless logs
+
+    logs.reject { |log| log['removed'] }
+        .sort_by { |log| log['logIndex'].to_i(16) }
+  end
+
+  def utf8_input
+    HexDataProcessor.hex_to_utf8(
+      input.to_hex,
+      support_gzip: SysConfig.esip7_enabled?(block_number)
+    )
+  end
+
+  def normalize_address(addr)
+    return nil unless addr
+    # Handle both Address20 objects and strings
+    addr_str = addr.respond_to?(:to_hex) ? addr.to_hex : addr.to_s
+    addr_str.downcase
+  end
+
+  def normalize_hash(hash)
+    return nil unless hash
+    # Handle both Hash32 objects and strings
+    hash_str = hash.respond_to?(:to_hex) ? hash.to_hex : hash.to_s
+    hash_str.downcase
+  end
 end

app/models/ethscription_transaction.rb

@@ -17,8 +17,7 @@ class EthscriptionTransaction < T::Struct
   prop :content_uri, T.nilable(String)
 
   # Transfer operation fields
-  prop :ethscription_id, T.nilable(String)
-  prop :transfer_ids, T.nilable(T::Array[String])
+  prop :transfer_ids, T.nilable(T::Array[String])  # Always an array, even for single transfers
   prop :transfer_from_address, T.nilable(String)
   prop :transfer_to_address, T.nilable(String)
   prop :enforced_previous_owner, T.nilable(String)
@@ -38,14 +37,16 @@ class EthscriptionTransaction < T::Struct
   TO_ADDRESS = SysConfig::ETHSCRIPTIONS_ADDRESS
 
   # Factory method for create operations
-  def self.create_ethscription(
+  def self.build_create_ethscription(
     eth_transaction:,
     creator:,
     initial_owner:,
     content_uri:,
     source_type:,
     source_index:
   )
+    return unless DataUri.valid?(content_uri)
+
     new(
       from_address: Address20.from_hex(creator.is_a?(String) ? creator : creator.to_hex),
       eth_transaction: eth_transaction,
@@ -58,22 +59,26 @@ def self.create_ethscription(
     )
   end
 
-  # Factory method for transfer operations
-  def self.transfer_ethscription(
+  # Transfer factory - handles single, multiple, and previous owner cases
+  def self.build_transfer(
     eth_transaction:,
     from_address:,
     to_address:,
-    ethscription_id:,
-    enforced_previous_owner: nil,
     source_type:,
-    source_index:
+    source_index:,
+    ethscription_ids:,  # Can be a single ID or an array of IDs
+    enforced_previous_owner: nil
   )
+    # Normalize to array - accept either single ID or array of IDs
+    ids = Array.wrap(ethscription_ids)
+
+    # Determine operation type
     operation_type = enforced_previous_owner ? 'transfer_with_previous_owner' : 'transfer'
 
     new(
       from_address: Address20.from_hex(from_address.is_a?(String) ? from_address : from_address.to_hex),
       eth_transaction: eth_transaction,
-      ethscription_id: ethscription_id,
+      transfer_ids: ids,  # Always use array
       transfer_from_address: from_address,
       transfer_to_address: to_address,
       enforced_previous_owner: enforced_previous_owner,
@@ -83,35 +88,14 @@ def self.transfer_ethscription(
     )
   end
 
-  # Factory method for transferMultipleEthscriptions (inputs only)
-  def self.transfer_multiple_ethscriptions(
-    eth_transaction:,
-    from_address:,
-    to_address:,
-    ethscription_ids:,
-    source_type:,
-    source_index:
-  )
-    new(
-      from_address: Address20.from_hex(from_address.is_a?(String) ? from_address : from_address.to_hex),
-      eth_transaction: eth_transaction,
-      transfer_ids: ethscription_ids,
-      transfer_from_address: from_address,
-      transfer_to_address: to_address,
-      source_type: source_type&.to_sym,
-      source_index: source_index,
-      ethscription_operation: 'transfer'
-    )
-  end
-
   # Get function selector for this operation
   def function_selector
     function_signature = case ethscription_operation
     when 'create'
       'createEthscription((bytes32,bytes32,address,bytes,string,bool,(string,string,bytes)))'
     when 'transfer'
-      if transfer_ids && transfer_ids.any?
-        'transferMultipleEthscriptions(bytes32[],address)'
+      if transfer_ids.length > 1
+        'transferEthscriptions(address,bytes32[])'
       else
         'transferEthscription(address,bytes32)'
       end
@@ -145,34 +129,6 @@ def source_hash
     Hash32.from_bin(bin_val)
   end
 
-  def valid_create?
-    content_uri.present? &&
-    creator.present? &&
-    initial_owner.present? &&
-    DataUri.valid?(content_uri)
-  end
-
-  def valid_transfer?
-    # Basic field validation - if we extracted the data properly, ABI encoding should work
-    case ethscription_operation
-    when 'transfer'
-      if transfer_ids
-        # Multiple transfer (input-based)
-        transfer_ids.is_a?(Array) && transfer_ids.any?
-      else
-        # Single transfer (event-based)
-        ethscription_id.present?
-      end
-    when 'transfer_with_previous_owner'
-      # Always single transfer (event-based only)
-      ethscription_id.present?
-    else
-      false
-    end &&
-    transfer_from_address.present? &&
-    transfer_to_address.present?
-  end
-
   public
 
   # Dynamic input method - builds calldata on demand
@@ -181,7 +137,7 @@ def input
     when 'create'
       ByteString.from_bin(build_create_calldata)
     when 'transfer'
-      if transfer_ids && transfer_ids.any?
+      if transfer_ids.length > 1
         ByteString.from_bin(build_transfer_multiple_calldata)
       else
         ByteString.from_bin(build_transfer_calldata)
@@ -267,7 +223,7 @@ def build_transfer_calldata
 
     # Convert to binary for ABI
     to_bin = address_to_bin(transfer_to_address)
-    id_bin = hex_to_bin(ethscription_id)
+    id_bin = hex_to_bin(transfer_ids.first)
 
     encoded = Eth::Abi.encode(['address', 'bytes32'], [to_bin, id_bin])
 
@@ -281,7 +237,7 @@ def build_transfer_with_previous_owner_calldata
 
     # Convert to binary for ABI
     to_bin = address_to_bin(transfer_to_address)
-    id_bin = hex_to_bin(ethscription_id)
+    id_bin = hex_to_bin(transfer_ids.first)
     prev_bin = address_to_bin(enforced_previous_owner)
 
     encoded = Eth::Abi.encode(['address', 'bytes32', 'address'], [to_bin, id_bin, prev_bin])
@@ -294,10 +250,10 @@ def build_transfer_multiple_calldata
     # Get function selector as binary
     function_sig = function_selector.b
 
-    ids_bin = (transfer_ids || []).map { |id| hex_to_bin(id) }
     to_bin = address_to_bin(transfer_to_address)
+    ids_bin = transfer_ids.map { |id| hex_to_bin(id) }
 
-    encoded = Eth::Abi.encode(['bytes32[]', 'address'], [ids_bin, to_bin])
+    encoded = Eth::Abi.encode(['address', 'bytes32[]'], [to_bin, ids_bin])
 
     (function_sig + encoded).b
   end