fix: Add GOOGLE_API_KEY to google provider environment variables

Author: RahulThennarasu

packages/core/lib/utils.ts

@@ -399,7 +399,7 @@ export const providerEnvVarMap: Partial<
 > = {
   openai: "OPENAI_API_KEY",
   anthropic: "ANTHROPIC_API_KEY",
-  google: ["GEMINI_API_KEY", "GOOGLE_GENERATIVE_AI_API_KEY"],
+  google: ["GEMINI_API_KEY", "GOOGLE_GENERATIVE_AI_API_KEY", "GOOGLE_API_KEY"],
   groq: "GROQ_API_KEY",
   cerebras: "CEREBRAS_API_KEY",
   togetherai: "TOGETHER_AI_API_KEY",

packages/core/tests/google-api-key-env.test.ts

@@ -0,0 +1,47 @@
+import { describe, it, expect, beforeEach, afterEach } from "vitest";
+import { loadApiKeyFromEnv } from "../lib/utils";
+
+describe("Google API Key Enviroment Variable", () => {
+    const originalEnv = process.env;
+
+    beforeEach(() => {
+        process.env = { ...originalEnv };
+    });
+
+    afterEach(() => {
+        process.env = originalEnv;
+    });
+
+    it("should read GOOGLE_API_KEY for google provider", () => {
+        process.env.GOOGLE_API_KEY = "test-google-key";
+
+        const apiKey = loadApiKeyFromEnv("google", () => {});
+
+        expect(apiKey).toBe("test-google-key");
+    });
+
+    it("should read GEMINI_API_KEY for google provider", () => {
+        process.env.GEMINI_API_KEY = "test-gemini-key";
+
+        const apiKey = loadApiKeyFromEnv("google", () => {});
+
+        expect(apiKey).toBe("test-gemini-key");
+    });
+
+    it("should read GOOGLE_GENERATIVE_AI_API_KEY for google provider", () => {
+        process.env.GOOGLE_GENERATIVE_AI_API_KEY = "test-gen-ai-key";
+
+        const apiKey = loadApiKeyFromEnv("google", () => {});
+
+        expect(apiKey).toBe("test-gen-ai-key");
+    });
+
+    it("should prioritize GEMINI_API_KEY over GOOGLE_API_KEY", () => {
+        process.env.GEMINI_API_KEY = "gemini-key";
+        process.env.GOOGLE_API_KEY = "google-key";
+
+        const apiKey = loadApiKeyFromEnv("google", () => {});
+
+        expect(apiKey).toBe("gemini-key")
+    });
+});