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

packages/modules/auth/src/models/provider-identity.ts

@@ -0,0 +1,84 @@
+import {
+  BeforeCreate,
+  Entity,
+  ManyToOne,
+  OnInit,
+  PrimaryKey,
+  Property,
+} from "@mikro-orm/core"
+
+import {
+  createPsqlIndexStatementHelper,
+  generateEntityId,
+} from "@medusajs/utils"
+import AuthIdentity from "./auth-identity"
+
+const providerEntityIdIndexName = "IDX_provider_identity_provider_entity_id"
+const providerEntityIdIndexStatement = createPsqlIndexStatementHelper({
+  name: providerEntityIdIndexName,
+  tableName: "provider_identity",
+  columns: ["entity_id", "provider"],
+  unique: true,
+})
+
+const authIdentityIndexName = "IDX_provider_identity_auth_identity_id"
+const authIdentityIndexStatement = createPsqlIndexStatementHelper({
+  name: authIdentityIndexName,
+  tableName: "provider_identity",
+  columns: ["auth_identity_id"],
+})
+
+@Entity()
+@providerEntityIdIndexStatement.MikroORMIndex()
+@authIdentityIndexStatement.MikroORMIndex()
+export default class ProviderIdentity {
+  @PrimaryKey({ columnType: "text" })
+  id!: string
+
+  @Property({ columnType: "text" })
+  entity_id: string
+
+  @Property({ columnType: "text" })
+  provider: string
+
+  @ManyToOne(() => AuthIdentity, {
+    columnType: "text",
+    fieldName: "auth_identity_id",
+    mapToPk: true,
+    onDelete: "cascade",
+  })
+  auth_identity_id: string
+
+  @ManyToOne(() => AuthIdentity, {
+    persist: false,
+  })
+  auth_identity: AuthIdentity
+
+  @Property({ columnType: "jsonb", nullable: true })
+  user_metadata: Record<string, unknown> | null
+
+  @Property({ columnType: "jsonb", nullable: true })
+  provider_metadata: Record<string, unknown> | null = null
+
+  @Property({
+    onCreate: () => new Date(),
+    columnType: "timestamptz",
+    defaultRaw: "now()",
+  })
+  created_at: Date
+
+  @Property({
+    onCreate: () => new Date(),
+    onUpdate: () => new Date(),
+    columnType: "timestamptz",
+    defaultRaw: "now()",
+  })
+  updated_at: Date
+
+  @BeforeCreate()
+  @OnInit()
+  onCreate() {
+    this.id = generateEntityId(this.id, "provid")
+    this.auth_identity_id ??= this.auth_identity?.id ?? null
+  }
+}