Created
June 10, 2020 17:22
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const deepDeleteDoc = async (store: admin.firestore.Firestore, docPath: string, batchSize: number): Promise<any> => { | |
const doc = store.doc(docPath); | |
const snap = await doc.get(); | |
if (!snap.exists) return; | |
console.log('Found doc - ' + docPath); | |
// Check if this doc has subcollections | |
const subCollections = await snap.ref.listCollections(); | |
const promises: Promise<void>[] = []; | |
if (subCollections) { | |
for (const subCollection of subCollections) { | |
console.log('Found sub collection - ' + subCollection.path); | |
const subQuery = subCollection.limit(batchSize); | |
// Delete all sub collection docs | |
promises.push(deleteQueryBatch(store, subQuery, batchSize)); | |
} | |
} | |
await Promise.all(promises); | |
console.log('All collections are done for doc and now deleting it - ' + docPath); | |
return doc.delete(); | |
} | |
const deepDeleteCollection = (store: admin.firestore.Firestore, collectionPath: string, batchSize: number): Promise<any> => { | |
const collection = store.collection(collectionPath); | |
const query = collection.limit(batchSize); | |
return deleteQueryBatch(store, query, batchSize); | |
} | |
const deleteQueryBatch = async (store: admin.firestore.Firestore, query: admin.firestore.Query, batchSize: number): Promise<any> => { | |
const snaps = await query.get(); | |
// When there are no documents left, we are done | |
if (snaps.size === 0) { | |
return; | |
} | |
const promises1: Promise<any>[] = []; | |
for (const doc of snaps.docs) { | |
// Check if this doc has subcollections | |
const subCollections = await doc.ref.listCollections(); | |
const promises2: Promise<void>[] = []; | |
if (subCollections) { | |
for (const subCollection of subCollections) { | |
console.log('Found sub collection - ' + subCollection.path); | |
const subQuery = subCollection.limit(batchSize); | |
// Delete all sub collection docs | |
promises2.push(deleteQueryBatch(store, subQuery, batchSize)); | |
} | |
} | |
await Promise.all(promises2); | |
// And delete the document only if all subcollections deleted succesfully | |
console.log('All collections are done for doc and now deleting it - ' + doc.ref.path); | |
promises1.push(doc.ref.delete()); | |
} | |
return Promise.all(promises1); | |
} |
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