centralize all formatter prompt strings

src/services/llm/constants/formatter_constants.ts

@@ -156,4 +156,48 @@ export const FORMATTER_LOGS = {
         CONTEXT_CLEANING: (provider: string) => `Error cleaning content for ${provider}:`,
         ENCODING: 'Error fixing encoding issues:'
     }
-};
+};
+
+/**
+ * Message formatter text templates
+ */
+export const MESSAGE_FORMATTER_TEMPLATES = {
+    /**
+     * OpenAI-specific message templates
+     */
+    OPENAI: {
+        CONTEXT_INSTRUCTION: 'Please use the following context to respond to the user\'s messages:\n\n'
+    },
+
+    /**
+     * Anthropic-specific message templates
+     */
+    ANTHROPIC: {
+        CONTEXT_START: '\n\n<context>\n',
+        CONTEXT_END: '\n</context>'
+    },
+
+    /**
+     * Ollama-specific message templates
+     */
+    OLLAMA: {
+        REFERENCE_INFORMATION: '\n\nReference information:\n'
+    },
+
+    /**
+     * Default formatter message templates
+     */
+    DEFAULT: {
+        CONTEXT_INSTRUCTION: 'Here is context to help you answer my questions: '
+    }
+};
+
+/**
+ * Provider identifier constants
+ */
+export const PROVIDER_IDENTIFIERS = {
+    OPENAI: 'openai',
+    ANTHROPIC: 'anthropic',
+    OLLAMA: 'ollama',
+    DEFAULT: 'default'
+};

src/services/llm/pipeline/interfaces/message_formatter.ts

@@ -1,4 +1,5 @@
 import type { Message } from '../../ai_interface.js';
+import { MESSAGE_FORMATTER_TEMPLATES, PROVIDER_IDENTIFIERS } from '../../constants/formatter_constants.js';
 
 /**
  * Interface for message formatters that handle provider-specific message formatting
@@ -69,7 +70,7 @@ export class OpenAIMessageFormatter extends BaseMessageFormatter {
         if (context) {
             formattedMessages.push({
                 role: 'system',
-                content: `Please use the following context to respond to the user's messages:\n\n${context}`
+                content: MESSAGE_FORMATTER_TEMPLATES.OPENAI.CONTEXT_INSTRUCTION + context
             });
         }
 
@@ -102,7 +103,7 @@ export class AnthropicMessageFormatter extends BaseMessageFormatter {
 
         // For Claude, wrap context in XML tags for clear separation
         if (context) {
-            systemContent += `\n\n<context>\n${context}\n</context>`;
+            systemContent += MESSAGE_FORMATTER_TEMPLATES.ANTHROPIC.CONTEXT_START + context + MESSAGE_FORMATTER_TEMPLATES.ANTHROPIC.CONTEXT_END;
         }
 
         // Add system message if we have content
@@ -141,7 +142,7 @@ export class OllamaMessageFormatter extends BaseMessageFormatter {
 
         // Add context to system prompt
         if (context) {
-            systemContent += `\n\nReference information:\n${context}`;
+            systemContent += MESSAGE_FORMATTER_TEMPLATES.OLLAMA.REFERENCE_INFORMATION + context;
         }
 
         // Add system message if we have content
@@ -183,7 +184,7 @@ export class DefaultMessageFormatter extends BaseMessageFormatter {
         if (context) {
             formattedMessages.push({
                 role: 'user',
-                content: `Here is context to help you answer my questions: ${context}`
+                content: MESSAGE_FORMATTER_TEMPLATES.DEFAULT.CONTEXT_INSTRUCTION + context
             });
         }
 
@@ -199,10 +200,10 @@ export class DefaultMessageFormatter extends BaseMessageFormatter {
  */
 export class MessageFormatterFactory {
     private static formatters: Record<string, MessageFormatter> = {
-        openai: new OpenAIMessageFormatter(),
-        anthropic: new AnthropicMessageFormatter(),
-        ollama: new OllamaMessageFormatter(),
-        default: new DefaultMessageFormatter()
+        [PROVIDER_IDENTIFIERS.OPENAI]: new OpenAIMessageFormatter(),
+        [PROVIDER_IDENTIFIERS.ANTHROPIC]: new AnthropicMessageFormatter(),
+        [PROVIDER_IDENTIFIERS.OLLAMA]: new OllamaMessageFormatter(),
+        [PROVIDER_IDENTIFIERS.DEFAULT]: new DefaultMessageFormatter()
     };
 
     /**
@@ -211,7 +212,7 @@ export class MessageFormatterFactory {
      * @returns Message formatter for that provider
      */
     static getFormatter(provider: string): MessageFormatter {
-        return this.formatters[provider] || this.formatters.default;
+        return this.formatters[provider] || this.formatters[PROVIDER_IDENTIFIERS.DEFAULT];
     }
 
     /**