/**
 * Attachment size configuration for messaging channels
 *
 * Environment variables:
 * - BRIDGE_MAX_ATTACHMENT_SIZE_MB: Maximum size for a single attachment in MB (default: 50)
 */

/**
 * Get the maximum attachment size in bytes from environment variable
 * Defaults to 50MB if not set
 */
export function getMaxAttachmentSize(): number {
  const envValue = process.env.BRIDGE_MAX_ATTACHMENT_SIZE_MB;
  const sizeInMB = envValue ? parseInt(envValue, 10) : 50;

  // Validate the value
  if (isNaN(sizeInMB) || sizeInMB <= 0) {
    console.warn(`Invalid BRIDGE_MAX_ATTACHMENT_SIZE_MB value: ${envValue}, using default 50MB`);
    return 50 * 1024 * 1024;
  }

  return sizeInMB * 1024 * 1024;
}

/**
 * Get the maximum total size for all attachments in a message
 * This is 4x the single attachment size
 */
export function getMaxTotalAttachmentSize(): number {
  return getMaxAttachmentSize() * 4;
}

/**
 * Maximum number of attachments per message
 */
export const MAX_ATTACHMENTS = 10;