import { describe, expect, it } from "vitest";

import {
  extraRichTextToPlainText,
  applyRichTextStylePatch,
  normalizeExtraRichText,
  richTextContentSignature,
  sanitizeRichTextHtml,
  sanitizeRichTextUrl,
} from "@/lib/rich-text";

describe("rich text sanitization", () => {
  it("keeps supported formatting, colors, and safe links", () => {
    expect(sanitizeRichTextHtml(
      '<p><strong>Good</strong> <span style="color: #ff3b30">news</span> <a href="https://example.com" onclick="bad()">link</a></p>',
    )).toBe(
      '<p><strong>Good</strong> <span style="color: #FF3B30">news</span> <a href="https://example.com" target="_blank" rel="noopener noreferrer">link</a></p>',
    );
  });

  it("normalizes browser-generated RGB text colors to safe hex colors", () => {
    expect(sanitizeRichTextHtml(
      '<p><span style="color: rgb(0, 255, 0);">green</span> <span style="color: rgb(255, 204, 0)">yellow</span></p>',
    )).toBe(
      '<p><span style="color: #00FF00">green</span> <span style="color: #FFCC00">yellow</span></p>',
    );
  });

  it("removes executable markup, unsafe links, and unsupported styles", () => {
    expect(sanitizeRichTextHtml(
      '<script>alert(1)</script><p onclick="bad()">Safe <span style="background:red;color:red">text</span><a href="javascript:bad()">link</a></p>',
    )).toBe("<p>Safe <span>text</span><a>link</a></p>");
    expect(sanitizeRichTextUrl("data:text/html,bad")).toBe("");
  });
});

describe("legacy Extra rich text conversion", () => {
  it("converts stored markup into safe multiline text for cell editing", () => {
    expect(extraRichTextToPlainText(
      "<p><strong>First</strong><br>line</p><p>Second &amp; safe<script>bad()</script></p>",
    )).toBe("First\nline\nSecond & safe");
    expect(normalizeExtraRichText(extraRichTextToPlainText("<p>A<br>B</p>")))
      .toBe("<p>A<br>B</p>");
  });

  it("escapes plain text, preserves newlines, and converts phrase colors", () => {
    expect(normalizeExtraRichText("<unsafe>\nMASSIVE damage", [
      { text: "MASSIVE", color: "#ff0000" },
    ])).toBe(
      '<p>&lt;unsafe&gt;<br><span style="color: #FF0000">MASSIVE</span> damage</p>',
    );
  });

  it("leaves sanitized rich text in rich-text form", () => {
    expect(normalizeExtraRichText('<p><em>Ready</em></p>', [
      { text: "Ready", color: "#ff0000" },
    ])).toBe("<p><em>Ready</em></p>");
  });
});

describe("bulk rich-text styles", () => {
  it("applies a style to every text node without replacing structure or links", () => {
    expect(applyRichTextStylePatch(
      '<p>First <a href="https://example.com">link</a></p><ul><li>Second</li></ul>',
      { bold: true },
    )).toBe(
      '<p><strong>First </strong><a href="https://example.com" target="_blank" rel="noopener noreferrer"><strong>link</strong></a></p><ul><li><strong>Second</strong></li></ul>',
    );
  });

  it("removes only requested styles and applies normalized colors", () => {
    expect(applyRichTextStylePatch(
      '<p><strong>Bold <em>and italic</em></strong></p>',
      { bold: false },
    )).toBe("<p>Bold <em>and italic</em></p>");
    expect(applyRichTextStylePatch("<p>Red</p>", { color: "#00ff00" }))
      .toBe('<p><span style="color: #00FF00">Red</span></p>');
    expect(applyRichTextStylePatch(
      '<p><span style="color: #00FF00">Green</span></p>',
      { color: null },
    )).toBe("<p>Green</p>");
  });

  it("compares content independently from visual formatting", () => {
    expect(richTextContentSignature(
      '<p><strong>Same</strong> <span style="color: #FF0000">text</span></p>',
    )).toBe("<p>Same text</p>");
    expect(richTextContentSignature("<p>Changed text</p>"))
      .not.toBe(richTextContentSignature("<p>Original text</p>"));
  });
});