abstract firebase auth

Sources/App/Auth/FirebaseAuth.swift

@@ -0,0 +1,27 @@
+//
+//  File.swift
+//  
+//
+//  Created by Petr Pavlik on 21.01.2024.
+//
+
+import Vapor
+import FirebaseJWTMiddleware
+
+protocol JWTUser {
+    var userID: String { get }
+    var email: String? { get }
+}
+
+extension FirebaseJWTPayload : JWTUser {
+
+}
+
+extension Request {
+    var jwtUser: some JWTUser {
+        get async throws {
+            // This is where you can swap Firebase Auth for another JWT-based provider (Amazon Congnito, Clerk, ...)
+            try await self.firebaseJwt.asyncVerify()
+        }
+    }
+}

Sources/App/Controllers/ProfileController.swift

@@ -1,12 +1,11 @@
 import Fluent
 import Vapor
-import FirebaseJWTMiddleware
 import MixpanelVapor
 
 extension Request {
     var profile: Profile {
         get async throws {
-            let token = try await self.firebaseJwt.asyncVerify()
+            let token = try await self.jwtUser
             if let profile = try await Profile.query(on: self.db).filter(\.$firebaseUserId == token.userID).first() {
                 return profile
             } else {
@@ -29,19 +28,11 @@ struct ProfileLiteDTO: Content {
 
 extension Profile {
     func toDTO() throws -> ProfileDTO {
-        guard let id else {
-            throw Abort(.internalServerError, reason: "missing profile id")
-        }
-
-        return .init(id: id, email: email, isSubscribedToNewsletter: subscribedToNewsletterAt != nil)
+        .init(id: try requireID(), email: email, isSubscribedToNewsletter: subscribedToNewsletterAt != nil)
     }
 
     func toLiteDTO() throws -> ProfileLiteDTO {
-        guard let id else {
-            throw Abort(.internalServerError, reason: "missing profile id")
-        }
-
-        return .init(id: id, email: email)
+        .init(id: try requireID(), email: email)
     }
 }
 
@@ -59,7 +50,7 @@ struct ProfileController: RouteCollection {
     }
 
     func create(req: Request) async throws -> ProfileDTO {
-        let token = try await req.firebaseJwt.asyncVerify()
+        let token = try await req.jwtUser
         if let profile = try await Profile.query(on: req.db).filter(\.$firebaseUserId == token.userID).first() {
 
             guard let email = token.email else {