update and delete

backend/blog/controller.go

@@ -4,11 +4,13 @@ import (
 	"encoding/json"
 	"fmt"
 	"net/http"
+	"strconv"
 
 	"git.schreifuchs.ch/schreifuchs/ng-blog/backend/model"
+	"github.com/gorilla/mux"
 )
 
-func (s Service) CreatePost(w http.ResponseWriter, r *http.Request) {
+func (s Service) SavePost(w http.ResponseWriter, r *http.Request) {
 	var post model.Post
 	if err := json.NewDecoder(r.Body).Decode(&post); err != nil {
 		w.WriteHeader(http.StatusBadRequest)
@@ -37,3 +39,23 @@ func (s Service) GetAllPosts(w http.ResponseWriter, r *http.Request) {
 	json.NewEncoder(w).Encode(&posts)
 	w.WriteHeader(http.StatusOK)
 }
+
+func (s Service) DeletePost(w http.ResponseWriter, r *http.Request) {
+	idStr, ok := mux.Vars(r)["postID"]
+	if !ok {
+		w.WriteHeader(http.StatusNotFound)
+		return
+	}
+	id, err := strconv.Atoi(idStr)
+	if err != nil {
+		w.WriteHeader(http.StatusNotFound)
+		return
+	}
+
+	err = s.db.Delete(&model.Post{}, id).Error
+	if err != nil {
+		w.WriteHeader(http.StatusInternalServerError)
+		fmt.Fprint(w, err.Error())
+	}
+	w.WriteHeader(http.StatusNoContent)
+}

backend/main.go

@@ -30,7 +30,9 @@ func main() {
 	r := mux.NewRouter()
 	r.Use(cors.HandlerForOrigin("*"))
 	r.Handle("/login", auth.Login(user, password, []byte(secret))).Methods("POST")
-	r.Handle("/posts", auth.Authenticated([]byte(secret))(blg.CreatePost)).Methods("POST")
+	r.Handle("/posts", auth.Authenticated([]byte(secret))(blg.SavePost)).Methods("POST")
+	r.Handle("/posts", auth.Authenticated([]byte(secret))(blg.SavePost)).Methods("PUT")
+	r.Handle("/posts/{postID}", auth.Authenticated([]byte(secret))(blg.DeletePost)).Methods("DELETE")
 	r.Handle("/posts", http.HandlerFunc(blg.GetAllPosts)).Methods("GET")
 	r.Methods("OPTIONS").HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		// The CORS middleware should set up the headers for you

frontend/src/app/app.routes.ts

@@ -5,6 +5,7 @@ import { AdminComponent } from './routes/admin/admin.component';
 import { LoggedInGuard } from './shared/guards/logged-in.guard';
 import { PostEditorComponent } from './components/post-editor/post-editor.component';
 import { CreatePostComponent } from './routes/post/create-post/create-post.component';
+import { UpdatePostComponent } from './routes/post/update-post/update-post.component';
 
 export const routes: Routes = [
   { path: '', component: HomeComponent },
@@ -12,7 +13,11 @@ export const routes: Routes = [
     path: 'post',
     children: [
       { path: 'new', component: CreatePostComponent },
-      { path: ':id', component: PostComponent },
+      { path: ':id/edit', component: UpdatePostComponent },
+      {
+        path: ':id',
+        component: PostComponent,
+      },
     ],
   },
   { path: 'admin', component: AdminComponent, canActivate: [LoggedInGuard] },

frontend/src/app/routes/admin/admin.component.html

@@ -12,9 +12,23 @@
 <section class="grid grid-cols-1 gap-5 m-5">
   <article
     *ngFor="let post of posts()"
-    class="p-5 flex flex-col items-start rounded-s bg-white drop-shadow-md hover:drop-shadow-lg"
+    class="p-5 grid grid-cols-5 grid-rows-3 items-start rounded-s bg-white drop-shadow-md hover:drop-shadow-lg"
   >
-    <h3 class="text-xl">{{ post.title }}</h3>
-    <p><strong>TL;DR; </strong>{{ post.tldr }}</p>
+    <h3 class="text-xl col-span-4">{{ post.title }}</h3>
+    <p class="col-start-1 col-span-4 row-start-2 row-span-2">
+      <strong>TL;DR; </strong>{{ post.tldr }}
+    </p>
+    <a
+      [routerLink]="`/post/${post.id}/edit`"
+      class="col-start-5 row-start-1 bg-amber-400 rounded-full p-1 px-5 hover:bg-amber-500 active:bg-amber-600 transition-colors text-center"
+    >
+      Edit
+    </a>
+    <button
+      (click)="delete(post.id)"
+      class="col-start-5 row-start-3 bg-orange-400 rounded-full p-1 px-5 hover:bg-amber-500 active:bg-orange-600 transition-colors"
+    >
+      Delete
+    </button>
   </article>
 </section>

frontend/src/app/routes/admin/admin.component.ts

@@ -11,5 +11,10 @@ import { RouterLink, RouterOutlet } from '@angular/router';
   templateUrl: './admin.component.html',
 })
 export class AdminComponent {
-  posts = inject(PostsService).getPosts();
+  private postsService = inject(PostsService);
+  posts = this.postsService.getPosts();
+
+  delete(id: number) {
+    this.postsService.deletePost(id);
+  }
 }

frontend/src/app/routes/post/update-post/update-post.component.html

@@ -0,0 +1,10 @@
+<div class="flex items-center justify-between mb-5">
+  <h1 class="text-3xl">Update a Post</h1>
+  <button
+    class="bg-amber-400 rounded-full p-1 px-5 hover:bg-amber-500 active:bg-amber-600 transition-colors"
+    (click)="save()"
+  >
+    save
+  </button>
+</div>
+<app-post-editor [post]="post" (postChange)="post.set($event)" />

frontend/src/app/routes/post/update-post/update-post.component.spec.ts

@@ -0,0 +1,23 @@
+import { ComponentFixture, TestBed } from '@angular/core/testing';
+
+import { UpdatePostComponent } from './update-post.component';
+
+describe('UpdatePostComponent', () => {
+  let component: UpdatePostComponent;
+  let fixture: ComponentFixture<UpdatePostComponent>;
+
+  beforeEach(async () => {
+    await TestBed.configureTestingModule({
+      imports: [UpdatePostComponent]
+    })
+    .compileComponents();
+
+    fixture = TestBed.createComponent(UpdatePostComponent);
+    component = fixture.componentInstance;
+    fixture.detectChanges();
+  });
+
+  it('should create', () => {
+    expect(component).toBeTruthy();
+  });
+});

frontend/src/app/routes/post/update-post/update-post.component.ts

@@ -0,0 +1,45 @@
+import {
+  Component,
+  effect,
+  Input,
+  OnInit,
+  signal,
+  WritableSignal,
+} from '@angular/core';
+import { PostsService } from '../../../shared/services/posts.service';
+import { inject } from '@angular/core';
+import { Post } from '../../../shared/interfaces/post';
+import { Location } from '@angular/common';
+import { PostEditorComponent } from '../../../components/post-editor/post-editor.component';
+
+@Component({
+  selector: 'app-update-post',
+  imports: [PostEditorComponent],
+  templateUrl: './update-post.component.html',
+})
+export class UpdatePostComponent implements OnInit {
+  @Input() id!: string;
+  private postsService = inject(PostsService);
+  private location = inject(Location);
+  post: WritableSignal<Post> = signal({
+    id: 0,
+    title: '',
+    tldr: '',
+    content: '',
+  });
+
+  ngOnInit(): void {
+    const p = this.postsService.getPost(parseInt(this.id))();
+    if (p == undefined) {
+      this.location.back();
+      return;
+    }
+
+    this.post.set(p);
+  }
+
+  save() {
+    this.postsService.updatePost(this.post());
+    this.location.back();
+  }
+}

frontend/src/app/shared/services/posts.service.ts

@@ -1,7 +1,6 @@
 import { HttpClient } from '@angular/common/http';
 import {
   computed,
-  effect,
   inject,
   Injectable,
   Signal,
@@ -37,6 +36,15 @@ export class PostsService {
     return computed(() => this.posts().get(id));
   }
 
+  deletePost(id: number) {
+    this.http.delete(`${environment.apiRoot}/posts/${id}`).subscribe(() => {
+      this.posts.update((p) => {
+        p.delete(id);
+        return new Map(p);
+      });
+    });
+  }
+
   createPost(post: Post) {
     this.http
       .post<Post>(`${environment.apiRoot}/posts`, post)
@@ -44,4 +52,11 @@ export class PostsService {
         this.posts.update((p) => new Map(p.set(res.id, res)));
       });
   }
+  updatePost(post: Post) {
+    this.http
+      .put<Post>(`${environment.apiRoot}/posts`, post)
+      .subscribe((res) => {
+        this.posts.update((p) => new Map(p.set(res.id, res)));
+      });
+  }
 }