var fdp_g = -1;
var fdp_limit = -1;

var saved_fdp = 0;
var justrestored = false;


function calculer(prix,qte,id,frais,sens)
{
	if(document.getElementById('nblignes').value > 0)
	{
		var chaine;
		chaine = "calculer=1&time=" + (new Date()).getTime();	
		if(window.XMLHttpRequest) ajax = new XMLHttpRequest(); else if(window.ActiveXObject) ajax = new ActiveXObject("Microsoft.XMLHTTP"); 
		ajax.open("POST", "http://www.bois-constructions.com/boutique/fonctions/gerer_panier.php", true);
		ajax.setRequestHeader("Content-Type", "application/x-www-form-urlencoded"); 
		ajax.send(chaine);	
	
		ajax.onreadystatechange= function()		
		{
			if (ajax.readyState == 4)
			{
				if (ajax.status == 200)
				{
					if(ajax.responseText != '-1' && ajax.responseText != '')
					{
						if(qte>0)
						{
							var total;
							total = prix*qte;
							total = total.toFixed(2);
							document.getElementById('total'+id).innerHTML = total+' €';
						}
					
                    	var total = parseFloat(ajax.responseText);
						total = total.toFixed(2);
					
						var totalfrais;
						totalfrais = document.getElementById('frais_port').innerHTML;

                        if(totalfrais == "0.00 €")
                        {
							if(total-saved_fdp < fdp_limit)
                            {
                            	totalfrais = saved_fdp;
                                saved_fdp = 0;
                                justrestored = true;
                            }
                        }
                        
						totalfrais = parseFloat(totalfrais);

						if(total-totalfrais < fdp_limit)
                        {
                        	if(!justrestored)
                            {
                                if(qte == 0 || sens == 0)
                                {
                                    totalfrais = totalfrais-frais;
                                }
        
                                if(sens == 1)
                                {
                                    totalfrais = totalfrais+frais;
                                }
							}
                            else
                            {
                            	justrestored = false;
                            }
						}
                        else
                        {
                        	if(saved_fdp == 0) saved_fdp = totalfrais;
                        	totalfrais = 0;
                        }
                        	
						totalfrais = totalfrais.toFixed(2);
						document.getElementById('frais_port').innerHTML = totalfrais+' &euro;';						
						
						
						document.getElementById('total').innerHTML = ''+total+' &euro;';
					}
				}
			}
		}	
	}
}



function panier(id,retour,sens,prix,frais)
{
	if(id != '' && id != -1 && id != 0)
	{
	

		if(sens == 1)
		{
			nb_prod_menu ++;
		}
		else
		{
			nb_prod_menu --;
		}

		document.getElementById('nb_prod_menu').innerHTML = ""+nb_prod_menu;

		var chaine;
		chaine = "id="+id+"&retour="+retour+"&prix="+prix+"&sens="+sens+"&time=" + (new Date()).getTime();	

		if(window.XMLHttpRequest) ajax = new XMLHttpRequest(); else if(window.ActiveXObject) ajax = new ActiveXObject("Microsoft.XMLHTTP"); 
		ajax.open("POST", "http://www.bois-constructions.com/boutique/fonctions/gerer_panier.php", true);
		ajax.setRequestHeader("Content-Type", "application/x-www-form-urlencoded"); 
		ajax.send(chaine);	

		ajax.onreadystatechange= function()		
		{
			if (ajax.readyState == 4)
			{
				if (ajax.status == 200)
				{
					if(ajax.responseText != '-1' && ajax.responseText != '')
					{
						if(ajax.responseText==0)
						{
							if(confirm('Etes-vous sûr(e) de vouloir supprimer ce produit ?'))
							{
								document.getElementById('ligne'+id).parentNode.removeChild(document.getElementById('ligne'+id))
								document.getElementById('nblignes').value = document.getElementById('nblignes').value-1;
								calculer(prix,ajax.responseText,id,frais,sens);
								if(document.getElementById('nblignes').value == 0)
								{
									document.getElementById('ligne_frais').parentNode.removeChild(document.getElementById('ligne_frais'));
									document.getElementById('ligne_total').parentNode.removeChild(document.getElementById('ligne_total'));
									document.getElementById('bouton_commander').parentNode.removeChild(document.getElementById('bouton_commander'));									

									var newRow = document.getElementById('monpanier').insertRow(1);
									var newCell = newRow.insertCell(0);
									newCell.setAttribute("align","center");
									newCell.setAttribute("colSpan","6");
									newCell.innerHTML = '<span class="tek_texte_gris">Aucun produit dans votre panier.</span>';
								}
								return '';
							}
							else
							{                                
								panier(id,retour,1,prix,frais);
								return '';
							}
						}
						
						document.getElementById(id).innerHTML = ajax.responseText;
	
						if(prix!=0)
						{
							calculer(prix,ajax.responseText,id,frais,sens);
						}
					}
				}
			}
		}	
	}
}