Event::saveQuestionAttempt()

Complexity

Conditions	25
Paths	> 20000

Size

Total Lines	176
Code Lines	108

Duplication

Lines	0
Ratio	0 %

Importance

Changes

0

<?php
    public static function saveQuestionAttempt(
        $score,
        $answer,
        $question_id,
        $exe_id,
        $position,
        $exercise_id = 0,
        $updateResults = false,
        $fileName = null,
        $user_id = null,
        $course_id = null,
        $session_id = null,
        $learnpath_id = null,
        $learnpath_item_id = null
    ) {
        global $debug;
        $question_id = Database::escape_string($question_id);
        $exe_id = Database::escape_string($exe_id);
        $position = Database::escape_string($position);
        $now = api_get_utc_datetime();

        // check user_id or get from context
        if (empty($user_id)) {
            $user_id = api_get_user_id();
            // anonymous
            if (empty($user_id)) {
                $user_id = api_get_anonymous_id();
            }
        }
        // check course_id or get from context
        if (empty($course_id) or intval($course_id) != $course_id) {
            $course_id = api_get_course_int_id();
        }
        // check session_id or get from context
        if (empty($session_id)) {
            $session_id = api_get_session_id();
        }
        // check learnpath_id or get from context
        if (empty($learnpath_id)) {
            global $learnpath_id;
        }
        // check learnpath_item_id or get from context
        if (empty($learnpath_item_id)) {
            global $learnpath_item_id;
        }

        $TBL_TRACK_ATTEMPT = Database::get_main_table(TABLE_STATISTIC_TRACK_E_ATTEMPT);

        if ($debug) {
            error_log("----- entering saveQuestionAttempt() function ------");
            error_log("answer: $answer");
            error_log("score: $score");
            error_log("question_id : $question_id");
            error_log("position: $position");
        }

        //Validation in case of fraud with active control time
        if (!ExerciseLib::exercise_time_control_is_valid($exercise_id, $learnpath_id, $learnpath_item_id)) {
            if ($debug) {
                error_log("exercise_time_control_is_valid is false");
            }
            $score = 0;
            $answer = 0;
        }

        $session_id = api_get_session_id();

        if (!empty($question_id) && !empty($exe_id) && !empty($user_id)) {
            if (is_null($answer)) {
                $answer = '';
            }
            $attempt = array(
                'user_id' => $user_id,
                'question_id' => $question_id,
                'answer' => $answer,
                'marks' => $score,
                'c_id' => $course_id,
                'session_id' => $session_id,
                'position' => $position,
                'tms' => $now,
                'filename' => !empty($fileName) ? basename($fileName) : $fileName,
                'teacher_comment' => ''
            );

            // Check if attempt exists.
            $sql = "SELECT exe_id FROM $TBL_TRACK_ATTEMPT
                    WHERE
                        c_id = $course_id AND
                        session_id = $session_id AND
                        exe_id = $exe_id AND
                        user_id = $user_id AND
                        question_id = $question_id AND
                        position = $position";
            $result = Database::query($sql);
            if (Database::num_rows($result)) {
                if ($debug) {
                    error_log("Attempt already exist: exe_id: $exe_id - user_id:$user_id - question_id:$question_id");
                }
                if ($updateResults == false) {
                    //The attempt already exist do not update use  update_event_exercise() instead
                    return false;
                }
            } else {
                $attempt['exe_id'] = $exe_id;
            }

            if ($debug) {
                error_log("updateResults : $updateResults");
                error_log("Saving question attempt: ");
                error_log($sql);
            }

            $recording_table = Database::get_main_table(TABLE_STATISTIC_TRACK_E_ATTEMPT_RECORDING);

            if ($updateResults == false) {
                $attempt_id = Database::insert($TBL_TRACK_ATTEMPT, $attempt);

                if ($debug) {
                    error_log("Insert attempt with id #$attempt_id");
                }

                if (defined('ENABLED_LIVE_EXERCISE_TRACKING')) {
                    if ($debug) {
                        error_log("Saving e attempt recording ");
                    }
                    $attempt_recording = array(
                        'exe_id' => $attempt_id,
                        'question_id' => $question_id,
                        'marks' => $score,
                        'insert_date' => $now,
                        'author' => '',
                        'session_id' => $session_id,
                    );
                    Database::insert($recording_table, $attempt_recording);
                }
            } else {
                Database::update(
                    $TBL_TRACK_ATTEMPT,
                    $attempt,
                    array(
                        'exe_id = ? AND question_id = ? AND user_id = ? ' => array(
                            $exe_id,
                            $question_id,
                            $user_id
                        )
                    )
                );

                if (defined('ENABLED_LIVE_EXERCISE_TRACKING')) {
                    $attempt_recording = array(
                        'exe_id' => $exe_id,
                        'question_id' => $question_id,
                        'marks' => $score,
                        'insert_date' => $now,
                        'author' => '',
                        'session_id' => $session_id,
                    );

                    Database::update(
                        $recording_table,
                        $attempt_recording,
                        array(
                            'exe_id = ? AND question_id = ? AND session_id = ? ' => array(
                                $exe_id,
                                $question_id,
                                $session_id
                            )
                        )
                    );
                }
                $attempt_id = $exe_id;
            }

            return $attempt_id;

The expression return $attempt_id also could return the type integer|string which is incompatible with the documented return type boolean.

        } else {
            return false;
        }