Please address the comments from this code review:
## Overall Comments
- The `if (isVideo && !SAVE_VIDEO)` block is repeated in multiple places; consider extracting that logic into a shared helper or middleware to DRY up the upload flow.
- The conditional logic in getConversationMessage around SAVE_VIDEO and media types is becoming complex—refactor or simplify it into smaller functions for readability and easier maintenance.
- Instead of throwing a generic Error when video uploads are disabled, use a custom error class or error code so downstream logic can handle this case more explicitly.

## Individual Comments

### Comment 1
<location> `src/api/integrations/channel/whatsapp/whatsapp.baileys.service.ts:1263` </location>
<code_context>
             if (isMedia) {
               if (this.configService.get<S3>('S3').ENABLE) {
                 try {
+                  if (isVideo && !this.configService.get<S3>('S3').SAVE_VIDEO) {
+                    throw new Error('Video upload is disabled.');
+                  }
+
</code_context>

<issue_to_address>
Throwing an error for disabled video upload may disrupt flow.

Instead of raising an exception, consider skipping video uploads and logging a warning to prevent service interruption for other media types.
</issue_to_address>

<suggested_fix>
<<<<<<< SEARCH
                  if (isVideo && !this.configService.get<S3>('S3').SAVE_VIDEO) {
                    throw new Error('Video upload is disabled.');
                  }
=======
                  if (isVideo && !this.configService.get<S3>('S3').SAVE_VIDEO) {
                    this.logger.warn('Video upload is disabled. Skipping video upload.');
                    // Skip video upload by returning early from this block
                    return;
                  }
>>>>>>> REPLACE

</suggested_fix>

### Comment 2
<location> `src/api/integrations/channel/meta/whatsapp.business.service.ts:462` </location>
<code_context>
                   mediaType = 'video';
                 }

+                if (mediaType == 'video' && !this.configService.get<S3>('S3').SAVE_VIDEO) {
+                  throw new Error('Video upload is disabled.');
+                }
+
</code_context>

<issue_to_address>
Error thrown for disabled video upload may affect user experience.

Instead of raising an exception, consider returning a user-friendly message or logging the event to avoid disrupting the user experience.
</issue_to_address>

<suggested_fix>
<<<<<<< SEARCH
                if (mediaType == 'video' && !this.configService.get<S3>('S3').SAVE_VIDEO) {
                  throw new Error('Video upload is disabled.');
                }
=======
                if (mediaType == 'video' && !this.configService.get<S3>('S3').SAVE_VIDEO) {
                  this.logger?.info?.('Video upload attempted but is disabled by configuration.');
                  return {
                    success: false,
                    message: 'Video upload is currently disabled. Please contact support if you need this feature enabled.',
                  };
                }
>>>>>>> REPLACE

</suggested_fix>

### Comment 3
<location> `src/config/env.config.ts:285` </location>
<code_context>
   USE_SSL?: boolean;
   REGION?: string;
   SKIP_POLICY?: boolean;
+  SAVE_VIDEO: boolean;
 };

</code_context>

<issue_to_address>
SAVE_VIDEO type should be optional for consistency.

Marking SAVE_VIDEO as optional aligns with the other S3 config properties and helps prevent issues with undefined values.
</issue_to_address>

<suggested_fix>
<<<<<<< SEARCH
  SAVE_VIDEO: boolean;
=======
  SAVE_VIDEO?: boolean;
>>>>>>> REPLACE

</suggested_fix>