using System.Data.SqlClient;
using System.Text.Json;
using Dapper;
using Microsoft.Extensions.Logging;
using Npgsql;
using ProjectGSM.Entities;

namespace ProjectGSM.Repositories.Implementations;

public class CaseRepository : ICaseRepository
{
    private readonly IConnectionString _connectionString;
    private readonly ILogger<CaseRepository> _logger;

    public CaseRepository(IConnectionString connectionString,
        ILogger<CaseRepository> logger)
    {
        _connectionString = connectionString;
        _logger = logger;
    }

    public IEnumerable<Case> ReadCases()
    {
        _logger.LogInformation("Получение всех объектов");
        try
        {
            using var connection = new
                NpgsqlConnection(_connectionString.ConnectionString);
            var querySelect = "SELECT * FROM cases";
            var cases = connection.Query<Case>(querySelect);
            _logger.LogDebug("Полученные объекты: {json}",
                JsonSerializer.Serialize(cases));
            return cases;
        }
        catch (Exception ex)
        {
            _logger.LogError(ex, "Ошибка при чтении объектов");
            throw;
        }
    }

    public Case ReadCaseById(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 cases WHERE Id=@id";
            var caseE = connection.QueryFirst<Case>(querySelect, new { id });
            _logger.LogDebug("Найденный объект: {json}",
                JsonSerializer.Serialize(caseE));
            return caseE;
        }
        catch (Exception ex)
        {
            _logger.LogError(ex, "Ошибка при поиске объекта");
            throw;
        }
    }

    public void CreateCase(Case caseEntity)
    {
        _logger.LogInformation("Добавление объекта");
        _logger.LogDebug("Объект: {json}",
            JsonSerializer.Serialize(caseEntity));
        try
        {
            using var connection = new NpgsqlConnection(_connectionString.ConnectionString);
            connection.Open();
            using var transaction = connection.BeginTransaction();
            var queryInsert = @"INSERT INTO Cases (typeappeal, Payment, Price, victoryprice, Verdict, courtid, clientid, Description, createdat)
                VALUES (@TypeAppeal, @Payment, @Price, @VictoryPrice, @Verdict, @CourtId, @ClientId, @Description, @CreatedAt);
SELECT MAX(Id) FROM cases;";
            var caseId =
                connection.QueryFirst<int>(queryInsert, caseEntity, transaction);
            var querySubInsert = @"
                INSERT INTO case_advocates (caseid, advocateid, post, createdat)
                VALUES (@CaseId, @AdvocateId, @Post, @CreatedAt)";
            foreach (var elem in caseEntity.Advocates)
            {
                connection.Execute(querySubInsert, new {
                    caseId, elem.AdvocateId, elem.Post, elem.CreatedAt }, transaction);
            }
            transaction.Commit();
        }
        catch (Exception ex)
        {
            _logger.LogError(ex, "Ошибка при добавлении объекта");
            throw;
        }
    }

    public void DeleteCase(int id)
    {
        _logger.LogInformation("Удаление объекта");
        _logger.LogDebug("Объект: {id}", id);
        try
        {
            using var connection = new
                NpgsqlConnection(_connectionString.ConnectionString);
            var queryDelete = @"DELETE FROM cases WHERE id = @Id;";
            connection.Execute(queryDelete, new { Id = id });
        }
        catch (Exception ex)
        {
            _logger.LogError(ex, "Ошибка при удалении объекта");
            throw;
        }
    }
}