How do I use Sheets.Spreadsheets.getByDataFilter from app script for a filter view that is created in spreadsheet? - google-apps-script

Question

I am seeking help with the following case
I have a spreadsheet, and it contains few filter views - f1, f2, ...
I have an app script associated with the spreadsheet. I have enabled Resources > Advanced Google Services to access the Sheets API v4.
Currently, I access that data as
var fruits = Sheets.Spreadsheets.Values.get("1YBPXShvssFpTI-5dPSsy_N_iEVaeHezdxymsdxpTy6w", "Fruits!A:B").values;
And I get the corresponding data back.
I would now, like to only get the data that is used by the filter view, so that I do not bring the entire data which is not necessary and slows down the processing.
I saw that there is something called Sheets.Spreadsheets.getByDataFilter(resource, spreadsheetId), but I am not sure how to create the resource object.
Given my filters, and knowing the spreadsheet Id, how do I only fetch the data based on the filter names that I know?
UPDATE
My latest attempt looks like
var ss = SpreadsheetApp.getActiveSpreadsheet();
function getUnpostedItems() {
Logger.log("This function will prioritize the new items that are added into the inventory");
var sheet = ss.getSheetByName("Items");
var filterSettings = {};
filterSettings.criteria = {};
var condition = {
"condition": {
"type": "LESS_THAN",
"values": [
{ "userEnteredValue": "=NOW()-30" }
]
}
}
filterSettings['criteria'][1] = {
'condition': condition
};
var filterSettings = {
range: {
sheetId: sheet.getSheetId(),
},
}
var req = {
"setBasicFilter": {
"filter": filterSettings
}
}
// var items = Sheets.Spreadsheets.batchUpdate({'requests': [req]}, ss.getId());
var items = ss.getRange("Items!A:B").getValues()
// var items1 = Sheets.Spreadsheets.Values.get("1YBPXShvssFpTI-5dPSsy_N_iEVaeHezdxymsdxpTy6c", "Items!A:B").values
Logger.log("Found items:" + items.length);
return [];
}
But no luck so far!

Answer 1

As per #tanaike's help, I was able to get the following working
function getUnpostedItems() {
Logger.log("This function will prioritize the new items that are added into the inventory");
// var ss = SpreadsheetApp.getActiveSpreadsheet(); // Added
var sheet = ss.getSheetByName("Items"); // Modified
var values = sheet.getDataRange().getValues();
Logger.log("VALUES "+values.length);
//var newCriteria = SpreadsheetApp.newFilterCriteria().whenDateBefore(new Date()).build();
var newCriteria = SpreadsheetApp.newFilterCriteria().whenDateBefore(subDaysFromDate(new Date(), 30)).build();
var range = sheet.getFilter().setColumnFilterCriteria(1, newCriteria).getRange(); //The 1-indexed position of the column.
// values = range.getValues();
// I added below script.
var res = Sheets.Spreadsheets.get(ss.getId(), {
ranges: ["Items"], // <--- Please set the sheet name.
fields: "sheets/data"
});
var values = res.sheets[0].data[0].rowMetadata.reduce(function(ar, e, i) {
if (!e.hiddenByFilter && res.sheets[0].data[0].rowData[i]) {
ar.push(
res.sheets[0].data[0].rowData[i].values.map(function(col) {
return col.userEnteredValue[Object.keys(col.userEnteredValue)[0]];
})
);
}
return ar;
}, []);
Logger.log("VALUES "+values.length);
Logger.log("VALUES "+values);
//Logger.log("Found Items:" + items.length);
return [];
}