formula_string.js

const jsondata = {
    "operator": "and",
    "rules": [
        {
            "operator": "and",
            "rules": [
                {
                    "operator": "and",
                    "rules": [
                        {
                            "first": {
                                "name": "hra"
                            },
                            "second": "4000",
                            "compare_operator": "+",
                            "second_value_type": "value"
                        }
                    ],
                    "first": {
                        "name": "location"
                    },
                    "second": {
                        "name": "abroad"
                    },
                    "compare_operator": "=",
                    "second_value_type": "master"
                }
            ],
            "first": {
                "name": "basic"
            },
            "second": "0.4",
            "compare_operator": "*",
            "second_value_type": "value"
        }
    ]
} // Try edit me

let formula = "";

formula = formula + jsondata.rules[0].first.name + jsondata.rules[0].compare_operator
if (jsondata.rules[0].second_value_type == 'value') {
    formula = formula + jsondata.rules[0].second
}
else{
    formula = formula + jsondata.rules[0].second.name
}

jsondata.rules[0].rules.forEach(row => {
    console.log('Row -- ',row)
    let second_value = row.second_value_type == 'value' ? row.second : row.second.name
    let rule_level_one = checkRule(row.first.name, row.operator, second_value) // Checks for true or false 
    console.log('Row --2 ',second_value)
    
    if (rule_level_one) {
        
        
        row.rules.forEach(sub_row => {
            let second_sub_value = sub_row.second_value_type == 'value' ? sub_row.second : sub_row.second.name
            let rule_level_two = checkRule(sub_row.first.name, sub_row.operator, second_sub_value) // Checks for true or false 
            if (rule_level_two) {
                
                formula = formula + sub_row.first.name + sub_row.compare_operator + second_sub_value
            }

            
        })

    }
        console.log(formula)

})

console.log(formula)



function checkRule(one,operator,two){
    if(operator == '=='){
        return one == two
    }
    return false
}