An array of dynamic JavaScript objects for joining and filtering

I'm currently facing a rather intricate scenario: I have 3 arrays in JavaScript as depicted below. The values in the Values array keep changing every 5 seconds to either true or false.

var Config = [{
    "rdd": "Transducer Failure",
    "performance": true,
    "agc": false,
    "snr": true,
    "sos": false,
    "flowvel": true
  },
  {
    "rdd": "Detection Problem",
    "performance": false,
    "agc": true,
    "snr": false,
    "sos": true,
    "flowvel": false
  }
]

The Config array contains configurations for all instances that are applicable for their respective rdd. For instance, "Transducer Failure" will have performance, snr, and flowvel but not all other fields will be applicable such as agc and sos.

var Instance = [{
  "U": [{
    "performance": "abc",
    "agc": "xyz",
    "snr": "pqr",
    "sos": "vns",
    "flowvel": "mns"
  }],
  "Y": [{
    "performance": "a",
    "agc": "b",
    "snr": "c",
    "sos": "d",
    "flowvel": "e"
  }]
}]

The Instances array consists of instances with configuration from the Config array:

var Values = [{
  "abc": true,
  "xyz": false,
  "pqr": true,
  "vns": false,
  "mns": true,
  "a": true,
  "b": false,
  "c": false,
  "d": true,
  "e": true
}]

Values hold the corresponding values for each instance.

I am aiming to create a new object array that satisfies the following conditions:

  1. If the value in Config is true; for example, if performance or snr in the config array is true, then it corresponds to the respective value in the Instance array (e.g., if performance is true, it maps to "abc" in the Instance array and if performance is false, it returns NA).

  2. The key's value in the Config array will match the value of the corresponding key in the Values array. For example, if performance is true, it corresponds to the instance 'abc' and if the value of "abc" is true, the value of performance will be either true or false. Additionally, if the value of performance in the Config itself is false, it will return "NA".

Expected output:

result = [{
  "U": [{
      "rdd": "Transducer Failure",
      "performance": true,
      "agc": "NA",
      "snr": true,
      "sos": "NA",
      "flowvel": true
    },
    {
      "rdd": "Detection Problem",
      "performance": "NA",
      "agc": false,
      "snr": "NA",
      "sos": false,
      "flowvel": "NA"
    }
  ],
  "Y": [{
      "rdd": "Transducer Failure",
      "performance": true,
      "agc": "NA",
      "snr": false,
      "sos": "NA",
      "flowvel": true
    },
    {
      "rdd": "Detection Problem",
      "performance": "NA",
      "agc": false,
      "snr": "NA",
      "sos": true,
      "flowvel": "NA"
    }
  ]
}]
javascriptarraysmultidimensional-arrayjavascript-objects

Answer №1

My solution involves using Object.keys to extract key names and employing array notation to assign dynamic names in the resulting object key. Additionally, I utilized Object.assign to ensure that only one object is present in the final result, which is stored in the variable resultArray.

var Config = [
    {
        "rdd": "Transducer Failure",
        "performance": true,
        "agc": false,
        "snr": true,
        "sos": false,
        "flowvel": true
    },
    {
        "rdd": "Detection Problem",
        "performance": false,
        "agc": true,
        "snr": false,
        "sos": true,
        "flowvel": false
    }
]

var Instance = [{
    "U": [{
        "performance": "abc",
        "agc": "xyz",
        "snr": "pqr",
        "sos": "vns",
        "flowvel": "mns"
    }],
    "Y": [{
        "performance": "a",
        "agc": "b",
        "snr": "c",
        "sos": "d",
        "flowvel": "e"
    }]
}]

var Values = [{
    "abc": true,
    "xyz": false,
    "pqr": true,
    "vns": false,
    "mns": true,
    "a": true,
    "b": false,
    "c": false,
    "d": true,
    "e": true
}]


function getResult(Instance, config, v) {
    let resultArray = [];
    for (let i = 0; i < Instance.length; i++) {
        const resultKeys = Object.keys(Instance[i])
        const element = Instance[i];
        let prev = null
        resultKeys.forEach((r, index) => {
            let reuslt = {
                [r]: config.map(c => {
                    const configKeys = Object.keys(c)
                    return {
                        [configKeys[0]]: c.rdd,
                        [configKeys[1]]: c[configKeys[1]] ? v[0][element[r][i][configKeys[1]]] : 'NA',
                        [configKeys[2]]: c[configKeys[2]] ? v[0][element[r][i][configKeys[2]]] : 'NA',
                        [configKeys[3]]: c[configKeys[3]] ? v[0][element[r][i][configKeys[3]]] : 'NA',
                        [configKeys[4]]: c[configKeys[4]] ? v[0][element[r][i][configKeys[4]]] : 'NA',
                        [configKeys[5]]: c[configKeys[5]] ? v[0][element[r][i][configKeys[5]]] : 'NA'
                    }
                })
            }
            if (index === 0) {
                prev = reuslt
            }
            else {
                Object.assign(prev, reuslt)
            }
        })
        resultArray.push(prev)
    }
    console.log(resultArray)
}
getResult(Instance, Config, Values)

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