Can respond to survey

src/controllers/Routes.ts

@@ -14,6 +14,7 @@ import { MoviesController } from "./MoviesController";
 import { PostsController } from "./PostsController";
 import { CommentsController } from "./CommentsController";
 import { LikesController } from "./LikesController";
+import { SurveyController } from "./SurveyController";
 
 /**
  * Controllers routes
@@ -221,6 +222,10 @@ export const Routes : Route[] = [
 	{path: "/likes/update", cb: (h) => LikesController.Update(h)},
 
 
+	// Surveys controller
+	{path: "/surveys/send_response", cb: (h) => SurveyController.SendResponse(h)},
+
+
 	// Notifications controller
 	{path: "/notifications/count_unread", cb: (h) => NotificationsController.CountUnread(h)},
 

src/controllers/SurveyController.ts

@@ -10,6 +10,25 @@ import { SurveyHelper } from "../helpers/SurveyHelper";
 
 export class SurveyController {
 
+	/**
+	 * Send the response to a survey to the server
+	 * 
+	 * @param h Request handler
+	 */
+	public static async SendResponse(h: RequestHandler) {
+		const surveyID = await this.PostSurveyIDFromPostID(h, "postID");
+		const choiceID = h.postInt("choiceID");
+
+		await SurveyHelper.CancelResponse(h.getUserId(), surveyID);
+
+		if(!await SurveyHelper.ChoiceExists(surveyID, choiceID))
+			h.error(404, "Choice not found for this survey!");
+		
+		await SurveyHelper.SendResponse(h.getUserId(), surveyID, choiceID);
+
+		h.success();
+	}
+
 
 	/**
 	 * Turn a survey into an API entry
@@ -36,6 +55,18 @@ export class SurveyController {
 		return data;
 	}
 
+	/**
+	 * Get the ID of a survey from a POST id
+	 * 
+	 * @param h Request handler
+	 * @param field The name of the POST field containing the
+	 * POST id
+	 */
+	private static async PostSurveyIDFromPostID(h: RequestHandler, field: string) : Promise<number> {
+		const postID = await h.postPostIDWithAccess(field);
+		return await SurveyHelper.GetID(postID);
+	}
+
 	/**
 	 * Turn a survey choice into an API entry
 	 * 

src/helpers/SurveyHelper.ts

@@ -73,7 +73,7 @@ export class SurveyHelper {
 	 * 
 	 * @param postID Target post ID
 	 */
-	private static async GetID(postID: number) : Promise<number> {
+	public static async GetID(postID: number) : Promise<number> {
 		const info = await DatabaseHelper.QueryRow({
 			table: SURVEY_INFO_TABLE,
 			where: {
@@ -88,6 +88,51 @@ export class SurveyHelper {
 		return info.ID;
 	}
 
+	/**
+	 * Cancel the response of a user to a survey
+	 * 
+	 * @param userID Target user ID
+	 * @param surveyID Target survey
+	 */
+	public static async CancelResponse(userID: number, surveyID: number) {
+		await DatabaseHelper.DeleteRows(SURVEY_RESPONSE_TABLE, {
+			ID_sondage: surveyID,
+			ID_utilisateurs: userID
+		});
+	}
+
+	/**
+	 * Check out whether a choice for the survey exists or not
+	 * 
+	 * @param surveyID Target survey ID
+	 * @param choiceID Target choice ID
+	 */
+	public static async ChoiceExists(surveyID: number, choiceID: number) : Promise<boolean> {
+		return await DatabaseHelper.Count({
+			table: SURVEY_CHOICES_TABLE,
+			where: {
+				ID_sondage: surveyID,
+				ID: choiceID
+			}
+		}) > 0;
+	}
+
+	/**
+	 * Save user response to a survey
+	 * 
+	 * @param userID Target user
+	 * @param surveyID Target survey
+	 * @param choiceID Selected choice
+	 */
+	public static async SendResponse(userID: number, surveyID: number, choiceID: number) {
+		await DatabaseHelper.InsertRow(SURVEY_RESPONSE_TABLE, {
+			ID_utilisateurs: userID,
+			ID_sondage: surveyID,
+			ID_sondage_choix: choiceID,
+			date_envoi: mysql_date()
+		});
+	}
+
 	/**
 	 * Delete the survey associated to a post
 	 *