// src/firestore.ts
import admin from "firebase-admin";
let initialized = false;
export function getFirestore() {
if (!initialized) {
const projectId = process.env.FIREBASE_PROJECT_ID || "local-todo-dev";
// When using emulator for dev, you do NOT need a real service account.
// firebase-admin will work with only a projectId when FIRESTORE_EMULATOR_HOST is set.
if (process.env.FIRESTORE_EMULATOR_HOST) {
console.error(
`[firestore] Using emulator at ${process.env.FIRESTORE_EMULATOR_HOST} (projectId=${projectId})`
);
admin.initializeApp({
projectId,
});
} else {
// Production/real use: service account
if (!process.env.FIREBASE_SERVICE_ACCOUNT) {
console.error(
"Missing FIREBASE_SERVICE_ACCOUNT env var (base64-encoded JSON service account)"
);
process.exit(1);
}
const decoded = JSON.parse(
Buffer.from(process.env.FIREBASE_SERVICE_ACCOUNT, "base64").toString()
);
admin.initializeApp({
credential: admin.credential.cert(decoded),
projectId: decoded.project_id || projectId,
});
}
initialized = true;
}
return admin.firestore();
}
