вторая лабораторная

2024-12-22 18:36:19 +04:00 · 2024-12-22 18:36:19 +04:00 · b9a4d027d7
commit b9a4d027d7
parent bf23306693
10 changed files with 593 additions and 59 deletions
--- a/ProjectSchedule/ProjectSchedule/Program.cs
+++ b/ProjectSchedule/ProjectSchedule/Program.cs
@ -1,7 +1,11 @@
+using Microsoft.Extensions.Configuration;
+using Microsoft.Extensions.Logging;
 using ProjectSchedule.Repositories;
 using ProjectSchedule.Repositories.Implementations;
+using Serilog;
 using Unity;
 using Unity.Lifetime;
+using Unity.Microsoft.Logging;

 namespace ProjectSchedule
 {
@ -22,13 +26,27 @@ namespace ProjectSchedule
        private static IUnityContainer CreateUnityContainer()
        {
            var container = new UnityContainer();
+            container.AddExtension(new LoggingExtension(CreateLoggerFactory()));
            container.RegisterType<IAudienceRepository, AudienceRepository>(new TransientLifetimeManager());
            container.RegisterType<ITeacherRepository, TeacherRepository>(new TransientLifetimeManager());
            container.RegisterType<IGroupRepository, GroupRepository>(new TransientLifetimeManager());
            container.RegisterType<IStudingPlanSupplementRepository, StudingPlanSupplementRepository>(new TransientLifetimeManager());
            container.RegisterType<IDisciplineRepository, DisciplineRepository>(new TransientLifetimeManager());
            container.RegisterType<IScheduleRepository, ScheduleRepository>(new TransientLifetimeManager());
+            container.RegisterType<IConnectionString, ConnectionString>(new SingletonLifetimeManager());
            return container;
        }
+
+        private static LoggerFactory CreateLoggerFactory()
+        {
+            var loggerFactory = new LoggerFactory();
+            loggerFactory.AddSerilog(new LoggerConfiguration()
+                .ReadFrom.Configuration(new ConfigurationBuilder()
+                    .SetBasePath(Directory.GetCurrentDirectory())
+                    .AddJsonFile("appsettings.json")
+                    .Build())
+                .CreateLogger());
+            return loggerFactory;
+        }
    }
 }
--- a/ProjectSchedule/ProjectSchedule/Repositories/IConnectionString.cs
+++ b/ProjectSchedule/ProjectSchedule/Repositories/IConnectionString.cs
@ -0,0 +1,6 @@
+namespace ProjectSchedule.Repositories;
+
+public interface IConnectionString
+{
+    public string ConnectionString { get; }
+}
--- a/ProjectSchedule/ProjectSchedule/Repositories/Implementations/AudienceRepository.cs
+++ b/ProjectSchedule/ProjectSchedule/Repositories/Implementations/AudienceRepository.cs
@ -1,29 +1,120 @@
-using ProjectSchedule.Entities;
-using ProjectSchedule.Entities.Enums;
+using Dapper;
+using Microsoft.Extensions.Logging;
+using Newtonsoft.Json;
+using Npgsql;
+using ProjectSchedule.Entities;

 namespace ProjectSchedule.Repositories.Implementations;

 public class AudienceRepository : IAudienceRepository
 {
+    private readonly IConnectionString _connectionString;
+
+    private readonly ILogger<AudienceRepository> _logger;
+
+    public AudienceRepository(IConnectionString connectionString, ILogger<AudienceRepository> logger)
+    {
+        _connectionString = connectionString;
+        _logger = logger;
+    }
+
    public void CreateAudience(Audience audience)
    {
-    }
-
-    public void DeleteAudience(int id)
+        _logger.LogInformation("Добавление объекта");
+        _logger.LogDebug("Объект: {json}", JsonConvert.SerializeObject(audience));
+        try
        {
+            using var connection = new NpgsqlConnection(_connectionString.ConnectionString);
+            var queryInsert = @"
+                INSERT INTO Audience (Number, TypeAudience, SeatsCount)
+                VALUES (@Number, @TypeAudience, @SeatsCount)";
+            connection.Execute(queryInsert, audience);
        }
-
-    public Audience ReadAudienceById(int id)
+        catch (Exception ex)
        {
-        return Audience.CreateEntity(0, string.Empty, TypeAudience.None, 0);
+            _logger.LogError(ex, "Ошибка при добавлении объекта");
+            throw;
        }
-
-    public IEnumerable<Audience> ReadAudiences()
-    {
-        return [];
    }

    public void UpdateAudience(Audience audience)
    {
+        _logger.LogInformation("Редактирование объекта");
+        _logger.LogDebug("Объект: {json}", JsonConvert.SerializeObject(audience));
+        try
+        {
+            using var connection = new NpgsqlConnection(_connectionString.ConnectionString);
+            var queryUpdate = @"
+                UPDATE Audience
+                SET
+                    Number=@Number,
+                    TypeAudience=@TypeAudience,
+                    SeatsCount=@SeatsCount
+                WHERE Id=@Id";
+            connection.Execute(queryUpdate, audience);
+        }
+        catch (Exception ex)
+        {
+            _logger.LogError(ex, "Ошибка при редактировании объекта");
+            throw;
+        }
+    }
+
+    public void DeleteAudience(int id)
+    {
+        _logger.LogInformation("Удаление объекта");
+        _logger.LogDebug("Объект: {id}", id);
+        try
+        {
+            using var connection = new NpgsqlConnection(_connectionString.ConnectionString);
+            var queryDelete = @"
+                DELETE FROM Audience
+                WHERE Id=@id";
+            connection.Execute(queryDelete, new { id });
+        }
+        catch (Exception ex)
+        {
+            _logger.LogError(ex, "Ошибка при удалении объекта");
+            throw;
+        }
+    }
+
+    public Audience ReadAudienceById(int id)
+    {
+        _logger.LogInformation("Получение объекта по идентификатору");
+        _logger.LogDebug("Объект: {id}", id);
+        try
+        {
+            using var connection = new NpgsqlConnection(_connectionString.ConnectionString);
+            var querySelect = @"
+                SELECT * FROM Audience
+                WHERE Id=@id";
+            var audience = connection.QueryFirst<Audience>(querySelect, new { id });
+            _logger.LogDebug("Найденный объект: {json}", JsonConvert.SerializeObject(audience));
+            return audience;
+        }
+        catch (Exception ex)
+        {
+            _logger.LogError(ex, "Ошибка при поиске объекта");
+            throw;
+        }
+    }
+
+    public IEnumerable<Audience> ReadAudiences()
+    {
+        _logger.LogInformation("Получение всех объектов");
+        try
+        {
+            using var connection = new NpgsqlConnection(_connectionString.ConnectionString);
+            var querySelect = "SELECT * FROM Audience";
+            var audiences = connection.Query<Audience>(querySelect);
+            _logger.LogDebug("Полученные объекты: {json}", JsonConvert.SerializeObject(audiences));
+            return audiences;
+        }
+        catch (Exception ex)
+        {
+            _logger.LogError(ex, "Ошибка при чтении объектов");
+            throw;
+        }
    }
 }
--- a/ProjectSchedule/ProjectSchedule/Repositories/Implementations/ConnectionString.cs
+++ b/ProjectSchedule/ProjectSchedule/Repositories/Implementations/ConnectionString.cs
@ -0,0 +1,6 @@
+namespace ProjectSchedule.Repositories.Implementations;
+
+internal class ConnectionString : IConnectionString
+{
+    string IConnectionString.ConnectionString => "Host=127.0.0.1;Database=postgres;Username=postgres;Password=ishtuganov";
+}
--- a/ProjectSchedule/ProjectSchedule/Repositories/Implementations/DisciplineRepository.cs
+++ b/ProjectSchedule/ProjectSchedule/Repositories/Implementations/DisciplineRepository.cs
@ -1,28 +1,118 @@
-using ProjectSchedule.Entities;
+using Dapper;
+using Microsoft.Extensions.Logging;
+using Newtonsoft.Json;
+using Npgsql;
+using ProjectSchedule.Entities;

 namespace ProjectSchedule.Repositories.Implementations;

 public class DisciplineRepository : IDisciplineRepository
 {
+    private readonly IConnectionString _connectionString;
+
+    private readonly ILogger<DisciplineRepository> _logger;
+
+    public DisciplineRepository(IConnectionString connectionString, ILogger<DisciplineRepository> logger)
+    {
+        _connectionString = connectionString;
+        _logger = logger;
+    }
+
    public void CreateDiscipline(Discipline discipline)
    {
-    }
-
-    public void DeleteDiscipline(int id)
+        _logger.LogInformation("Добавление объекта");
+        _logger.LogDebug("Объект: {json}", JsonConvert.SerializeObject(discipline));
+        try
        {
+            using var connection = new NpgsqlConnection(_connectionString.ConnectionString);
+            var queryInsert = @"
+                INSERT INTO Discipline (Name)
+                VALUES (@Name)";
+            connection.Execute(queryInsert, discipline);
        }
-
-    public Discipline ReadDisciplineById(int id)
+        catch (Exception ex)
        {
-        return Discipline.CreateEntity(0, string.Empty);
+            _logger.LogError(ex, "Ошибка при добавлении объекта");
+            throw;
        }
-
-    public IEnumerable<Discipline> ReadDisciplines()
-    {
-        return [];
    }

    public void UpdateDiscipline(Discipline discipline)
    {
+        _logger.LogInformation("Редактирование объекта");
+        _logger.LogDebug("Объект: {json}", JsonConvert.SerializeObject(discipline));
+        try
+        {
+            using var connection = new NpgsqlConnection(_connectionString.ConnectionString);
+            var queryUpdate = @"
+                UPDATE Discipline
+                SET
+                    Name=@Name
+                WHERE Id=@Id";
+            connection.Execute(queryUpdate, discipline);
+        }
+        catch (Exception ex)
+        {
+            _logger.LogError(ex, "Ошибка при редактировании объекта");
+            throw;
+        }
+    }
+
+    public void DeleteDiscipline(int id)
+    {
+        _logger.LogInformation("Удаление объекта");
+        _logger.LogDebug("Объект: {id}", id);
+        try
+        {
+            using var connection = new NpgsqlConnection(_connectionString.ConnectionString);
+            var queryDelete = @"
+                DELETE FROM Discipline
+                WHERE Id=@id";
+            connection.Execute(queryDelete, new { id });
+        }
+        catch (Exception ex)
+        {
+            _logger.LogError(ex, "Ошибка при удалении объекта");
+            throw;
+        }
+    }
+
+    public Discipline ReadDisciplineById(int id)
+    {
+        _logger.LogInformation("Получение объекта по идентификатору");
+        _logger.LogDebug("Объект: {id}", id);
+        try
+        {
+            using var connection = new NpgsqlConnection(_connectionString.ConnectionString);
+            var querySelect = @"
+                SELECT * FROM Discipline
+                WHERE Id=@id";
+            var discipline = connection.QueryFirst<Discipline>(querySelect, new { id });
+            _logger.LogDebug("Найденный объект: {json}", JsonConvert.SerializeObject(discipline));
+            return discipline;
+        }
+        catch (Exception ex)
+        {
+            _logger.LogError(ex, "Ошибка при поиске объекта");
+            throw;
+        }
+    }
+
+    public IEnumerable<Discipline> ReadDisciplines()
+    {
+        _logger.LogInformation("Получение всех объектов");
+        try
+        {
+            using var connection = new NpgsqlConnection(_connectionString.ConnectionString);
+            var querySelect = "SELECT * FROM Discipline";
+            var disciplines = connection.Query<Discipline>(querySelect);
+            _logger.LogDebug("Полученные объекты: {json}", JsonConvert.SerializeObject(disciplines));
+            return disciplines;
+        }
+        catch (Exception ex)
+        {
+            _logger.LogError(ex, "Ошибка при чтении объектов");
+            throw;
+        }
    }
 }
--- a/ProjectSchedule/ProjectSchedule/Repositories/Implementations/GroupRepository.cs
+++ b/ProjectSchedule/ProjectSchedule/Repositories/Implementations/GroupRepository.cs
@ -1,24 +1,120 @@
-using ProjectSchedule.Entities;
+using Dapper;
+using Microsoft.Extensions.Logging;
+using Newtonsoft.Json;
+using Npgsql;
+using ProjectSchedule.Entities;

 namespace ProjectSchedule.Repositories.Implementations;

 public class GroupRepository : IGroupRepository
 {
+    private readonly IConnectionString _connectionString;
+
+    private readonly ILogger<GroupRepository> _logger;
+
+    public GroupRepository(IConnectionString connectionString, ILogger<GroupRepository> logger)
+    {
+        _connectionString = connectionString;
+        _logger = logger;
+    }
+
    public void CreateGroup(Group group)
    {
-    }
-    public void DeleteGroup(int id)
+        _logger.LogInformation("Добавление объекта");
+        _logger.LogDebug("Объект: {json}", JsonConvert.SerializeObject(group));
+        try
        {
+            using var connection = new NpgsqlConnection(_connectionString.ConnectionString);
+            var queryInsert = @"
+                INSERT INTO Groups (Name, GroupNumber, StudentsCount)
+                VALUES (@Name, @GroupNumber, @StudentsCount)";
+            connection.Execute(queryInsert, group);
        }
-    public Group ReadGroupById(int id)
+        catch (Exception ex)
        {
-        return Group.CreateEntity(0, string.Empty, string.Empty, 0);
+            _logger.LogError(ex, "Ошибка при добавлении объекта");
+            throw;
        }
-    public IEnumerable<Group> ReadGroups()
-    {
-        return [];
    }
+
    public void UpdateGroup(Group group)
    {
+        _logger.LogInformation("Редактирование объекта");
+        _logger.LogDebug("Объект: {json}", JsonConvert.SerializeObject(group));
+        try
+        {
+            using var connection = new NpgsqlConnection(_connectionString.ConnectionString);
+            var queryUpdate = @"
+                UPDATE Groups
+                SET
+                    Name=@Name,
+                    GroupNumber=@GroupNumber,
+                    StudentsCount=@StudentsCount
+                WHERE Id=@Id";
+            connection.Execute(queryUpdate, group);
+        }
+        catch (Exception ex)
+        {
+            _logger.LogError(ex, "Ошибка при редактировании объекта");
+            throw;
+        }
+    }
+
+    public void DeleteGroup(int id)
+    {
+        _logger.LogInformation("Удаление объекта");
+        _logger.LogDebug("Объект: {id}", id);
+        try
+        {
+            using var connection = new NpgsqlConnection(_connectionString.ConnectionString);
+            var queryDelete = @"
+                DELETE FROM Groups
+                WHERE Id=@id";
+            connection.Execute(queryDelete, new { id });
+        }
+        catch (Exception ex)
+        {
+            _logger.LogError(ex, "Ошибка при удалении объекта");
+            throw;
+        }
+    }
+
+    public Group ReadGroupById(int id)
+    {
+        _logger.LogInformation("Получение объекта по идентификатору");
+        _logger.LogDebug("Объект: {id}", id);
+        try
+        {
+            using var connection = new NpgsqlConnection(_connectionString.ConnectionString);
+            var querySelect = @"
+                SELECT * FROM Groups
+                WHERE Id=@id";
+            var group = connection.QueryFirst<Group>(querySelect, new { id });
+            _logger.LogDebug("Найденный объект: {json}", JsonConvert.SerializeObject(group));
+            return group;
+        }
+        catch (Exception ex)
+        {
+            _logger.LogError(ex, "Ошибка при поиске объекта");
+            throw;
+        }
+    }
+
+    public IEnumerable<Group> ReadGroups()
+    {
+        _logger.LogInformation("Получение всех объектов");
+        try
+        {
+            using var connection = new NpgsqlConnection(_connectionString.ConnectionString);
+            var querySelect = "SELECT * FROM Groups";
+            var groups = connection.Query<Group>(querySelect);
+            _logger.LogDebug("Полученные объекты: {json}", JsonConvert.SerializeObject(groups));
+            return groups;
+        }
+        catch (Exception ex)
+        {
+            _logger.LogError(ex, "Ошибка при чтении объектов");
+            throw;
+        }
    }
 }
--- a/ProjectSchedule/ProjectSchedule/Repositories/Implementations/ScheduleRepository.cs
+++ b/ProjectSchedule/ProjectSchedule/Repositories/Implementations/ScheduleRepository.cs
@ -1,16 +1,60 @@
-using ProjectSchedule.Entities;
+using Dapper;
+using Microsoft.Extensions.Logging;
+using Newtonsoft.Json;
+using Npgsql;
+using ProjectSchedule.Entities;

 namespace ProjectSchedule.Repositories.Implementations;

 public class ScheduleRepository : IScheduleRepository
 {
+    private readonly IConnectionString _connectionString;
+
+    private readonly ILogger<ScheduleRepository> _logger;
+
+    public ScheduleRepository(IConnectionString connectionString, ILogger<ScheduleRepository> logger)
+    {
+        _connectionString = connectionString;
+        _logger = logger;
+    }
+
    public void CreateSchedule(Schedule schedule)
    {
+        _logger.LogInformation("Добавление объекта");
+        _logger.LogDebug("Объект: {json}", JsonConvert.SerializeObject(schedule));
+        try
+        {
+            using var connection = new NpgsqlConnection(_connectionString.ConnectionString);
+            var queryInsert = @"
+                INSERT INTO Schedule (TeacherId, DisciplineId, GroupStudentsId, AudienceId, DateDay,
+TypeWeek, NumberDay, NumberPair, TypePair)
+                VALUES (@TeacherId, @DisciplineId, @GroupStudentsId, @AudienceId, @DateDay,
+@TypeWeek, @NumberDay, @NumberPair, @TypePair)";
+            connection.Execute(queryInsert, schedule);
+        }
+        catch (Exception ex)
+        {
+            _logger.LogError(ex, "Ошибка при добавлении объекта");
+            throw;
+        }
    }

    public IEnumerable<Schedule> ReadSchedules(DateTime? dateForm = null, DateTime? dateTo = null,
        int? teacherId = null, int? disciplineId = null, int? groupStudentsId = null, int? audienceId = null)
    {
-        return [];
+        _logger.LogInformation("Получение всех объектов");
+        try
+        {
+            using var connection = new NpgsqlConnection(_connectionString.ConnectionString);
+            var querySelect = "SELECT * FROM Schedule";
+            var schedules = connection.Query<Schedule>(querySelect);
+            _logger.LogDebug("Полученные объекты: {json}", JsonConvert.SerializeObject(schedules));
+            return schedules;
+        }
+        catch (Exception ex)
+        {
+            _logger.LogError(ex, "Ошибка при чтении объектов");
+            throw;
+        }
    }
 }
--- a/ProjectSchedule/ProjectSchedule/Repositories/Implementations/StudingPlanSupplementRepository.cs
+++ b/ProjectSchedule/ProjectSchedule/Repositories/Implementations/StudingPlanSupplementRepository.cs
@ -1,18 +1,90 @@
-using ProjectSchedule.Entities;
+using Dapper;
+using Microsoft.Extensions.Logging;
+using Newtonsoft.Json;
+using Npgsql;
+using ProjectSchedule.Entities;

 namespace ProjectSchedule.Repositories.Implementations;

 public class StudingPlanSupplementRepository : IStudingPlanSupplementRepository
 {
+    private readonly IConnectionString _connectionString;
+
+    private readonly ILogger<StudingPlanSupplementRepository> _logger;
+
+    public StudingPlanSupplementRepository(IConnectionString connectionString, ILogger<StudingPlanSupplementRepository> logger)
+    {
+        _connectionString = connectionString;
+        _logger = logger;
+    }
+
    public void CreateStudingPlanSupplement(StudingPlanSupplement studingPlanSupplement)
    {
+        _logger.LogInformation("Добавление объекта");
+        _logger.LogDebug("Объект: {json}", JsonConvert.SerializeObject(studingPlanSupplement));
+        try
+        {
+            using var connection = new NpgsqlConnection(_connectionString.ConnectionString);
+            connection.Open();
+            using var transaction = connection.BeginTransaction();
+            var queryInsert = @"
+                INSERT INTO StudingPlanSupplement (GroupId, NameStudingPlan, Semester, DateApprovePlan)
+                VALUES (@GroupId, @NameStudingPlan, @Semester, @DateApprovePlan);
+                SELECT MAX(Id) FROM StudingPlanSupplement";
+            var studingPlanSupplementId = connection.QueryFirst<int>(queryInsert, studingPlanSupplement, transaction);
+
+            var querySubInsert = @"
+                INSERT INTO Discipline_StudingPlanSupplement (StudingPlanSupplementId, DisciplineId, LecturesCount, PracticesCount)
+                VALUES (@StudingPlanSupplementId, @DisciplineId, @LecturesCount, @PracticesCount)";
+            foreach (var elem in studingPlanSupplement.DisciplineStudingPlanSupplements)
+            {
+                connection.Execute(querySubInsert, new { studingPlanSupplementId, elem.DisciplineId, elem.LecturesCount, elem.PracticesCount }, transaction);
            }
+
+            transaction.Commit();
+        }
+        catch (Exception ex)
+        {
+            _logger.LogError(ex, "Ошибка при добавлении объекта");
+            throw;
+        }
+    }
+
    public void DeleteStudingPlanSupplement(int id)
    {
+        _logger.LogInformation("Удаление объекта");
+        _logger.LogDebug("Объект: {id}", id);
+        try
+        {
+            using var connection = new NpgsqlConnection(_connectionString.ConnectionString);
+            var queryDelete = @"
+                DELETE FROM StudingPlanSupplement
+                WHERE Id=@id";
+            connection.Execute(queryDelete, new { id });
        }
+        catch (Exception ex)
+        {
+            _logger.LogError(ex, "Ошибка при удалении объекта");
+            throw;
+        }
+    }
+
    public IEnumerable<StudingPlanSupplement> ReadStudingPlanSupplements(DateTime? dateForm = null, DateTime? dateTo = null,
        int? disciplineId = null, int? groupStudentsId = null)
    {
-        return [];
+        _logger.LogInformation("Получение всех объектов");
+        try
+        {
+            using var connection = new NpgsqlConnection(_connectionString.ConnectionString);
+            var querySelect = "SELECT * FROM StudingPlanSupplement";
+            var studingPlanSupplements = connection.Query<StudingPlanSupplement>(querySelect);
+            _logger.LogDebug("Полученные объекты: {json}", JsonConvert.SerializeObject(studingPlanSupplements));
+            return studingPlanSupplements;
+        }
+        catch (Exception ex)
+        {
+            _logger.LogError(ex, "Ошибка при чтении объектов");
+            throw;
+        }
    }
 }
--- a/ProjectSchedule/ProjectSchedule/Repositories/Implementations/TeacherRepository.cs
+++ b/ProjectSchedule/ProjectSchedule/Repositories/Implementations/TeacherRepository.cs
@ -1,24 +1,120 @@
-using ProjectSchedule.Entities;
+using Dapper;
+using Microsoft.Extensions.Logging;
+using Newtonsoft.Json;
+using Npgsql;
+using ProjectSchedule.Entities;

 namespace ProjectSchedule.Repositories.Implementations;

 public class TeacherRepository : ITeacherRepository
 {
+    private readonly IConnectionString _connectionString;
+
+    private readonly ILogger<TeacherRepository> _logger;
+
+    public TeacherRepository(IConnectionString connectionString, ILogger<TeacherRepository> logger)
+    {
+        _connectionString = connectionString;
+        _logger = logger;
+    }
+
    public void CreateTeacher(Teacher teacher)
    {
-    }
-    public void DeleteTeacher(int id)
+        _logger.LogInformation("Добавление объекта");
+        _logger.LogDebug("Объект: {json}", JsonConvert.SerializeObject(teacher));
+        try
        {
+            using var connection = new NpgsqlConnection(_connectionString.ConnectionString);
+            var queryInsert = @"
+                INSERT INTO Teacher (Surname, Name, Patronymic)
+                VALUES (@Surname, @Name, @Patronymic)";
+            connection.Execute(queryInsert, teacher);
        }
-    public Teacher ReadTeacherById(int id)
+        catch (Exception ex)
        {
-        return Teacher.CreateEntity(0, string.Empty, string.Empty, string.Empty);
+            _logger.LogError(ex, "Ошибка при добавлении объекта");
+            throw;
        }
-    public IEnumerable<Teacher> ReadTeachers()
-    {
-        return [];
    }
+
    public void UpdateTeacher(Teacher teacher)
    {
+        _logger.LogInformation("Редактирование объекта");
+        _logger.LogDebug("Объект: {json}", JsonConvert.SerializeObject(teacher));
+        try
+        {
+            using var connection = new NpgsqlConnection(_connectionString.ConnectionString);
+            var queryUpdate = @"
+                UPDATE Teacher
+                SET
+                    Surname=@Surname,
+                    Name=@Name,
+                    Patronymic=@Patronymic
+                WHERE Id=@Id";
+            connection.Execute(queryUpdate, teacher);
+        }
+        catch (Exception ex)
+        {
+            _logger.LogError(ex, "Ошибка при редактировании объекта");
+            throw;
+        }
+    }
+
+    public void DeleteTeacher(int id)
+    {
+        _logger.LogInformation("Удаление объекта");
+        _logger.LogDebug("Объект: {id}", id);
+        try
+        {
+            using var connection = new NpgsqlConnection(_connectionString.ConnectionString);
+            var queryDelete = @"
+                DELETE FROM Teacher
+                WHERE Id=@id";
+            connection.Execute(queryDelete, new { id });
+        }
+        catch (Exception ex)
+        {
+            _logger.LogError(ex, "Ошибка при удалении объекта");
+            throw;
+        }
+    }
+
+    public Teacher ReadTeacherById(int id)
+    {
+        _logger.LogInformation("Получение объекта по идентификатору");
+        _logger.LogDebug("Объект: {id}", id);
+        try
+        {
+            using var connection = new NpgsqlConnection(_connectionString.ConnectionString);
+            var querySelect = @"
+                SELECT * FROM Teacher
+                WHERE Id=@id";
+            var teacher = connection.QueryFirst<Teacher>(querySelect, new { id });
+            _logger.LogDebug("Найденный объект: {json}", JsonConvert.SerializeObject(teacher));
+            return teacher;
+        }
+        catch (Exception ex)
+        {
+            _logger.LogError(ex, "Ошибка при поиске объекта");
+            throw;
+        }
+    }
+
+    public IEnumerable<Teacher> ReadTeachers()
+    {
+        _logger.LogInformation("Получение всех объектов");
+        try
+        {
+            using var connection = new NpgsqlConnection(_connectionString.ConnectionString);
+            var querySelect = "SELECT * FROM Teacher";
+            var teachers = connection.Query<Teacher>(querySelect);
+            _logger.LogDebug("Полученные объекты: {json}", JsonConvert.SerializeObject(teachers));
+            return teachers;
+        }
+        catch (Exception ex)
+        {
+            _logger.LogError(ex, "Ошибка при чтении объектов");
+            throw;
+        }
    }
 }
--- a/ProjectSchedule/ProjectSchedule/appsettings.json
+++ b/ProjectSchedule/ProjectSchedule/appsettings.json
@ -0,0 +1,15 @@
+{
+  "Serilog": {
+    "Using": [ "Serilog.Sinks.File" ],
+    "MinimumLevel": "Debug",
+    "WriteTo": [
+      {
+        "Name": "File",
+        "Args": {
+          "path": "Logs/schedule_log.txt",
+          "rollingInterval": "Day"
+        }
+      }
+    ]
+  }
+}