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@Teivaz
Last active September 1, 2023 18:03
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Google Drive API V3 simple but working use case.
'use strict';
const driveUploadPath = 'https://www.googleapis.com/upload/drive/v3/files';
// 'id' is driveId - unique file id on google drive
// 'version' is driveVersion - version of file on google drive
// 'name' name of the file on google drive
// 'appProperties' keep the custom `ifid` field
const fileFields = 'id,version,name,appProperties';
function formatFileDescription(response) {
response = response || null;
if (response && !response.error) {
return {
driveId: response.id,
driveVersion: response.version,
name: response.name,
ifid: response.appProperties.ifid
};
}
else {
return {
driveId: '',
driveVersion: -1,
name: '',
ifid: ''
};
}
}
let clientLoaded = false;
module.exports = {
/**
* Loads the client. When ready isLoaded() will return true.
* Never rejects
*
* @method init
* @return {Promise}
*/
isLoaded() {
return clientLoaded;
},
/**
* Loads the client. When ready isLoaded() will return true.
* Never rejects
*
* @method init
* @return {Promise}
*/
init() {
return new Promise(resolve => {
gapi.load('client', () =>
gapi.client.load('drive', 'v3', () => {
clientLoaded = true;
resolve();
})
);
})
},
/**
* Get all stories available on the Google Drive. Never rejects
*
* @method listFiles
* @return {Promise|Array} A promise of the result that
* returns an array of file descriptions:
* [{driveId, driveVersion, name, ifid}]
*/
listFiles() {
function formatResult(response){
var stories = [];
for(var i = 0; i < response.files.length; i++) {
const file = response.files[i];
stories.push(formatFileDescription(file));
}
return stories;
};
return new Promise( (resolve, reject) => {
gapi.client.drive.files.list({
'pageSize': 300,
'fields': 'files(' + fileFields + ')',
'q': 'trashed=false'
}).execute(
(response) => resolve(formatResult(response))
);
});
},
/**
* Creates file with name and uploads data. Never rejects
*
* @method createFile
* @param {String} name Name of the new file on Google Drive
* @param {String} ifid Interactive Fiction Identifier. Internal id
* @param {String} data Data to put into the file
* @return {Promise|Object} A promise of the result that returns
* a file description: {driveId, driveVersion, name, ifid}
*/
createFile(name, ifid, data) {
// Current version of gapi.client.drive is not capable of
// uploading the file so we'll do it with more generic
// interface. This will create file with given name and
// properties in one request with multipart request.
// Some random string that is unlikely to be in transmitted data:
const boundary = '-batch-31415926579323846boundatydnfj111';
const delimiter = "\r\n--" + boundary + "\r\n";
const close_delim = "\r\n--" + boundary + "--";
const metadata = {
'mimeType': 'Content-Type: text/xml',
'name': name,
'appProperties': {ifid: ifid}
}
const multipartRequestBody =
delimiter +
'Content-Type: application/json\r\n\r\n' +
JSON.stringify(metadata) +
delimiter +
'Content-Type: text/xml\r\n\r\n' +
data +
close_delim;
return new Promise( (resolve, reject) => {
gapi.client.request({
'path': driveUploadPath,
'method': 'POST',
'params': {
'uploadType': 'multipart',
'fields': fileFields
},
'headers': {
'Content-Type': 'multipart/related; boundary="' + boundary + '"'
},
'body': multipartRequestBody,
}).then(
(response) => resolve(formatFileDescription(response.result)),
(error) => resolve(formatFileDescription())
);
});
},
/**
* Get the file description. Never rejects
*
* @method getFileDescription
* @param {String} driveId Google Drive file identifier
* @return {Promise|Object} A promise of the result that returns
* a file description: {driveId, driveVersion, name, ifid}
*/
getFileDescription(driveId) {
return new Promise( (resolve, reject) => {
gapi.client.drive.files.get({
'fileId': driveId,
'fields': fileFields,
}).execute(
(response) => resolve(formatFileDescription(response))
);
});
},
/**
* Downloads the content of the file. Can reject
*
* @method downloadFile
* @param {String} driveId Google Drive file identifier
* @return {Promise|String} A promise of the result that returns
* a file data string
*/
downloadFile(driveId) {
return new Promise( (resolve, reject) => {
gapi.client.drive.files.get({
'fileId': driveId,
'alt': 'media'
}).then(
(data) => resolve(data.body),
reject
);
});
},
/**
* Changes the name of the file on Google Drive. Can reject
*
* @method renameFile
* @param {String} driveId Google Drive file identifier
* @param {String} newName New name that will be displayed in drive
* @return {Promise|Object} A promise of the result that returns
* a file description: {driveId, driveVersion, name, ifid}
*/
renameFile(driveId, newName) {
return new Promise( (resolve, reject) => {
gapi.client.drive.files.update({
'fileId': driveId,
'name': newName,
'fields': fileFields
}).then(
(response) => resolve(formatFileDescription(response.result)),
reject
);
});
},
/**
* Removes file completely from drive. Can reject
*
* @method deleteFile
* @param {String} driveId Google Drive file identifier
* @return {Promise} A promise of the result
*/
deleteFile(driveId) {
return new Promise( (resolve, reject) => {
gapi.client.drive.files.delete({
'fileId': driveId
}).then(resolve, reject);
});
},
/**
* Replaces the file content with newData. Can reject
*
* @method updateFile
* @param {String} driveId Google Drive file identifier
* @param {String} newData Data to put into the file
* @return {Promise|Object} A promise of the result that returns
* a story description: {driveId, driveVersion, name, ifid}
*/
updateFile(driveId, newData) {
return new Promise( (resolve, reject) => {
gapi.client.request({
'path': driveUploadPath+'/'+driveId,
'method': 'PATCH',
'params': {'uploadType': 'media', 'fields': fileFields},
'body': newData
}).then(
(response) => resolve(formatFileDescription(response.result)),
reject
);
});
}
};
@noedelorme
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Hi there ! Can you be more precise about the way to use it pls ? I thank you a lot.

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