add favorite list handlings on app side and LocalEnpoint. Add 'RecipeDatabase' class to simulate a Recipe database

Endpoint/IAccountOwnedRecipes.cs

@@ -0,0 +1,23 @@
+using Models;
+using System;
+using System.Collections.Generic;
+using System.Collections.Immutable;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace LocalEndpoint
+{
+    public interface IAccountOwnedRecipes
+    {
+
+        public Account Account { get; }
+
+        public bool UploadRecipe(Recipe recipe);
+
+        public bool RemoveRecipe(RecipeInfo info);
+
+
+        public ImmutableList<RecipeInfo> GetAccountRecipes();
+    }
+}

Endpoint/IAccountRecipesPreferences.cs

@@ -6,27 +6,24 @@ using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
 
-namespace LocalEndpoint
+namespace Endpoint
 {
-    public interface IAccountRecipes
+    public interface IAccountRecipesPreferences
     {
-
         public Account Account { get; }
 
-        public bool UploadRecipe(Recipe recipe);
-
-        public bool RemoveRecipe(RecipeInfo info);
 
-        public void SetRate(RecipeInfo info, AccountRecipeRate rate);
+        public void AddToFavorites(RecipeInfo info);
+        public void RemoveFromFavorites(RecipeInfo info);
+        public void SetReviewScore(RecipeInfo info, uint score);
 
-        public AccountRecipeRate? FindRate(RecipeInfo info);
+        public AccountRecipeRate GetRate(RecipeInfo info);
 
-        public ImmutableList<RecipeInfo> GetAccountRecipes();
+        public ImmutableList<RecipeInfo> GetFavorites();
 
         public ImmutableList<RecipeInfo> GetRecommendedRecipes();
 
-        public ImmutableList<RecipeInfo> GetFavorites();
-
         public ImmutableList<(RecipeInfo, uint)> GetWeeklyList();
+
     }
 }

Endpoint/IRecipesService.cs

@@ -2,6 +2,7 @@
 using Models;
 using System;
 using System.Collections.Generic;
+using System.Collections.Immutable;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
@@ -10,11 +11,12 @@ namespace Endpoint
 {
     public interface IRecipesService
     {
-        public List<RecipeInfo> PopularRecipes();
+        public ImmutableList<RecipeInfo> PopularRecipes();
 
         public Recipe GetRecipe(RecipeInfo info);
 
-        public IAccountRecipes GetRecipesOf(Account account);
+        public IAccountOwnedRecipes GetRecipesOf(Account account);
+        public IAccountRecipesPreferences GetPreferencesOf(Account account);
 
 
     }

LocalEndpoint/AccountData.cs

@@ -0,0 +1,11 @@
+using Endpoint;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace LocalEndpoint
+{
+    internal record AccountData(IAccountOwnedRecipes Recipes, IAccountRecipesPreferences Preferences);
+}

LocalEndpoint/AccountManager.cs

@@ -1,38 +0,0 @@
-using Models;
-using Endpoint;
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
-
-namespace LocalEndpoint
-{
-    internal class AccountManager : IAccountManager
-    {
-        private static readonly Uri DEFAULT_ACCOUNT_IMAGE = new Uri("https://www.pngkey.com/png/full/115-1150152_default-profile-picture-avatar-png-green.png");
-
-        private Account userAccount = new Account(new User(DEFAULT_ACCOUNT_IMAGE, "Stub Account"), "test@example.com");
-        private string userPassword = "123456";
-
-        public Account? Login(string email, string password)
-        {
-            if (userAccount.Email == email && userPassword == password)
-            {
-                return userAccount;
-            }
-            return null;
-        }
-
-
-        public Account? Register(string email, string username, string password)
-        {
-            if (email == null || username == null || password == null)
-                return null;
-
-            userAccount = new Account(new User(DEFAULT_ACCOUNT_IMAGE, username), email);
-            userPassword = password;
-            return userAccount;
-        }
-    }
-}

LocalEndpoint/AccountOwnedRecipes.cs

@@ -0,0 +1,52 @@
+using LocalEndpoint;
+using Models;
+using System.Collections.Immutable;
+
+namespace Endpoint
+{
+    internal class AccountOwnedRecipes : IAccountOwnedRecipes
+    {
+
+        public Account Account { get; init; }
+
+        private readonly Dictionary<Guid, Recipe> ownedRecipes = new Dictionary<Guid, Recipe>();
+        private readonly RecipesDatabase db;
+
+        public AccountOwnedRecipes(Account account, RecipesDatabase db)
+        {
+            Account = account;
+            this.db = db;
+
+            //Retrieve all owned recipes from database.
+            db.ListAll().ForEach(recipe =>
+            {
+                if (recipe.Owner == account.User) ownedRecipes[recipe.Info.Id] = recipe;
+            });
+        }
+
+        public bool UploadRecipe(Recipe recipe)
+        {
+            Guid id = recipe.Info.Id;
+            if (ownedRecipes.ContainsKey(id))
+            {
+                return false;
+            }
+            db.Insert(recipe);
+            ownedRecipes.Add(id, recipe);
+            return true;
+        }
+
+        public bool RemoveRecipe(RecipeInfo info)
+        {
+            db.Remove(info.Id);
+            return ownedRecipes.Remove(info.Id);
+        }
+
+        public ImmutableList<RecipeInfo> GetAccountRecipes()
+        {
+            return ownedRecipes.Values.ToImmutableList().ConvertAll(r => r.Info);
+        }
+
+
+    }
+}

LocalEndpoint/AccountRecipes.cs

@@ -1,84 +0,0 @@
-using LocalEndpoint;
-using Models;
-using System.Collections.Immutable;
-
-namespace Endpoint
-{
-    internal class AccountRecipes : IAccountRecipes
-    {
-
-        public Account Account { get; init; }
-
-        private readonly Dictionary<Guid, Recipe> ownedRecipes = new Dictionary<Guid, Recipe>();
-        private readonly Dictionary<Guid, AccountRecipeRate> ratedRecipes = new Dictionary<Guid, AccountRecipeRate>();
-
-        public AccountRecipes(Account account)
-        {
-            Account = account;
-        }
-
-        public bool UploadRecipe(Recipe recipe)
-        {
-            Guid id = recipe.Info.Id;
-            if (ownedRecipes.ContainsKey(id))
-            {
-                return false;
-            }
-            ownedRecipes.Add(id, recipe);
-            return true;
-        }
-
-        public bool RemoveRecipe(RecipeInfo info)
-        {
-            return ownedRecipes.Remove(info.Id);
-        }
-
-        public ImmutableList<RecipeInfo> GetAccountRecipes()
-        {
-            return ownedRecipes.Values.ToImmutableList().ConvertAll(r => r.Info);
-        }
-
-
-        public ImmutableList<RecipeInfo> GetRecommendedRecipes()
-        {
-            return new List<RecipeInfo> {
-                new RecipeInfo("Chicken Salad", 500, 20, new Uri("https://healthyfitnessmeals.com/wp-content/uploads/2021/04/Southwest-chicken-salad-7-500x500.jpg"), 4, Guid.NewGuid()),
-                new RecipeInfo("Chocolate Cake", 2500, 10, new Uri("https://bakewithshivesh.com/wp-content/uploads/2022/08/IMG_0248-scaled.jpg"), 3, Guid.NewGuid()),
-                new RecipeInfo("Salmon", 20, 10, new Uri("https://www.wholesomeyum.com/wp-content/uploads/2021/06/wholesomeyum-Pan-Seared-Salmon-Recipe-13.jpg"), 4, Guid.NewGuid()),
-                new RecipeInfo("Fish", 50, 30, new Uri("https://www.ciaanet.org/wp-content/uploads/2022/07/Atlantic-and-Pacific-whole-salmon-1024x683.jpg"), 4.5F, Guid.NewGuid()),
-                new RecipeInfo("Space Cake", 800, 5, new Uri("https://static.youmiam.com/images/recipe/1500x1000/space-cake-22706?placeholder=web_recipe&sig=f14a7a86da837c6b8cc678cde424d6d5902f99ec&v3"), 5, Guid.NewGuid())
-            }.ToImmutableList();
-        }
-
-        public ImmutableList<RecipeInfo> GetFavorites()
-        {
-            return new List<RecipeInfo> {
-                new RecipeInfo("Chicken Salad", 500, 20, new Uri("https://healthyfitnessmeals.com/wp-content/uploads/2021/04/Southwest-chicken-salad-7-500x500.jpg"), 4, Guid.NewGuid()),
-                new RecipeInfo("Space Cake", 800, 5, new Uri("https://static.youmiam.com/images/recipe/1500x1000/space-cake-22706?placeholder=web_recipe&sig=f14a7a86da837c6b8cc678cde424d6d5902f99ec&v3"), 5, Guid.NewGuid()),
-                new RecipeInfo("Fish And Ships", 450, 15, new Uri("https://upload.wikimedia.org/wikipedia/commons/f/ff/Fish_and_chips_blackpool.jpg"), 4, Guid.NewGuid()),
-                new RecipeInfo("Caesar Salad", 150, 20, new Uri("https://www.galbani.fr/wp-content/uploads/2020/04/AdobeStock_157570276-2.jpeg"), 1, Guid.NewGuid())
-            }.ToImmutableList();
-        }
-
-        public ImmutableList<(RecipeInfo, uint)> GetWeeklyList()
-        {
-            return new List<(RecipeInfo, uint)> {
-                (new RecipeInfo("Space Cake", 800, 5, new Uri("https://static.youmiam.com/images/recipe/1500x1000/space-cake-22706?placeholder=web_recipe&sig=f14a7a86da837c6b8cc678cde424d6d5902f99ec&v3"), 5, Guid.NewGuid()), 4),
-                (new RecipeInfo("Chicken Curry", 500, 45, new Uri("https://cdn.chefclub.tools/uploads/recipes/cover-thumbnail/f287b191-dc8e-4c85-bbb6-e26387c354d3.jpg"), 3, Guid.NewGuid()), 4),
-                (new RecipeInfo("Spaghetti Bolognese", 1000, 30, new Uri("https://media.istockphoto.com/id/1144823591/fr/photo/spaghetti-dans-un-plat-sur-un-fond-blanc.jpg?s=612x612&w=0&k=20&c=qFzd8iE185mpsX7hWqYaieOWlzJVCkzFdYsxmwUT3-Q="), 1, Guid.NewGuid()), 1),
-            }.ToImmutableList();
-        }
-
-        public void SetRate(RecipeInfo info, AccountRecipeRate rate)
-        {
-            ratedRecipes.Add(info.Id, rate);
-        }
-
-        public AccountRecipeRate? FindRate(RecipeInfo info)
-        {
-            AccountRecipeRate? rate = null;
-            ratedRecipes.TryGetValue(info.Id, out rate);
-            return rate;
-        }
-    }
-}

LocalEndpoint/AccountRecipesPreferences.cs

@@ -0,0 +1,91 @@
+using Endpoint;
+using Models;
+using System;
+using System.Collections.Generic;
+using System.Collections.Immutable;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace LocalEndpoint
+{
+    internal class AccountRecipesPreferences : IAccountRecipesPreferences
+    {
+        //Binds a recipe's id to it's account review ratings.
+        private readonly Dictionary<Guid, AccountRecipeRate> ratings = new Dictionary<Guid, AccountRecipeRate>();
+
+        //Binds a recipe's id to its amount of person stored in the account's weekly list
+        private readonly Dictionary<Guid, uint> weekly = new Dictionary<Guid, uint>();
+
+        private readonly RecipesDatabase db;
+        public AccountRecipesPreferences(Account account, RecipesDatabase db)
+        {
+            Account = account;
+            this.db = db;
+        }
+
+        public Account Account { get; init; }
+
+        public ImmutableList<RecipeInfo> GetRecommendedRecipes()
+        {
+            return db.ListAll().ConvertAll(recipe => recipe.Info);
+        }
+
+        public ImmutableList<RecipeInfo> GetFavorites()
+        {
+            List<RecipeInfo> favorites = new List<RecipeInfo>();
+            foreach (Recipe recipe in db.ListAll())
+            {
+                if (ratings.TryGetValue(recipe.Info.Id, out AccountRecipeRate? rate))
+                {
+                    if (rate.IsFavorite) 
+                        favorites.Add(recipe.Info);
+                }
+            }
+            return favorites.ToImmutableList();
+        }
+
+        public ImmutableList<(RecipeInfo, uint)> GetWeeklyList()
+        {
+            List<(RecipeInfo, uint)> weekly = new List<(RecipeInfo, uint)>();
+            foreach (Recipe recipe in db.ListAll())
+            {
+                if (this.weekly.TryGetValue(recipe.Info.Id, out uint personAmmount))
+                {
+                    weekly.Add((recipe.Info, personAmmount));
+                }
+            }
+            return weekly.ToImmutableList();
+        }
+
+        
+        public AccountRecipeRate GetRate(RecipeInfo info)
+        {
+            AccountRecipeRate rate = null;
+            if (!ratings.TryGetValue(info.Id, out rate))
+            {
+                rate = new AccountRecipeRate();
+                ratings.Add(info.Id, rate);
+            }
+            return rate;
+        }
+
+        public void AddToFavorites(RecipeInfo info)
+        {
+            AccountRecipeRate rate = GetRate(info);
+            ratings[info.Id] = new AccountRecipeRate(true, rate.Rate);
+        }
+
+        public void RemoveFromFavorites(RecipeInfo info)
+        {
+            AccountRecipeRate rate = GetRate(info);
+            ratings[info.Id] = new AccountRecipeRate(false, rate.Rate);
+        }
+
+        public void SetReviewScore(RecipeInfo info, uint score)
+        {
+            AccountRecipeRate rate = GetRate(info);
+            ratings[info.Id] = new AccountRecipeRate(rate.IsFavorite, score);
+        }
+    }
+}

LocalEndpoint/ConnectionManager.cs

@@ -0,0 +1,33 @@
+using Models;
+using Endpoint;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace LocalEndpoint
+{
+    internal class ConnectionManager : IAccountManager
+    {
+        private Account userAccount = Constants.MAIN_USER_ACCOUNT;
+        private string userPassword = Constants.MAIN_USER_PASSWORD;
+        public Account? Login(string email, string password)
+        {
+            if (Constants.MAIN_USER_ACCOUNT.Email == email && Constants.MAIN_USER_PASSWORD == password)
+                return Constants.MAIN_USER_ACCOUNT;
+            return null;
+        }
+
+
+        public Account? Register(string email, string username, string password)
+        {
+            if (email == null || username == null || password == null)
+                return null;
+
+            userAccount = new Account(new User(Constants.DEFAULT_ACCOUNT_IMAGE, username), email);
+            userPassword = password;
+            return userAccount;
+        }
+    }
+}

LocalEndpoint/Constants.cs

@@ -0,0 +1,20 @@
+using Models;
+
+namespace LocalEndpoint
+{
+    internal class Constants
+    {
+
+        public static readonly Uri DEFAULT_ACCOUNT_IMAGE = new Uri("https://www.pngkey.com/png/full/115-1150152_default-profile-picture-avatar-png-green.png");
+
+        // User account for tests
+        public static readonly Account MAIN_USER_ACCOUNT = new Account(new User(DEFAULT_ACCOUNT_IMAGE, "Example Account"), "test@example.com");
+        public static readonly string  MAIN_USER_PASSWORD = "123456";
+
+        // other user samples
+        public static readonly User USER1 = new User(new Uri("https://i.ibb.co/L6t6bGR/DALL-E-2023-05-10-20-27-31-cook-looking-at-the-camera-with-a-chef-s-hat-laughing-in-an-exaggerated-w.png"), "The Funny Chief");
+        public static readonly User USER2 = new User(DEFAULT_ACCOUNT_IMAGE, "Yanis");
+        public static readonly User USER3 = new User(DEFAULT_ACCOUNT_IMAGE, "Leo");
+
+    }
+}

LocalEndpoint/LocalEndpoint.cs

@@ -1,11 +1,34 @@
 using Endpoint;
+using Models;
+using System.Collections.Immutable;
 
 namespace LocalEndpoint
 {
+
+    /// <summary>
+    /// The local endpoint is an implementation of the Endpoint API definition.
+    ///
+    /// </summary>
     public class LocalEndpoint : IEndpoint
     {
-        private IAccountManager accountManager = new AccountManager();
+        private readonly IAccountManager accountManager = new ConnectionManager();
-        private IRecipesService recipesService = new RecipesService();
+        private readonly IRecipesService recipesService;
+
+
+        public LocalEndpoint()
+        {
+            RecipesDatabase db = new RecipesDatabase();
+
+            //miam
+            db.Insert(new Recipe(new RecipeInfo("Chicken Salad", 500, 20, new Uri("https://healthyfitnessmeals.com/wp-content/uploads/2021/04/Southwest-chicken-salad-7-500x500.jpg"), 4, Guid.NewGuid()), Constants.USER1, new List<Ingredient> { new Ingredient("Ingredient 1", 6) }.ToImmutableList(), new List<PreparationStep> { new PreparationStep("Step 1", "Bake the eggs") }.ToImmutableList()));
+            db.Insert(new Recipe(new RecipeInfo("Chocolate Cake", 2500, 10, new Uri("https://bakewithshivesh.com/wp-content/uploads/2022/08/IMG_0248-scaled.jpg"), 3, Guid.NewGuid()), Constants.USER2, new List<Ingredient> { new Ingredient("Ingredient 1", 6) }.ToImmutableList(), new List<PreparationStep> { new PreparationStep("Step 1", "Bake the eggs") }.ToImmutableList()));
+            db.Insert(new Recipe(new RecipeInfo("Salmon", 20, 10, new Uri("https://www.wholesomeyum.com/wp-content/uploads/2021/06/wholesomeyum-Pan-Seared-Salmon-Recipe-13.jpg"), 4, Guid.NewGuid()), Constants.MAIN_USER_ACCOUNT.User, new List<Ingredient> { new Ingredient("Ingredient 1", 6) }.ToImmutableList(), new List<PreparationStep> { new PreparationStep("Step 1", "Bake the eggs") }.ToImmutableList()));
+            db.Insert(new Recipe(new RecipeInfo("Fish", 50, 30, new Uri("https://www.ciaanet.org/wp-content/uploads/2022/07/Atlantic-and-Pacific-whole-salmon-1024x683.jpg"), 4.5F, Guid.NewGuid()), Constants.MAIN_USER_ACCOUNT.User, new List<Ingredient> { new Ingredient("Ingredient 1", 6) }.ToImmutableList(), new List<PreparationStep> { new PreparationStep("Step 1", "Bake the eggs") }.ToImmutableList()));
+            db.Insert(new Recipe(new RecipeInfo("Space Cake", 800, 5, new Uri("https://static.youmiam.com/images/recipe/1500x1000/space-cake-22706?placeholder=web_recipe&sig=f14a7a86da837c6b8cc678cde424d6d5902f99ec&v3"), 5, Guid.NewGuid()), Constants.USER3, new List<Ingredient> { new Ingredient("Ingredient 1", 6) }.ToImmutableList(), new List<PreparationStep> { new PreparationStep("Step 1", "Bake the eggs") }.ToImmutableList()));
+
+            recipesService = new RecipesService(db);
+        }
+
         public IAccountManager AccountManager => accountManager;
 
         public IRecipesService RecipesService => recipesService;

LocalEndpoint/RecipesDatabase.cs

@@ -0,0 +1,43 @@
+using Models;
+using System.Collections.Generic;
+using System.Collections.Immutable;
+
+namespace LocalEndpoint
+{
+
+    //Simple class to simulate a recipe database
+    internal class RecipesDatabase
+    {
+
+        private Dictionary<Guid, Recipe> recipes = new Dictionary<Guid, Recipe>();
+
+        public Recipe? Lookup(Guid id)
+        {
+            Recipe? recipe;
+            recipes.TryGetValue(id, out recipe);
+            return recipe;
+        }
+
+
+        public Recipe Get(Guid id)
+        {
+            return recipes[id];
+        }
+
+        public void Insert(Recipe recipe)
+        {
+            recipes[recipe.Info.Id] = recipe; 
+        }
+
+        public void Remove(Guid id)
+        {
+            recipes.Remove(id);
+        }
+
+        public ImmutableList<Recipe> ListAll()
+        {
+            return recipes.Values.ToImmutableList();
+        }
+
+    }
+}

LocalEndpoint/RecipesService.cs

@@ -7,41 +7,49 @@ namespace LocalEndpoint
     internal class RecipesService : IRecipesService
     {
 
-        private readonly Dictionary<Account, IAccountRecipes> accountsRecipes = new Dictionary<Account, IAccountRecipes>();
+        private readonly RecipesDatabase db;
+        private readonly Dictionary<Account, AccountData> accountsData = new Dictionary<Account, AccountData>();
 
-        public List<RecipeInfo> PopularRecipes()
+        public RecipesService(RecipesDatabase db)
         {
-            return new List<RecipeInfo> {
+            this.db = db;
-                new RecipeInfo("Chicken Curry", 500, 45, new Uri("https://cdn.chefclub.tools/uploads/recipes/cover-thumbnail/f287b191-dc8e-4c85-bbb6-e26387c354d3.jpg"), 3, Guid.NewGuid()),
+        }
-                new RecipeInfo("Spaghetti Bolognese", 1000, 30, new Uri("https://media.istockphoto.com/id/1144823591/fr/photo/spaghetti-dans-un-plat-sur-un-fond-blanc.jpg?s=612x612&w=0&k=20&c=qFzd8iE185mpsX7hWqYaieOWlzJVCkzFdYsxmwUT3-Q="), 1, Guid.NewGuid()),
+
-                new RecipeInfo("Beef Stroganoff", 100, 10, new Uri("https://www.cookwithnabeela.com/wp-content/uploads/2023/02/BeefStroganoff.webp"), 5, Guid.NewGuid()),
+        public ImmutableList<RecipeInfo> PopularRecipes()
-                new RecipeInfo("Fish And Ships", 450, 15, new Uri("https://upload.wikimedia.org/wikipedia/commons/f/ff/Fish_and_chips_blackpool.jpg"), 4, Guid.NewGuid()),
+        {
-                new RecipeInfo("Caesar Salad", 150, 20, new Uri("https://www.galbani.fr/wp-content/uploads/2020/04/AdobeStock_157570276-2.jpeg"), 1, Guid.NewGuid())
+            return db.ListAll().Take(4).ToImmutableList().ConvertAll(v => v.Info);
-            };
         }
 
         public Recipe GetRecipe(RecipeInfo info)
         {
-            User owner = new User(new Uri("https://i.ibb.co/L6t6bGR/DALL-E-2023-05-10-20-27-31-cook-looking-at-the-camera-with-a-chef-s-hat-laughing-in-an-exaggerated-w.png"), "The Funny Chief");
+            return db.Get(info.Id);
-            var ingredients = new List<Ingredient> { new Ingredient("Banana", 12), new Ingredient("Apple", 2) }.ToImmutableList();
-            var steps = new List<PreparationStep> { new PreparationStep("Step 1", "This step is an hardcoded step from a stub implementation of IRecipesSeervice") }.ToImmutableList();
-            return new Recipe(info, owner, ingredients, steps);
         }
 
 
-        public IAccountRecipes GetRecipesOf(Account account)
+        public IAccountOwnedRecipes GetRecipesOf(Account account)
+        {
+            return GetOrInitData(account).Recipes;
+        }
+        public IAccountRecipesPreferences GetPreferencesOf(Account account)
         {
-            IAccountRecipes? recipes;
+            return GetOrInitData(account).Preferences;
-            accountsRecipes.TryGetValue(account, out recipes);
+        }
+
+        private AccountData GetOrInitData(Account account)
+        {
+            AccountData? data;
+            accountsData.TryGetValue(account, out data);
 
-            if (recipes == null) { 
+            if (data == null)
-                recipes = new AccountRecipes(account);
+            {
+                AccountOwnedRecipes recipes = new AccountOwnedRecipes(account, db);
                 recipes.UploadRecipe(new Recipe(new RecipeInfo("Cupcake", 500, 12, new Uri("https://www.mycake.fr/wp-content/uploads/2015/12/rs_cupcake_4x3.jpg"), 4.2F, Guid.NewGuid()), account.User, new List<Ingredient> { new Ingredient("Chocolate", 4) }.ToImmutableList(), new List<PreparationStep> { new PreparationStep("Eat Chocolate", "Eat the chocolate") }.ToImmutableList()));
-                accountsRecipes.Add(account, recipes);
+                AccountRecipesPreferences preferences = new AccountRecipesPreferences(account, db);
+                data = new AccountData(recipes, preferences);
+                accountsData.Add(account, data);
             }
-            return recipes;
+            return data;
         }
 
-
     }
 }

MainAppShell.xaml.cs

@@ -9,9 +9,9 @@ public partial class MainAppShell : Shell
 	public MainAppShell(Account account, IEndpoint endpoint, IApp app)
 	{
 		InitializeComponent();
-		HomeTab.ContentTemplate = new DataTemplate(() => new HomePage(account, endpoint));
+		HomeTab.ContentTemplate = new DataTemplate(() => new HomePage(account, app.Notifier, endpoint));
-		FavoritesTab.ContentTemplate = new DataTemplate(() => new FavoritesPage(account, endpoint.RecipesService));
+		FavoritesTab.ContentTemplate = new DataTemplate(() => new FavoritesPage(account, app.Notifier, endpoint.RecipesService));
-		MyListTab.ContentTemplate = new DataTemplate(() => new MyListPage(account, endpoint.RecipesService));
+		MyListTab.ContentTemplate = new DataTemplate(() => new MyListPage(account, app.Notifier, endpoint.RecipesService));
 		MoreTab.ContentTemplate = new DataTemplate(() => new MorePage(account, new MorePageController(account, endpoint, app)));
     }
 }

Models/AccountRecipeRate.cs

@@ -1,5 +1,5 @@
 
 namespace Models
 {
-    public record AccountRecipeRate(bool IsFavorite, uint Rate);
+    public record AccountRecipeRate(bool IsFavorite = false, uint Rate = 0);
 }

Views/FavoritesPage.xaml

@@ -4,7 +4,8 @@
              x:Class="ShoopNCook.Pages.FavoritesPage"
              Title="FavoritesPage"
              xmlns:views="clr-namespace:ShoopNCook.Views"
-             BackgroundColor="{StaticResource BackgroundPrimary}">
+             BackgroundColor="{StaticResource BackgroundPrimary}"
+             NavigatedTo="ContentPage_NavigatedTo">
     
     <Grid
         RowDefinitions="Auto, *">

Views/FavoritesPage.xaml.cs

@@ -6,24 +6,41 @@ using Endpoint;
 using LocalEndpoint;
 using Models;
 using ShoopNCook.Views;
+using System.Security.Principal;
 
 public partial class FavoritesPage : ContentPage
 {
-    public FavoritesPage(Account account, IRecipesService service)
+
+    private readonly Account account;
+    private readonly IUserNotifier notifier;
+    private IRecipesService service;
+
+    public FavoritesPage(Account account, IUserNotifier notifier, IRecipesService service)
     {
         InitializeComponent();
+        this.account = account;
+        this.notifier = notifier;
+        this.service = service;
+
+        UpdateFavorites();
+    }
 
-        IAccountRecipes recipes = service.GetRecipesOf(account);
+    private void UpdateFavorites()
-        recipes.GetFavorites().ForEach(info =>
+    {
+        IAccountRecipesPreferences preferences = service.GetPreferencesOf(account);
+        RecipeViewLayout.Children.Clear();
+        preferences.GetFavorites().ForEach(info =>
         {
             RecipeViewLayout.Children.Add(new RecipeView(info, () =>
             {
                 Recipe recipe = service.GetRecipe(info);
-                AccountRecipeRate? rate = recipes.FindRate(info);
+                Shell.Current.Navigation.PushAsync(new RecipePage(recipe, notifier, preferences, 1));
-                Shell.Current.Navigation.PushAsync(new RecipePage(recipe, rate, 1));
             }));
         });
+    }
 
+    private void ContentPage_NavigatedTo(object sender, NavigatedToEventArgs e)
+    {
+        UpdateFavorites();
     }
-    
 }

Views/HomePage.xaml.cs

@@ -7,12 +7,12 @@ using LocalEndpoint;
 
 public partial class HomePage : ContentPage
 {
-	public HomePage(Account account, IEndpoint endpoint)
+	public HomePage(Account account, IUserNotifier notifier, IEndpoint endpoint)
     {
 		InitializeComponent();
 
         IRecipesService service = endpoint.RecipesService;
-        IAccountRecipes recipes = service.GetRecipesOf(account);
+        IAccountRecipesPreferences preferences = service.GetPreferencesOf(account);
 
 
         //TODO this code can be factorised
@@ -21,13 +21,12 @@ public partial class HomePage : ContentPage
             layout.Children.Add(new RecipeView(info, () =>
             {
                 Recipe recipe = service.GetRecipe(info);
-                AccountRecipeRate rate = recipes.FindRate(info);
+                Shell.Current.Navigation.PushAsync(new RecipePage(recipe, notifier, preferences, 1));
-                Shell.Current.Navigation.PushAsync(new RecipePage(recipe, rate, 1));
             }));
         }
 
         service.PopularRecipes().ForEach(recipe => PushRecipe(PopularsList, recipe));
-        recipes.GetRecommendedRecipes().ForEach(recipe => PushRecipe(RecommendedList, recipe));
+        preferences.GetRecommendedRecipes().ForEach(recipe => PushRecipe(RecommendedList, recipe));
 
         ProfilePictureImage.Source = ImageSource.FromUri(account.User.ProfilePicture);
         ProfilePictureName.Text = account.User.Name;

Views/MyListPage.xaml.cs

@@ -7,19 +7,18 @@ namespace ShoopNCook.Pages;
 
 public partial class MyListPage : ContentPage
 {
-	public MyListPage(Account account, IRecipesService service)
+	public MyListPage(Account account, IUserNotifier notifier, IRecipesService service)
     {
 		InitializeComponent();
 
-        IAccountRecipes recipes = service.GetRecipesOf(account);
+        IAccountRecipesPreferences preferences = service.GetPreferencesOf(account);
-        recipes.GetWeeklyList().ForEach(tuple =>
+        preferences.GetWeeklyList().ForEach(tuple =>
         {
             RecipeInfo info = tuple.Item1;
             RecipesLayout.Children.Add(new StoredRecipeView(info, tuple.Item2, amount =>
             {
                 Recipe recipe = service.GetRecipe(info);
-                AccountRecipeRate? rate = recipes.FindRate(info);
+                Shell.Current.Navigation.PushAsync(new RecipePage(recipe, notifier, preferences, amount));
-                Shell.Current.Navigation.PushAsync(new RecipePage(recipe, rate, amount));
             }));
         });
 

Views/MyRecipesPage.xaml.cs

@@ -10,7 +10,7 @@ public partial class MyRecipesPage : ContentPage
 
     private IUserNotifier notifier;
     private IRecipesService service;
-    private IAccountRecipes recipes;
+    private Account account;
 
 	public MyRecipesPage(
             Account account,
@@ -21,9 +21,12 @@ public partial class MyRecipesPage : ContentPage
 
         this.notifier = notifier;
         this.service = service;
-        this.recipes = service.GetRecipesOf(account);
+        this.account = account;
-    
+
-        recipes.GetAccountRecipes().ForEach(AddRecipeView);
+        service
+            .GetRecipesOf(account)
+            .GetAccountRecipes()
+            .ForEach(AddRecipeView);
     }
 
     private void AddRecipeView(RecipeInfo info)
@@ -31,8 +34,8 @@ public partial class MyRecipesPage : ContentPage
         RecipesLayout.Children.Add(new OwnedRecipeView(info, () =>
         {
             Recipe recipe = service.GetRecipe(info);
-            AccountRecipeRate? rate = recipes.FindRate(info);
+            IAccountRecipesPreferences preferences = service.GetPreferencesOf(account);
-            Shell.Current.Navigation.PushAsync(new RecipePage(recipe, rate, 1));
+            Shell.Current.Navigation.PushAsync(new RecipePage(recipe, notifier, preferences, 1));
         },
             () => RemoveRecipe(info)
         ));
@@ -40,6 +43,8 @@ public partial class MyRecipesPage : ContentPage
 
     private void RemoveRecipe(RecipeInfo info)
     {
+        IAccountOwnedRecipes recipes = service.GetRecipesOf(account);
+
         if (!recipes.RemoveRecipe(info))
         {
             notifier.Error("Could not remove recipe");
@@ -62,7 +67,9 @@ public partial class MyRecipesPage : ContentPage
     }
     private void OnAddRecipeButtonClicked(object sender, EventArgs e)
     {
-        var page = new CreateRecipePage(recipes.Account.User, notifier, recipe =>
+        IAccountOwnedRecipes recipes = service.GetRecipesOf(account);
+
+        var page = new CreateRecipePage(account.User, notifier, recipe =>
         {
             if (!recipes.UploadRecipe(recipe))
             {

Views/RecipePage.xaml

@@ -8,7 +8,6 @@
              BackgroundColor="{StaticResource BackgroundPrimary}">
     
     <Grid
-       
         RowDefinitions="90*, 10*"
         Padding="10">
         
@@ -51,7 +50,8 @@
                     StrokeShape="RoundRectangle 20"
                     BackgroundColor="{StaticResource ImageBackground}">
                     <Image 
-                        HeightRequest="250"/>
+                        HeightRequest="250"
+                        x:Name="RecipeImage"/>
                 </Border>
 
                 <!--Steps-->
@@ -146,7 +146,8 @@
                             BackgroundColor="{StaticResource Selected}"
                             VerticalOptions="Center"
                             HorizontalOptions="Center"
-                            Text="Submit"/>
+                            Text="Submit"
+                            Clicked="OnSubmitReviewClicked"/>
                     </Border>
                 </HorizontalStackLayout>
             </Grid>

Views/RecipePage.xaml.cs

@@ -1,6 +1,9 @@
 using ShoopNCook.Views;
 using System.Windows.Input;
 using Models;
+using LocalEndpoint;
+using Endpoint;
+
 namespace ShoopNCook.Pages;
 
 public partial class RecipePage : ContentPage
@@ -9,27 +12,39 @@ public partial class RecipePage : ContentPage
     private uint note;
     private bool isFavorite;
 
-    public ICommand StarCommand => new Command<string>(count => SetNote(uint.Parse(count)));
 
+    private IAccountRecipesPreferences preferences;
+    private IUserNotifier notifier;
+    private RecipeInfo info;
+
+    public ICommand StarCommand => new Command<string>(count => SetNote(uint.Parse(count)));
 
-    public RecipePage(Recipe recipe, AccountRecipeRate? rate, uint amount)
+    public RecipePage(Recipe recipe, IUserNotifier notifier, IAccountRecipesPreferences preferences, uint amount)
     {
         InitializeComponent();
 
-        Counter.Count = amount;
+        this.preferences = preferences;
+        this.notifier = notifier;
+        this.info = recipe.Info;
+
+        AccountRecipeRate rate = preferences.GetRate(recipe.Info);
 
-        note = rate?.Rate ?? 0;
+        note = rate.Rate;
-        isFavorite = rate?.IsFavorite ?? false;
+        isFavorite = rate.IsFavorite;
 
         SetFavorite(isFavorite);
         SetNote(note);
 
         RecipeInfo info = recipe.Info;
 
+        Counter.Count = amount;
         CookTime.Text = info.CookTimeMins.ToString();
         Energy.Text = info.CalPerPers.ToString() + " cal/pers";
         RecipeName.Text = info.Name;
 
+        if (info.Image != null)
+            RecipeImage.Source = ImageSource.FromUri(info.Image);
+
         foreach (Ingredient ingredient in recipe.Ingredients)
             IngredientList.Add(new IngredientView(ingredient));
 
@@ -58,9 +73,7 @@ public partial class RecipePage : ContentPage
                 i++;
             }
             else
-            {
                 img.Source = ImageSource.FromFile("star_empty.svg");
-            }
         }
     }
 
@@ -69,21 +82,30 @@ public partial class RecipePage : ContentPage
         SetFavorite(!isFavorite);
     }
 
+    private void OnSubmitReviewClicked(object o, EventArgs e)
+    {
+        preferences.SetReviewScore(info, note);
+        notifier.Success("Your review has been successfuly submited");
+    }
+
     private void SetFavorite(bool isFavorite)
     {
         this.isFavorite = isFavorite;
         if (isFavorite)
         {
             Favorite.Source = ImageSource.FromFile("hearth_on.svg");
+            preferences.AddToFavorites(info);
         }
         else
         {
             Favorite.Source = ImageSource.FromFile("hearth_off.svg");
+            preferences.RemoveFromFavorites(info);
         }
     }
-    private async void OnBackButtonClicked(object sender, EventArgs e)
+    private void OnBackButtonClicked(object sender, EventArgs e)
     {
-        await Navigation.PopAsync();
+
+        Navigation.PopAsync();
     }
 
 }