Front: Api models validation (#245)

* Front: Model: Write Validators

* Front: Plage response validator

* Front: API: Typing 'fetch' return

* Front: Basic Models: Response Handlers

* Front: API: Validate authentication response

* Front: Validate Search History

* Front: Validate Responses of User updates

* Front: On Validation Error, more verbose console error

front/models/Lesson.ts

@@ -1,26 +1,19 @@
-import Skill from './Skill';
-import Model from './Model';
+import { SkillValidator } from './Skill';
+import { ModelValidator } from './Model';
+import * as yup from 'yup';
+
+export const LessonValidator = yup
+	.object({
+		name: yup.string().required(),
+		description: yup.string().required(),
+		requiredLevel: yup.number().required(),
+		mainSkill: SkillValidator.required(),
+	})
+	.concat(ModelValidator);
 
 /**
  * A Lesson is an exercice that the user can try to practice a skill
  */
-interface Lesson extends Model {
-	/**
-	 * The title of the lesson
-	 */
-	title: string;
-	/**
-	 * Short description of the lesson
-	 */
-	description: string;
-	/**
-	 * The minimum level required for the user to access this lesson
-	 */
-	requiredLevel: number;
-	/**
-	 * The main skill learnt in this lesson
-	 */
-	mainSkill: Skill;
-}
+type Lesson = yup.InferType<typeof LessonValidator>;
 
 export default Lesson;