I am trying to validate a URL link, by checking against valid parameters and acceptable values (whitelist) using an object.

const validParams = {
   "brand",
   "item",
   "size",
   "country"
}

const validBrandValues = {
   "nike",
   "adidas",
   "puma",
   ...
}

export const Validate = (link) => {
    const urltest = "https://example.com/?brand=nike adidas puma cat&item=trainers jackets socks&random=hello"
    var url = "";
    try {
        url = decodeURI(urltest);
      } catch (e) { 
        console.error(e);
    }
    const params = url.split("?");
    const value = params[1].split("&").map(item => item.split("="));

    console.log(value)
    //for(int i = 0; i < value.length; i  ){
       //if(value[i] === "brand"){
          //for(int j = 0; j < value[i].length; j  ){
             //validBrandValue.contains()
          //}
       //}
    //}
}
//Current Output
(3) [Array(2), Array(2), Array(2)]
0: (2) ["brand", "nike adidas puma cat"]
1: (2) ["item", "trainers jackets socks"]
2: (2) ["random", "hello"]

How can I efficiently analyze the input URL in the Validate function to flag any non-whitelisted values or parameters. In the provided link example it will flag that cat is an unknown brand and random parameter is not valid

CodePudding user response：

Here is one way:

const validValues = { 
  brand: [ "nike", "adidas", "puma" ],
  item:  [ "trainers", "jackets", "socks"]
}

const Validate = link => {
  const url = new URL(link);
  const entries = [...url.searchParams.entries()];
  let testArr = entries.map(entry => {
    const key = entry[0];
    const valids = validValues[key]; // key exists
    const values = entry[1].split(" "); // parms space separated
    return {
      [key]: valids ? values.map(elem => ({ [elem]:valids.includes(elem)})) : false
    }
  })
  return testArr;
};
console.log(Validate("https://example.com/?brand=nike adidas puma cat&item=trainers jackets socks&random=hello"))