Created UserService

FabApprovalWorkerService/Services/UserService.cs

@@ -0,0 +1,65 @@
+using Dapper;
+using Dapper.Contrib.Extensions;
+
+using FabApprovalWorkerService.Models;
+
+using System.Data;
+using System.Diagnostics.CodeAnalysis;
+
+namespace FabApprovalWorkerService.Services;
+
+public interface IUserService {
+    Task<Dictionary<string, User>> GetAllUsers();
+    Task<bool> UpdateUserCertificationData([DisallowNull] ICollection<User> users);
+}
+
+public class UserService : IUserService {
+    private readonly ILogger<UserService> _logger;
+    private IDalService _dalService;
+
+    public UserService(ILogger<UserService> logger, IDalService dalService) {
+        _logger = logger;
+        _dalService = dalService;
+    }
+
+    public async Task<Dictionary<string, User>> GetAllUsers() {
+        Dictionary<string, User> users = new Dictionary<string, User>();
+
+        try {
+            _logger.LogInformation("Attempting to get all users");
+
+            string sql = "select * from users;";
+
+            IEnumerable<User> enumerableUsers = await _dalService.QueryAsync<User>(sql);
+            users = enumerableUsers.ToDictionary(u => u.FirstName + u.LastName, u => u);
+
+            if (!users.Any()) {
+                throw new Exception("No users returned from the database");
+            } else {
+                _logger.LogInformation("Successfully retrieved the users");
+            }
+
+            return users;
+        } catch (Exception ex) {
+            _logger.LogError("An exception occurred when attempting to get all users. Exception: {ex}", ex.Message);
+            return users;
+        }
+    }
+
+    public async Task<bool> UpdateUserCertificationData([DisallowNull] ICollection<User> users) {
+        if (users is null) throw new ArgumentNullException("users cannot be null");
+
+        try {
+            _logger.LogInformation("Attempting to update user cert data");
+
+            bool result = await _dalService.UpdateAsync(users);
+
+            _logger.LogInformation("User cert data updated successfully: {result}", result);
+
+            return result;
+        } catch (Exception ex) {
+            _logger.LogError("An exception occurred when attempting to update user cert data. Exception: {ex}", ex.Message);
+            return false;
+        }
+    }
+}