Merge pull request #7 from Team-Kaleidoscope/devHEADv0.2main

Second Stage: Complete

1 files changed, 198 insertions, 12 deletions

diff --git a/src/app/components/post/post.component.ts b/src/app/components/post/post.component.ts
index 387f56f..e8ba430 100644
--- a/src/app/components/post/post.component.ts
+++ b/src/app/components/post/post.component.ts
@@ -1,50 +1,123 @@
-import { Component, Input, OnInit } from '@angular/core';
+import { AfterViewInit, Component, ElementRef, Input, OnInit, Renderer2, ViewChild } from '@angular/core';
+import { FormBuilder, FormControl, FormGroup } from '@angular/forms';
 import { Router } from '@angular/router';
 import { Guid } from 'guid-typescript';
+import { CloudinaryService } from 'src/app/services/cloudinary.service';
 import { PostService } from 'src/app/services/post.service';
+import { RatingService } from 'src/app/services/rating.service';
 import { UserService } from 'src/app/services/user.service';
-import { User } from 'src/models/identity/user';
-import { Post } from 'src/models/post';
+import { User } from 'src/models/identity/user.model';
+import { Post } from 'src/models/post.model';
+import { TokenService } from '../../services/token.service';
 
 @Component({
   selector: 'app-post',
   templateUrl: './post.component.html',
   styleUrls: ['./post.component.css'],
 })
-export class PostComponent implements OnInit {
+export class PostComponent implements OnInit, AfterViewInit {
   public loaded = false;
   public user: User;
   public post: Post;
   public votesNumber: number;
   public timeCreated: string;
   @Input() paramId: string;
+  @ViewChild('upvote') upvoteBtn: ElementRef;
+  @ViewChild('downvote') downvoteBtn: ElementRef;
+  @ViewChild('share') shareBtn: ElementRef;
+  private _defaultShareBtnInnerHTML: string;
+  private _linkShared = false; // For optimisation purposes
+  public loggedIn = false;
+  public loggedInAuthor = false;
+  public editingPost = false;
+  public files: File[];
+  public editPostFormGroup: FormGroup;
 
-  constructor(private _postService: PostService, private _userService: UserService, private _router: Router)
+  constructor(private _postService: PostService, private _ratingServe: RatingService, private _userService: UserService, private _router: Router, private _tokenService: TokenService, private _cloudinaryService: CloudinaryService, private _fb: FormBuilder, private _elem: ElementRef, private _renderer: Renderer2)
   { }
 
   ngOnInit(): void {
+    this.loggedIn = this._tokenService.getTokenFromSessionStorage() !== '';
+
     this.post = this._postService.getDefaultPost();
     this.user = this._userService.getDefaultUser();
+    this.files = [];
 
-    this._postService.getPostRequest(Guid.parse(this.paramId)).subscribe(
-      (result: object) => {
+    this._postService.getPostRequest(Guid.parse(this.paramId)).subscribe({
+      next: (result: object) => {
         Object.assign(this.post, result);
+
         this.post.fileURLs = Object.values(result)[7];
-        this.votesNumber = 23;
+        this.votesNumber = this.post.currentRating;
 
         this.timeCreated = new Date(this.post.timeCreated).toLocaleString('en-GB');
+
         this.loadUser();
       }
-    );
+    });
+
+    this.editPostFormGroup = this._fb.group({
+      newPostMessage: new FormControl(''),
+      fileUpload: new FormControl('')
+    });
   }
 
   private loadUser(): void {
-    this._userService.getUserByUsernameRequest(this.post.creatorUsername).subscribe(
-      (result: object) => {
+    this._userService.getUserByUsernameRequest(this.post.creatorUsername).subscribe({
+      next: (result: object) => {
         Object.assign(this.user, result);
+
+        if (this.loggedIn) {
+          this.loggedInAuthor = this._tokenService.getUsernameFromSessionStorageToken() === this.post.creatorUsername;
+          this.editPostFormGroup.get('newPostMessage')?.setValue(this.post.message);
+
+          if (this.post.fileURLs.length > 0) {
+            this.loadFiles();
+            return;
+          }
+        }
+
         this.loaded = true;
       }
-    );
+    });
+  }
+
+  private loadFiles(): void {
+    for (const fileURL of this.post.fileURLs) {
+      this._cloudinaryService.getFileRequest(fileURL).subscribe({
+        next: (result: object) => {
+          const file = result as File;
+          const tmp = {
+            name: fileURL.match('(?<=\/)(?:.(?!\/))+$')?.pop() ?? 'Attachment'
+          };
+
+          Object.assign(file, tmp);
+          this.files.push(file);
+
+          if (this.files.length === this.post.fileURLs.length) {
+            this.loaded = true;
+          }
+        }
+      });
+    }
+  }
+
+  ngAfterViewInit(): void {
+    if (this.loggedIn) {
+      this._ratingServe.getRatingByUserAndPostWithSessionStorageRequest(Guid.parse(this.paramId)).subscribe({
+        next: (x: object) => {
+          if (!x) {
+            return;
+          }
+
+          const isLike: boolean = Object.values(x)[3];
+
+          this.changeColorOfVoteButton(isLike, !isLike);
+        }
+      });
+    }
+
+    this._defaultShareBtnInnerHTML = this.shareBtn.nativeElement.innerHTML;
   }
 
   goToAuthorProfile(): void {
@@ -54,4 +127,117 @@ export class PostComponent implements OnInit {
   goToPostPage(): void {
     this._router.navigate(['/post/' + this.post.postId]);
   }
+
+  toggleEditing(): void {
+    this.editingPost = !this.editingPost;
+  }
+
+  onFileUpload(event: any): void {
+    this.files.push(...event.target.files);
+    this.editPostFormGroup.get('fileUpload')?.reset();
+  }
+
+  removeAttachment(fileName: string): void {
+    this.files = this.files.filter(x => x.name !== fileName);
+  }
+
+  editPost(): void {
+    const newMessage = this.editPostFormGroup.get('newPostMessage')?.value;
+
+    if (newMessage !== '') {
+      this._postService.putPostWithSessionStorageRequest(Guid.parse(this.paramId), newMessage, this.files).subscribe({
+        next: () => {
+          this.reloadPage();
+        }
+      });
+      this.loaded = false;
+    }
+  }
+
+  deletePost(): void {
+    this._postService.deletePostWithSessionStorage(Guid.parse(this.paramId)).subscribe({
+      next: () => {
+        this._router.navigate(['/profile/' + this._tokenService.getUsernameFromSessionStorageToken()]);
+      }
+    });
+  }
+
+  private reloadPage(): void {
+    this._router.routeReuseStrategy.shouldReuseRoute = () => false;
+    this._router.onSameUrlNavigation = 'reload';
+    this._router.navigate([this._router.url]);
+  }
+
+  votePost(isLike: boolean): void {
+    if (!this.loggedIn) {
+      this._router.navigate(['/login']);
+      return;
+    }
+
+    this._ratingServe.getRatingByUserAndPostWithSessionStorageRequest(Guid.parse(this.paramId)).subscribe({
+      next: (x: object) => {
+        if (x == null) { // checks if result is null or undefined
+          this.createRating(isLike);
+
+          this.changeColorOfVoteButton(isLike, !isLike);
+        }
+        else if (Object.values(x)[3] === isLike) {
+          this.deleteRating(Object.values(x)[0], isLike);
+
+          this.changeColorOfVoteButton(false, false);
+        }
+        else {
+          this.putRating(isLike);
+
+          this.changeColorOfVoteButton(isLike, !isLike);
+        }
+      }
+    });
+  }
+
+  private createRating(isLike: boolean): void {
+    this._ratingServe.createRatingWithSessionStorageRequest(Guid.parse(this.paramId), isLike).subscribe({
+      next: () => {
+        this.votesNumber += -1 + Number(isLike) * 2;
+      }
+    });
+  }
+
+  private putRating(isLike: boolean): void {
+    this._ratingServe.putRatingWithSessionStorageRequest(Guid.parse(this.paramId), isLike).subscribe({
+      next: () => {
+        // when false -2 + 0 wjen true -2 + 4
+        this.votesNumber += -2 + Number(isLike) * 4;
+      }
+    });
+  }
+
+  private deleteRating(ratingId: string, isLike: boolean): void {
+    this._ratingServe.deleteRatingFromSessionStorageRequest(Guid.parse(ratingId)).subscribe({
+      next: () => {
+        this.votesNumber += 1 - Number(isLike) * 2;
+      }
+    });
+  }
+
+  private changeColorOfVoteButton(isUpvoted: boolean, isDownvoted: boolean): void {
+    this._renderer.setStyle(this.upvoteBtn.nativeElement, 'backgroundColor', (isUpvoted) ? 'var(--upvote-highlight)' : 'inherit');
+    this._renderer.setStyle(this.downvoteBtn.nativeElement, 'backgroundColor', (isDownvoted) ? 'var(--downvote-highlight)' : 'inherit');
+  }
+
+  resetShareBtn(): void {
+    if (this._linkShared) {
+      this._renderer.setProperty(this.shareBtn.nativeElement, 'innerHTML', this._defaultShareBtnInnerHTML);
+      this._linkShared = false;
+    }
+  }
+
+  showCopiedMessage(): void {
+    this._renderer.setProperty(this.shareBtn.nativeElement, 'innerHTML', 'Link copied to clipboard!');
+    this._linkShared = true;
+  }
+
+  getPostLink(): string {
+    return location.origin + '/post/' + this.paramId;
+  }
 }