feat: new user resource integrating postgresql

server/resources/user/UserResource.ts

@@ -0,0 +1,56 @@
+import {StoccaTreDbConn} from "../../database.ts";
+import StoccaTreRequest, {RouteDefinition} from "../../StoccaTreRequest.ts";
+import {Maybe} from "../../Maybe.ts";
+import {JSONObject} from "../../JSON.ts";
+import UserCollection from "./UserCollection.ts";
+import {UserSchemaWithoutId} from "./UserModel.ts";
+
+export default class UserResource {
+    private dbConnection: StoccaTreDbConn;
+    private collection: UserCollection;
+    private routes: Readonly<Record<string, RouteDefinition>> = {
+        Add: {
+            pattern: /\/add/,
+            method: "POST"
+        },
+        GetAll: {
+            pattern: /\/all/,
+            method: "GET"
+        },
+    } as const;
+
+    constructor(dbConnection: StoccaTreDbConn) {
+        this.dbConnection = dbConnection;
+        this.collection = new UserCollection(dbConnection);
+    }
+
+    async handleRequest(request: StoccaTreRequest): Promise<Maybe<JSONObject>> {
+        if (request.match(this.routes.Add)) {
+            return await this.addUser(request);
+        }
+        if (request.match(this.routes.GetAll)) {
+            return await this.allUsers(request);
+        }
+        return { error: { message: "Invalid route" }};
+    }
+
+    private async addUser(request: StoccaTreRequest): Promise<Maybe<{ insertedId: number }>> {
+        const user = UserSchemaWithoutId.safeParse(JSON.parse(request.body ?? "{}"));
+        if (!user.success) {
+            return { error: new Error("Ingredient was malformed.") };
+        }
+        return await this.collection.addUser(user.data);
+    }
+
+    private async allUsers(request: StoccaTreRequest): Promise<Maybe<JSONObject>> {
+        const allUsers = await this.collection.getAllUsers();
+        if (allUsers.error) {
+            return allUsers;
+        }
+        return {
+            just: {
+                ingredients: Array.from(allUsers.just),
+            },
+        };
+    }
+}