Ext.define('PVE.grid.ResourceGrid', {
    extend: 'Ext.grid.GridPanel',
    alias: ['widget.pveResourceGrid'],

    border: false,
    defaultSorter: {
	property: 'type',
	direction: 'ASC',
    },
    initComponent: function() {
	let me = this;

	let rstore = PVE.data.ResourceStore;

	let store = Ext.create('Ext.data.Store', {
	    model: 'PVEResources',
	    sorters: me.defaultSorter,
	    proxy: {
		type: 'memory',
	    },
	});

	let textfilter = '';
	let textfilterMatch = function(item) {
	    for (const field of ['name', 'storage', 'node', 'type', 'text']) {
		let v = item.data[field];
		if (v && v.toLowerCase().indexOf(textfilter) >= 0) {
		    return true;
		}
	    }
	    return false;
	};

	let updateGrid = function() {
	    var filterfn = me.viewFilter ? me.viewFilter.filterfn : null;

	    store.suspendEvents();

	    let nodeidx = {};
	    let gather_child_nodes;
	    gather_child_nodes = function(node) {
		if (!node || !node.childNodes) {
		    return;
		}
		for (let child of node.childNodes) {
		    let orgNode = rstore.data.get(child.data.id);
		    if (orgNode) {
			if ((!filterfn || filterfn(child)) && (!textfilter || textfilterMatch(child))) {
			    nodeidx[child.data.id] = orgNode;
			}
		    }
		    gather_child_nodes(child);
		}
	    };
	    gather_child_nodes(me.pveSelNode);

	    // remove vanished items
	    let rmlist = [];
	    store.each(olditem => {
		if (!nodeidx[olditem.data.id]) {
		    rmlist.push(olditem);
		}
	    });
	    if (rmlist.length) {
		store.remove(rmlist);
	    }

	    // add new items
	    let addlist = [];
	    for (const [_key, item] of Object.entries(nodeidx)) {
		// getById() use find(), which is slow (ExtJS4 DP5)
		let olditem = store.data.get(item.data.id);
		if (!olditem) {
		    addlist.push(item);
		    continue;
		}
		let changes = false;
		for (let field of PVE.data.ResourceStore.fieldNames) {
		    if (field !== 'id' && item.data[field] !== olditem.data[field]) {
			changes = true;
			olditem.beginEdit();
			olditem.set(field, item.data[field]);
		    }
		}
		if (changes) {
		    olditem.endEdit(true);
		    olditem.commit(true);
		}
	    }
	    if (addlist.length) {
		store.add(addlist);
	    }
	    store.sort();
	    store.resumeEvents();
	    store.fireEvent('refresh', store);
	};

	Ext.apply(me, {
	    store: store,
	    stateful: true,
	    stateId: 'grid-resource',
	    tbar: [
		'->',
		gettext('Search') + ':', ' ',
		{
		    xtype: 'textfield',
		    width: 200,
		    value: textfilter,
		    enableKeyEvents: true,
		    listeners: {
			buffer: 500,
			keyup: function(field, e) {
			    textfilter = field.getValue().toLowerCase();
			    updateGrid();
			},
		    },
		},
	    ],
	    viewConfig: {
		stripeRows: true,
            },
	    listeners: {
		itemcontextmenu: PVE.Utils.createCmdMenu,
		itemdblclick: function(v, record) {
		    var ws = me.up('pveStdWorkspace');
		    ws.selectById(record.data.id);
		},
		destroy: function() {
		    rstore.un("load", () => updateGrid());
		},
	    },
            columns: rstore.defaultColumns(),
	});
	me.callParent();
	updateGrid();
	rstore.on("load", () => updateGrid());
    },
});