Validate jwt claims

api/src/auth.ts

@@ -1,5 +1,6 @@
-import Elysia, { t } from "elysia";
+import Elysia, { getSchemaValidator, t } from "elysia";
 import { createRemoteJWKSet, jwtVerify } from "jose";
+import { KError } from "./models/error";
 
 const jwtSecret = process.env.JWT_SECRET
 	? new TextEncoder().encode(process.env.JWT_SECRET)
@@ -11,22 +12,34 @@ const jwks = createRemoteJWKSet(
 	),
 );
 
+const Jwt = t.Object({
+	sub: t.String({ description: "User id" }),
+	username: t.String(),
+	sid: t.String({ description: "Session id" }),
+});
+const validator = getSchemaValidator(Jwt);
+
 export const auth = new Elysia({ name: "auth" })
 	.guard({
-		headers: t.Object({
-			authorization: t.String({ pattern: "^Bearer .+$" }),
-		}),
+		// Those are not applied for now. See https://github.com/elysiajs/elysia/issues/1139
+		detail: {
+			security: [{ bearer: ["read"] }, { api: ["read"] }],
+		},
+		response: {
+			401: { ...KError, description: "" },
+			403: { ...KError, description: "" },
+		},
 	})
 	.macro({
 		permissions(perms: string[]) {
 			return {
-				beforeHandle: () => {},
-				resolve: async ({ headers: { authorization } }) => {
+				resolve: async ({ headers: { authorization }, error }) => {
 					const bearer = authorization?.slice(7);
 					if (!bearer) return { jwt: false };
 					// @ts-expect-error ts can't understand that there's two overload idk why
-					const { payload: jwt } = await jwtVerify(bearer, jwtSecret ?? jwks);
-					return { jwt };
+					const { payload } = await jwtVerify(bearer, jwtSecret ?? jwks);
+					// TODO: use perms
+					return { jwt: validator.Decode<typeof Jwt>(payload) };
 				},
 			};
 		},

api/src/index.ts

@@ -55,6 +55,20 @@ app
 						description: "Routes about images: posters, thumbnails...",
 					},
 				],
+				components: {
+					securitySchemes: {
+						bearer: {
+							type: "http",
+							scheme: "bearer",
+							bearerFormat: "opaque",
+						},
+						api: {
+							type: "apiKey",
+							in: "header",
+							name: "X-API-KEY",
+						},
+					},
+				},
 			},
 		}),
 	)