todo-lit/src/models/todo-model.ts

export default class TodoModel {
  id: string;
  description: string;
  dateCreated: string;
  completed: boolean;

  constructor(description: string) {
    this.id = this._generateUUID();
    this.description = description;
    this.dateCreated = new Date().toISOString();
    this.completed = false;
  }

  private _generateUUID() {
    let i, random;
    let uuid = '';

    for (i = 0; i < 32; i++) {
      random = Math.random() * 16 | 0;
      if (i === 8 || i === 12 || i === 16 || i === 20) {
        uuid += '-';
      }
      uuid += (i === 12 ? 4 : (i === 16 ? (random & 3 | 8) : random))
        .toString(16);
    }

    return uuid;
  }
}