feat: new user resource integrating postgresql

server/resources/user/UserCollection.ts

@@ -0,0 +1,50 @@
+import * as bcrypt from "bcrypt";
+import { StoccaTreDbConn, WithoutId } from "../../database.ts";
+import { UserModel } from "./UserModel.ts";
+import { Maybe } from "../../Maybe.ts";
+
+export default class UserCollection {
+    private db: StoccaTreDbConn;
+    private mapById: Map<number, UserModel> = new Map<number, UserModel>();
+
+    constructor(database: StoccaTreDbConn) {
+        this.db = database;
+    }
+
+    async addUser(user: WithoutId<UserModel>): Promise<Maybe<{ insertedId: number }>> {
+        let hash: string;
+        try {
+            hash = await bcrypt.hash(user.password);
+        } catch (e: unknown) {
+            const error = e as { message?: string };
+            if (typeof error.message === "string") {
+                return { error: { message: error.message }};
+            }
+            return { error: new Error("Failed to create user") };
+        }
+        user.password = hash;
+        const result: Maybe<UserModel[]> = await this.db.query(sql => sql`
+            INSERT INTO users ${ sql(user, "displayName") }
+            RETURNING *
+        `);
+        if (result.error) {
+            return result;
+        }
+        return {
+            just: { insertedId: result.just[0]?.id ?? NaN }
+        }
+
+    }
+
+    async getAllUsers(): Promise<Maybe<UserModel[]>> {
+        const result = await this.db.query((sql) => sql<UserModel[]>`SELECT * FROM users`);
+        if (!result.error) {
+            result.just.forEach(user => this.mapById.set(user.id, user));
+        } else {
+            return result;
+        }
+        return {
+            just: Array.from(this.mapById.values()),
+        };
+    }
+}

server/resources/user/UserModel.ts

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+import { z } from "zod";
+
+export const UserSchema = z.object({
+    id: z.number(),
+    displayName: z.string(),
+    email: z.string().email(),
+    password: z.string().min(256).max(256),
+});
+
+export const UserSchemaWithoutId = UserSchema.omit({ id: true });
+
+export type UserModel = z.infer<typeof UserSchema>;

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),
+            },
+        };
+    }
+}

server/resources/user/main.ts

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+export * from "./UserModel.ts";
+export * from "./UserCollection.ts";
+export * from "./UserResource.ts";