refactor(stores): standardize state machine structure

src/stores/auth/machine/setup.ts

@@ -0,0 +1,72 @@
+import { setup, type ActionFunction, type EventObject } from "xstate";
+
+import type { AuthEvent } from "../auth-events";
+import type { AuthState } from "../auth-state";
+import {
+  emailLoginActor,
+  emailRegisterThenLoginActor,
+} from "./actors/credentials";
+import { bindFacebookIdentityActor } from "./actors/identity";
+import {
+  oauthSignInActor,
+  syncFacebookBackendActor,
+  syncGoogleBackendActor,
+} from "./actors/oauth";
+import {
+  checkAuthStatusActor,
+  guestLoginActor,
+  logoutActor,
+} from "./actors/session";
+
+export const baseAuthMachineSetup = setup({
+  types: {
+    context: {} as AuthState,
+    events: {} as AuthEvent,
+  },
+  actors: {
+    emailLogin: emailLoginActor,
+    emailRegisterThenLogin: emailRegisterThenLoginActor,
+    oauthSignIn: oauthSignInActor,
+    syncGoogleBackend: syncGoogleBackendActor,
+    syncFacebookBackend: syncFacebookBackendActor,
+    guestLogin: guestLoginActor,
+    checkAuthStatus: checkAuthStatusActor,
+    bindFacebookIdentity: bindFacebookIdentityActor,
+    logout: logoutActor,
+  },
+  guards: {
+    canSubmitGuestLogin: ({ context }) =>
+      context.loginStatus === "notLoggedIn",
+    canLogoutToGuest: ({ context }) =>
+      context.loginStatus !== "notLoggedIn" &&
+      context.loginStatus !== "guest",
+  },
+});
+
+type AuthActorAction<TEvent extends EventObject> = ActionFunction<
+  AuthState,
+  TEvent,
+  AuthEvent,
+  undefined,
+  never,
+  never,
+  never,
+  never,
+  never
+>;
+
+export function createAuthActorActionSetup<TEvent extends EventObject>() {
+  const actorActionSetup = setup({
+    types: {
+      context: {} as AuthState,
+      events: {} as TEvent,
+    },
+  });
+  return {
+    assign(
+      assignment: Parameters<typeof actorActionSetup.assign>[0],
+    ): AuthActorAction<TEvent> {
+      return actorActionSetup.assign(assignment) as unknown as AuthActorAction<TEvent>;
+    },
+  };
+}