import { describe, it, expect } from "vitest";
import { normalizeUrl, resolveHref } from "../src/utils/url";

describe("normalizeUrl", () => {
  it("removes utm_* parameters", () => {
    const url = "https://example.com/page?utm_source=google&utm_medium=campaign&id=42";
    expect(normalizeUrl(url)).toBe("https://example.com/page?id=42");
  });

  it("removes fbclid, gclid, igshid, mc_cid, mc_eid, mkt_tok", () => {
    const url = "https://example.com/page?fbclid=abc&gclid=def&igshid=ghi&mc_cid=jkl&mc_eid=mno&mkt_tok=pqr&id=1";
    expect(normalizeUrl(url)).toBe("https://example.com/page?id=1");
  });

  it("removes hash fragment", () => {
    const url = "https://example.com/page#section";
    expect(normalizeUrl(url)).toBe("https://example.com/page");
  });

  it("preserves path case", () => {
    const url = "https://example.com/Path/To/Page";
    expect(normalizeUrl(url)).toBe("https://example.com/Path/To/Page");
  });

  it("preserves non-tracking query params", () => {
    const url = "https://example.com/search?q=test&page=2&lang=en";
    expect(normalizeUrl(url)).toBe("https://example.com/search?q=test&page=2&lang=en");
  });

  it("handles URL with no query params", () => {
    const url = "https://example.com/page";
    expect(normalizeUrl(url)).toBe("https://example.com/page");
  });

  it("handles invalid input by returning trimmed input", () => {
    expect(normalizeUrl("not-a-url")).toBe("not-a-url");
    expect(normalizeUrl("")).toBe("");
  });

  it("handles whitespace-only input", () => {
    expect(normalizeUrl("   ")).toBe("");
  });

  it("handles relative URL with baseUrl", () => {
    const result = normalizeUrl("/path/to/page", "https://example.com");
    expect(result).toBe("https://example.com/path/to/page");
  });

  it("handles relative URL with baseUrl and tracking params", () => {
    const result = normalizeUrl("/page?utm_source=test&id=1", "https://example.com");
    expect(result).toBe("https://example.com/page?id=1");
  });

  it("normalizes multiple utm params", () => {
    const url = "https://example.com/page?utm_source=a&utm_medium=b&utm_campaign=c&utm_term=d&utm_content=e&id=1";
    expect(normalizeUrl(url)).toBe("https://example.com/page?id=1");
  });
});

describe("resolveHref", () => {
  it("resolves relative URLs against baseUrl", () => {
    const result = resolveHref("/about", "https://example.com");
    expect(result).toBe("https://example.com/about");
  });

  it("resolves relative path with ../", () => {
    const result = resolveHref("../contact", "https://example.com/about/team");
    expect(result).toBe("https://example.com/contact");
  });

  it("returns null for invalid href", () => {
    // When baseUrl is also invalid, URL constructor throws
    const result = resolveHref("not-a-valid-url", "not-a-valid-base");
    expect(result).toBeNull();
  });

  it("normalizes tracking params from resolved URL", () => {
    const result = resolveHref("/page?utm_source=test", "https://example.com");
    expect(result).toBe("https://example.com/page");
  });

  it("handles absolute URL href", () => {
    const result = resolveHref("https://other.com/page", "https://example.com");
    expect(result).toBe("https://other.com/page");
  });

  it("handles empty href", () => {
    const result = resolveHref("", "https://example.com");
    // Empty string resolves to the base URL
    expect(result).toBe("https://example.com/");
  });
});

import { describe, it, expect } from "vitest";
import { normalizeUrl, resolveHref } from "../src/utils/url";

describe("normalizeUrl", () => {
  it("removes utm_* parameters", () => {
    const url = "https://example.com/page?utm_source=google&utm_medium=campaign&id=42";
    expect(normalizeUrl(url)).toBe("https://example.com/page?id=42");
  });

  it("removes fbclid, gclid, igshid, mc_cid, mc_eid, mkt_tok", () => {
    const url = "https://example.com/page?fbclid=abc&gclid=def&igshid=ghi&mc_cid=jkl&mc_eid=mno&mkt_tok=pqr&id=1";
    expect(normalizeUrl(url)).toBe("https://example.com/page?id=1");
  });

  it("removes hash fragment", () => {
    const url = "https://example.com/page#section";
    expect(normalizeUrl(url)).toBe("https://example.com/page");
  });

  it("preserves path case", () => {
    const url = "https://example.com/Path/To/Page";
    expect(normalizeUrl(url)).toBe("https://example.com/Path/To/Page");
  });

  it("preserves non-tracking query params", () => {
    const url = "https://example.com/search?q=test&page=2&lang=en";
    expect(normalizeUrl(url)).toBe("https://example.com/search?q=test&page=2&lang=en");
  });

  it("handles URL with no query params", () => {
    const url = "https://example.com/page";
    expect(normalizeUrl(url)).toBe("https://example.com/page");
  });

  it("handles invalid input by returning trimmed input", () => {
    expect(normalizeUrl("not-a-url")).toBe("not-a-url");
    expect(normalizeUrl("")).toBe("");
  });

  it("handles whitespace-only input", () => {
    expect(normalizeUrl("   ")).toBe("");
  });

  it("handles relative URL with baseUrl", () => {
    const result = normalizeUrl("/path/to/page", "https://example.com");
    expect(result).toBe("https://example.com/path/to/page");
  });

  it("handles relative URL with baseUrl and tracking params", () => {
    const result = normalizeUrl("/page?utm_source=test&id=1", "https://example.com");
    expect(result).toBe("https://example.com/page?id=1");
  });

  it("normalizes multiple utm params", () => {
    const url = "https://example.com/page?utm_source=a&utm_medium=b&utm_campaign=c&utm_term=d&utm_content=e&id=1";
    expect(normalizeUrl(url)).toBe("https://example.com/page?id=1");
  });
});

describe("resolveHref", () => {
  it("resolves relative URLs against baseUrl", () => {
    const result = resolveHref("/about", "https://example.com");
    expect(result).toBe("https://example.com/about");
  });

  it("resolves relative path with ../", () => {
    const result = resolveHref("../contact", "https://example.com/about/team");
    expect(result).toBe("https://example.com/contact");
  });

  it("returns null for invalid href", () => {
    // When baseUrl is also invalid, URL constructor throws
    const result = resolveHref("not-a-valid-url", "not-a-valid-base");
    expect(result).toBeNull();
  });

  it("normalizes tracking params from resolved URL", () => {
    const result = resolveHref("/page?utm_source=test", "https://example.com");
    expect(result).toBe("https://example.com/page");
  });

  it("handles absolute URL href", () => {
    const result = resolveHref("https://other.com/page", "https://example.com");
    expect(result).toBe("https://other.com/page");
  });

  it("handles empty href", () => {
    const result = resolveHref("", "https://example.com");
    // Empty string resolves to the base URL
    expect(result).toBe("https://example.com/");
  });
});