chore: add plugin for logging context

Author: Q1w1N

.changeset/khaki-coats-do.md

@@ -0,0 +1,5 @@
+---
+'@callstack/byorg-core': patch
+---
+
+core: add plugin for logging context

packages/core/src/index.ts

@@ -28,7 +28,7 @@ export { VercelChatModelAdapter } from './ai/vercel.js';
 
 export type { Command, CommandsPluginConfig } from './plugins/commands.js';
 export { createCommandsPlugin } from './plugins/commands.js';
-export { loggingPlugin } from './plugins/logging.js';
+export { loggingPlugin, contextLoggerBuilder } from './plugins/logging.js';
 
 export type { ApplicationTool } from './tools.js';
 

packages/core/src/plugins/logging.ts

@@ -1,4 +1,6 @@
-import { ApplicationPlugin, MessageResponse } from '../index.js';
+import { inspect } from 'util';
+import { logger } from '@callstack/byorg-utils';
+import { ApplicationPlugin, MessageResponse, RequestContext } from '../index.js';
 
 const getFormattedNow = () => new Date().toISOString();
 
@@ -23,3 +25,27 @@ export const loggingPlugin: ApplicationPlugin = {
     }
   },
 };
+
+export const contextLoggerBuilder = (fieldsToLog: (keyof RequestContext)[]): ApplicationPlugin => {
+  return {
+    name: 'context-logger',
+    middleware: (context, next): Promise<MessageResponse> => {
+      const toLog: Record<string, unknown> = {};
+
+      for (const field of fieldsToLog) {
+        if (field in context) {
+          toLog[field] = context[field];
+        } else {
+          logger.debug(`No ${field} in context.`);
+        }
+      }
+
+      if (Object.keys(toLog).length > 0) {
+        console.log(inspect(toLog, false, null, true));
+      }
+
+      // Continue middleware chain
+      return next();
+    },
+  };
+};