using InnovEnergy.App.Backend.Model;
using SQLite;

namespace InnovEnergy.App.Backend.Database;

public static partial class Db
{
 
    private static TableQuery<Installation> Installations => _Db.Table<Installation>();
    
    public static Int32 NbInstallations => Installations.Count();
    
    public static Installation? GetInstallationById(Int64 id) => Installations
                                                         .FirstOrDefault(u => u.Id == id);

    private static IEnumerable<Folder> Ancestors(Installation installation)
    {
        var parentFolder = GetParent(installation);

        return parentFolder is null 
             ? Enumerable.Empty<Folder>() 
             : Ancestors(parentFolder);
    }
    
    public static Folder? GetParent(Installation installation)
    {
        return IsRoot(installation)    
             ? null 
             : GetFolderById(installation.ParentId);
    }
    
    public static Boolean IsRoot(Installation i)
    { 
        return i.ParentId == 0; // root has ParentId 0 by definition
    }
    
    public static Int64 CreateInstallation(Installation installation)
    {
        return Create(installation);
    }
    
    public static Boolean UpdateInstallation(Installation installation)
    {
        return Update(installation);
    }

    public static Boolean DeleteInstallation(Installation installation)
    {
        User2Installation.Delete(i => i.InstallationId == installation.Id);

        return Delete(installation);
    }

}