<?PHP // $Id$

	require_once('../../config.php');
	require_once('lib.php');


// Make sure this is a legitimate posting

    if (!$formdata = data_submitted("$CFG->wwwroot/mod/survey/view.php")) {
        error("You are not supposed to use this script like that.");
    }

    if (isguest()) {
        error("Guests are not allowed to answer surveys", $_SERVER["HTTP_REFERER"]);
    }

    require_variable($id);    // Course Module ID

    if (! $cm = get_record("course_modules", "id", $id)) {
        error("Course Module ID was incorrect");
    }

    if (! $course = get_record("course", "id", $cm->course)) {
        error("Course is misconfigured");
    }

    require_login($course->id);

    if (! $survey = get_record("survey", "id", $cm->instance)) {
        error("Survey ID was incorrect");
    }

    add_to_log($course->id, "survey", "submit", "view.php?id=$cm->id", "$survey->id");

    if (survey_already_done($survey->id, $USER->id)) {
        notice(get_string("alreadysubmitted", "survey"), $_SERVER["HTTP_REFERER"]);
        exit;
    }


// Sort through the data and arrange it
// This is necessary because some of the questions 
// may have two answers, eg Question 1 -> 1 and P1

    $answers = array(); 

    foreach ($formdata as $key => $val) {
        if ($key <> "userid" && $key <> "id") {
            if ( substr($key,0,1) == "q") {  
                $key = substr($key,1);   // keep everything but the 'q'
            }
            if ( substr($key,0,1) == "P") {
                $realkey = substr($key,1);
                $answers[$realkey][1] = $val;
            } else {
                $answers[$key][0] = $val;
            }
        }
    }
 

// Now store the data.

    $timenow = time();
    foreach ($answers as $key => $val) {

        $newdata->time = $timenow;
        $newdata->userid = $USER->id;
        $newdata->survey = $survey->id;
        $newdata->question = $key;
        if (!empty($val[0])) {
            $newdata->answer1 = $val[0];
        } else {
            $newdata->answer1 = "";
        }
        if (!empty($val[1])) {
            $newdata->answer2 = $val[1];
        } else {
            $newdata->answer2 = "";
        }

        if (! insert_record("survey_answers", $newdata)) {
            error("Encountered a problem trying to store your results. Sorry.");
        }
    }

// Print the page and finish up.

    $strsurveys = get_string("modulenameplural", "survey");
    $strsurveysaved = get_string("surveysaved", "survey");

	print_header("$course->shortname: $strsurveysaved", "$course->fullname", 
        "<A HREF=/course/view.php?id=$course->id>$course->shortname</A> ->
         <A HREF=index.php?id=$course->id>$strsurveys</A> -> $survey->name -> $strsurveysaved", "");


    notice(get_string("thanksforanswers","survey", $USER->firstname), "$CFG->wwwroot/course/view.php?id=$course->id");
   
    exit;
    

?>