01-reducers complete

Author: brandonroberts

src/app/books/components/books-page/books-page.component.ts

@@ -1,7 +1,6 @@
 import { Component, OnInit } from '@angular/core';
 
 import { Book } from 'src/app/shared/models/book.model';
-import { BooksService } from 'src/app/shared/services/book.service';
 
 import { Observable } from 'rxjs';
 import { Store, select } from '@ngrx/store';
@@ -15,12 +14,10 @@ import { map } from 'rxjs/operators';
 })
 export class BooksPageComponent implements OnInit {
   books$: Observable<Book[]>;
-  books: Book[];
   currentBook: Book;
   total: number;
 
   constructor(
-    private booksService: BooksService,
     private store: Store<fromRoot.State>
   ) {
     this.books$ = this.store.pipe(
@@ -35,11 +32,7 @@ export class BooksPageComponent implements OnInit {
   }
 
   getBooks() {
-    this.booksService.all()
-      .subscribe(books => {
-        this.books = books;
-        this.updateTotals(books);
-      });
+    // Pending
   }
 
   updateTotals(books: Book[]) {
@@ -49,6 +42,7 @@ export class BooksPageComponent implements OnInit {
   }
 
   onSelect(book: Book) {
+    this.store.dispatch({ type: 'select', bookId: book.id });
     this.currentBook = book;
   }
 
@@ -57,6 +51,7 @@ export class BooksPageComponent implements OnInit {
   }
 
   removeSelectedBook() {
+    this.store.dispatch({ type: 'clear select' });
     this.currentBook = null;
   }  
 
@@ -69,26 +64,14 @@ export class BooksPageComponent implements OnInit {
   }
 
   saveBook(book: Book) {
-    this.booksService.create(book)
-      .subscribe(() => {
-        this.getBooks();
-        this.removeSelectedBook();
-      });
+    this.store.dispatch({ type: 'create', book });
   }
 
   updateBook(book: Book) {
-    this.booksService.update(book.id, book)
-      .subscribe(() => {
-        this.getBooks();
-        this.removeSelectedBook();
-      });
+    this.store.dispatch({ type: 'update', book });
   }
 
   onDelete(book: Book) {
-    this.booksService.delete(book.id)
-      .subscribe(() => {
-        this.getBooks();
-        this.removeSelectedBook();
-      });
+    this.store.dispatch({ type: 'delete', book });
   }
 }

src/app/shared/state/books.reducer.ts

@@ -40,7 +40,31 @@ export const initialState = {
 
 export function reducer(state = initialState, action: any): State {
   switch(action.type) {
-
+    case 'select':
+      return {
+        activeBookId: action.bookId,
+        books: state.books
+      };
+    case 'clear select':
+      return {
+        activeBookId: null,
+        books: state.books
+      };
+    case 'create':
+      return {
+        activeBookId: state.activeBookId,
+        books: createBook(state.books, action.book)
+      };
+    case 'update':
+      return {
+        activeBookId: state.activeBookId,
+        books: updateBook(state.books, action.book)
+      };
+    case 'delete':
+      return {
+        activeBookId: null,
+        books: deleteBook(state.books, action.book)
+      };   
     default:
       return state;
   }