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var ONGOING_SAS_FIELD_NAME = 'MHONGO';
var endDate = itemJson.item.value;
var repeatKey = itemJson.item.itemGroupRepeatKey;
logger('endDate '+endDate);
logger('repeatKey '+repeatKey);
var ongoingItem = findFirstItemByName(formJson, null, ONGOING_SAS_FIELD_NAME, repeatKey);
var ongoing = ongoingItem.value;
logger('ongoing '+ongoing);

var valid = true;
if (ongoing.equalsIgnoreCase('true')) {
    if (endDate) {
        customErrorMessage('There can not be an end date if ongoing is true');
        valid = false;
    }
} else if (ongoing.equalsIgnoreCase('false')) {
    if (!endDate) {
        customErrorMessage('There must be an end date if ongoing is false');
        valid = false;
    }
} else {
    logger('unexpected ongoing value of ['+ongoing+']');
}
return valid;

var ongoingVarName = 'AEONGO';
var endDateVarName = 'AEENDAT';
var outcomeVarName = 'AEOUT';
var ongoingYesValue = 'Y';
var acceptableOngoingOutcomeValues = ['FATAL','NOT RECOVERED/NOT RESOLVED','RECOVERING/RESOLVING','UNKNOWN'];
var acceptableNotOngoingOutcomeValues = ['RECOVERED/RESOLVED','RECOVERED/RESOLVED WITH SEQUELAE'];
 
var thisRepeatKey = itemJson.item.itemGroupRepeatKey;
// logger('thisRepeatKey '+thisRepeatKey);

var outcome = findFirstItemByName(formJson, '', outcomeVarName, thisRepeatKey).value;
//logger('outcome '+outcome);
var endDate = findFirstItemByName(formJson, '', endDateVarName, thisRepeatKey).value;
//logger('endDate '+endDate);
var ongoing = findFirstItemByName(formJson, '', ongoingVarName, thisRepeatKey).value;
//logger('ongoing '+ongoing);
var endDatePresent = endDate !== null && hasEndDate(endDate);
//logger('endDatePresent '+endDatePresent);

var errorMessage = null;
if (ongoing == ongoingYesValue) {
    // logger('ongoing is '+ongoingYesValue);
    if (endDatePresent == true) {
        errorMessage = 'There can not be an end date for an ongoing AE';
    } else if (acceptableOngoingOutcomeValues.indexOf(outcome) == -1) {
        errorMessage = outcome+' is not an acceptable outcome for an ongoing AE';
    }else {
    //    logger("valid: Ongoing is ["+ongoingYesValue+"], end date is NOT present, and the outcome "+outcome+" is in the list of values acceptable for ongoing conditions")
    }
} else {
    // logger('ongoing ['+ongoing+'] is not '+ongoingYesValue);
    if (endDatePresent == false) {
        errorMessage = 'There must be an end date for a non-ongoing AE';
    } else if (acceptableNotOngoingOutcomeValues.indexOf(outcome) == -1) {
        errorMessage = outcome+' is not an acceptable outcome for a non-ongoing AE';
    } else {
     //   logger("valid: Ongoing is not ["+ongoingYesValue+"], end date is present, and the outcome "+outcome+" is in the list of values acceptable for non-ongoing conditions")
    }
}

if (errorMessage != null) {
    customErrorMessage(errorMessage);
    return false;
}
return true;

// true if at least the year is specified
function hasEndDate(dateString) {
    var matches = dateString.match(/^\d{4}.*$/);
//    logger('regex against ['+dateString+'] matches? '+matches);
    return matches != null;
}