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entries.ts
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entries.ts
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import * as admin from 'firebase-admin';
import * as functions from 'firebase-functions';
import { ContentEntry } from '../src/app/services/content-entry.service';
import { ContentType } from '../src/app/services/content-type.service';
export const countEntryStatus = functions.firestore.document('tanam-entries/{documentId}').onWrite((change, context) => {
const entryBefore = change.before.data() as ContentEntry;
const entryAfter = change.after.data() as ContentEntry;
if (change.before.exists && change.after.exists && entryAfter.status === entryBefore.status) {
console.log(`Document status unchanged. No counters updated.`);
return null;
}
const contentTypeRef = admin.firestore().collection('tanam-types').doc(entryBefore.contentType);
return admin.firestore().runTransaction(async (trx) => {
const trxDoc = await trx.get(contentTypeRef);
const trxContentType = trxDoc.data() as ContentType;
console.log(`Num ${entryBefore.contentType} entries before: ${JSON.stringify(trxContentType.numEntries)}`);
if (change.before.exists) {
trxContentType.numEntries[entryBefore.status] -= 1;
}
if (change.after.exists) {
trxContentType.numEntries[entryAfter.status] += 1;
}
console.log(`Num ${entryBefore.contentType} entries after: ${JSON.stringify(trxContentType.numEntries)}`);
trx.set(contentTypeRef, trxContentType);
});
});
export const saveRevision = functions.firestore.document('tanam-entries/{documentId}').onUpdate((change) => {
const entryBefore = change.before.data() as ContentEntry;
console.log(`Saving revision ${entryBefore.revision} of ${change.before.ref.path}`);
return change.before.ref.collection('revisions').doc(`${entryBefore.id}+${entryBefore.revision}`).set(entryBefore);
});
export const deleteRevisions = functions.firestore.document('tanam-entries/{documentId}').onDelete(async (snap) => {
console.log(`Deleting all revisions of ${snap.ref.path}`);
const revs = await snap.ref.collection('revisions').get();
const promises = [];
const batchDeletes = [];
for (let i = 0; i < revs.docs.length; i++) {
const doc = revs.docs[i];
if ((i % 500) === 0) {
batchDeletes.push(admin.firestore().batch());
}
const batchNum = batchDeletes.length - 1;
console.log(`Batch delete #${batchNum} (${i + 1}/500): ${doc.id}`);
batchDeletes[batchNum].delete(doc.ref);
}
batchDeletes.forEach((batchWrite) => {
promises.push(batchWrite.commit());
});
return Promise.all(promises);
});