/**
 * Unit tests for contactHtml (formatPhoneDisplay, buildContactLinksHtml).
 */

import { describe, it, expect } from "vitest";
import { formatPhoneDisplay, buildContactLinksHtml } from "./contactHtml.js";

describe("formatPhoneDisplay", () => {
  it("formats 11-digit number starting with 7", () => {
    expect(formatPhoneDisplay("79146522209")).toBe("+7 914 652-22-09");
    expect(formatPhoneDisplay("+79146522209")).toBe("+7 914 652-22-09");
  });

  it("formats 11-digit number starting with 8", () => {
    expect(formatPhoneDisplay("89146522209")).toBe("+7 914 652-22-09");
  });

  it("formats 10-digit number as Russian", () => {
    expect(formatPhoneDisplay("9146522209")).toBe("+7 914 652-22-09");
  });

  it("returns empty string for null or empty", () => {
    expect(formatPhoneDisplay(null)).toBe("");
    expect(formatPhoneDisplay("")).toBe("");
    expect(formatPhoneDisplay("  ")).toBe("");
  });

  it("strips non-digits before formatting", () => {
    expect(formatPhoneDisplay("+7 (914) 652-22-09")).toBe("+7 914 652-22-09");
  });

  it("returns digits as-is for non-10/11 length", () => {
    expect(formatPhoneDisplay("123")).toBe("123");
    expect(formatPhoneDisplay("12345678901")).toBe("12345678901");
  });
});

describe("buildContactLinksHtml", () => {
  const baseOptions = { classPrefix: "test-contact", showLabels: true, separator: " " };

  it("returns empty string when phone and username are missing", () => {
    expect(buildContactLinksHtml("en", null, null, baseOptions)).toBe("");
    expect(buildContactLinksHtml("en", undefined, undefined, baseOptions)).toBe("");
    expect(buildContactLinksHtml("en", "", "", baseOptions)).toBe("");
    expect(buildContactLinksHtml("en", "  ", "  ", baseOptions)).toBe("");
  });

  it("renders phone only with label and tel: link", () => {
    const html = buildContactLinksHtml("en", "+79991234567", null, baseOptions);
    expect(html).toContain("test-contact-row");
    expect(html).toContain('href="tel:');
    expect(html).toContain("+79991234567");
    expect(html).toContain("Phone");
    expect(html).not.toContain("t.me");
  });

  it("displays phone formatted for Russian numbers", () => {
    const html = buildContactLinksHtml("en", "79146522209", null, baseOptions);
    expect(html).toContain("+7 914 652-22-09");
    expect(html).toContain('href="tel:79146522209"');
  });

  it("renders username only with label and t.me link", () => {
    const html = buildContactLinksHtml("en", null, "alice_dev", baseOptions);
    expect(html).toContain("test-contact-row");
    expect(html).toContain("https://t.me/");
    expect(html).toContain("alice_dev");
    expect(html).toContain("@alice_dev");
    expect(html).toContain("Telegram");
    expect(html).not.toContain("tel:");
  });

  it("renders both phone and username with labels", () => {
    const html = buildContactLinksHtml("en", "+79001112233", "bob", baseOptions);
    expect(html).toContain("test-contact-row");
    expect(html).toContain("tel:");
    expect(html).toContain("+79001112233");
    expect(html).toContain("+7 900 111-22-33");
    expect(html).toContain("t.me");
    expect(html).toContain("@bob");
    expect(html).toContain("Phone");
    expect(html).toContain("Telegram");
  });

  it("strips leading @ from username and displays with @", () => {
    const html = buildContactLinksHtml("en", null, "@alice", baseOptions);
    expect(html).toContain("https://t.me/alice");
    expect(html).toContain("@alice");
    expect(html).not.toContain("@@");
  });

  it("handles multiple leading @ in username", () => {
    const html = buildContactLinksHtml("en", null, "@@@user", baseOptions);
    expect(html).toContain("https://t.me/user");
    expect(html).toContain("@user");
  });

  it("escapes special characters in phone href; display uses formatted digits only", () => {
    const html = buildContactLinksHtml("en", '+7 999 "1" <2>', null, baseOptions);
    expect(html).toContain("&quot;");
    expect(html).toContain("&lt;");
    expect(html).toContain("tel:");
    expect(html).toContain("799912");
    expect(html).not.toContain("<2>");
    expect(html).not.toContain('"1"');
  });

  it("uses custom separator when showLabels is false", () => {
    const html = buildContactLinksHtml("en", "+7999", "u1", {
      classPrefix: "duty-contact",
      showLabels: false,
      separator: " · "
    });
    expect(html).toContain(" · ");
    expect(html).not.toContain("Phone");
    expect(html).not.toContain("Telegram");
    expect(html).toContain("duty-contact-row");
    expect(html).toContain("duty-contact-link");
  });

  it("uses Russian labels when lang is ru", () => {
    const html = buildContactLinksHtml("ru", "+7999", null, baseOptions);
    expect(html).toContain("Телефон");
    const htmlTg = buildContactLinksHtml("ru", null, "u", baseOptions);
    expect(htmlTg).toContain("Telegram");
  });

  it("uses default showLabels true and separator space when options omit them", () => {
    const html = buildContactLinksHtml("en", "+7999", "u", {
      classPrefix: "minimal",
    });
    expect(html).toContain("Phone");
    expect(html).toContain("Telegram");
    expect(html).toContain("minimal-row");
    expect(html).not.toContain(" · ");
  });

  describe("layout: block", () => {
    it("renders phone as block with icon and formatted number", () => {
      const html = buildContactLinksHtml("en", "79146522209", null, {
        classPrefix: "current-duty-contact",
        layout: "block",
      });
      expect(html).toContain("current-duty-contact-row--blocks");
      expect(html).toContain("current-duty-contact-block");
      expect(html).toContain("current-duty-contact-block--phone");
      expect(html).toContain("+7 914 652-22-09");
      expect(html).toContain("tel:");
      expect(html).toContain("<svg");
      expect(html).not.toContain("Phone");
    });

    it("renders telegram as block with icon and @username", () => {
      const html = buildContactLinksHtml("en", null, "alice_dev", {
        classPrefix: "current-duty-contact",
        layout: "block",
      });
      expect(html).toContain("current-duty-contact-block--telegram");
      expect(html).toContain("https://t.me/");
      expect(html).toContain("@alice_dev");
      expect(html).toContain("<svg");
      expect(html).not.toContain("Telegram");
    });

    it("renders both phone and telegram as stacked blocks", () => {
      const html = buildContactLinksHtml("en", "+79001112233", "bob", {
        classPrefix: "current-duty-contact",
        layout: "block",
      });
      expect(html).toContain("current-duty-contact-block--phone");
      expect(html).toContain("current-duty-contact-block--telegram");
      expect(html).toContain("+7 900 111-22-33");
      expect(html).toContain("@bob");
    });
  });
});