using MySql.Data.MySqlClient;

namespace HikvisionAttendanceManager.App.Services;

public sealed class AttendanceMachineRepository
{
    public async Task<DateTime?> GetLastSyncDateAsync(string machineIp, CancellationToken cancellationToken)
    {
        await using var connection = HrmsConnectionFactory.CreateConnection();
        await connection.OpenAsync(cancellationToken);
        await using var command = new MySqlCommand(
            "SELECT last_sync_date FROM hrms.attendance_machine WHERE machine_ip=@machine_ip LIMIT 1", connection);
        command.Parameters.AddWithValue("@machine_ip", machineIp);
        var value = await command.ExecuteScalarAsync(cancellationToken);
        return value is null or DBNull ? null : Convert.ToDateTime(value);
    }

    public async Task UpdateLastSyncDateAsync(string machineIp, DateTime lastSyncDate, CancellationToken cancellationToken)
    {
        await using var connection = HrmsConnectionFactory.CreateConnection();
        await connection.OpenAsync(cancellationToken);
        await using var command = new MySqlCommand(
            "UPDATE hrms.attendance_machine SET last_sync_date=@last_sync_date WHERE machine_ip=@machine_ip", connection);
        command.Parameters.AddWithValue("@last_sync_date", lastSyncDate);
        command.Parameters.AddWithValue("@machine_ip", machineIp);
        await command.ExecuteNonQueryAsync(cancellationToken);
    }
}