Revamp auth module to support multiple providers linked to a single auth identity (#7521)

packages/modules/auth/integration-tests/__fixtures__/auth-identity/index.ts

@@ -1,34 +1,36 @@
+import { IAuthModuleService } from "@medusajs/types"
 import { AuthIdentity } from "@models"
-import { SqlEntityManager } from "@mikro-orm/postgresql"
 
 export async function createAuthIdentities(
-  manager: SqlEntityManager,
+  service: IAuthModuleService,
   userData: any[] = [
     {
       id: "test-id",
-      entity_id: "test-id",
-      provider: "manual",
+      provider_identities: [
+        {
+          entity_id: "test-id",
+          provider: "manual",
+        },
+      ],
     },
     {
       id: "test-id-1",
-      entity_id: "test-id-1",
-      provider: "manual",
+      provider_identities: [
+        {
+          entity_id: "test-id-1",
+          provider: "manual",
+        },
+      ],
     },
     {
-      entity_id: "test-id-2",
-      provider: "store",
+      provider_identities: [
+        {
+          entity_id: "test-id-2",
+          provider: "store",
+        },
+      ],
     },
   ]
 ): Promise<AuthIdentity[]> {
-  const authIdentities: AuthIdentity[] = []
-
-  for (const user of userData) {
-    const authIdentity = manager.create(AuthIdentity, user)
-
-    authIdentities.push(authIdentity)
-  }
-
-  await manager.persistAndFlush(authIdentities)
-
-  return authIdentities
+  return await service.create(userData)
 }

packages/modules/auth/integration-tests/__fixtures__/providers/default-provider.ts

@@ -23,10 +23,14 @@ export class AuthServiceFixtures extends AbstractAuthModuleProvider {
     try {
       authIdentity = await service.retrieve({
         entity_id: email,
-        provider: this.provider,
       })
 
-      if (authIdentity.provider_metadata?.password === password) {
+      // The provider has to be present, guaranteed by the retrieve filter above.
+      const providerIdentity = authIdentity.provider_identities?.find(
+        (pi) => pi.provider === this.provider
+      )!
+
+      if (providerIdentity.provider_metadata?.password === password) {
         return {
           success: true,
           authIdentity,
@@ -36,7 +40,6 @@ export class AuthServiceFixtures extends AbstractAuthModuleProvider {
       if (error.type === MedusaError.Types.NOT_FOUND) {
         const createdAuthIdentity = await service.create({
           entity_id: email,
-          provider: this.provider,
           provider_metadata: {
             password,
           },