How to convert Firestore REST API response to normal json? - json

Question

I am trying to use Firestore from Unity by using REST API of it. Everything is working as expected till now.
When reading document from Firestore, it returns json in different format.
Like this.
{
"name": "projects/firestore-unity-demo-87998/databases/(default)/documents/test/panara",
"fields": {
"health": {
"integerValue": "1008"
},
"name": {
"stringValue": "Bhavin Panara"
},
"birthday": {
"timestampValue": "1992-10-08T04:40:10Z"
},
"alive": {
"booleanValue": true
},
"floatingPointNumber": {
"testFloat": 100.1
}
},
"createTime": "2019-07-30T13:27:09.599079Z",
"updateTime": "2019-07-31T11:41:10.637712Z"
}
How can I convert this kind of json to a normal json like this.
{
"health":1008,
"name":"Bhavin Panara",
"birthday" : "1992-10-08T04:40:10Z",
"alive":true,
"floatingPointNumber":100.1
}

Answer 1

I used the code from firestore-parser
const getFireStoreProp = (value) => {
const props = {
arrayValue: 1,
bytesValue: 1,
booleanValue: 1,
doubleValue: 1,
geoPointValue: 1,
integerValue: 1,
mapValue: 1,
nullValue: 1,
referenceValue: 1,
stringValue: 1,
timestampValue: 1,
};
return Object.keys(value).find(k => props[k] === 1);
};
export const fireStoreParser = (value) => {
let newVal = value;
// You can use this part to avoid mutating original values
// let newVal;
// if (typeof value === 'object') {
// newVal = { ...value };
// } else if (value instanceof Array) {
// newVal = value.slice(0);
// } else {
// newVal = value;
// }
const prop = getFireStoreProp(newVal);
if (prop === 'doubleValue' || prop === 'integerValue') {
newVal = Number(newVal[prop]);
} else if (prop === 'arrayValue') {
newVal = ((newVal[prop] && newVal[prop].values) || []).map(v => fireStoreParser(v));
} else if (prop === 'mapValue') {
newVal = fireStoreParser((newVal[prop] && newVal[prop].fields) || {});
} else if (prop === 'geoPointValue') {
newVal = { latitude: 0, longitude: 0, ...newVal[prop] };
} else if (prop) {
newVal = newVal[prop];
} else if (typeof newVal === 'object') {
Object.keys(newVal).forEach((k) => { newVal[k] = fireStoreParser(newVal[k]); });
}
return newVal;
};

Answer 2

function toValue(field) {
return "integerValue" in field
? Number(field.integerValue)
: "doubleValue" in field
? Number(field.doubleValue)
: "arrayValue" in field
? field.arrayValue.values.map(toValue)
: "mapValue" in field
? toJSON(field.mapValue)
: Object.entries(field)[0][1];
}
function toJSON(doc) {
return Object.fromEntries(
Object.entries(doc.fields ?? {}).map(([key, field]) => [key, toValue(field)])
);
}