Wire up like functionality on front-end

Client/src/app/components/members/member-card/member-card.component.html

@@ -6,7 +6,7 @@
                 <button class="btn btn-primary" [routerLink]="['/members/', user.id]"><i class="fa fa-user"></i> </button>
             </li>
             <li class="list-inline-item">
-                <button class="btn btn-danger"><i class="fa fa-heart"></i> </button>
+                <button class="btn btn-danger" (click)="likeUser(user.id)"><i class="fa fa-heart"></i> </button>
             </li>
             <li class="list-inline-item">
                 <button class="btn btn-warning"><i class="fa fa-envelope"></i> </button>

Client/src/app/components/members/member-card/member-card.component.ts

@@ -1,5 +1,8 @@
 import { Component, OnInit, Input } from '@angular/core';
 import { User } from 'src/app/models/user';
+import { AuthService } from 'src/app/services/auth.service';
+import { UserService } from 'src/app/services/user.service';
+import { AlertifyService } from 'src/app/services/alertify.service';
 
 @Component({
   selector: 'app-member-card',
@@ -8,9 +11,18 @@ import { User } from 'src/app/models/user';
 })
 export class MemberCardComponent implements OnInit {
   @Input() user: User;
-  constructor() { }
+
+  constructor(private authService: AuthService, private userService: UserService, private alertify: AlertifyService) { }
 
   ngOnInit() {
   }
 
+  likeUser(recipientId: number) {
+    this.userService.likeUser(this.authService.decodedToken.nameid, recipientId).subscribe(data => {
+      this.alertify.success(`${this.user.knownAs} was liked`);
+    }, error => {
+      this.alertify.error(error);
+    });
+  }
+
 }

Client/src/app/services/user.service.ts

@@ -57,4 +57,8 @@ export class UserService {
   deletePhoto(userId: number, photoId: number) {
     return this.http.delete(`${this.usersUrl}${userId}/photos/${photoId}`);
   }
+
+  likeUser(userId: number, recipientId: number) {
+    return this.http.post(`${this.usersUrl}${userId}/like/${recipientId}`, {});
+  }
 }

Data/FriendRepository.cs

@@ -2,6 +2,7 @@
 using Friendster.Models;
 using Microsoft.EntityFrameworkCore;
 using System;
+using System.Collections.Generic;
 using System.Linq;
 using System.Threading.Tasks;
 
@@ -58,6 +59,18 @@ public async Task<PagedList<User>> GetUsers(UserParameters parameters)
                     u.BirthDate >= minimumBirthDate &&
                     u.BirthDate <= maximumBirthDate);
 
+            if (parameters.Likers)
+            {
+                var likers = await GetUserLikes(parameters.UserId, true);
+                users = users.Where(u => likers.Contains(u.Id));
+            }
+
+            if (parameters.Likees)
+            {
+                var likees = await GetUserLikes(parameters.UserId, false);
+                users = users.Where(u => likees.Contains(u.Id));
+            }
+
             string orderBy = parameters.OrderBy?.ToLower();
             if (!string.IsNullOrWhiteSpace(orderBy))
             {
@@ -84,5 +97,25 @@ public async Task<bool> SaveChangesAsync()
         {
             return await _context.SaveChangesAsync() > 0;
         }
+
+        private async Task<IEnumerable<int>> GetUserLikes(int userId, bool getLikers)
+        {
+            var user = await _context.Users
+                .Include(x => x.Likers)
+                .Include(x => x.Likees)
+                .FirstOrDefaultAsync(u => u.Id == userId);
+
+            if (getLikers)
+            {
+                return user.Likers
+                    .Where(u => u.LikeeId == userId)
+                    .Select(u => u.LikerId);
+
+            }
+
+            return user.Likees
+                .Where(u => u.LikerId == userId)
+                .Select(u => u.LikeeId);
+        }
     }
 }

Helpers/UserParameters.cs

@@ -27,5 +27,7 @@ public int PageSize
         public int MinimumAge { get; set; } = 18;
         public int MaximumAge { get; set; } = 99;
         public string OrderBy { get; set; }
+        public bool Likers { get; set; }
+        public bool Likees { get; set; }
     }
 }