console.loggerName = 'js.lib';
console.log('Load lib module');


function compare(a, b, operator) {
    // Hint: a = currentState, b = targetState
    let logMsg = a + ', ' + b + ' with operator ' + operator;
    let returnValue = undefined;
    try {
        logMsg = 'Quantity comparison of ' + logMsg;
        switch (operator)  {
            case '==':
                returnValue = a.equal(b);
                break;
            case '!=':
                returnValue = !a.equal(b);
                break;
            case '<' :
                returnValue = a.lessThan(b);
                break;
            case '<=':
                returnValue = a.lessThanOrEqual(b);
                break;
            case '>' :
                returnValue = a.greaterThan(b);
                break;
            case '>=':
                returnValue = a.greaterThanOrEqual(b);
                break;
        }
    } catch(e) {
        logMsg = 'Standard comparison of ' + logMsg;
        switch (operator) {
            case '==':
                returnValue = (a == b);
                break;
            case '!=':
                returnValue = !(a == b);
                break;
            case '<' :
                returnValue = (a < b);
                break;
            case '<=':
                returnValue = (a <= b);
                break;
            case '>' :
                returnValue = (a > b);
                break;
            case '>=':
                returnValue = (a >= b);
                break;
        }        
    }

    if (returnValue == undefined) {
        console.error('No valid operator provided');
    } else {
        console.debug(logMsg);
    }
        
    return returnValue;
}

function convertValue(value) {
    console.debug('Converting value ' + value + ' of type ' + typeof value);
    if(typeof value === 'string') {
        if(value.includes(' ')) {
            let logMsg = '';
            let returnValue;
            try {
                logMsg = 'Quantity: ' + value;
                returnValue = Quantity(value);
            } catch(e) {
                logMsg = 'Not a Quantity but has a space, leaving as a string: ' + value;
                returnValue = value;
            } finally {
                console.debug(logMsg);
                return returnValue;
            }
        } else if(!isNaN(value)) {
            console.debug('Number: ' + value)
            return Number.parseFloat(value);
        } else if(value == 'UnDefType' || value == 'NULL' || value == 'UNDEF') {
            console.debug('UnDefType: ' + value);
            return 'UnDefType';
        }
        console.debug('String: ' + value);
        return value;
    } else if(value instanceof DecimalType || value instanceof PercentType) {
        console.debug('DecimalType or PercentType: ' + value);
        return value.floatValue();
    } else if(value instanceof QuantityType) {
        console.debug('QuantityType: ' + value);
        return Quantity(value);
    } else {
        console.debug('String: ' + value);
        return value.toString();
    }
}


module.exports = {
    compare,
    convertValue
};