From c19ab3d58786c2dc4fdcf4814b5ce686262c6ce3 Mon Sep 17 00:00:00 2001
From: Pierre <pierre@hubert.fr>
Date: Thu, 18 Jan 2018 06:42:24 +0100
Subject: [PATCH] Response to a survey can be saved.

---
 RestControllers/surveysController.php | 33 ++++++++++++++++++++++++
 classes/components/survey.php         | 36 +++++++++++++++++++++++++++
 2 files changed, 69 insertions(+)

diff --git a/RestControllers/surveysController.php b/RestControllers/surveysController.php
index f84c2f0..be79075 100644
--- a/RestControllers/surveysController.php
+++ b/RestControllers/surveysController.php
@@ -30,6 +30,39 @@ class surveysController {
 
 	}
 
+	/**
+	 * Send a response to a survey
+	 * 
+	 * @url POST /surveys/send_response
+	 */
+	public function send_response(){
+
+		user_login_required();
+
+		//Get the ID of the survey
+		$surveyID = $this->getSurveyIDFromPostID("postID");
+
+		//Get the ID of the response of the user
+		if(!isset($_POST['choiceID']))
+			Rest_fatal_error(401, "Please specify the ID of your choice in your request!");
+		$choiceID = (int) $_POST['choiceID'];
+
+		//Try to cancel the user's previous response to the survey
+		if(!components()->survey->cancel_response($surveyID, userID))
+			Rest_fatal_error(500, "Couldn't cancel user previous response to the survey !");
+		
+		//Check if the user choice exists or not
+		if(!components()->survey->choice_exists($surveyID, $choiceID))
+			Rest_fatal_error(404, "Specified response does not exists!");
+		
+		//Save the answer
+		if(!components()->survey->send_response(userID, $surveyID, $choiceID))
+			Rest_fatal_error(500, "An error occured while trying to save response to the survey!");
+		
+		//Success
+		return array("success" => "User response has been saved!");
+	}
+
 	/**
 	 * Get the ID of a survey from a $_POST ID
 	 * 
diff --git a/classes/components/survey.php b/classes/components/survey.php
index 7ac5648..663a27d 100644
--- a/classes/components/survey.php
+++ b/classes/components/survey.php
@@ -106,6 +106,20 @@ class Survey {
 		return CS::get()->db->count($this::SURVEY_INFOS_TABLE, "WHERE ID_texte = ?", array($postID)) > 0;
 	}
 
+	/**
+	 * Check wether a choice exists and is attached to a survey
+	 * 
+	 * @param int $surveyID the ID of the survey
+	 * @param int $choiceID The ID of the choice to check
+	 * @return bool TRUE if a choice exists and is valid / FALSE else
+	 */
+	public function choice_exists(int $surveyID, int $choiceID) : bool {
+		return CS::get()->db->count(
+			$this::SURVEY_CHOICES_TABLE, 
+			"WHERE ID_sondage = ? AND ID = ?", 
+			array($surveyID, $choiceID)) > 0;
+	}
+
 	/**
 	 * Get the ID of a survey associated to a post
 	 * 
@@ -128,6 +142,28 @@ class Survey {
 		return $results[0]["ID"];
 	}
 
+	/**
+	 * Send a response to a survey
+	 * 
+	 * @param int $userID The ID of the user giving a response to the survey
+	 * @param int $surveyID The ID of the target survey
+	 * @param int $choiceID The ID of the selected choice
+	 * @return bool TRUE for a success / FALSE for a failure
+	 */
+	public function send_response(int $userID, int $surveyID, int $choiceID){
+		
+		//Generate the new data line
+		$data = array(
+			"ID_utilisateurs" => $userID,
+			"ID_sondage" => $surveyID,
+			"ID_sondage_choix" => $choiceID,
+			"date_envoi" => mysql_date()
+		);
+
+		//Try to save response
+		return CS::get()->db->addLine($this::SURVEY_RESPONSE_TABLE, $data);
+	}
+
 	/**
 	 * Cancel the response of a user to a survey
 	 *