🪨 feat: RAG API Support for AWS Bedrock (danny-avila#4322)

* feat: bedrock/agents legacy rag api file processing

* refactor: use agent instructions for build message options

Author: danny-avila

api/server/controllers/agents/client.js

@@ -184,10 +184,10 @@ class AgentClient extends BaseClient {
     );
   }
 
-  getBuildMessagesOptions(opts) {
+  getBuildMessagesOptions() {
     return {
-      instructions: opts.instructions,
-      additional_instructions: opts.additional_instructions,
+      instructions: this.options.agent.instructions,
+      additional_instructions: this.options.agent.additional_instructions,
     };
   }
 
@@ -214,8 +214,6 @@ class AgentClient extends BaseClient {
     });
 
     let payload;
-    /** @type {{ role: string; name: string; content: string } | undefined} */
-    let systemMessage;
     /** @type {number | undefined} */
     let promptTokens;
 
@@ -263,21 +261,21 @@ class AgentClient extends BaseClient {
       }
 
       /* If message has files, calculate image token cost */
-      // if (this.message_file_map && this.message_file_map[message.messageId]) {
-      //   const attachments = this.message_file_map[message.messageId];
-      //   for (const file of attachments) {
-      //     if (file.embedded) {
-      //       this.contextHandlers?.processFile(file);
-      //       continue;
-      //     }
-
-      //     orderedMessages[i].tokenCount += this.calculateImageTokenCost({
-      //       width: file.width,
-      //       height: file.height,
-      //       detail: this.options.imageDetail ?? ImageDetail.auto,
-      //     });
-      //   }
-      // }
+      if (this.message_file_map && this.message_file_map[message.messageId]) {
+        const attachments = this.message_file_map[message.messageId];
+        for (const file of attachments) {
+          if (file.embedded) {
+            this.contextHandlers?.processFile(file);
+            continue;
+          }
+
+          // orderedMessages[i].tokenCount += this.calculateImageTokenCost({
+          //   width: file.width,
+          //   height: file.height,
+          //   detail: this.options.imageDetail ?? ImageDetail.auto,
+          // });
+        }
+      }
 
       return formattedMessage;
     });
@@ -288,20 +286,7 @@ class AgentClient extends BaseClient {
     }
 
     if (systemContent) {
-      systemContent = `${systemContent.trim()}`;
-      systemMessage = {
-        role: 'system',
-        name: 'instructions',
-        content: systemContent,
-      };
-
-      if (this.contextStrategy) {
-        const instructionTokens = this.getTokenCountForMessage(systemMessage);
-        if (instructionTokens >= 0) {
-          const firstMessageTokens = orderedMessages[0].tokenCount ?? 0;
-          orderedMessages[0].tokenCount = firstMessageTokens + instructionTokens;
-        }
-      }
+      this.options.agent.instructions = systemContent;
     }
 
     if (this.contextStrategy) {