Can get & return basic information about surveys

src/entities/Post.ts

@@ -160,4 +160,8 @@ export class Post implements PostBuilder {
 	get hasLink() : boolean {
 		return this.kind == PostKind.POST_KIND_WEBLINK;
 	}
+
+	get hasSurvey() : boolean {
+		return this.kind == PostKind.POST_KIND_SURVEY;
+	}
 }

src/entities/Survey.ts

@@ -0,0 +1,35 @@
+/**
+ * Survey information
+ * 
+ * @author Pierre HUBERT
+ */
+
+export interface SurveyChoice {
+	id: number,
+	name: string,
+	count: number
+}
+
+export interface SurveyBuilder {
+	id: number;
+	userID: number;
+	timeCreate: number;
+	postID: number;
+	question: string;
+	choices: SurveyChoice[]
+}
+
+export class Survey implements SurveyBuilder {
+	id: number;	userID: number;
+	timeCreate: number;
+	postID: number;
+	question: string;
+	choices: SurveyChoice[];
+
+	public constructor(info: SurveyBuilder) {
+		for (const key in info) {
+			if (info.hasOwnProperty(key))
+				this[key] = info[key];
+		}
+	}
+}