Method splitMessage

src/runtime/adapters/feishu.ts:342–372

(text: string)

    for (const chunk of this.splitMessage(text)) {
      await this.sendSafe(chatId, chunk, replyTo);
    }
  }

  private splitMessage(text: string): string[] {
    if (text.length <= MAX_MESSAGE_LENGTH) {
      return [text];
    }

    const chunks: string[] = [];
    let remaining = text;

    while (remaining.length > 0) {
      if (remaining.length <= MAX_MESSAGE_LENGTH) {
        chunks.push(remaining);
        break;
      }

      let splitAt = remaining.lastIndexOf("\n\n", MAX_MESSAGE_LENGTH);
      if (splitAt < MAX_MESSAGE_LENGTH * 0.5) {
        splitAt = remaining.lastIndexOf("\n", MAX_MESSAGE_LENGTH);
      }
      if (splitAt < MAX_MESSAGE_LENGTH * 0.3) {
        splitAt = remaining.lastIndexOf(" ", MAX_MESSAGE_LENGTH);
      }
      if (splitAt < 1) {
        splitAt = MAX_MESSAGE_LENGTH;
      }

      chunks.push(remaining.slice(0, splitAt));
      remaining = remaining.slice(splitAt).trimStart();
    }

    return chunks;
  }