WhatsApp/Signal/Formstack/admin updates

packages/bridge-common/lib/config/attachments.ts

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+/**
+ * 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;

packages/bridge-common/lib/config/signal.ts

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+/**
+ * Signal configuration
+ *
+ * Environment variables:
+ * - SIGNAL_AUTO_GROUP_NAME_TEMPLATE: Template for auto-created group names (default: "Support Request: {conversationId}")
+ *   Available placeholders: {conversationId}
+ */
+
+/**
+ * Get the Signal auto-group name template from environment variable
+ * Defaults to "Support Request: {conversationId}" if not set
+ */
+export function getSignalAutoGroupNameTemplate(): string {
+  const template = process.env.SIGNAL_AUTO_GROUP_NAME_TEMPLATE;
+
+  if (!template) {
+    return "Support Request: {conversationId}";
+  }
+
+  return template;
+}
+
+/**
+ * Build a Signal group name from the template and conversation ID
+ */
+export function buildSignalGroupName(conversationId: string): string {
+  const template = getSignalAutoGroupNameTemplate();
+  return template.replace('{conversationId}', conversationId);
+}