Init project. Set up auth & db

src/server/auth.ts

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+import { DrizzleAdapter } from "@auth/drizzle-adapter";
+import {
+  getServerSession,
+  type DefaultSession,
+  type NextAuthOptions,
+} from "next-auth";
+import { type Adapter } from "next-auth/adapters";
+import DiscordProvider from "next-auth/providers/discord";
+
+import { env } from "~/env";
+import { db } from "~/server/db";
+import {
+  accounts,
+  sessions,
+  users,
+  verificationTokens,
+} from "~/server/db/schema";
+
+/**
+ * Module augmentation for `next-auth` types. Allows us to add custom properties to the `session`
+ * object and keep type safety.
+ *
+ * @see https://next-auth.js.org/getting-started/typescript#module-augmentation
+ */
+declare module "next-auth" {
+  interface Session extends DefaultSession {
+    user: {
+      id: string;
+      // ...other properties
+      // role: UserRole;
+    } & DefaultSession["user"];
+  }
+
+  // interface User {
+  //   // ...other properties
+  //   // role: UserRole;
+  // }
+}
+
+/**
+ * Options for NextAuth.js used to configure adapters, providers, callbacks, etc.
+ *
+ * @see https://next-auth.js.org/configuration/options
+ */
+export const authOptions: NextAuthOptions = {
+  callbacks: {
+    session: ({ session, user }) => ({
+      ...session,
+      user: {
+        ...session.user,
+        id: user.id,
+      },
+    }),
+  },
+  adapter: DrizzleAdapter(db, {
+    usersTable: users,
+    accountsTable: accounts,
+    sessionsTable: sessions,
+    verificationTokensTable: verificationTokens,
+  }) as Adapter,
+  providers: [
+    DiscordProvider({
+      clientId: env.DISCORD_CLIENT_ID,
+      clientSecret: env.DISCORD_CLIENT_SECRET,
+    }),
+    /**
+     * ...add more providers here.
+     *
+     * Most other providers require a bit more work than the Discord provider. For example, the
+     * GitHub provider requires you to add the `refresh_token_expires_in` field to the Account
+     * model. Refer to the NextAuth.js docs for the provider you want to use. Example:
+     *
+     * @see https://next-auth.js.org/providers/github
+     */
+  ],
+};
+
+/**
+ * Wrapper for `getServerSession` so that you don't need to import the `authOptions` in every file.
+ *
+ * @see https://next-auth.js.org/configuration/nextjs
+ */
+export const getServerAuthSession = () => getServerSession(authOptions);

src/server/db/index.ts

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+import { drizzle } from "drizzle-orm/postgres-js";
+import postgres from "postgres";
+
+import { env } from "~/env";
+import * as schema from "./schema";
+
+/**
+ * Cache the database connection in development. This avoids creating a new connection on every HMR
+ * update.
+ */
+const globalForDb = globalThis as unknown as {
+  conn: postgres.Sql | undefined;
+};
+
+const conn = globalForDb.conn ?? postgres(env.DATABASE_URL);
+if (env.NODE_ENV !== "production") globalForDb.conn = conn;
+
+export const db = drizzle(conn, { schema });

src/server/db/schema.ts

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+import { relations, sql } from "drizzle-orm";
+import {
+  index,
+  integer,
+  pgTableCreator,
+  primaryKey,
+  serial,
+  text,
+  timestamp,
+  varchar,
+} from "drizzle-orm/pg-core";
+import { type AdapterAccount } from "next-auth/adapters";
+
+/**
+ * This is an example of how to use the multi-project schema feature of Drizzle ORM. Use the same
+ * database instance for multiple projects.
+ *
+ * @see https://orm.drizzle.team/docs/goodies#multi-project-schema
+ */
+export const createTable = pgTableCreator((name) => `gibs_website_${name}`);
+
+export const posts = createTable(
+  "post",
+  {
+    id: serial("id").primaryKey(),
+    name: varchar("name", { length: 256 }),
+    createdById: varchar("createdById", { length: 255 })
+      .notNull()
+      .references(() => users.id),
+    createdAt: timestamp("created_at", { withTimezone: true })
+      .default(sql`CURRENT_TIMESTAMP`)
+      .notNull(),
+    updatedAt: timestamp("updatedAt", { withTimezone: true }),
+  },
+  (example) => ({
+    createdByIdIdx: index("createdById_idx").on(example.createdById),
+    nameIndex: index("name_idx").on(example.name),
+  })
+);
+
+export const users = createTable("user", {
+  id: varchar("id", { length: 255 }).notNull().primaryKey(),
+  name: varchar("name", { length: 255 }),
+  email: varchar("email", { length: 255 }).notNull(),
+  emailVerified: timestamp("emailVerified", {
+    mode: "date",
+    withTimezone: true,
+  }).default(sql`CURRENT_TIMESTAMP`),
+  image: varchar("image", { length: 255 }),
+});
+
+export const usersRelations = relations(users, ({ many }) => ({
+  accounts: many(accounts),
+}));
+
+export const accounts = createTable(
+  "account",
+  {
+    userId: varchar("userId", { length: 255 })
+      .notNull()
+      .references(() => users.id),
+    type: varchar("type", { length: 255 })
+      .$type<AdapterAccount["type"]>()
+      .notNull(),
+    provider: varchar("provider", { length: 255 }).notNull(),
+    providerAccountId: varchar("providerAccountId", { length: 255 }).notNull(),
+    refresh_token: text("refresh_token"),
+    access_token: text("access_token"),
+    expires_at: integer("expires_at"),
+    token_type: varchar("token_type", { length: 255 }),
+    scope: varchar("scope", { length: 255 }),
+    id_token: text("id_token"),
+    session_state: varchar("session_state", { length: 255 }),
+  },
+  (account) => ({
+    compoundKey: primaryKey({
+      columns: [account.provider, account.providerAccountId],
+    }),
+    userIdIdx: index("account_userId_idx").on(account.userId),
+  })
+);
+
+export const accountsRelations = relations(accounts, ({ one }) => ({
+  user: one(users, { fields: [accounts.userId], references: [users.id] }),
+}));
+
+export const sessions = createTable(
+  "session",
+  {
+    sessionToken: varchar("sessionToken", { length: 255 })
+      .notNull()
+      .primaryKey(),
+    userId: varchar("userId", { length: 255 })
+      .notNull()
+      .references(() => users.id),
+    expires: timestamp("expires", {
+      mode: "date",
+      withTimezone: true,
+    }).notNull(),
+  },
+  (session) => ({
+    userIdIdx: index("session_userId_idx").on(session.userId),
+  })
+);
+
+export const sessionsRelations = relations(sessions, ({ one }) => ({
+  user: one(users, { fields: [sessions.userId], references: [users.id] }),
+}));
+
+export const verificationTokens = createTable(
+  "verificationToken",
+  {
+    identifier: varchar("identifier", { length: 255 }).notNull(),
+    token: varchar("token", { length: 255 }).notNull(),
+    expires: timestamp("expires", {
+      mode: "date",
+      withTimezone: true,
+    }).notNull(),
+  },
+  (vt) => ({
+    compoundKey: primaryKey({ columns: [vt.identifier, vt.token] }),
+  })
+);