How to upload .json file to google drive, using google javascript library(gapi) and access token?

Question

I have phonegap app. I want to upload and download files to Google Drive. I already figured out how to recieve access_token to Google Drive API. But I can't to create correct request on javascript, that upload json file to google drive.

I used this: https://developers.google.com/drive/web/manage-uploads And this: https://developers.google.com/drive/v2/reference/files/insert

Please help!

Answer 1

Here is my solution. Need authorization with this scopes: https://www.googleapis.com/auth/drive.readonly https://www.googleapis.com/auth/drive.appdata

Upload and update file.

function backupGoogleDrive(accessToken) {
var request = gapi.client.request({
    'path': "/drive/v2/files?q=title+%3D+'" + backupFileName + "'&key=" + API_KEY,
    'method': 'GET',

    'headers': {
        'Authorization': 'Bearer ' + accessToken
    }});
alert('before execute');
request.execute(function(ret, raw){
    alert('after list' + JSON.stringify(ret));
    if (ret.items[0] == undefined || ret.items[0].id == undefined) {
        createNewFile();
    } else {
        updateFileById(ret.items[0].id);
        alert('id = ' + ret.items[0].id);
    }
});
const boundary = '-------314159265358979323846';
const delimiter = "\r\n--" + boundary + "\r\n";
const close_delim = "\r\n--" + boundary + "--";
var file = JSON.stringify(userRecordsBase.base);
var contentType = "application/json";
var metadata = {
    'title': backupFileName,
    'mimeType': contentType,
    'parents': [{'id': 'appfolder'}]
};
var multipartRequestBody =
    delimiter +
    'Content-Type: application/json\r\n\r\n' +
    JSON.stringify(metadata) +
    delimiter +'Content-Type: ' + contentType + '\r\n' +
    '\r\n' +
    file +
    close_delim;
function createNewFile() {
    var request = gapi.client.request({
        'path': '/upload/drive/v2/files',
        'method': 'POST',
        'params': {'uploadType': 'multipart'},
        'headers': {
            'Authorization': 'Bearer ' + accessToken, 'Content-Type': 'multipart/mixed; boundary="' + boundary + '"'
        },
        'body': multipartRequestBody});
    alert('before create');
    request.execute(callback);
}

function updateFileById(id){
    var request = gapi.client.request({
        'path': '/upload/drive/v2/files/'+ id,
        'method': 'PUT',
        'params': {'uploadType': 'multipart', 'alt': 'json'},
        'headers': {
            'Authorization': 'Bearer ' + accessToken, 'Content-Type': 'multipart/mixed; boundary="' + boundary + '"'
        },
        'body': multipartRequestBody});
    alert('before update');
    request.execute(callback);
}
var callback = function(ret, raw) {
    var obj = $.parseJSON(raw);
    alert('Yahooo ' + JSON.stringify(ret));

};

}

Read file.

function restore(file, callback){
   if (file.downloadUrl) {
        var xhr = new XMLHttpRequest();
       alert('download url = ' + file.downloadUrl);
        xhr.open('GET', file.downloadUrl);
        xhr.setRequestHeader('Authorization', 'Bearer ' + accessToken);
        xhr.onload = function() {
            alert('success');
            callback(xhr);
        };
        xhr.onerror = function() {
            alert('error');
            callback(null);
        };
        xhr.send();
    } else {
        alert('error');
        callback(null);
    }
}