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

using InnovEnergy.App.Backend.DataTypes;
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);
    }
    
    // private!!
    private static Session? GetSessionById(Int64 id)
    {
        #pragma warning disable CS0618
  
        return Sessions
              .FirstOrDefault(u => u.Id == id);
        
        #pragma warning restore CS0618
    }
    
    
    public static User? GetUserByEmail(String email)
    {
        return Users
              .FirstOrDefault(u => u.Email == email);
    }

    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;
    }
    
    public static User? GetUserBySessionToken(String token)
    {
        var session = Sessions
                     .FirstOrDefault(s => s.Token == token);
        
        // cannot user session.Expired 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 GetUserById(session.UserId);
    }

}