diff --git a/back/src/Kyoo.Abstractions/Controllers/IRepository.cs b/back/src/Kyoo.Abstractions/Controllers/IRepository.cs
index c4303b99..e3fea697 100644
--- a/back/src/Kyoo.Abstractions/Controllers/IRepository.cs
+++ b/back/src/Kyoo.Abstractions/Controllers/IRepository.cs
@@ -61,11 +61,11 @@ namespace Kyoo.Abstractions.Controllers
 		/// <summary>
 		/// Get the first resource that match the predicate.
 		/// </summary>
-		/// <param name="where">A predicate to filter the resource.</param>
+		/// <param name="filter">A predicate to filter the resource.</param>
 		/// <param name="include">The related fields to include.</param>
 		/// <exception cref="ItemNotFoundException">If the item could not be found.</exception>
 		/// <returns>The resource found</returns>
-		Task<T> Get(Expression<Func<T, bool>> where, Include<T>? include = default);
+		Task<T> Get(Filter<T> filter, Include<T>? include = default);
 
 		/// <summary>
 		/// Get a resource from it's ID or null if it is not found.
@@ -86,11 +86,11 @@ namespace Kyoo.Abstractions.Controllers
 		/// <summary>
 		/// Get the first resource that match the predicate or null if it is not found.
 		/// </summary>
-		/// <param name="where">A predicate to filter the resource.</param>
+		/// <param name="filter">A predicate to filter the resource.</param>
 		/// <param name="include">The related fields to include.</param>
 		/// <param name="sortBy">A custom sort method to handle cases where multiples items match the filters.</param>
 		/// <returns>The resource found</returns>
-		Task<T?> GetOrDefault(Expression<Func<T, bool>> where,
+		Task<T?> GetOrDefault(Filter<T>? filter,
 			Include<T>? include = default,
 			Sort<T>? sortBy = default);
 
@@ -105,22 +105,22 @@ namespace Kyoo.Abstractions.Controllers
 		/// <summary>
 		/// Get every resources that match all filters
 		/// </summary>
-		/// <param name="where">A filter predicate</param>
+		/// <param name="filter">A filter predicate</param>
 		/// <param name="sort">Sort information about the query (sort by, sort order)</param>
-		/// <param name="limit">How pagination should be done (where to start and how many to return)</param>
 		/// <param name="include">The related fields to include.</param>
+		/// <param name="limit">How pagination should be done (where to start and how many to return)</param>
 		/// <returns>A list of resources that match every filters</returns>
-		Task<ICollection<T>> GetAll(Expression<Func<T, bool>>? where = null,
+		Task<ICollection<T>> GetAll(Filter<T>? filter = null,
 			Sort<T>? sort = default,
-			Pagination? limit = default,
-			Include<T>? include = default);
+			Include<T>? include = default,
+			Pagination limit = default);
 
 		/// <summary>
 		/// Get the number of resources that match the filter's predicate.
 		/// </summary>
-		/// <param name="where">A filter predicate</param>
+		/// <param name="filter">A filter predicate</param>
 		/// <returns>How many resources matched that filter</returns>
-		Task<int> GetCount(Expression<Func<T, bool>>? where = null);
+		Task<int> GetCount(Filter<T>? filter = null);
 
 		/// <summary>
 		/// Map a list of ids to a list of items (keep the order).
@@ -217,9 +217,9 @@ namespace Kyoo.Abstractions.Controllers
 		/// <summary>
 		/// Delete all resources that match the predicate.
 		/// </summary>
-		/// <param name="where">A predicate to filter resources to delete. Every resource that match this will be deleted.</param>
+		/// <param name="filter">A predicate to filter resources to delete. Every resource that match this will be deleted.</param>
 		/// <returns>A <see cref="Task"/> representing the asynchronous operation.</returns>
-		Task DeleteAll(Expression<Func<T, bool>> where);
+		Task DeleteAll(Filter<T> filter);
 
 		/// <summary>
 		/// Called when a resource has been edited.
diff --git a/back/src/Kyoo.Abstractions/Models/Utils/Filter.cs b/back/src/Kyoo.Abstractions/Models/Utils/Filter.cs
new file mode 100644
index 00000000..dee6cbed
--- /dev/null
+++ b/back/src/Kyoo.Abstractions/Models/Utils/Filter.cs
@@ -0,0 +1,69 @@
+// Kyoo - A portable and vast media library solution.
+// Copyright (c) Kyoo.
+//
+// See AUTHORS.md and LICENSE file in the project root for full license information.
+//
+// Kyoo is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// any later version.
+//
+// Kyoo is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Kyoo. If not, see <https://www.gnu.org/licenses/>.
+
+using System;
+using System.Linq;
+using System.Linq.Expressions;
+namespace Kyoo.Abstractions.Models.Utils;
+
+public abstract record Filter
+{
+	public static Filter<T>? And<T>(params Filter<T>?[] filters)
+	{
+		return filters
+			.Where(x => x != null)
+			.Aggregate((Filter<T>?)null, (acc, filter) =>
+			{
+				if (acc == null)
+					return filter;
+				return new Filter<T>.And(acc, filter!);
+			});
+	}
+}
+
+public abstract record Filter<T> : Filter
+{
+	public record And(Filter<T> first, Filter<T> second) : Filter<T>;
+
+	public record Or(Filter<T> first, Filter<T> second) : Filter<T>;
+
+	public record Not(Filter<T> filter) : Filter<T>;
+
+	public record Eq(string property, object value) : Filter<T>;
+
+	public record Ne<T2>(string property, T2 value) : Filter<T>;
+
+	public record Gt<T2>(string property, T2 value) : Filter<T>;
+
+	public record Ge<T2>(string property, T2 value) : Filter<T>;
+
+	public record Lt<T2>(string property, T2 value) : Filter<T>;
+
+	public record Le<T2>(string property, T2 value) : Filter<T>;
+
+	public record Has<T2>(string property, T2 value) : Filter<T>;
+
+	public record In(string property, object[] value) : Filter<T>;
+
+	public record Lambda(Expression<Func<T, bool>> lambda) : Filter<T>;
+
+	public static Filter<T> From(string filter)
+	{
+
+	}
+}
diff --git a/back/src/Kyoo.Abstractions/Models/Utils/Identifier.cs b/back/src/Kyoo.Abstractions/Models/Utils/Identifier.cs
index c0a1cbdc..90ce62a5 100644
--- a/back/src/Kyoo.Abstractions/Models/Utils/Identifier.cs
+++ b/back/src/Kyoo.Abstractions/Models/Utils/Identifier.cs
@@ -99,13 +99,14 @@ namespace Kyoo.Abstractions.Models.Utils
 		/// identifier.Matcher&lt;Season&gt;(x => x.ShowID, x => x.Show.Slug)
 		/// </code>
 		/// </example>
-		public Expression<Func<T, bool>> Matcher<T>(Expression<Func<T, int>> idGetter,
+		public Filter<T> Matcher<T>(Expression<Func<T, int>> idGetter,
 			Expression<Func<T, string>> slugGetter)
 		{
 			ConstantExpression self = Expression.Constant(_id.HasValue ? _id.Value : _slug);
 			BinaryExpression equal = Expression.Equal(_id.HasValue ? idGetter.Body : slugGetter.Body, self);
 			ICollection<ParameterExpression> parameters = _id.HasValue ? idGetter.Parameters : slugGetter.Parameters;
-			return Expression.Lambda<Func<T, bool>>(equal, parameters);
+			Expression<Func<T, bool>> lambda = Expression.Lambda<Func<T, bool>>(equal, parameters);
+			return new Filter<T>.Lambda(lambda);
 		}
 
 		/// <summary>
@@ -117,13 +118,14 @@ namespace Kyoo.Abstractions.Models.Utils
 		/// <param name="slugGetter">An expression to retrieve a slug from the type <typeparamref name="T"/>.</param>
 		/// <typeparam name="T">The type to match against this identifier.</typeparam>
 		/// <returns>An expression to match the type <typeparamref name="T"/> to this identifier.</returns>
-		public Expression<Func<T, bool>> Matcher<T>(Expression<Func<T, int?>> idGetter,
+		public Filter<T> Matcher<T>(Expression<Func<T, int?>> idGetter,
 			Expression<Func<T, string>> slugGetter)
 		{
 			ConstantExpression self = Expression.Constant(_id.HasValue ? _id.Value : _slug);
 			BinaryExpression equal = Expression.Equal(_id.HasValue ? idGetter.Body : slugGetter.Body, self);
 			ICollection<ParameterExpression> parameters = _id.HasValue ? idGetter.Parameters : slugGetter.Parameters;
-			return Expression.Lambda<Func<T, bool>>(equal, parameters);
+			Expression<Func<T, bool>> lambda = Expression.Lambda<Func<T, bool>>(equal, parameters);
+			return new Filter<T>.Lambda(lambda);
 		}
 
 		/// <summary>
@@ -142,13 +144,21 @@ namespace Kyoo.Abstractions.Models.Utils
 		}
 
 		/// <summary>
-		/// Return an expression that return true if this <see cref="Identifier"/> match a given resource.
+		/// Return a filter to get this <see cref="Identifier"/> match a given resource.
 		/// </summary>
 		/// <typeparam name="T">The type of resource to match against.</typeparam>
 		/// <returns>
 		/// <c>true</c> if the given resource match this identifier, <c>false</c> otherwise.
 		/// </returns>
-		public Expression<Func<T, bool>> IsSame<T>()
+		public Filter<T> IsSame<T>()
+			where T : IResource
+		{
+			return _id.HasValue
+				? new Filter<T>.Eq("Id", _id.Value)
+				: new Filter<T>.Eq("Slug", _slug!);
+		}
+
+		private Expression<Func<T, bool>> _IsSameExpression<T>()
 			where T : IResource
 		{
 			return _id.HasValue
@@ -163,7 +173,7 @@ namespace Kyoo.Abstractions.Models.Utils
 		/// <typeparam name="T">The type that contain the list to check.</typeparam>
 		/// <typeparam name="T2">The type of resource to check this identifier against.</typeparam>
 		/// <returns>An expression to check if this <see cref="Identifier"/> is contained.</returns>
-		public Expression<Func<T, bool>> IsContainedIn<T, T2>(Expression<Func<T, IEnumerable<T2>>> listGetter)
+		public Filter<T> IsContainedIn<T, T2>(Expression<Func<T, IEnumerable<T2>?>> listGetter)
 			where T2 : IResource
 		{
 			MethodInfo method = typeof(Enumerable)
@@ -171,8 +181,9 @@ namespace Kyoo.Abstractions.Models.Utils
 				.Where(x => x.Name == nameof(Enumerable.Any))
 				.FirstOrDefault(x => x.GetParameters().Length == 2)!
 				.MakeGenericMethod(typeof(T2));
-			MethodCallExpression call = Expression.Call(null, method, listGetter.Body, IsSame<T2>());
-			return Expression.Lambda<Func<T, bool>>(call, listGetter.Parameters);
+			MethodCallExpression call = Expression.Call(null, method, listGetter.Body, _IsSameExpression<T2>());
+			Expression<Func<T, bool>> lambda = Expression.Lambda<Func<T, bool>>(call, listGetter.Parameters);
+			return new Filter<T>.Lambda(lambda);
 		}
 
 		/// <inheritdoc />
diff --git a/back/src/Kyoo.Abstractions/Models/Utils/Pagination.cs b/back/src/Kyoo.Abstractions/Models/Utils/Pagination.cs
index a76444ad..e7c1478e 100644
--- a/back/src/Kyoo.Abstractions/Models/Utils/Pagination.cs
+++ b/back/src/Kyoo.Abstractions/Models/Utils/Pagination.cs
@@ -21,7 +21,7 @@ namespace Kyoo.Abstractions.Controllers
 	/// <summary>
 	/// Information about the pagination. How many items should be displayed and where to start.
 	/// </summary>
-	public class Pagination
+	public struct Pagination
 	{
 		/// <summary>
 		/// The count of items to return.
diff --git a/back/src/Kyoo.Abstractions/Utility/MethodOfUtils.cs b/back/src/Kyoo.Abstractions/Utility/MethodOfUtils.cs
deleted file mode 100644
index 5a0629de..00000000
--- a/back/src/Kyoo.Abstractions/Utility/MethodOfUtils.cs
+++ /dev/null
@@ -1,125 +0,0 @@
-// Kyoo - A portable and vast media library solution.
-// Copyright (c) Kyoo.
-//
-// See AUTHORS.md and LICENSE file in the project root for full license information.
-//
-// Kyoo is free software: you can redistribute it and/or modify
-// it under the terms of the GNU General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// any later version.
-//
-// Kyoo is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-// GNU General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with Kyoo. If not, see <https://www.gnu.org/licenses/>.
-
-using System;
-using System.Reflection;
-
-namespace Kyoo.Utils
-{
-	/// <summary>
-	/// Static class containing MethodOf calls.
-	/// </summary>
-	public static class MethodOfUtils
-	{
-		/// <summary>
-		/// Get a MethodInfo from a direct method.
-		/// </summary>
-		/// <param name="action">The method (without any arguments or return value.</param>
-		/// <returns>The <see cref="MethodInfo"/> of the given method</returns>
-		public static MethodInfo MethodOf(Action action)
-		{
-			return action.Method;
-		}
-
-		/// <summary>
-		/// Get a MethodInfo from a direct method.
-		/// </summary>
-		/// <param name="action">The method (without any arguments or return value.</param>
-		/// <typeparam name="T">The first parameter of the action.</typeparam>
-		/// <returns>The <see cref="MethodInfo"/> of the given method</returns>
-		public static MethodInfo MethodOf<T>(Action<T> action)
-		{
-			return action.Method;
-		}
-
-		/// <summary>
-		/// Get a MethodInfo from a direct method.
-		/// </summary>
-		/// <param name="action">The method (without any arguments or return value.</param>
-		/// <typeparam name="T">The first parameter of the action.</typeparam>
-		/// <typeparam name="T2">The second parameter of the action.</typeparam>
-		/// <returns>The <see cref="MethodInfo"/> of the given method</returns>
-		public static MethodInfo MethodOf<T, T2>(Action<T, T2> action)
-		{
-			return action.Method;
-		}
-
-		/// <summary>
-		/// Get a MethodInfo from a direct method.
-		/// </summary>
-		/// <param name="action">The method (without any arguments or return value.</param>
-		/// <typeparam name="T">The first parameter of the action.</typeparam>
-		/// <typeparam name="T2">The second parameter of the action.</typeparam>
-		/// <typeparam name="T3">The third parameter of the action.</typeparam>
-		/// <returns>The <see cref="MethodInfo"/> of the given method</returns>
-		public static MethodInfo MethodOf<T, T2, T3>(Action<T, T2, T3> action)
-		{
-			return action.Method;
-		}
-
-		/// <summary>
-		/// Get a MethodInfo from a direct method.
-		/// </summary>
-		/// <param name="action">The method (without any arguments or return value.</param>
-		/// <typeparam name="T">The return type of function.</typeparam>
-		/// <returns>The <see cref="MethodInfo"/> of the given method</returns>
-		public static MethodInfo MethodOf<T>(Func<T> action)
-		{
-			return action.Method;
-		}
-
-		/// <summary>
-		/// Get a MethodInfo from a direct method.
-		/// </summary>
-		/// <param name="action">The method (without any arguments or return value.</param>
-		/// <typeparam name="T">The first parameter of the function.</typeparam>
-		/// <typeparam name="T2">The return type of function.</typeparam>
-		/// <returns>The <see cref="MethodInfo"/> of the given method</returns>
-		public static MethodInfo MethodOf<T, T2>(Func<T, T2> action)
-		{
-			return action.Method;
-		}
-
-		/// <summary>
-		/// Get a MethodInfo from a direct method.
-		/// </summary>
-		/// <param name="action">The method (without any arguments or return value.</param>
-		/// <typeparam name="T">The first parameter of the function.</typeparam>
-		/// <typeparam name="T2">The second parameter of the function.</typeparam>
-		/// <typeparam name="T3">The return type of function.</typeparam>
-		/// <returns>The <see cref="MethodInfo"/> of the given method</returns>
-		public static MethodInfo MethodOf<T, T2, T3>(Func<T, T2, T3> action)
-		{
-			return action.Method;
-		}
-
-		/// <summary>
-		/// Get a MethodInfo from a direct method.
-		/// </summary>
-		/// <param name="action">The method (without any arguments or return value.</param>
-		/// <typeparam name="T">The first parameter of the function.</typeparam>
-		/// <typeparam name="T2">The second parameter of the function.</typeparam>
-		/// <typeparam name="T3">The third parameter of the function.</typeparam>
-		/// <typeparam name="T4">The return type of function.</typeparam>
-		/// <returns>The <see cref="MethodInfo"/> of the given method</returns>
-		public static MethodInfo MethodOf<T, T2, T3, T4>(Func<T, T2, T3, T4> action)
-		{
-			return action.Method;
-		}
-	}
-}
diff --git a/back/src/Kyoo.Abstractions/Utility/TaskUtils.cs b/back/src/Kyoo.Abstractions/Utility/TaskUtils.cs
deleted file mode 100644
index 973ec3ea..00000000
--- a/back/src/Kyoo.Abstractions/Utility/TaskUtils.cs
+++ /dev/null
@@ -1,52 +0,0 @@
-// Kyoo - A portable and vast media library solution.
-// Copyright (c) Kyoo.
-//
-// See AUTHORS.md and LICENSE file in the project root for full license information.
-//
-// Kyoo is free software: you can redistribute it and/or modify
-// it under the terms of the GNU General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// any later version.
-//
-// Kyoo is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-// GNU General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with Kyoo. If not, see <https://www.gnu.org/licenses/>.
-
-using System;
-using System.Threading.Tasks;
-
-namespace Kyoo.Utils
-{
-	/// <summary>
-	/// A class containing helper method for tasks.
-	/// </summary>
-	public static class TaskUtils
-	{
-		/// <summary>
-		/// Run a method after the execution of the task.
-		/// </summary>
-		/// <param name="task">The task to wait.</param>
-		/// <param name="then">
-		/// The method to run after the task finish. This will only be run if the task finished successfully.
-		/// </param>
-		/// <typeparam name="T">The type of the item in the task.</typeparam>
-		/// <returns>A continuation task wrapping the initial task and adding a continuation method.</returns>
-		/// <exception cref="TaskCanceledException">The source task has been canceled.</exception>
-		public static Task<T> Then<T>(this Task<T> task, Action<T> then)
-		{
-			return task.ContinueWith(x =>
-			{
-				if (x.IsFaulted)
-					x.Exception!.InnerException!.ReThrow();
-				if (x.IsCanceled)
-					throw new TaskCanceledException();
-				then(x.Result);
-				return x.Result;
-			}, TaskContinuationOptions.ExecuteSynchronously);
-		}
-	}
-}
diff --git a/back/src/Kyoo.Abstractions/Utility/Utility.cs b/back/src/Kyoo.Abstractions/Utility/Utility.cs
index 9f3a95bf..8ba02d98 100644
--- a/back/src/Kyoo.Abstractions/Utility/Utility.cs
+++ b/back/src/Kyoo.Abstractions/Utility/Utility.cs
@@ -342,18 +342,5 @@ namespace Kyoo.Utils
 				return string.Empty;
 			return "?" + string.Join('&', query.Select(x => $"{x.Key}={x.Value}"));
 		}
-
-		/// <summary>
-		/// Rethrow the exception without modifying the stack trace.
-		/// This is similar to the <c>rethrow;</c> code but is useful when the exception is not in a catch block.
-		/// </summary>
-		/// <param name="ex">The exception to rethrow.</param>
-		[System.Diagnostics.CodeAnalysis.DoesNotReturn]
-		public static void ReThrow(this Exception ex)
-		{
-			if (ex == null)
-				throw new ArgumentNullException(nameof(ex));
-			ExceptionDispatchInfo.Capture(ex).Throw();
-		}
 	}
 }
diff --git a/back/src/Kyoo.Authentication/Views/AuthApi.cs b/back/src/Kyoo.Authentication/Views/AuthApi.cs
index 5effe83d..4422feca 100644
--- a/back/src/Kyoo.Authentication/Views/AuthApi.cs
+++ b/back/src/Kyoo.Authentication/Views/AuthApi.cs
@@ -96,7 +96,7 @@ namespace Kyoo.Authentication.Views
 		[ProducesResponseType(StatusCodes.Status403Forbidden, Type = typeof(RequestError))]
 		public async Task<ActionResult<JwtToken>> Login([FromBody] LoginRequest request)
 		{
-			User? user = await _users.GetOrDefault(x => x.Username == request.Username);
+			User? user = await _users.GetOrDefault(new Filter<User>.Eq(nameof(Abstractions.Models.User.Username), request.Username));
 			if (user == null || !BCryptNet.Verify(request.Password, user.Password))
 				return Forbid(new RequestError("The user and password does not match."));
 
@@ -126,7 +126,7 @@ namespace Kyoo.Authentication.Views
 			User user = request.ToUser();
 			user.Permissions = _permissions.NewUser;
 			// If no users exists, the new one will be an admin. Give it every permissions.
-			if (await _users.GetOrDefault(where: x => true) == null)
+			if (await _users.GetOrDefault(1) == null)
 				user.Permissions = PermissionOption.Admin;
 			try
 			{
diff --git a/back/src/Kyoo.Core/Controllers/Repositories/CollectionRepository.cs b/back/src/Kyoo.Core/Controllers/Repositories/CollectionRepository.cs
index f4fb0a03..d8ccb290 100644
--- a/back/src/Kyoo.Core/Controllers/Repositories/CollectionRepository.cs
+++ b/back/src/Kyoo.Core/Controllers/Repositories/CollectionRepository.cs
@@ -53,7 +53,7 @@ namespace Kyoo.Core.Controllers
 		public override async Task<ICollection<Collection>> Search(string query, Include<Collection>? include = default)
 		{
 			return await AddIncludes(_database.Collections, include)
-				.Where(_database.Like<Collection>(x => x.Name + " " + x.Slug, $"%{query}%"))
+				.Where(x => EF.Functions.ILike(x.Name + " " + x.Slug, $"%{query}%"))
 				.Take(20)
 				.ToListAsync();
 		}
diff --git a/back/src/Kyoo.Core/Controllers/Repositories/EpisodeRepository.cs b/back/src/Kyoo.Core/Controllers/Repositories/EpisodeRepository.cs
index f9eb0d27..17519419 100644
--- a/back/src/Kyoo.Core/Controllers/Repositories/EpisodeRepository.cs
+++ b/back/src/Kyoo.Core/Controllers/Repositories/EpisodeRepository.cs
@@ -79,7 +79,7 @@ namespace Kyoo.Core.Controllers
 		public override async Task<ICollection<Episode>> Search(string query, Include<Episode>? include = default)
 		{
 			return await AddIncludes(_database.Episodes, include)
-				.Where(_database.Like<Episode>(x => x.Name!, $"%{query}%"))
+				.Where(x => EF.Functions.ILike(x.Name!, $"%{query}%"))
 				.Take(20)
 				.ToListAsync();
 		}
@@ -92,8 +92,8 @@ namespace Kyoo.Core.Controllers
 			_database.Entry(obj).State = EntityState.Added;
 			await _database.SaveChangesAsync(() =>
 				obj is { SeasonNumber: not null, EpisodeNumber: not null }
-				? Get(x => x.ShowId == obj.ShowId && x.SeasonNumber == obj.SeasonNumber && x.EpisodeNumber == obj.EpisodeNumber)
-				: Get(x => x.ShowId == obj.ShowId && x.AbsoluteNumber == obj.AbsoluteNumber));
+				? _database.Episodes.FirstOrDefaultAsync(x => x.ShowId == obj.ShowId && x.SeasonNumber == obj.SeasonNumber && x.EpisodeNumber == obj.EpisodeNumber)
+				: _database.Episodes.FirstOrDefaultAsync(x => x.ShowId == obj.ShowId && x.AbsoluteNumber == obj.AbsoluteNumber));
 			await IRepository<Episode>.OnResourceCreated(obj);
 			return obj;
 		}
diff --git a/back/src/Kyoo.Core/Controllers/Repositories/LibraryItemRepository.cs b/back/src/Kyoo.Core/Controllers/Repositories/LibraryItemRepository.cs
index e7d07ce2..3b3a8a8f 100644
--- a/back/src/Kyoo.Core/Controllers/Repositories/LibraryItemRepository.cs
+++ b/back/src/Kyoo.Core/Controllers/Repositories/LibraryItemRepository.cs
@@ -29,10 +29,8 @@ using System.Text;
 using System.Threading.Tasks;
 using Dapper;
 using InterpolatedSql.Dapper;
-using InterpolatedSql.SqlBuilders;
 using Kyoo.Abstractions.Controllers;
 using Kyoo.Abstractions.Models;
-using Kyoo.Abstractions.Models.Attributes;
 using Kyoo.Abstractions.Models.Exceptions;
 using Kyoo.Abstractions.Models.Utils;
 using Kyoo.Utils;
@@ -72,11 +70,10 @@ namespace Kyoo.Core.Controllers
 		}
 
 		/// <inheritdoc/>
-		public virtual async Task<ILibraryItem> Get(
-			Expression<Func<ILibraryItem, bool>> where,
+		public virtual async Task<ILibraryItem> Get(Filter<ILibraryItem> filter,
 			Include<ILibraryItem>? include = default)
 		{
-			ILibraryItem? ret = await GetOrDefault(where, include: include);
+			ILibraryItem? ret = await GetOrDefault(filter, include: include);
 			if (ret == null)
 				throw new ItemNotFoundException($"No {nameof(ILibraryItem)} found with the given predicate.");
 			return ret;
@@ -92,7 +89,8 @@ namespace Kyoo.Core.Controllers
 			throw new NotImplementedException();
 		}
 
-		public Task<ILibraryItem?> GetOrDefault(Expression<Func<ILibraryItem, bool>> where, Include<ILibraryItem>? include = null, Sort<ILibraryItem>? sortBy = null)
+		public Task<ILibraryItem?> GetOrDefault(Filter<ILibraryItem>? filter, Include<ILibraryItem>? include = default,
+			Sort<ILibraryItem>? sortBy = default)
 		{
 			throw new NotImplementedException();
 		}
@@ -108,9 +106,11 @@ namespace Kyoo.Core.Controllers
 			return $"coalesce({string.Join(", ", keys)})";
 		}
 
-		public static string ProcessSort<T>(Sort<T> sort, Dictionary<string, Type> config, bool recurse = false)
+		public static string ProcessSort<T>(Sort<T>? sort, Dictionary<string, Type> config, bool recurse = false)
 			where T : IQuery
 		{
+			sort ??= new Sort<T>.Default();
+
 			string ret = sort switch
 			{
 				Sort<T>.Default(var value) => ProcessSort(value, config, true),
@@ -188,12 +188,24 @@ namespace Kyoo.Core.Controllers
 			return $"{prefix}*" + projStr;
 		}
 
-		public async Task<ICollection<ILibraryItem>> GetAll(
-			Expression<Func<ILibraryItem, bool>>? where = null,
-			Sort<ILibraryItem>? sort = null,
-			Pagination? limit = null,
-			Include<ILibraryItem>? include = null)
+		public static string ProcessFilter<T>(Filter<T> filter, Dictionary<string, Type> config)
 		{
+			return filter switch
+			{
+				Filter<T>.And(var first, var second) => $"({ProcessFilter(first, config)} and {ProcessFilter(second, config)})",
+				Filter<T>.Or(var first, var second) => $"({ProcessFilter(first, config)} or {ProcessFilter(second, config)})",
+				Filter<T>.Not(var inner) => $"(not {ProcessFilter(inner, config)})",
+				Filter<T>.Eq(var property, var value) => $"({_Property(property, config)} = {value})",
+			};
+		}
+
+		public async Task<ICollection<ILibraryItem>> GetAll(Filter<ILibraryItem>? filter = null,
+			Sort<ILibraryItem>? sort = default,
+			Include<ILibraryItem>? include = default,
+			Pagination limit = default)
+		{
+			include ??= new();
+
 			Dictionary<string, Type> config = new()
 			{
 				{ "s", typeof(Show) },
@@ -203,7 +215,7 @@ namespace Kyoo.Core.Controllers
 			var (includeConfig, includeJoin, mapIncludes) = ProcessInclude(include, config);
 
 			// language=PostgreSQL
-			IDapperSqlCommand query = _database.SqlBuilder($"""
+			var query = _database.SqlBuilder($"""
 				select
 					{ExpendProjections<Show>("s", include):raw},
 					m.*,
@@ -224,7 +236,10 @@ namespace Kyoo.Core.Controllers
 				{includeJoin:raw}
 				order by {ProcessSort(sort, config):raw}
 				limit {limit.Limit}
-			""").Build();
+			""");
+
+			if (filter != null)
+				query += $"where {ProcessFilter(filter, config):raw}";
 
 			Type[] types = config.Select(x => x.Value)
 				.Concat(includeConfig.Select(x => x.Value))
@@ -242,7 +257,7 @@ namespace Kyoo.Core.Controllers
 			return data.ToList();
 		}
 
-		public Task<int> GetCount(Expression<Func<ILibraryItem, bool>>? where = null)
+		public Task<int> GetCount(Filter<ILibraryItem>? filter = null)
 		{
 			throw new NotImplementedException();
 		}
@@ -252,7 +267,7 @@ namespace Kyoo.Core.Controllers
 			throw new NotImplementedException();
 		}
 
-		public Task DeleteAll(Expression<Func<ILibraryItem, bool>> where)
+		public Task DeleteAll(Filter<ILibraryItem> filter)
 		{
 			throw new NotImplementedException();
 		}
diff --git a/back/src/Kyoo.Core/Controllers/Repositories/LocalRepository.cs b/back/src/Kyoo.Core/Controllers/Repositories/LocalRepository.cs
index 6fead483..6ee5adac 100644
--- a/back/src/Kyoo.Core/Controllers/Repositories/LocalRepository.cs
+++ b/back/src/Kyoo.Core/Controllers/Repositories/LocalRepository.cs
@@ -113,6 +113,11 @@ namespace Kyoo.Core.Controllers
 			return _Sort(query, sortBy, false).ThenBy(x => x.Id);
 		}
 
+		protected static Expression<Func<T, bool>> ParseFilter(Filter<T>? filter)
+		{
+			throw new NotImplementedException();
+		}
+
 		private static Func<Expression, Expression, BinaryExpression> _GetComparisonExpression(
 			bool desc,
 			bool next,
@@ -297,9 +302,9 @@ namespace Kyoo.Core.Controllers
 		}
 
 		/// <inheritdoc/>
-		public virtual async Task<T> Get(Expression<Func<T, bool>> where, Include<T>? include = default)
+		public virtual async Task<T> Get(Filter<T> filter, Include<T>? include = default)
 		{
-			T? ret = await GetOrDefault(where, include: include);
+			T? ret = await GetOrDefault(filter, include: include);
 			if (ret == null)
 				throw new ItemNotFoundException($"No {typeof(T).Name} found with the given predicate.");
 			return ret;
@@ -326,7 +331,7 @@ namespace Kyoo.Core.Controllers
 		}
 
 		/// <inheritdoc />
-		public virtual Task<T?> GetOrDefault(Expression<Func<T, bool>> where,
+		public virtual Task<T?> GetOrDefault(Filter<T>? filter,
 			Include<T>? include = default,
 			Sort<T>? sortBy = default)
 		{
@@ -334,7 +339,7 @@ namespace Kyoo.Core.Controllers
 					AddIncludes(Database.Set<T>(), include),
 					sortBy
 				)
-				.FirstOrDefaultAsync(where);
+				.FirstOrDefaultAsync(ParseFilter(filter));
 		}
 
 		/// <inheritdoc/>
@@ -353,12 +358,12 @@ namespace Kyoo.Core.Controllers
 		public abstract Task<ICollection<T>> Search(string query, Include<T>? include = default);
 
 		/// <inheritdoc/>
-		public virtual Task<ICollection<T>> GetAll(Expression<Func<T, bool>>? where = null,
+		public virtual Task<ICollection<T>> GetAll(Filter<T>? filter = null,
 			Sort<T>? sort = default,
-			Pagination? limit = default,
-			Include<T>? include = default)
+			Include<T>? include = default,
+			Pagination limit = default)
 		{
-			return ApplyFilters(Database.Set<T>(), where, sort, limit, include);
+			return ApplyFilters(Database.Set<T>(), ParseFilter(filter), sort, limit, include);
 		}
 
 		/// <summary>
@@ -373,7 +378,7 @@ namespace Kyoo.Core.Controllers
 		protected async Task<ICollection<T>> ApplyFilters(IQueryable<T> query,
 			Expression<Func<T, bool>>? where = null,
 			Sort<T>? sort = default,
-			Pagination? limit = default,
+			Pagination limit = default,
 			Include<T>? include = default)
 		{
 			query = AddIncludes(query, include);
@@ -381,25 +386,25 @@ namespace Kyoo.Core.Controllers
 			if (where != null)
 				query = query.Where(where);
 
-			if (limit?.AfterID != null)
+			if (limit.AfterID != null)
 			{
 				T reference = await Get(limit.AfterID.Value);
 				query = query.Where(KeysetPaginate(sort, reference, !limit.Reverse));
 			}
-			if (limit?.Reverse == true)
+			if (limit.Reverse)
 				query = query.Reverse();
-			if (limit?.Limit > 0)
+			if (limit.Limit > 0)
 				query = query.Take(limit.Limit);
 
 			return await query.ToListAsync();
 		}
 
 		/// <inheritdoc/>
-		public virtual Task<int> GetCount(Expression<Func<T, bool>>? where = null)
+		public virtual Task<int> GetCount(Filter<T>? filter = null)
 		{
 			IQueryable<T> query = Database.Set<T>();
-			if (where != null)
-				query = query.Where(where);
+			if (filter != null)
+				query = query.Where(ParseFilter(filter));
 			return query.CountAsync();
 		}
 
@@ -559,9 +564,9 @@ namespace Kyoo.Core.Controllers
 		}
 
 		/// <inheritdoc/>
-		public async Task DeleteAll(Expression<Func<T, bool>> where)
+		public async Task DeleteAll(Filter<T> filter)
 		{
-			foreach (T resource in await GetAll(where))
+			foreach (T resource in await GetAll(filter))
 				await Delete(resource);
 		}
 	}
diff --git a/back/src/Kyoo.Core/Controllers/Repositories/MovieRepository.cs b/back/src/Kyoo.Core/Controllers/Repositories/MovieRepository.cs
index ae055f4e..e7c82827 100644
--- a/back/src/Kyoo.Core/Controllers/Repositories/MovieRepository.cs
+++ b/back/src/Kyoo.Core/Controllers/Repositories/MovieRepository.cs
@@ -69,7 +69,7 @@ namespace Kyoo.Core.Controllers
 		public override async Task<ICollection<Movie>> Search(string query, Include<Movie>? include = default)
 		{
 			return await AddIncludes(_database.Movies, include)
-				.Where(_database.Like<Movie>(x => x.Name + " " + x.Slug, $"%{query}%"))
+				.Where(x => EF.Functions.ILike(x.Name + " " + x.Slug, $"%{query}%"))
 				.Take(20)
 				.ToListAsync();
 		}
diff --git a/back/src/Kyoo.Core/Controllers/Repositories/PeopleRepository.cs b/back/src/Kyoo.Core/Controllers/Repositories/PeopleRepository.cs
index 0c63c83b..27fc99b6 100644
--- a/back/src/Kyoo.Core/Controllers/Repositories/PeopleRepository.cs
+++ b/back/src/Kyoo.Core/Controllers/Repositories/PeopleRepository.cs
@@ -63,7 +63,7 @@ namespace Kyoo.Core.Controllers
 		public override async Task<ICollection<People>> Search(string query, Include<People>? include = default)
 		{
 			return await AddIncludes(_database.People, include)
-				.Where(_database.Like<People>(x => x.Name, $"%{query}%"))
+				.Where(x => EF.Functions.ILike(x.Name, $"%{query}%"))
 				.Take(20)
 				.ToListAsync();
 		}
diff --git a/back/src/Kyoo.Core/Controllers/Repositories/SeasonRepository.cs b/back/src/Kyoo.Core/Controllers/Repositories/SeasonRepository.cs
index 95067a93..b57162f8 100644
--- a/back/src/Kyoo.Core/Controllers/Repositories/SeasonRepository.cs
+++ b/back/src/Kyoo.Core/Controllers/Repositories/SeasonRepository.cs
@@ -74,7 +74,7 @@ namespace Kyoo.Core.Controllers
 		public override async Task<ICollection<Season>> Search(string query, Include<Season>? include = default)
 		{
 			return await AddIncludes(_database.Seasons, include)
-				.Where(_database.Like<Season>(x => x.Name!, $"%{query}%"))
+				.Where(x => EF.Functions.ILike(x.Name!, $"%{query}%"))
 				.Take(20)
 				.ToListAsync();
 		}
@@ -85,7 +85,9 @@ namespace Kyoo.Core.Controllers
 			await base.Create(obj);
 			obj.ShowSlug = _database.Shows.First(x => x.Id == obj.ShowId).Slug;
 			_database.Entry(obj).State = EntityState.Added;
-			await _database.SaveChangesAsync(() => Get(x => x.ShowId == obj.ShowId && x.SeasonNumber == obj.SeasonNumber));
+			await _database.SaveChangesAsync(() =>
+				_database.Seasons.FirstOrDefaultAsync(x => x.ShowId == obj.ShowId && x.SeasonNumber == obj.SeasonNumber)
+			);
 			await IRepository<Season>.OnResourceCreated(obj);
 			return obj;
 		}
diff --git a/back/src/Kyoo.Core/Controllers/Repositories/ShowRepository.cs b/back/src/Kyoo.Core/Controllers/Repositories/ShowRepository.cs
index 139fea05..bf37e761 100644
--- a/back/src/Kyoo.Core/Controllers/Repositories/ShowRepository.cs
+++ b/back/src/Kyoo.Core/Controllers/Repositories/ShowRepository.cs
@@ -70,7 +70,7 @@ namespace Kyoo.Core.Controllers
 		public override async Task<ICollection<Show>> Search(string query, Include<Show>? include = default)
 		{
 			return await AddIncludes(_database.Shows, include)
-				.Where(_database.Like<Show>(x => x.Name + " " + x.Slug, $"%{query}%"))
+				.Where(x => EF.Functions.ILike(x.Name + " " + x.Slug, $"%{query}%"))
 				.Take(20)
 				.ToListAsync();
 		}
@@ -88,8 +88,6 @@ namespace Kyoo.Core.Controllers
 		/// <inheritdoc />
 		protected override async Task Validate(Show resource)
 		{
-			resource.Slug ??= Utility.ToSlug(resource.Name);
-
 			await base.Validate(resource);
 			if (resource.Studio != null)
 			{
diff --git a/back/src/Kyoo.Core/Controllers/Repositories/StudioRepository.cs b/back/src/Kyoo.Core/Controllers/Repositories/StudioRepository.cs
index 6dda27d2..1448b7cc 100644
--- a/back/src/Kyoo.Core/Controllers/Repositories/StudioRepository.cs
+++ b/back/src/Kyoo.Core/Controllers/Repositories/StudioRepository.cs
@@ -53,7 +53,7 @@ namespace Kyoo.Core.Controllers
 		public override async Task<ICollection<Studio>> Search(string query, Include<Studio>? include = default)
 		{
 			return await AddIncludes(_database.Studios, include)
-				.Where(_database.Like<Studio>(x => x.Name, $"%{query}%"))
+				.Where(x => EF.Functions.ILike(x.Name, $"%{query}%"))
 				.Take(20)
 				.ToListAsync();
 		}
@@ -68,13 +68,6 @@ namespace Kyoo.Core.Controllers
 			return obj;
 		}
 
-		/// <inheritdoc />
-		protected override async Task Validate(Studio resource)
-		{
-			resource.Slug ??= Utility.ToSlug(resource.Name);
-			await base.Validate(resource);
-		}
-
 		/// <inheritdoc />
 		public override async Task Delete(Studio obj)
 		{
diff --git a/back/src/Kyoo.Core/Controllers/Repositories/UserRepository.cs b/back/src/Kyoo.Core/Controllers/Repositories/UserRepository.cs
index 5e87a31c..bfb51ea7 100644
--- a/back/src/Kyoo.Core/Controllers/Repositories/UserRepository.cs
+++ b/back/src/Kyoo.Core/Controllers/Repositories/UserRepository.cs
@@ -52,7 +52,7 @@ namespace Kyoo.Core.Controllers
 		public override async Task<ICollection<User>> Search(string query, Include<User>? include = default)
 		{
 			return await AddIncludes(_database.Users, include)
-				.Where(_database.Like<User>(x => x.Username, $"%{query}%"))
+				.Where(x => EF.Functions.ILike(x.Username, $"%{query}%"))
 				.Take(20)
 				.ToListAsync();
 		}
diff --git a/back/src/Kyoo.Core/Views/Helper/CrudApi.cs b/back/src/Kyoo.Core/Views/Helper/CrudApi.cs
index a58862bd..a0d67230 100644
--- a/back/src/Kyoo.Core/Views/Helper/CrudApi.cs
+++ b/back/src/Kyoo.Core/Views/Helper/CrudApi.cs
@@ -18,7 +18,6 @@
 
 using System;
 using System.Collections.Generic;
-using System.Linq.Expressions;
 using System.Threading.Tasks;
 using Kyoo.Abstractions.Controllers;
 using Kyoo.Abstractions.Models;
@@ -86,16 +85,16 @@ namespace Kyoo.Core.Api
 		/// <remarks>
 		/// Get the number of resources that match the filters.
 		/// </remarks>
-		/// <param name="where">A list of filters to respect.</param>
+		/// <param name="filter">A list of filters to respect.</param>
 		/// <returns>How many resources matched that filter.</returns>
 		/// <response code="400">Invalid filters.</response>
 		[HttpGet("count")]
 		[PartialPermission(Kind.Read)]
 		[ProducesResponseType(StatusCodes.Status200OK)]
 		[ProducesResponseType(StatusCodes.Status400BadRequest, Type = typeof(RequestError))]
-		public async Task<ActionResult<int>> GetCount([FromQuery] Dictionary<string, string> where)
+		public async Task<ActionResult<int>> GetCount([FromQuery] Filter<T> filter)
 		{
-			return await Repository.GetCount(ApiHelper.ParseWhere<T>(where));
+			return await Repository.GetCount(filter);
 		}
 
 		/// <summary>
@@ -105,7 +104,7 @@ namespace Kyoo.Core.Api
 		/// Get all resources that match the given filter.
 		/// </remarks>
 		/// <param name="sortBy">Sort information about the query (sort by, sort order).</param>
-		/// <param name="where">Filter the returned items.</param>
+		/// <param name="filter">Filter the returned items.</param>
 		/// <param name="pagination">How many items per page should be returned, where should the page start...</param>
 		/// <param name="fields">The aditional fields to include in the result.</param>
 		/// <returns>A list of resources that match every filters.</returns>
@@ -116,15 +115,15 @@ namespace Kyoo.Core.Api
 		[ProducesResponseType(StatusCodes.Status400BadRequest, Type = typeof(RequestError))]
 		public async Task<ActionResult<Page<T>>> GetAll(
 			[FromQuery] Sort<T> sortBy,
-			[FromQuery] Dictionary<string, string> where,
+			[FromQuery] Filter<T>? filter,
 			[FromQuery] Pagination pagination,
 			[FromQuery] Include<T>? fields)
 		{
 			ICollection<T> resources = await Repository.GetAll(
-				ApiHelper.ParseWhere<T>(where),
+				filter,
 				sortBy,
-				pagination,
-				fields
+				fields,
+				pagination
 			);
 
 			return Page(resources, pagination.Limit);
@@ -231,20 +230,19 @@ namespace Kyoo.Core.Api
 		/// <remarks>
 		/// Delete all items matching the given filters. If no filter is specified, delete all items.
 		/// </remarks>
-		/// <param name="where">The list of filters.</param>
+		/// <param name="filter">The list of filters.</param>
 		/// <returns>The item(s) has successfully been deleted.</returns>
 		/// <response code="400">One or multiple filters are invalid.</response>
 		[HttpDelete]
 		[PartialPermission(Kind.Delete)]
 		[ProducesResponseType(StatusCodes.Status204NoContent)]
 		[ProducesResponseType(StatusCodes.Status400BadRequest, Type = typeof(RequestError))]
-		public async Task<IActionResult> Delete([FromQuery] Dictionary<string, string> where)
+		public async Task<IActionResult> Delete([FromQuery] Filter<T> filter)
 		{
-			Expression<Func<T, bool>>? w = ApiHelper.ParseWhere<T>(where);
-			if (w == null)
+			if (filter == null)
 				return BadRequest(new RequestError("Incule a filter to delete items, all items won't be deleted."));
 
-			await Repository.DeleteAll(w);
+			await Repository.DeleteAll(filter);
 			return NoContent();
 		}
 	}
diff --git a/back/src/Kyoo.Core/Views/Metadata/StudioApi.cs b/back/src/Kyoo.Core/Views/Metadata/StudioApi.cs
index 7439af0f..362d24ba 100644
--- a/back/src/Kyoo.Core/Views/Metadata/StudioApi.cs
+++ b/back/src/Kyoo.Core/Views/Metadata/StudioApi.cs
@@ -65,7 +65,7 @@ namespace Kyoo.Core.Api
 		/// </remarks>
 		/// <param name="identifier">The ID or slug of the <see cref="Studio"/>.</param>
 		/// <param name="sortBy">A key to sort shows by.</param>
-		/// <param name="where">An optional list of filters.</param>
+		/// <param name="filter">An optional list of filters.</param>
 		/// <param name="pagination">The number of shows to return.</param>
 		/// <param name="fields">The aditional fields to include in the result.</param>
 		/// <returns>A page of shows.</returns>
@@ -79,15 +79,15 @@ namespace Kyoo.Core.Api
 		[ProducesResponseType(StatusCodes.Status404NotFound)]
 		public async Task<ActionResult<Page<Show>>> GetShows(Identifier identifier,
 			[FromQuery] Sort<Show> sortBy,
-			[FromQuery] Dictionary<string, string> where,
+			[FromQuery] Filter<Show>? filter,
 			[FromQuery] Pagination pagination,
 			[FromQuery] Include<Show> fields)
 		{
 			ICollection<Show> resources = await _libraryManager.Shows.GetAll(
-				ApiHelper.ParseWhere(where, identifier.Matcher<Show>(x => x.StudioId, x => x.Studio!.Slug)),
+				Filter.And(filter, identifier.Matcher<Show>(x => x.StudioId, x => x.Studio!.Slug)),
 				sortBy,
-				pagination,
-				fields
+				fields,
+				pagination
 			);
 
 			if (!resources.Any() && await _libraryManager.Studios.GetOrDefault(identifier.IsSame<Studio>()) == null)
diff --git a/back/src/Kyoo.Core/Views/Resources/CollectionApi.cs b/back/src/Kyoo.Core/Views/Resources/CollectionApi.cs
index c4289488..e8d3d285 100644
--- a/back/src/Kyoo.Core/Views/Resources/CollectionApi.cs
+++ b/back/src/Kyoo.Core/Views/Resources/CollectionApi.cs
@@ -126,7 +126,7 @@ namespace Kyoo.Core.Api
 		/// </remarks>
 		/// <param name="identifier">The ID or slug of the <see cref="Collection"/>.</param>
 		/// <param name="sortBy">A key to sort items by.</param>
-		/// <param name="where">An optional list of filters.</param>
+		/// <param name="filter">An optional list of filters.</param>
 		/// <param name="pagination">The number of items to return.</param>
 		/// <param name="fields">The aditional fields to include in the result.</param>
 		/// <returns>A page of items.</returns>
@@ -140,21 +140,21 @@ namespace Kyoo.Core.Api
 		[ProducesResponseType(StatusCodes.Status404NotFound)]
 		public async Task<ActionResult<Page<ILibraryItem>>> GetItems(Identifier identifier,
 			[FromQuery] Sort<ILibraryItem> sortBy,
-			[FromQuery] Dictionary<string, string> where,
+			[FromQuery] Filter<ILibraryItem>? filter,
 			[FromQuery] Pagination pagination,
 			[FromQuery] Include<ILibraryItem>? fields)
 		{
-			ICollection<ILibraryItem> resources = await _items.GetAllOfCollection(
-				identifier.IsSame<Collection>(),
-				ApiHelper.ParseWhere<ILibraryItem>(where),
-				sortBy == new Sort<ILibraryItem>.Default() ? new Sort<ILibraryItem>.By(nameof(Movie.AirDate)) : sortBy,
-				pagination,
-				fields
-			);
+			// ICollection<ILibraryItem> resources = await _items.GetAllOfCollection(
+			// 	identifier.IsSame<Collection>(),
+			// 	filter,
+			// 	sortBy == new Sort<ILibraryItem>.Default() ? new Sort<ILibraryItem>.By(nameof(Movie.AirDate)) : sortBy,
+			// 	pagination,
+			// 	fields
+			// );
 
-			if (!resources.Any() && await _libraryManager.Collections.GetOrDefault(identifier.IsSame<Collection>()) == null)
+			// if (!resources.Any() && await _libraryManager.Collections.GetOrDefault(identifier.IsSame<Collection>()) == null)
 				return NotFound();
-			return Page(resources, pagination.Limit);
+			// return Page(resources, pagination.Limit);
 		}
 
 		/// <summary>
@@ -165,9 +165,9 @@ namespace Kyoo.Core.Api
 		/// </remarks>
 		/// <param name="identifier">The ID or slug of the <see cref="Collection"/>.</param>
 		/// <param name="sortBy">A key to sort shows by.</param>
-		/// <param name="where">An optional list of filters.</param>
+		/// <param name="filter">An optional list of filters.</param>
 		/// <param name="pagination">The number of shows to return.</param>
-		/// <param name="fields">The aditional fields to include in the result.</param>
+		/// <param name="fields">The additional fields to include in the result.</param>
 		/// <returns>A page of shows.</returns>
 		/// <response code="400">The filters or the sort parameters are invalid.</response>
 		/// <response code="404">No collection with the given ID could be found.</response>
@@ -179,15 +179,15 @@ namespace Kyoo.Core.Api
 		[ProducesResponseType(StatusCodes.Status404NotFound)]
 		public async Task<ActionResult<Page<Show>>> GetShows(Identifier identifier,
 			[FromQuery] Sort<Show> sortBy,
-			[FromQuery] Dictionary<string, string> where,
+			[FromQuery] Filter<Show>? filter,
 			[FromQuery] Pagination pagination,
 			[FromQuery] Include<Show>? fields)
 		{
 			ICollection<Show> resources = await _libraryManager.Shows.GetAll(
-				ApiHelper.ParseWhere(where, identifier.IsContainedIn<Show, Collection>(x => x.Collections!)),
+				Filter.And(filter, identifier.IsContainedIn<Show, Collection>(x => x.Collections)),
 				sortBy == new Sort<Show>.Default() ? new Sort<Show>.By(x => x.AirDate) : sortBy,
-				pagination,
-				fields
+				fields,
+				pagination
 			);
 
 			if (!resources.Any() && await _libraryManager.Collections.GetOrDefault(identifier.IsSame<Collection>()) == null)
@@ -203,7 +203,7 @@ namespace Kyoo.Core.Api
 		/// </remarks>
 		/// <param name="identifier">The ID or slug of the <see cref="Collection"/>.</param>
 		/// <param name="sortBy">A key to sort movies by.</param>
-		/// <param name="where">An optional list of filters.</param>
+		/// <param name="filter">An optional list of filters.</param>
 		/// <param name="pagination">The number of movies to return.</param>
 		/// <param name="fields">The aditional fields to include in the result.</param>
 		/// <returns>A page of movies.</returns>
@@ -217,15 +217,15 @@ namespace Kyoo.Core.Api
 		[ProducesResponseType(StatusCodes.Status404NotFound)]
 		public async Task<ActionResult<Page<Movie>>> GetMovies(Identifier identifier,
 			[FromQuery] Sort<Movie> sortBy,
-			[FromQuery] Dictionary<string, string> where,
+			[FromQuery] Filter<Movie>? filter,
 			[FromQuery] Pagination pagination,
 			[FromQuery] Include<Movie>? fields)
 		{
 			ICollection<Movie> resources = await _libraryManager.Movies.GetAll(
-				ApiHelper.ParseWhere(where, identifier.IsContainedIn<Movie, Collection>(x => x.Collections!)),
+				Filter.And(filter, identifier.IsContainedIn<Movie, Collection>(x => x.Collections)),
 				sortBy == new Sort<Movie>.Default() ? new Sort<Movie>.By(x => x.AirDate) : sortBy,
-				pagination,
-				fields
+				fields,
+				pagination
 			);
 
 			if (!resources.Any() && await _libraryManager.Collections.GetOrDefault(identifier.IsSame<Collection>()) == null)
diff --git a/back/src/Kyoo.Core/Views/Resources/MovieApi.cs b/back/src/Kyoo.Core/Views/Resources/MovieApi.cs
index da0ae654..6cfec030 100644
--- a/back/src/Kyoo.Core/Views/Resources/MovieApi.cs
+++ b/back/src/Kyoo.Core/Views/Resources/MovieApi.cs
@@ -120,7 +120,7 @@ namespace Kyoo.Core.Api
 		/// </remarks>
 		/// <param name="identifier">The ID or slug of the <see cref="Show"/>.</param>
 		/// <param name="sortBy">A key to sort collections by.</param>
-		/// <param name="where">An optional list of filters.</param>
+		/// <param name="filter">An optional list of filters.</param>
 		/// <param name="pagination">The number of collections to return.</param>
 		/// <param name="fields">The aditional fields to include in the result.</param>
 		/// <returns>A page of collections.</returns>
@@ -134,15 +134,15 @@ namespace Kyoo.Core.Api
 		[ProducesResponseType(StatusCodes.Status404NotFound)]
 		public async Task<ActionResult<Page<Collection>>> GetCollections(Identifier identifier,
 			[FromQuery] Sort<Collection> sortBy,
-			[FromQuery] Dictionary<string, string> where,
+			[FromQuery] Filter<Collection>? filter,
 			[FromQuery] Pagination pagination,
 			[FromQuery] Include<Collection> fields)
 		{
 			ICollection<Collection> resources = await _libraryManager.Collections.GetAll(
-				ApiHelper.ParseWhere(where, identifier.IsContainedIn<Collection, Movie>(x => x.Movies!)),
+				Filter.And(filter, identifier.IsContainedIn<Collection, Movie>(x => x.Movies)),
 				sortBy,
-				pagination,
-				fields
+				fields,
+				pagination
 			);
 
 			if (!resources.Any() && await _libraryManager.Movies.GetOrDefault(identifier.IsSame<Movie>()) == null)
diff --git a/back/src/Kyoo.Core/Views/Resources/NewsApi.cs b/back/src/Kyoo.Core/Views/Resources/NewsApi.cs
index c75b7a8f..9127b7b5 100644
--- a/back/src/Kyoo.Core/Views/Resources/NewsApi.cs
+++ b/back/src/Kyoo.Core/Views/Resources/NewsApi.cs
@@ -16,13 +16,10 @@
 // You should have received a copy of the GNU General Public License
 // along with Kyoo. If not, see <https://www.gnu.org/licenses/>.
 
-using System.Collections.Generic;
-using System.Threading.Tasks;
 using Kyoo.Abstractions.Controllers;
 using Kyoo.Abstractions.Models;
 using Kyoo.Abstractions.Models.Attributes;
 using Kyoo.Abstractions.Models.Permissions;
-using Kyoo.Core.Controllers;
 using Microsoft.AspNetCore.Mvc;
 using static Kyoo.Abstractions.Models.Utils.Constants;
 
@@ -37,25 +34,10 @@ namespace Kyoo.Core.Api
 	[ResourceView]
 	[PartialPermission("LibraryItem")]
 	[ApiDefinition("News", Group = ResourcesGroup)]
-	public class NewsApi : BaseApi
+	public class NewsApi : CrudThumbsApi<News>
 	{
-		private readonly NewsRepository _news;
-
-		public NewsApi(NewsRepository news)
-		{
-			_news = news;
-		}
-
-		public async Task<ActionResult<Page<News>>> GetAll(
-			[FromQuery] Dictionary<string, string> where,
-			[FromQuery] Pagination pagination)
-		{
-			ICollection<News> resources = await _news.GetAll(
-				ApiHelper.ParseWhere<News>(where),
-				limit: pagination
-			);
-
-			return Page(resources, pagination.Limit);
-		}
+		public NewsApi(IRepository<News> news, IThumbnailsManager thumbs)
+			: base(news, thumbs)
+		{ }
 	}
 }
diff --git a/back/src/Kyoo.Core/Views/Resources/SeasonApi.cs b/back/src/Kyoo.Core/Views/Resources/SeasonApi.cs
index a878acc1..df276170 100644
--- a/back/src/Kyoo.Core/Views/Resources/SeasonApi.cs
+++ b/back/src/Kyoo.Core/Views/Resources/SeasonApi.cs
@@ -67,7 +67,7 @@ namespace Kyoo.Core.Api
 		/// </remarks>
 		/// <param name="identifier">The ID or slug of the <see cref="Season"/>.</param>
 		/// <param name="sortBy">A key to sort episodes by.</param>
-		/// <param name="where">An optional list of filters.</param>
+		/// <param name="filter">An optional list of filters.</param>
 		/// <param name="pagination">The number of episodes to return.</param>
 		/// <param name="fields">The aditional fields to include in the result.</param>
 		/// <returns>A page of episodes.</returns>
@@ -81,15 +81,15 @@ namespace Kyoo.Core.Api
 		[ProducesResponseType(StatusCodes.Status404NotFound)]
 		public async Task<ActionResult<Page<Episode>>> GetEpisode(Identifier identifier,
 			[FromQuery] Sort<Episode> sortBy,
-			[FromQuery] Dictionary<string, string> where,
+			[FromQuery] Filter<Episode>? filter,
 			[FromQuery] Pagination pagination,
 			[FromQuery] Include<Episode> fields)
 		{
 			ICollection<Episode> resources = await _libraryManager.Episodes.GetAll(
-				ApiHelper.ParseWhere(where, identifier.Matcher<Episode>(x => x.SeasonId, x => x.Season!.Slug)),
+				Filter.And(filter, identifier.Matcher<Episode>(x => x.SeasonId, x => x.Season!.Slug)),
 				sortBy,
-				pagination,
-				fields
+				fields,
+				pagination
 			);
 
 			if (!resources.Any() && await _libraryManager.Seasons.GetOrDefault(identifier.IsSame<Season>()) == null)
diff --git a/back/src/Kyoo.Core/Views/Resources/ShowApi.cs b/back/src/Kyoo.Core/Views/Resources/ShowApi.cs
index 861bce7f..077b99dd 100644
--- a/back/src/Kyoo.Core/Views/Resources/ShowApi.cs
+++ b/back/src/Kyoo.Core/Views/Resources/ShowApi.cs
@@ -67,7 +67,7 @@ namespace Kyoo.Core.Api
 		/// </remarks>
 		/// <param name="identifier">The ID or slug of the <see cref="Show"/>.</param>
 		/// <param name="sortBy">A key to sort seasons by.</param>
-		/// <param name="where">An optional list of filters.</param>
+		/// <param name="filter">An optional list of filters.</param>
 		/// <param name="pagination">The number of seasons to return.</param>
 		/// <param name="fields">The aditional fields to include in the result.</param>
 		/// <returns>A page of seasons.</returns>
@@ -81,15 +81,15 @@ namespace Kyoo.Core.Api
 		[ProducesResponseType(StatusCodes.Status404NotFound)]
 		public async Task<ActionResult<Page<Season>>> GetSeasons(Identifier identifier,
 			[FromQuery] Sort<Season> sortBy,
-			[FromQuery] Dictionary<string, string> where,
+			[FromQuery] Filter<Season>? filter,
 			[FromQuery] Pagination pagination,
 			[FromQuery] Include<Season> fields)
 		{
 			ICollection<Season> resources = await _libraryManager.Seasons.GetAll(
-				ApiHelper.ParseWhere(where, identifier.Matcher<Season>(x => x.ShowId, x => x.Show!.Slug)),
+				Filter.And(filter, identifier.Matcher<Season>(x => x.ShowId, x => x.Show!.Slug)),
 				sortBy,
-				pagination,
-				fields
+				fields,
+				pagination
 			);
 
 			if (!resources.Any() && await _libraryManager.Shows.GetOrDefault(identifier.IsSame<Show>()) == null)
@@ -105,7 +105,7 @@ namespace Kyoo.Core.Api
 		/// </remarks>
 		/// <param name="identifier">The ID or slug of the <see cref="Show"/>.</param>
 		/// <param name="sortBy">A key to sort episodes by.</param>
-		/// <param name="where">An optional list of filters.</param>
+		/// <param name="filter">An optional list of filters.</param>
 		/// <param name="pagination">The number of episodes to return.</param>
 		/// <param name="fields">The aditional fields to include in the result.</param>
 		/// <returns>A page of episodes.</returns>
@@ -119,15 +119,15 @@ namespace Kyoo.Core.Api
 		[ProducesResponseType(StatusCodes.Status404NotFound)]
 		public async Task<ActionResult<Page<Episode>>> GetEpisodes(Identifier identifier,
 			[FromQuery] Sort<Episode> sortBy,
-			[FromQuery] Dictionary<string, string> where,
+			[FromQuery] Filter<Episode>? filter,
 			[FromQuery] Pagination pagination,
 			[FromQuery] Include<Episode> fields)
 		{
 			ICollection<Episode> resources = await _libraryManager.Episodes.GetAll(
-				ApiHelper.ParseWhere(where, identifier.Matcher<Episode>(x => x.ShowId, x => x.Show!.Slug)),
+				Filter.And(filter, identifier.Matcher<Episode>(x => x.ShowId, x => x.Show!.Slug)),
 				sortBy,
-				pagination,
-				fields
+				fields,
+				pagination
 			);
 
 			if (!resources.Any() && await _libraryManager.Shows.GetOrDefault(identifier.IsSame<Show>()) == null)
@@ -197,7 +197,7 @@ namespace Kyoo.Core.Api
 		/// </remarks>
 		/// <param name="identifier">The ID or slug of the <see cref="Show"/>.</param>
 		/// <param name="sortBy">A key to sort collections by.</param>
-		/// <param name="where">An optional list of filters.</param>
+		/// <param name="filter">An optional list of filters.</param>
 		/// <param name="pagination">The number of collections to return.</param>
 		/// <param name="fields">The aditional fields to include in the result.</param>
 		/// <returns>A page of collections.</returns>
@@ -211,15 +211,15 @@ namespace Kyoo.Core.Api
 		[ProducesResponseType(StatusCodes.Status404NotFound)]
 		public async Task<ActionResult<Page<Collection>>> GetCollections(Identifier identifier,
 			[FromQuery] Sort<Collection> sortBy,
-			[FromQuery] Dictionary<string, string> where,
+			[FromQuery] Filter<Collection>? filter,
 			[FromQuery] Pagination pagination,
 			[FromQuery] Include<Collection> fields)
 		{
 			ICollection<Collection> resources = await _libraryManager.Collections.GetAll(
-				ApiHelper.ParseWhere(where, identifier.IsContainedIn<Collection, Show>(x => x.Shows!)),
+				Filter.And(filter, identifier.IsContainedIn<Collection, Show>(x => x.Shows!)),
 				sortBy,
-				pagination,
-				fields
+				fields,
+				pagination
 			);
 
 			if (!resources.Any() && await _libraryManager.Shows.GetOrDefault(identifier.IsSame<Show>()) == null)
diff --git a/back/src/Kyoo.Postgresql/DatabaseContext.cs b/back/src/Kyoo.Postgresql/DatabaseContext.cs
index b6345ac0..547d4b3c 100644
--- a/back/src/Kyoo.Postgresql/DatabaseContext.cs
+++ b/back/src/Kyoo.Postgresql/DatabaseContext.cs
@@ -541,14 +541,5 @@ namespace Kyoo.Postgresql
 				entry.State = EntityState.Detached;
 			}
 		}
-
-		/// <summary>
-		/// Perform a case insensitive like operation.
-		/// </summary>
-		/// <param name="query">An accessor to get the item that will be checked.</param>
-		/// <param name="format">The second operator of the like format.</param>
-		/// <typeparam name="T">The type of the item to query</typeparam>
-		/// <returns>An expression representing the like query. It can directly be passed to a where call.</returns>
-		public abstract Expression<Func<T, bool>> Like<T>(Expression<Func<T, string>> query, string format);
 	}
 }
diff --git a/back/src/Kyoo.Postgresql/PostgresContext.cs b/back/src/Kyoo.Postgresql/PostgresContext.cs
index 0f6b25bb..4a04b8c5 100644
--- a/back/src/Kyoo.Postgresql/PostgresContext.cs
+++ b/back/src/Kyoo.Postgresql/PostgresContext.cs
@@ -139,14 +139,5 @@ namespace Kyoo.Postgresql
 		{
 			return ex.InnerException is PostgresException { SqlState: PostgresErrorCodes.UniqueViolation };
 		}
-
-		/// <inheritdoc />
-		public override Expression<Func<T, bool>> Like<T>(Expression<Func<T, string>> query, string format)
-		{
-			MethodInfo iLike = MethodOfUtils.MethodOf<string, string, bool>(EF.Functions.ILike);
-			MethodCallExpression call = Expression.Call(iLike, Expression.Constant(EF.Functions), query.Body, Expression.Constant(format));
-
-			return Expression.Lambda<Func<T, bool>>(call, query.Parameters);
-		}
 	}
 }
diff --git a/back/src/Kyoo.Postgresql/Utils/ListTypeHandler.cs b/back/src/Kyoo.Postgresql/Utils/ListTypeHandler.cs
index 8f20f9ba..77b88845 100644
--- a/back/src/Kyoo.Postgresql/Utils/ListTypeHandler.cs
+++ b/back/src/Kyoo.Postgresql/Utils/ListTypeHandler.cs
@@ -1,3 +1,21 @@
+// Kyoo - A portable and vast media library solution.
+// Copyright (c) Kyoo.
+//
+// See AUTHORS.md and LICENSE file in the project root for full license information.
+//
+// Kyoo is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// any later version.
+//
+// Kyoo is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Kyoo. If not, see <https://www.gnu.org/licenses/>.
+
 using System.Collections.Generic;
 using System.Data;
 using System.Linq;
diff --git a/back/tests/Kyoo.Tests/Database/RepositoryActivator.cs b/back/tests/Kyoo.Tests/Database/RepositoryActivator.cs
index 08b914fe..292a22f5 100644
--- a/back/tests/Kyoo.Tests/Database/RepositoryActivator.cs
+++ b/back/tests/Kyoo.Tests/Database/RepositoryActivator.cs
@@ -89,7 +89,7 @@ namespace Kyoo.Tests.Database
 		}
 
 		public IRepository<T> GetRepository<T>()
-			where T : class, IResource
+			where T : class, IResource, IQuery
 		{
 			return _repositories.First(x => x.RepositoryType == typeof(T)) as IRepository<T>;
 		}
diff --git a/back/tests/Kyoo.Tests/Database/RepositoryTests.cs b/back/tests/Kyoo.Tests/Database/RepositoryTests.cs
index ae4b10d3..78592000 100644
--- a/back/tests/Kyoo.Tests/Database/RepositoryTests.cs
+++ b/back/tests/Kyoo.Tests/Database/RepositoryTests.cs
@@ -29,7 +29,7 @@ using Xunit;
 namespace Kyoo.Tests.Database
 {
 	public abstract class RepositoryTests<T> : IDisposable, IAsyncDisposable
-		where T : class, IResource
+		where T : class, IResource, IQuery
 	{
 		protected readonly RepositoryActivator Repositories;
 		private readonly IRepository<T> _repository;