import {
  GA_DISABLE_KEY,
  readConsent,
  trackEmailClick,
  trackSocialClick,
  trackWhatsAppOpen,
} from "./analytics";

/**
 * Testes de caminhos-base de lib/analytics.ts (complemento de analytics.test.ts):
 * modelo de rota de cada página (analyticsPagePath), cada condição que silencia o envio (sendEvent)
 * e a conversão do Google Ads (sendAdsConversion) com e sem etiqueta, com e sem consentimento.
 */

const CONSENT_KEY = "evandro.analytics-consent.v1";
const ADS_LABEL = "NEXT_PUBLIC_GOOGLE_ADS_CONVERSION_LABEL";

beforeEach(() => {
  jest.replaceProperty(process.env, "NODE_ENV", "production");
  localStorage.setItem(CONSENT_KEY, "granted");
  delete window[GA_DISABLE_KEY];
  window.gtag = jest.fn();
  window.history.replaceState({}, "", "/");
});

afterEach(() => {
  jest.restoreAllMocks();
  localStorage.clear();
  delete window.gtag;
  delete process.env[ADS_LABEL];
  window.history.replaceState({}, "", "/");
});

function gtagCalls() {
  return (window.gtag as jest.Mock).mock.calls;
}

describe("analyticsPagePath (via the page_path sent with each event)", () => {
  it.each([
    ["/", "/"],
    ["/servicos", "/servicos"],
    ["/cases", "/cases"],
    ["/curriculo", "/curriculo"],
    ["/privacidade", "/privacidade"],
    ["/ia", "/ia"],
    ["/cases/", "/cases"],
    ["/ia/?utm=x#y", "/ia"],
    ["/servicos/criacao-de-sites", "/servicos/[slug]"],
    ["/servicos/qualquer/coisa/mais", "/servicos/[slug]"],
    ["/cases/sev-modaintima", "/cases/[slug]"],
    ["/cases/ana%40example.com?x=1", "/cases/[slug]"],
    ["/servicos-extra", "/other"],
    ["/cases-extra/abc", "/other"],
    ["/nao-existe", "/other"],
  ])("path: location %s -> page_path %s", (location, expected) => {
    window.history.replaceState({}, "", location);

    trackSocialClick({ network: "linkedin" });

    expect(gtagCalls()).toHaveLength(1);
    expect(gtagCalls()[0][2]).toMatchObject({
      page_path: expected,
      page_location: `https://evandro.dev.br${expected}`,
      page_referrer: "",
    });
  });
});

describe("sendEvent: cada condição que silencia o envio", () => {
  it("path: gtag exists but is not a function -> nothing sent, no conversion, no error", () => {
    process.env[ADS_LABEL] = "abc123";
    window.gtag = "not-a-function" as never;

    expect(() =>
      trackWhatsAppOpen({ service: "S", placement: "p" }),
    ).not.toThrow();
    expect(() => trackEmailClick({ placement: "p" })).not.toThrow();
  });

  it("path: stored consent is an unknown value -> treated as no consent", () => {
    localStorage.setItem(CONSENT_KEY, "yes");

    trackSocialClick({ network: "linkedin" });

    expect(readConsent()).toBeNull();
    expect(gtagCalls()).toHaveLength(0);
  });

  it("path: storage throws -> readConsent returns null and nothing is sent", () => {
    jest.spyOn(Storage.prototype, "getItem").mockImplementation(() => {
      throw new Error("storage blocked");
    });

    expect(readConsent()).toBeNull();
    trackSocialClick({ network: "linkedin" });

    expect(gtagCalls()).toHaveLength(0);
  });

  it("path: event counted -> one gtag call carrying the static params and the route template", () => {
    window.history.replaceState({}, "", "/cases/sev-modaintima?q=1#x");

    trackEmailClick({ placement: "footer" });

    expect(gtagCalls()).toEqual([
      [
        "event",
        "email_click",
        {
          send_to: "G-QTT9QT0T3S",
          placement: "footer",
          page_path: "/cases/[slug]",
          page_location: "https://evandro.dev.br/cases/[slug]",
          page_referrer: "",
        },
      ],
    ]);
  });
});

describe("sendAdsConversion: etiqueta x consentimento", () => {
  it.each([
    ["is unset", undefined],
    ["is an empty string", ""],
  ])(
    "path: label %s, consent granted -> only the GA4 event goes out",
    (_l, label) => {
      if (label !== undefined) process.env[ADS_LABEL] = label;

      trackWhatsAppOpen({ service: "Contato", placement: "floating" });
      trackEmailClick({ placement: "footer" });

      expect(gtagCalls().map(([, name]) => name)).toEqual([
        "whatsapp_open",
        "email_click",
      ]);
    },
  );

  it("path: label set, consent denied -> nothing at all, not even the conversion", () => {
    process.env[ADS_LABEL] = "abc123";
    localStorage.setItem(CONSENT_KEY, "denied");

    trackWhatsAppOpen({ service: "Contato", placement: "floating" });
    trackEmailClick({ placement: "footer" });

    expect(gtagCalls()).toHaveLength(0);
  });

  it("path: label set, consent granted -> the conversion uses the Ads id and the label", () => {
    process.env[ADS_LABEL] = "xyz-789";

    trackWhatsAppOpen({ service: "Contato", placement: "floating" });

    expect(gtagCalls().map(([, name]) => name)).toEqual([
      "whatsapp_open",
      "conversion",
    ]);
    expect(gtagCalls()[1][2]).toEqual({
      send_to: "AW-18432694647/xyz-789",
    });
  });

  it("path: the conversion call throws -> the click handler still returns normally", () => {
    process.env[ADS_LABEL] = "abc123";
    window.gtag = jest.fn((_command: unknown, name: unknown) => {
      if (name === "conversion") throw new Error("ads blocked");
    });

    expect(() =>
      trackWhatsAppOpen({ service: "Contato", placement: "floating" }),
    ).not.toThrow();
    expect(gtagCalls().map(([, name]) => name)).toEqual([
      "whatsapp_open",
      "conversion",
    ]);
  });

  it("path: gtag disappears right after the event was counted -> the conversion is skipped silently", () => {
    process.env[ADS_LABEL] = "abc123";
    const gtag = jest.fn(() => {
      delete window.gtag;
    });
    window.gtag = gtag;

    expect(() => trackEmailClick({ placement: "footer" })).not.toThrow();
    expect(gtag).toHaveBeenCalledTimes(1);
  });
});