Fix JOLT config to get expected result

Question

I receive JSON from API:

[
   {
      "date":"2023-08-15",
      "params":[
         {
            "id":"3877",
            "available":true,
            "tag": "podxmeil"
         },
         {
            "id":"559",
            "available":false,
            "tag": "kogdaeymtim"
         }
      ]
   },
   {
      "date":"2023-08-16",
      "params":[
         {
            "id":"327",
            "available":false,
            "tag": "syuopernuitd"
         },
         {
            "id":"916",
            "available":false,
            "tag": "tabgramidi"
         }
      ]
   }
]

I want to loop through params array and add values from it to top level Tried with:

[
  {
    "operation": "shift",
    "spec": {
      "*": {
        "date": "[&1].date",
        "params": {
          "*": {
            "id": "[&1].id",
            "available": "[&1].available"
          }
        }
      }
    }
  }
]

But it stores values inside array and returns invalid result:

I Expect this result:

Answer 1

You can use the following spec.

[
  {
    "operation": "shift",
    "spec": {
      "*": {
        "params": {
          "*": {
            "@(2,date)": "&3.&1.date",
            "id": "&3.&1.&",
            "available": "&3.&1.&"
          }
        }
      }
    }
    },
  {
    "operation": "shift",
    "spec": {
      "*": {
        "*": ""
      }
    }
  }
]