feat(auth): Revamp authentication setup (#7387)

* chore: Clean up authentication middlewares

* chore: Rename AuthUser to AuthIdentity

* feat: Define link between user, customer, and auth identity

* feat: Use links for auth, update auth context content

* fix: Adjust user create command with new auth setup

* fix: Make auth login more dynamic, review fixes

* fix: Change test assertions for created by

integration-tests/helpers/create-admin-user.ts

@@ -1,8 +1,8 @@
-import { ModuleRegistrationName } from "@medusajs/modules-sdk"
-import { IAuthModuleService } from "@medusajs/types"
+import { ModuleRegistrationName, Modules } from "@medusajs/modules-sdk"
+import { IAuthModuleService, IUserModuleService } from "@medusajs/types"
 import jwt from "jsonwebtoken"
 import { getContainer } from "../environment-helpers/use-container"
-import adminSeeder from "./admin-seeder"
+import { ContainerRegistrationKeys } from "@medusajs/utils"
 
 export const adminHeaders = {
   headers: { "x-medusa-access-token": "test_token" },
@@ -13,26 +13,53 @@ export const createAdminUser = async (
   adminHeaders,
   container?
 ) => {
-  const { password_hash } = await adminSeeder(dbConnection)
   const appContainer = container ?? getContainer()!
 
+  const userModule: IUserModuleService = appContainer.resolve(
+    ModuleRegistrationName.USER
+  )
   const authModule: IAuthModuleService = appContainer.resolve(
     ModuleRegistrationName.AUTH
   )
-  if (authModule) {
-    const authUser = await authModule.create({
-      provider: "emailpass",
-      entity_id: "admin@medusa.js",
-      scope: "admin",
-      app_metadata: {
-        user_id: "admin_user",
-      },
-      provider_metadata: {
-        password: password_hash,
-      },
-    })
+  const remoteLink = appContainer.resolve(ContainerRegistrationKeys.REMOTE_LINK)
 
-    const token = jwt.sign(authUser, "test")
-    adminHeaders.headers["authorization"] = `Bearer ${token}`
-  }
+  const user = await userModule.create({
+    first_name: "Admin",
+    last_name: "User",
+    email: "admin@medusa.js",
+  })
+
+  const authIdentity = await authModule.create({
+    provider: "emailpass",
+    entity_id: "admin@medusa.js",
+    scope: "admin",
+    provider_metadata: {
+      password: "somepassword",
+    },
+  })
+
+  // Ideally we simulate a signup process than manually linking here.
+  await remoteLink.create([
+    {
+      [Modules.USER]: {
+        user_id: user.id,
+      },
+      [Modules.AUTH]: {
+        auth_identity_id: authIdentity.id,
+      },
+    },
+  ])
+
+  const token = jwt.sign(
+    {
+      actor_id: user.id,
+      actor_type: "user",
+      auth_identity_id: authIdentity.id,
+      scope: "admin",
+      app_metadata: {},
+    },
+    "test"
+  )
+
+  adminHeaders.headers["authorization"] = `Bearer ${token}`
 }