concat method

@override AIChatMessage concat(ChatMessage other)

Merges this message with another by concatenating the content.

Implementation

@override
AIChatMessage concat(final ChatMessage other) {
  if (other is! AIChatMessage) {
    return this;
  }

  final mergedBlocks = [...content];
  for (final otherBlock in other.content) {
    final matchingIndex = mergedBlocks.indexWhere(
      (block) => block.canMerge(otherBlock),
    );
    if (matchingIndex == -1) {
      mergedBlocks.add(otherBlock);
    } else {
      mergedBlocks[matchingIndex] = mergedBlocks[matchingIndex].concat(
        otherBlock,
      );
    }
  }
  return AIChatMessage(content: mergedBlocks);
}