server/contentGenerator.test.ts

import { describe, it, expect, vi, beforeEach } from "vitest";
import { generateMarketingContent } from "./contentGenerator";

// Mock the invokeLLM function
vi.mock("./_core/llm", () => ({
  invokeLLM: vi.fn(),
}));

describe("contentGenerator", () => {
  beforeEach(() => {
    vi.clearAllMocks();
  });

  it("should generate sales copy with required fields", async () => {
    const { invokeLLM } = await import("./_core/llm");
    
    (invokeLLM as any).mockResolvedValue({
      choices: [
        {
          message: {
            content:
              "Introducing the Ultimate Product! Transform your life with our revolutionary solution. Limited time offer - get 50% off today!",
          },
        },
      ],
    });

    const result = await generateMarketingContent({
      contentType: "sales_copy",
      productName: "Amazing Widget",
      productDescription: "A revolutionary product that changes everything",
      targetAudience: "Tech enthusiasts",
      tone: "Energetic",
    });

    expect(result.content).toBeTruthy();
    expect(result.prompt).toContain("Amazing Widget");
    expect(result.prompt).toContain("Tech enthusiasts");
  });

  it("should generate product description", async () => {
    const { invokeLLM } = await import("./_core/llm");
    
    (invokeLLM as any).mockResolvedValue({
      choices: [
        {
          message: {
            content:
              "The Amazing Widget is a state-of-the-art device designed for modern consumers. Features include durability, ease of use, and exceptional performance.",
          },
        },
      ],
    });

    const result = await generateMarketingContent({
      contentType: "product_description",
      productName: "Amazing Widget",
      keyFeatures: "Durable, Easy to use, High performance",
    });

    expect(result.content).toContain("Amazing Widget");
    expect(result.prompt).toContain("product description");
  });

  it("should generate ad text", async () => {
    const { invokeLLM } = await import("./_core/llm");
    
    (invokeLLM as any).mockResolvedValue({
      choices: [
        {
          message: {
            content:
              "Headline: Transform Your Life Today\nBody: Discover the power of our innovative solution. Click now for exclusive savings!",
          },
        },
      ],
    });

    const result = await generateMarketingContent({
      contentType: "ad_text",
      productName: "Life Transformer Pro",
      targetAudience: "Busy professionals",
    });

    expect(result.content).toBeTruthy();
    expect(result.prompt).toContain("ad copy");
  });

  it("should generate email template", async () => {
    const { invokeLLM } = await import("./_core/llm");
    
    (invokeLLM as any).mockResolvedValue({
      choices: [
        {
          message: {
            content:
              "Subject: Exclusive Offer Just for You!\n\nDear Valued Customer,\n\nWe're excited to introduce our latest product...\n\nBest regards,\nThe Team",
          },
        },
      ],
    });

    const result = await generateMarketingContent({
      contentType: "email_template",
      productName: "Premium Service",
      tone: "Professional",
    });

    expect(result.content).toContain("Subject:");
    expect(result.prompt).toContain("email template");
  });

  it("should handle errors gracefully", async () => {
    const { invokeLLM } = await import("./_core/llm");
    
    (invokeLLM as any).mockRejectedValue(new Error("API Error"));

    await expect(
      generateMarketingContent({
        contentType: "sales_copy",
        productName: "Test Product",
      })
    ).rejects.toThrow("Failed to generate marketing content");
  });

  it("should include all optional parameters in prompt", async () => {
    const { invokeLLM } = await import("./_core/llm");
    
    (invokeLLM as any).mockResolvedValue({
      choices: [
        {
          message: {
            content: "Generated content",
          },
        },
      ],
    });

    const result = await generateMarketingContent({
      contentType: "sales_copy",
      productName: "Premium Widget",
      productDescription: "High-quality widget",
      targetAudience: "Luxury buyers",
      tone: "Sophisticated",
      keyFeatures: "Premium, Durable, Elegant",
    });

    expect(result.prompt).toContain("Premium Widget");
    expect(result.prompt).toContain("High-quality widget");
    expect(result.prompt).toContain("Luxury buyers");
    expect(result.prompt).toContain("Sophisticated");
    expect(result.prompt).toContain("Premium, Durable, Elegant");
  });
});