First Commit

Infrastructure/Identity/KeycloakConfiguration.cs

@@ -0,0 +1,15 @@
+namespace Musify.Infrastructure.Identity
+{
+    public class KeycloakConfiguration
+    {
+        public const string SectionName = "Keycloak";
+
+        public string BaseUrl { get; set; } = string.Empty;
+
+        public string Realm { get; set; } = string.Empty;
+
+        public string Username { get; set; } = string.Empty;
+
+        public string Password { get; set; } = string.Empty;
+    }
+}

Infrastructure/Identity/KeycloakIdentityService.cs

@@ -0,0 +1,61 @@
+using Ardalis.Result;
+using Keycloak.Net;
+using Keycloak.Net.Models.Users;
+using Microsoft.Extensions.Logging;
+using Musify.Application.Contracts.Infrastructure;
+using Musify.Application.Users.Contracts;
+
+namespace Musify.Infrastructure.Identity
+{
+    public class KeycloakIdentityService(
+        KeycloakClient keycloakClient,
+        KeycloakConfiguration keycloakConfiguration,
+        ILogger<KeycloakIdentityService> logger) : IKeycloakUserClient
+    {
+        public async Task<Result<KeycloakUserResponse>> GetUserByIdAsync(string keycloakId, CancellationToken cancellationToken)
+        {
+            User keycloakUser;
+
+            try
+            {
+                keycloakUser = await keycloakClient.GetUserAsync(keycloakConfiguration.Realm, keycloakId, cancellationToken);
+            }
+            catch (OperationCanceledException)
+            {
+                throw;
+            }
+            catch (Exception exception)
+            {
+                logger.LogWarning(exception, "Keycloak user with id {KeycloakId} could not be retrieved.", keycloakId);
+
+                return Result.NotFound();
+            }
+
+            return Result.Success(KeycloakUserMapper.Map(keycloakUser));
+        }
+
+        public async Task<IReadOnlyCollection<KeycloakUserResponse>> GetUsersAsync(CancellationToken cancellationToken, string search = "", int first = 0, int max = 20, string username = "")
+        {
+            var users = await keycloakClient.GetUsersAsync(
+                realm: keycloakConfiguration.Realm,
+                first: first,
+                max: max,
+                search: search,
+                username: username,
+                cancellationToken: cancellationToken);
+
+            return users
+                .Select(KeycloakUserMapper.Map)
+                .ToArray();
+        }
+
+        public Task<int> GetUsersCountAsync(CancellationToken cancellationToken, string search = "", string username = "")
+        {
+            return keycloakClient.GetUsersCountAsync(
+                keycloakConfiguration.Realm,
+                search: search,
+                username: username,
+                cancellationToken: cancellationToken);
+        }
+    }
+}

Infrastructure/Identity/KeycloakUserMapper.cs

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+using Keycloak.Net.Models.Users;
+using Musify.Application.Users.Contracts;
+
+namespace Musify.Infrastructure.Identity
+{
+    public static class KeycloakUserMapper
+    {
+        public static KeycloakUserResponse Map(User keycloakUser)
+        {
+            return new KeycloakUserResponse(
+                Guid.Parse(keycloakUser.Id ?? throw new InvalidOperationException("Keycloak user Id is required.")),
+                keycloakUser.UserName ?? throw new InvalidOperationException("Keycloak user Name is required."),
+                keycloakUser.FirstName ?? throw new InvalidOperationException("Keycloak user FirstName is required."),
+                keycloakUser.LastName ?? throw new InvalidOperationException("Keycloak user SecondName is required."));
+        }
+    }
+}