/**
 * This function processes the submitted form for all of the sections.  Most of the work
 * is completed via using the section_icon class and its associated routines.  The data
 * is pulled from the form, a check is made to see if any boxes are ticked, then the
 * desired result is processed.  Any draft files that need to be saved are saved in this
 * function.
 *
 * TODO: some logic should be added to outright delete a settings record if it has neither
 * a disable flag or custom label associated with it.
 *
 */
function process_form($courseid, $blockid, &$submittedform, &$sectionheaders, $numberofsections)
{
    global $DB;
    for ($i = 0; $i < $numberofsections; $i++) {
        $filepickername = 'fileinfo_' . "{$i}";
        $hiddenidname = 'hiddenid_' . "{$i}";
        $masterupdatename = 'masterid_' . "{$i}";
        $deleteiconname = 'deleteid_' . "{$i}";
        $noiconname = 'noicon_' . "{$i}";
        $newcourseid = $courseid;
        $customlabelfield = 'customlabelfield_' . "{$i}";
        $customlabelcheckbox = 'customlbelcheckbox_' . "{$i}";
        $si = new section_icon($courseid, $sectionheaders[$i]);
        // Update master via using courseid 0.
        if (!isset($submittedform->{$masterupdatename})) {
            // Use courseid of 1 so we get the correct context.
            $newcourseid = 1;
            $context = context_course::instance($newcourseid);
        } else {
            // Save block context instead of the course context for course-specific records.
            $context = context_block::instance($blockid);
        }
        // Check for delete first.
        if (isset($submittedform->{$deleteiconname})) {
            $si->delete_record();
            continue;
        }
        $draftitemid = file_get_submitted_draft_itemid($filepickername);
        $itemid = get_unused_file_id();
        file_save_draft_area_files($draftitemid, $context->id, BNN_BLOCK_SAVE_COMPONENT, BNN_BLOCK_SAVE_AREA, $itemid, array('subdirs' => 0, 'maxbytes' => BNN_MAX_BYTES, 'maxfiles' => BNN_MAX_FILES));
        // Only update if the user uploaded a file.
        if (check_draft_id($draftitemid)) {
            $si->update_icon_record($newcourseid, $itemid);
        }
        // The other IFs are separate cases because the user can do multiple things at once.
        if ($submittedform->{$noiconname} != $si->get_icon_disable()) {
            $si->update_disableicon($submittedform->{$noiconname});
        }
        if ($submittedform->{$customlabelcheckbox} == true) {
            // Only write label if different from existing label.
            if ($si->get_custom_label() != $submittedform->{$customlabelfield}) {
                $si->update_label($submittedform->{$customlabelfield});
            }
        } else {
            // Only write a null if the record exists and is not already null.
            if ($si->settings_exists() && $si->get_custom_label() != null) {
                $si->update_label(null);
            }
        }
    }
}
 /**
  * This method tests the constructor.  I then use the exists() and
  * master_exists() methods to make sure that the proper records were
  * grabbed from the DB.
  *
  */
 public function test_constructor()
 {
     $courseid = $this->testcourseid;
     // Test Craig's Resources first (no settings).
     $sectionname = "Craig's Resources";
     $si = new section_icon($courseid, $sectionname);
     $this->assertTrue((bool) $si->exists());
     $this->assertTrue((bool) $si->master_exists());
     $this->assertFalse((bool) $si->settings_exists());
     // And also another section with a course-specific record (has settings).
     $sectionname = "Some Other Section";
     $si = new section_icon($courseid, $sectionname);
     $this->assertTrue((bool) $si->exists());
     $this->assertTrue((bool) $si->master_exists());
     $this->assertTrue((bool) $si->settings_exists());
     // Topic 4 has no course specific record (has settings).
     $sectionname = "Topic 4";
     $si = new section_icon($courseid, $sectionname);
     $this->assertFalse((bool) $si->exists());
     $this->assertTrue((bool) $si->master_exists());
     $this->assertFalse((bool) $si->settings_exists());
     // Now try a new course altogether.
     $courseid = 9999;
     $sectionname = "Craig's Resources";
     $si = new section_icon($courseid, $sectionname);
     $this->assertFalse((bool) $si->exists());
     $this->assertTrue((bool) $si->master_exists());
     // Now try a section that does not exist.
     $sectionname = "This section does not exist";
     $si = new section_icon($courseid, $sectionname);
     $this->assertFalse((bool) $si->exists());
     $this->assertFalse((bool) $si->master_exists());
     $this->assertFalse((bool) $si->settings_exists());
 }