fix(core): Fix state initialization, hash detection, and validation - v2.0.25

ts/smartstate.classes.statepart.ts

@@ -4,7 +4,7 @@ import { StateAction, type IActionDef } from './smartstate.classes.stateaction.j
 export class StatePart<TStatePartName, TStatePayload> {
   public name: TStatePartName;
   public state = new plugins.smartrx.rxjs.Subject<TStatePayload>();
-  public stateStore: TStatePayload;
+  public stateStore: TStatePayload | undefined;
   private cumulativeDeferred = plugins.smartpromise.cumulativeDefer();
 
   private webStoreOptions: plugins.webstore.IWebStoreOptions;
@@ -27,9 +27,9 @@ export class StatePart<TStatePartName, TStatePayload> {
       this.webStore = new plugins.webstore.WebStore<TStatePayload>(this.webStoreOptions);
       await this.webStore.init();
       const storedState = await this.webStore.get(String(this.name));
-      if (storedState) {
+      if (storedState && this.validateState(storedState)) {
         this.stateStore = storedState;
-        this.notifyChange();
+        await this.notifyChange();
       }
     }
   }
@@ -37,7 +37,7 @@ export class StatePart<TStatePartName, TStatePayload> {
   /**
    * gets the state from the state store
    */
-  public getState(): TStatePayload {
+  public getState(): TStatePayload | undefined {
     return this.stateStore;
   }
 
@@ -46,8 +46,13 @@ export class StatePart<TStatePartName, TStatePayload> {
    * @param newStateArg
    */
   public async setState(newStateArg: TStatePayload) {
+    // Validate state structure
+    if (!this.validateState(newStateArg)) {
+      throw new Error(`Invalid state structure for state part '${this.name}'`);
+    }
+    
     this.stateStore = newStateArg;
-    this.notifyChange();
+    await this.notifyChange();
     
     // Save state to WebStore if initialized
     if (this.webStore) {
@@ -56,21 +61,34 @@ export class StatePart<TStatePartName, TStatePayload> {
     return this.stateStore;
   }
 
+  /**
+   * Validates state structure - can be overridden for custom validation
+   * @param stateArg
+   */
+  protected validateState(stateArg: any): stateArg is TStatePayload {
+    // Basic validation - ensure state is not null/undefined
+    // Subclasses can override for more specific validation
+    return stateArg !== null && stateArg !== undefined;
+  }
+
   /**
    * notifies of a change on the state
    */
-  public notifyChange() {
-    const createStateHash = (stateArg: any) => {
-      return plugins.smarthashWeb.sha256FromString(plugins.smartjson.stringify(stateArg));
+  public async notifyChange() {
+    if (!this.stateStore) {
+      return;
+    }
+    const createStateHash = async (stateArg: any) => {
+      return await plugins.smarthashWeb.sha256FromString(plugins.smartjson.stringify(stateArg));
     };
+    const currentHash = await createStateHash(this.stateStore);
     if (
-      this.stateStore &&
       this.lastStateNotificationPayloadHash &&
-      createStateHash(this.stateStore) === this.lastStateNotificationPayloadHash
+      currentHash === this.lastStateNotificationPayloadHash
     ) {
       return;
     } else {
-      this.lastStateNotificationPayloadHash = this.stateStore;
+      this.lastStateNotificationPayloadHash = currentHash;
     }
     this.state.next(this.stateStore);
   }
@@ -81,7 +99,11 @@ export class StatePart<TStatePartName, TStatePayload> {
    */
   public notifyChangeCumulative() {
     // TODO: check viability
-    setTimeout(() => this.state.next(this.stateStore), 0);
+    setTimeout(async () => {
+      if (this.stateStore) {
+        await this.notifyChange();
+      }
+    }, 0);
   }
 
   /**
@@ -95,6 +117,7 @@ export class StatePart<TStatePartName, TStatePayload> {
     }
     const mapped = this.state.pipe(
       plugins.smartrx.rxjs.ops.startWith(this.getState()),
+      plugins.smartrx.rxjs.ops.filter((stateArg): stateArg is TStatePayload => stateArg !== undefined),
       plugins.smartrx.rxjs.ops.map((stateArg) => {
         try {
           return selectorFn(stateArg);