Innovenergy_trunk/csharp/App/Backend/Database/Read.cs

using InnovEnergy.App.Backend.DataTypes;
using InnovEnergy.App.Backend.DataTypes.Methods;
using InnovEnergy.App.Backend.Relations;


namespace InnovEnergy.App.Backend.Database;


public static partial class Db 
{
    public static Folder? GetFolderById(Int64? id)
    {
        return Folders
              .FirstOrDefault(f => f.Id == id);
    }
        
    public static Installation? GetInstallationById(Int64? id)
    {
        return Installations
            .FirstOrDefault(i => i.Id == id);
    }
    
    public static User? GetUserById(Int64? id)
    {
        return Users
            .FirstOrDefault(u => u.Id == id);
    }
    
    public static User? GetUserByName(String userName)
    {
        return Users
            .FirstOrDefault(u => u.Name == userName);
    }

    public static Session? GetSession(String token)
    {
        var session = Sessions
                     .FirstOrDefault(s => s.Token == token);
        
        // cannot use session.Valid in the DB query above.
        // It does not exist in the db (IgnoreAttribute) 

        if (session is null)
            return null;

        if (!session.Valid)
        {
            Delete(session);
            return null;
        }

        return session;
    }
}