feat: add Openrouter support (#75)

* feat: add openrouter support

- Introduce ModelProvider abstraction for LLM service
- Added ModelProviderName enum and ModelProviders mapping to centralize model provider definitions, enhancing maintainability and readability.
- Updated LLMService to utilize the new ModelProviderName for provider identification, improving code clarity.
- Refactored getProviderFromModel method to return ModelProviderName values, streamlining model provider retrieval logic.
- Introduced openrouter support in LLMService, expanding model provider capabilities.

* test: add ModelAdapter tests for unsupported provider handling

- Introduced a new test suite for ModelAdapter to validate error handling for unsupported providers.
- Enhanced existing tests for DummyLLM to ensure comprehensive coverage of LLM functionalities.
- This update improves the robustness of the testing framework and ensures adherence to expected behaviors in the LLM module.

* chore: update package dependencies

- Upgraded versions of several @AI-SDK packages to their latest releases for improved functionality and compatibility.
- Updated the "ai" package from version 4.3 to 4.3.15 to ensure alignment with the latest features and enhancements.
- Added @openrouter/ai-sdk-provider dependency to support new functionalities.

* refactor: update RevenueProjectSchema and handle null values in project data

- Modified RevenueProjectSchema to allow nullable fields for arr, mrr, and normalizedRevenueFor30Days, enhancing data flexibility.
- Updated RevenueDataExecutor to handle null values by converting them to 0, ensuring consistent data structure when fetching project data.
- Added error handling for cases where no project data is returned, improving robustness and user feedback.

* chore: update pnpm-lock.yaml with dependency version changes

- Upgraded several @AI-SDK packages to their latest versions, including '@ai-sdk/anthropic' to 1.2.11, '@ai-sdk/deepseek' to 0.2.14, and '@ai-sdk/openai' to 1.3.22, enhancing functionality and compatibility.
- Added '@openrouter/ai-sdk-provider' version 0.4.5 to support new features.
- Updated the 'ai' package from version 4.3.13 to 4.3.15 for improved performance and stability.

Author: nicky-ru

package.json

@@ -20,18 +20,19 @@
   "author": "",
   "license": "ISC",
   "dependencies": {
-    "@ai-sdk/anthropic": "^1.1.9",
-    "@ai-sdk/deepseek": "^0.1.11",
-    "@ai-sdk/openai": "^1.1.13",
+    "@ai-sdk/anthropic": "^1.2.11",
+    "@ai-sdk/deepseek": "^0.2.14",
+    "@ai-sdk/openai": "^1.3.22",
     "@dimo-network/data-sdk": "1.2.3",
     "@langchain/community": "^0.3.32",
     "@langchain/core": "^0.3.40",
     "@langchain/openai": "^0.4.4",
     "@langchain/qdrant": "^0.1.1",
     "@modelcontextprotocol/sdk": "^1.10.2",
+    "@openrouter/ai-sdk-provider": "^0.4.5",
     "@qdrant/js-client-rest": "^1.13.0",
     "@upstash/redis": "^1.34.4",
-    "ai": "^4.3",
+    "ai": "^4.3.15",
     "axios": "^1.7.9",
     "chalk": "^4.1.2",
     "dotenv": "^16.4.7",

pnpm-lock.yaml

@@ -1,6 +1,6 @@
 import { describe, it, expect } from 'vitest';
 
-import { DummyLLM } from '../llm/llm';
+import { DummyLLM, ModelAdapter } from '../llm/llm';
 
 describe('LLM', () => {
   describe('DummyLLM', () => {
@@ -10,4 +10,12 @@ describe('LLM', () => {
       expect(response).toBe(`{"tool":null,"tool_input":"Dummy LLM Response to the user's request."}`);
     });
   });
+
+  describe('ModelAdapter', () => {
+    it('should throw error for unsupported provider', () => {
+      expect(() => {
+        new ModelAdapter({ provider: 'nonexistent' as any, model: 'some-model' });
+      }).toThrow('Unsupported provider: nonexistent');
+    });
+  });
 });

src/__tests__/llm.test.ts

@@ -46,6 +46,16 @@ describe('LLMService', () => {
       expect((service.llm as ModelAdapter).model.modelId).toBe('deepseek-reasoner');
     });
 
+    it('should initialize with OpenRouter models', () => {
+      const service = new LLMService({
+        fastLLMModel: 'mistralai/mistral-large',
+        LLMModel: 'anthropic/claude-3-opus',
+      });
+
+      expect((service.fastllm as ModelAdapter).model.modelId).toBe('mistralai/mistral-large');
+      expect((service.llm as ModelAdapter).model.modelId).toBe('anthropic/claude-3-opus');
+    });
+
     it('should mix different providers based on models', () => {
       const service = new LLMService({
         fastLLMModel: 'claude-3-5-haiku-latest',