Add env variables & auth.js

src/server/db/index.ts

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+import { drizzle } from "drizzle-orm/mysql2";
+import { createPool, type Pool } from "mysql2/promise";
+
+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: Pool | undefined;
+};
+
+const conn = globalForDb.conn ?? createPool({ uri: env.DATABASE_URL });
+if (env.NODE_ENV !== "production") globalForDb.conn = conn;
+
+export const db = drizzle(conn, { schema, mode: "default" });

src/server/db/schema.ts

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+// Example model schema from the Drizzle docs
+// https://orm.drizzle.team/docs/sql-schema-declaration
+
+import { sql } from "drizzle-orm";
+import {
+  bigint,
+  index,
+  mysqlTableCreator,
+  timestamp,
+  varchar,
+} from "drizzle-orm/mysql-core";
+
+/**
+ * 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 = mysqlTableCreator((name) => `tech_tracker_web_${name}`);
+
+export const posts = createTable(
+  "post",
+  {
+    id: bigint("id", { mode: "number" }).primaryKey().autoincrement(),
+    name: varchar("name", { length: 256 }),
+    createdAt: timestamp("created_at")
+      .default(sql`CURRENT_TIMESTAMP`)
+      .notNull(),
+    updatedAt: timestamp("updated_at").onUpdateNow(),
+  },
+  (example) => ({
+    nameIndex: index("name_idx").on(example.name),
+  })
+);