mirror of
https://github.com/pierre42100/ComunicAPI
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331 lines
8.5 KiB
PHP
331 lines
8.5 KiB
PHP
<?php
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/**
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* Surveys component
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*
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* @author Pierre HUBERT
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*/
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class SurveyComponent {
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/**
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* Survey infos table
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*/
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const SURVEY_INFOS_TABLE = "sondage";
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/**
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* Survey choices table
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*/
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const SURVEY_CHOICES_TABLE = "sondage_choix";
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/**
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* Survey responses table
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*/
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const SURVEY_RESPONSE_TABLE = "sondage_reponse";
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/**
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* Create a new survey
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*
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* @param Survey $survey Information about the survey to create
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* @return bool True for a sucess / False for a failure
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*/
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public function create(Survey $survey) : bool {
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//Create the main survey informations
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$main_info = array(
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"ID_utilisateurs" => $survey->get_userID(),
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"ID_texte" => $survey->get_postID(),
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"date_creation" => mysql_date(),
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"question" => $survey->get_question()
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);
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//Try to create survey main informations table
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if(!CS::get()->db->addLine($this::SURVEY_INFOS_TABLE, $main_info))
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return false;
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//Get the ID of the survey
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$surveyID = CS::get()->db->getLastInsertedID();
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//Check for errors
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if($surveyID < 1)
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return false;
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//Process each answer
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$answers_data = array();
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foreach($survey->get_choices() as $choice){
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$answers_data[] = array(
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"ID_sondage" => $surveyID,
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"date_creation" => mysql_date(),
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"Choix" => $choice->get_name()
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);
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}
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//Insert all the answers
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CS::get()->db->addLines($this::SURVEY_CHOICES_TABLE, $answers_data);
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//Success
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return true;
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}
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/**
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* Get informations about a survey
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*
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* @param int $postID The ID of the post related to the survey
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* @return Survey Informations about the survey / invalid Survey in case of failure
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*/
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public function get_infos(int $postID) : Survey {
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//Get informations about the survey
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$survey = $this->get_survey_info($postID);
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//Check for errors
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if(!$survey->isValid())
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return new Survey();
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//Get the choice of the user
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$survey->set_user_choice(user_signed_in() ? $this->get_user_choice($survey->get_id(), userID) : 0);
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//Get the choices of the survey
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$survey->set_choices($this->get_survey_choices($survey->get_id()));
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return $survey;
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}
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/**
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* Check wether there is a survey associated to a post
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*
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* @param int $postID The ID of the post to check
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* @return bool TRUE if a survey exists / FALSE else
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*/
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public function exists(int $postID) : bool {
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return CS::get()->db->count($this::SURVEY_INFOS_TABLE, "WHERE ID_texte = ?", array($postID)) > 0;
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}
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/**
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* Check wether a choice exists and is attached to a survey
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*
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* @param int $surveyID the ID of the survey
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* @param int $choiceID The ID of the choice to check
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* @return bool TRUE if a choice exists and is valid / FALSE else
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*/
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public function choice_exists(int $surveyID, int $choiceID) : bool {
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return CS::get()->db->count(
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$this::SURVEY_CHOICES_TABLE,
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"WHERE ID_sondage = ? AND ID = ?",
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array($surveyID, $choiceID)) > 0;
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}
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/**
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* Get the ID of a survey associated to a post
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*
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* @param int $postID The ID of the post
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* @return int The ID of the associated survey / 0 if none was found
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*/
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public function get_id(int $postID) : int {
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//Perform a request on the database
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$tableName = $this::SURVEY_INFOS_TABLE;
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$conditions = "WHERE ID_texte = ?";
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$values = array($postID);
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$fields = array("ID");
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$results = CS::get()->db->select($tableName, $conditions, $values, $fields);
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//Check for results
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if(count($results) == 0)
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return 0;
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return $results[0]["ID"];
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}
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/**
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* Send a response to a survey
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*
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* @param int $userID The ID of the user giving a response to the survey
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* @param int $surveyID The ID of the target survey
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* @param int $choiceID The ID of the selected choice
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* @return bool TRUE for a success / FALSE for a failure
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*/
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public function send_response(int $userID, int $surveyID, int $choiceID){
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//Generate the new data line
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$data = array(
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"ID_utilisateurs" => $userID,
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"ID_sondage" => $surveyID,
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"ID_sondage_choix" => $choiceID,
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"date_envoi" => mysql_date()
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);
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//Try to save response
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return CS::get()->db->addLine($this::SURVEY_RESPONSE_TABLE, $data);
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}
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/**
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* Cancel the response of a user to a survey
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*
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* @param int $surveyID The ID of the target survey
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* @param int $userID The ID of the user removing his response
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* @return bool FALSE in case of failure / TRUE in case of success
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*/
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public function cancel_response(int $surveyID, int $userID) : bool {
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//Perform a request on the database
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return CS::get()->db->deleteEntry(
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$this::SURVEY_RESPONSE_TABLE,
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"ID_sondage = ? AND ID_utilisateurs = ?",
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array($surveyID, $userID));
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}
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/**
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* Delete the survey associated to a post
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*
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* @param int $postID The ID of the post associated with the survey
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* @return bool TRUE in case of success / FALSE else
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*/
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public function delete(int $postID) : bool {
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//Get the ID of the survey to delete
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$surveyID = $this->get_id($postID);
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//Check for errors
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if($surveyID == 0)
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return false;
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//Delete informations from the responses table
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CS::get()->db->deleteEntry($this::SURVEY_RESPONSE_TABLE, "ID_sondage = ?", array($surveyID));
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//Delete informations from the choices table
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CS::get()->db->deleteEntry($this::SURVEY_CHOICES_TABLE, "ID_sondage = ?", array($surveyID));
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//Delete informations from the informations table
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CS::get()->db->deleteEntry($this::SURVEY_INFOS_TABLE, "ID = ?", array($surveyID));
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//Success
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return true;
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}
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/**
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* Get survey informations by post ID
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*
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* @param int $postID The DI of the related post
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* @return Survey Information about the survey, or an invalid object in case
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* of failure
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*/
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private function get_survey_info(int $postID) : Survey {
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//Fetch the database
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$conditions = "WHERE ID_texte = ?";
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$condVals = array($postID);
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$result = CS::get()->db->select($this::SURVEY_INFOS_TABLE, $conditions, $condVals);
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if(count($result) == 0)
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return new Survey();
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else
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return $this->dbToSurvey($result[0]);
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}
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/**
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* Turn survey entry from the database into Survey object
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*
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* @param array $data Data from the database
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* @return Survey Generated survey object
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*/
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private function dbToSurvey(array $data) : Survey {
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$survey = new Survey();
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$survey->set_id($data['ID']);
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$survey->set_userID($data["ID_utilisateurs"]);
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$survey->set_postID($data["ID_texte"]);
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$survey->set_time_sent(strtotime($data['date_creation']));
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$survey->set_question($data['question']);
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return $survey;
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}
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/**
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* Get survey choices
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*
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* @param int $surveyID The ID of the target survey
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* @return array Informations about the choices of the survey (as Survey objects)
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*/
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private function get_survey_choices(int $surveyID) : array {
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//Fetch the database
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$conditions = "WHERE ID_sondage = ?";
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$values = array($surveyID);
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//Fetch the questions
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$result = CS::get()->db->select($this::SURVEY_CHOICES_TABLE, $conditions, $values);
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//Parse results
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$choices = array();
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foreach($result as $row){
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$choice_infos = $this->dbToChoice($row);
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$choices[$choice_infos->get_id()] = $choice_infos;
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}
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return $choices;
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}
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/**
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* Parse survey choices from database
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*
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* @param array $db_infos Informations about the choice
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* @return SurveyChoice Usable informations about the survey
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*/
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private function dbToChoice(array $db_infos) : SurveyChoice {
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$infos = new SurveyChoice();
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$infos->set_id($db_infos['ID']);
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$infos->set_name($db_infos['Choix']);
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$infos->set_responses($this->count_choices_responses($infos->get_id()));
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return $infos;
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}
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/**
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* Count the number of responses for a choice
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*
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* @param int $choiceID The ID of the choice
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* @return int The number of response
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*/
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private function count_choices_responses(int $choiceID) : int {
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//Perform a request on the database
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$conditions = "WHERE ID_sondage_choix = ?";
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$values = array($choiceID);
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return CS::get()->db->count($this::SURVEY_RESPONSE_TABLE, $conditions, $values);
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}
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/**
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* Get the user choice for a survey
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*
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* @param int $surveyID The ID of the target survey
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* @param int $userID The ID of the target user
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* @return int The ID of the selected answer, or 0 if no response was given
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*/
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private function get_user_choice(int $surveyID, int $userID) : int {
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//Perform a request on the database
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$conditions = "WHERE ID_utilisateurs = ? AND ID_sondage = ?";
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$values = array($userID, $surveyID);
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$result = CS::get()->db->select($this::SURVEY_RESPONSE_TABLE, $conditions, $values);
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//Check if no response was given
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if(count($result) == 0)
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return 0;
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return $result[0]["ID_sondage_choix"];
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}
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}
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//Register component
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Components::register("survey", new SurveyComponent()); |