import { describe, it, expect } from "vitest"
import { formatResult, type FetchResult } from "../src/fetch.js"

describe("formatResult", () => {
  it("formats a full result with all metadata", () => {
    const result: FetchResult = {
      url: "https://example.com/article",
      title: "Test Article",
      author: "Jane Doe",
      description: "A test article about testing",
      domain: "example.com",
      published: "2026-01-15",
      wordCount: 500,
      content: "This is the article body.",
    }

    const output = formatResult(result)
    expect(output).toContain("# Test Article")
    expect(output).toContain("**Author:** Jane Doe")
    expect(output).toContain("**Domain:** example.com")
    expect(output).toContain("**Published:** 2026-01-15")
    expect(output).toContain("**Words:** 500")
    expect(output).toContain("> A test article about testing")
    expect(output).toContain("---")
    expect(output).toContain("This is the article body.")
  })

  it("handles minimal result with no metadata", () => {
    const result: FetchResult = {
      url: "https://example.com",
      title: null,
      author: null,
      description: null,
      domain: null,
      published: null,
      wordCount: null,
      content: "Just content.",
    }

    const output = formatResult(result)
    expect(output).not.toContain("#")
    expect(output).not.toContain("**Author:**")
    expect(output).not.toContain("---")
    expect(output).toContain("Just content.")
  })

  it("handles empty content", () => {
    const result: FetchResult = {
      url: "https://example.com",
      title: "Empty Page",
      author: null,
      description: null,
      domain: null,
      published: null,
      wordCount: null,
      content: "",
    }

    const output = formatResult(result)
    expect(output).toContain("# Empty Page")
    expect(output).toContain("(no content extracted)")
  })

  it("includes only available metadata fields", () => {
    const result: FetchResult = {
      url: "https://example.com",
      title: "Partial",
      author: "Author Only",
      description: null,
      domain: null,
      published: null,
      wordCount: 100,
      content: "Body text.",
    }

    const output = formatResult(result)
    expect(output).toContain("**Author:** Author Only")
    expect(output).toContain("**Words:** 100")
    expect(output).not.toContain("**Domain:**")
    expect(output).not.toContain("**Published:**")
  })
})