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Fix onDelete listener and add subcollection deletion functionality #8

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Fix onDelete listener and add subcollection deletion functionality #8

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df5c5dc
fix onDelete listener
byildiz Oct 25, 2019
3d73774
Add subcollection deletion functionality
byildiz Oct 25, 2019
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49 changes: 33 additions & 16 deletions functions/index.js
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Original file line number Diff line number Diff line change
Expand Up @@ -36,8 +36,8 @@ const exportDataBucket = userPrivacyPaths.exportDataUploadBucket;
// returns a success message.
//
// Triggered by a user deleting their account.
exports.clearData = functions.auth.user().onDelete((event) => {
const uid = event.data.uid;
exports.clearData = functions.auth.user().onDelete((user) => {
const uid = user.uid;

const databasePromise = clearDatabaseData(uid);
const storagePromise = clearStorageData(uid);
Expand Down Expand Up @@ -105,20 +105,37 @@ const clearFirestoreData = (uid) => {
for (let i = 0; i < paths.length; i++) {
const entry = paths[i];
const entryCollection = replaceUID(entry.collection, uid);
const entryDoc = replaceUID(entry.doc, uid);
const docToDelete = firestore.collection(entryCollection).doc(entryDoc);
if ('field' in entry) {
const entryField = replaceUID(entry.field, uid);
const update = {};
update[entryField] = FieldValue.delete();
promises.push(docToDelete.update(update).catch((err) => {
console.error('Error deleting field: ', err);
}));
} else if (docToDelete) {
promises.push(docToDelete.delete().catch((err) => {
console.error('Error deleting document: ', err);
}));
};
if ('doc' in entry) {
const entryDoc = replaceUID(entry.doc, uid);
const docToDelete = firestore.collection(entryCollection).doc(entryDoc);
if ('field' in entry) {
const entryField = replaceUID(entry.field, uid);
const update = {};
update[entryField] = FieldValue.delete();
promises.push(docToDelete.update(update).catch((err) => {
console.error('Error deleting field: ', err);
}));
} else if (docToDelete) {
promises.push(docToDelete.delete().catch((err) => {
console.error('Error deleting document: ', err);
}));
};
} else {
promises.push(
firestore
.collection(entryCollection)
.get()
.then(querySnapshot => {
const deletionPromises = [];
querySnapshot.forEach(docSnapshot => {
deletionPromises.push(docSnapshot.ref.delete().catch((err) => {
console.error('Error deleting document: ', err);
}));
});
return Promise.all(deletionPromises);
})
);
}
};

return Promise.all(promises).then(() => uid);
Expand Down
1 change: 1 addition & 0 deletions functions/user_privacy.json
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Original file line number Diff line number Diff line change
Expand Up @@ -13,6 +13,7 @@
"firestore": {
"clearData": [
{"collection": "users", "doc": "UID_VARIABLE", "field": "name"},
{"collection": "users/UID_VARIABLE/likes"},
{"collection": "users", "doc": "UID_VARIABLE"},
{"collection": "admins", "doc": "UID_VARIABLE"}
],
Expand Down