Converted from MongoDB to storage-based database.

- Removed MongoDB.
- Converted to storage based database that was first prototyped
in another repo.
- Separated out asset metadata for the db fixture into separate
metadata files.
- Started handling async errors in Express route handlers explicitly
to make it easier to find problems when running tests.
- Introduced an abstract for the database to make it easier to write
tests.

backend/.vscode/settings.json

@@ -0,0 +1,3 @@
+{
+    "typescript.tsdk": "node_modules\\typescript\\lib"
+}

backend/package.json

@@ -5,12 +5,10 @@
     "main": "build/index.js",
     "scripts": {
         "start": "node build/index.js",
-        "start:dev": "npm run clean-uploads && npm run copy-uploads && concurrently \"npm run start-db-with-fixture\" \"npm run start-with-dev-db\"",
-        "start:dev:nodb": "npm run clean-uploads && concurrently \"npm run start-db-empty\" \"npm run start-with-dev-db\"",
-        "start-db-with-fixture": "insta-mongo --db-port=7001 --rest-port=7000 --load=50-assets --fixtures=../fixtures --db=photosphere",
-        "start-db-empty": "insta-mongo --db-port=7001 --rest-port=7000 --fixtures=../fixtures",
-        "start-with-dev-db": "cross-env PORT=3000 DB_CONNECTION_STRING=mongodb://localhost:7001 ts-node-dev --respawn src/index.ts",
-        "start-for-e2e-tests": "npm run clean-uploads && concurrently \"npm run start-db-empty\" \"npm run start-with-dev-db\"",
+        "start:dev": "npm run clean-uploads && npm run copy-uploads && npm run start-watch",
+        "start:dev-no-uploads": "npm run clean-uploads && npm run start-watch",
+        "start-watch": "cross-env PORT=3000 ts-node-dev --respawn src/index.ts",
+        "start-for-e2e-tests": "npm run clean-uploads && npm run start:dev-no-uploads",
         "build": "npm install --production=false && npm run compile",
         "compile": "tsc",
         "compile:watch": "tsc --watch",
@@ -28,23 +26,24 @@
         "@types/express": "^4.17.16",
         "@types/fs-extra": "^11.0.1",
         "@types/jest": "^29.4.0",
-        "@types/node": "^18.11.18",
+        "@types/node": "^18.19.15",
+        "@types/uuid": "^9.0.8",
         "axios": "^0.27.2",
         "concurrently": "^7.2.2",
         "cross-env": "^7.0.3",
         "fs-extra": "^11.1.0",
-        "insta-mongo": "^0.0.6",
         "jest": "^29.4.1",
         "nodemon": "^2.0.16",
+        "supertest": "^6.3.3",
         "ts-jest": "^29.0.5",
         "ts-node-dev": "^2.0.0",
-        "typescript": "^4.9.4"
+        "typescript": "^5.3.3"
     },
     "dependencies": {
         "aws-sdk": "^2.1313.0",
         "cors": "^2.8.5",
         "dayjs": "^1.11.7",
         "express": "^5.0.0-beta.1",
-        "mongodb": "^4.7.0"
+        "uuid": "^9.0.1"
     }
 }

backend/src/index.ts

@@ -1,6 +1,6 @@
-import { MongoClient } from "mongodb";
 import { createServer } from "./server";
 import { CloudStorage } from "./services/cloud-storage";
+import { Database } from "./services/database";
 import { FileStorage } from "./services/file-storage";
 
 async function main() {
@@ -12,19 +12,11 @@ async function main() {
         throw new Error(`Set environment variable PORT.`);
     }
 
-    const DB_CONNECTION_STRING = process.env.DB_CONNECTION_STRING;
-    if (DB_CONNECTION_STRING === undefined) {
-        throw new Error(`Set environment variable DB_CONNECTION_STRING.`);
-    }
-
-    const client = new MongoClient(DB_CONNECTION_STRING);
-    await client.connect();
-
-    const db = client.db(dbName);
     const storage = process.env.NODE_ENV === "production"
         ? new CloudStorage()
         : new FileStorage();
-    const app = await createServer(db, () => new Date(Date.now()), storage);
+    const database = new Database(storage);
+    const app = await createServer(() => new Date(Date.now()), database, storage);
 
     app.listen(PORT, () => {
         console.log(`Photosphere listening on port ${PORT}`);

backend/src/lib/asset.ts

@@ -1,14 +1,16 @@
-import { ObjectId } from "mongodb";
-
 //
 // Represents an asset that has been uploaded to the backend.
 //
+
+//
+// Full asset data.
+//
 export interface IAsset {
 
     //
     // Unique ID of the asset in the database.
     //
-    _id: ObjectId;
+    _id: string;
 
     //
     // The original name of the asset before it was uploaded.
@@ -84,9 +86,4 @@ export interface IAsset {
     // Description of the asset, once the user has set it.
     //
     description?: string;
-
-    //
-    // Text to search for the asset.
-    //
-    searchText?: string;
 }