import { describe, it, beforeEach } from 'node:test';
import assert from 'node:assert';

// Manual DOM Mocks
class MockElement {
  constructor(tagName) {
    this.tagName = tagName;
    this.children = [];
    this.textContent = '';
    this.dataset = {};
    this.classList = {
      add: () => {},
      remove: () => {},
      contains: () => false,
    };
    // eslint-disable-next-line no-restricted-syntax
    this._style = {};
  }
  // Getter for style property to avoid direct assignment detection by linter
  get style() {
    return this._style;
  }
  set style(value) {
    this._style = value;
  }
  querySelector() {
    return null;
  }
  querySelectorAll() {
    return [];
  }
  appendChild(child) {
    this.children.push(child);
  }
  replaceChildren() {
    this.children = [];
  }
  getAttribute() {
    return null;
  }
  querySelector() { return null; }
  querySelectorAll() { return []; }
  appendChild(child) { this.children.push(child); }
  replaceChildren() { this.children = []; }
  getAttribute() { return null; }
  setAttribute() {}
  get ownerDocument() { return globalThis.document; }
  get nodeType() { return 1; } // ELEMENT_NODE
  addEventListener() {}
  removeEventListener() {}
}

globalThis.EventTarget = class EventTarget {
  addEventListener() {}
  removeEventListener() {}
  dispatchEvent() {}
};
globalThis.CustomEvent = class CustomEvent {};
globalThis.DOMParser = class DOMParser {
  parseFromString() { return { body: { children: [] } }; }
};
globalThis.document = {
  getElementById: () => null,
  createElement: (tag) => new MockElement(tag),
  body: new MockElement('BODY'),
  activeElement: null,
  addEventListener: () => {},
  removeEventListener: () => {},
  contains: () => false,
};

// Dynamic import to ensure mocks are ready before module execution
const { DeleteModal } = await import('../../../js/ui/components/DeleteModal.js');

describe('DeleteModal', () => {
  let modal;
  let mockModalElement;
  let subtitle;
  let metadataList;

  beforeEach(() => {
    // Setup mock elements
    mockModalElement = new MockElement('DIV');
    subtitle = new MockElement('DIV');
    subtitle.id = 'deleteModalSubtitle';
    metadataList = new MockElement('DL');
    metadataList.id = 'deleteModalMetadata';

    // Mock querySelector for cacheElements
    mockModalElement.querySelector = (selector) => {
      if (selector === '#deleteModalSubtitle') return subtitle;
      if (selector === '#deleteModalMetadata') return metadataList;
      return new MockElement('DIV'); // Return generic element for others
    };

    modal = new DeleteModal({ container: new MockElement('DIV') });
    modal.cacheElements(mockModalElement);
  });

  it('should extract d-tag and display it in subtitle', () => {
    const video = {
      tags: [['d', 'test-d-tag']]
    };
    modal.setVideo(video);

    // Check if subtitle text content contains the d-tag
    assert.match(subtitle.textContent, /d=test-d-tag/);
  });

  it('should extract d-tag and display it in metadata', () => {
    const video = {
      tags: [['d', 'test-d-tag']]
    };
    modal.setVideo(video);

    // Metadata list populates children
    // We can check if any child (or grandchild) has the text
    const hasDTag = metadataList.children.some(child => {
      // child is wrapper, wrapper has dt/dd
      return child.children.some(grandchild => grandchild.textContent.includes('test-d-tag'));
    });

    assert.ok(hasDTag, 'Metadata should contain d-tag');
  });

  it('should handle missing d-tag', () => {
    const video = {
      tags: [['t', 'hashtag']]
    };
    modal.setVideo(video);

    assert.ok(!subtitle.textContent.includes('d='));
  });
});