Use Azure auth for no good reason

packages/backend/src/services/db.ts

@@ -0,0 +1,31 @@
+import { Cause, Context, Effect, Layer, pipe } from "effect";
+import { Kysely } from "kysely";
+import { Database } from "../database";
+
+export interface Executable<O> {
+	execute(): Promise<O[]>;
+	executeTakeFirst(): Promise<O | undefined>;
+}
+
+export interface DbInterface {
+	readonly db: Kysely<Database>;
+	readonly execute: <O>(executable: Executable<O>) => Effect.Effect<readonly O[]>;
+	readonly executeTakeFirst: <O>(executable: Executable<O>) => Effect.Effect<O, Cause.NoSuchElementException>;
+	readonly executeTakeFirstOrDefect: <O>(executable: Executable<O>) => Effect.Effect<O>;
+}
+
+export class Db extends Context.Tag("Db")<Db, DbInterface>() { }
+
+export const DbFromInstance = (db: Kysely<Database>) => Layer.succeed(Db, Object.freeze<DbInterface>({
+	db,
+	execute: (executable) => Effect.promise(() => Object.freeze(executable.execute())),
+	executeTakeFirst: (executable) => pipe(
+		Effect.promise(() => executable.executeTakeFirst()),
+		Effect.flatMap(Effect.fromNullable),
+	),
+	executeTakeFirstOrDefect: (executable) => pipe(
+		Effect.promise(() => executable.executeTakeFirst()),
+		Effect.flatMap(Effect.fromNullable),
+		Effect.orDie,
+	),
+}));

packages/backend/src/services/session.ts

@@ -0,0 +1,6 @@
+import { SessionId } from "common";
+import { Context, Layer } from "effect";
+
+export class Session extends Context.Tag("Session")<Session, SessionId>() { }
+
+export const SessionFromValue = Layer.succeed(Session);