Ext.define('PVE.form.VMCPUFlagSelector', {
    extend: 'Ext.grid.Panel',
    alias: 'widget.vmcpuflagselector',

    mixins: {
	field: 'Ext.form.field.Field',
    },

    disableSelection: true,
    columnLines: false,
    selectable: false,
    hideHeaders: true,

    scrollable: 'y',
    height: 200,

    unkownFlags: [],

    store: {
	type: 'store',
	fields: ['flag', { name: 'state', defaultValue: '=' }, 'desc'],
	data: [
	    // FIXME: let qemu-server host this and autogenerate or get from API call??
	    { flag: 'md-clear', desc: 'Required to let the guest OS know if MDS is mitigated correctly' },
	    { flag: 'pcid', desc: 'Meltdown fix cost reduction on Westmere, Sandy-, and IvyBridge Intel CPUs' },
	    { flag: 'spec-ctrl', desc: 'Allows improved Spectre mitigation with Intel CPUs' },
	    { flag: 'ssbd', desc: 'Protection for "Speculative Store Bypass" for Intel models' },
	    { flag: 'ibpb', desc: 'Allows improved Spectre mitigation with AMD CPUs' },
	    { flag: 'virt-ssbd', desc: 'Basis for "Speculative Store Bypass" protection for AMD models' },
	    { flag: 'amd-ssbd', desc: 'Improves Spectre mitigation performance with AMD CPUs, best used with "virt-ssbd"' },
	    { flag: 'amd-no-ssb', desc: 'Notifies guest OS that host is not vulnerable for Spectre on AMD CPUs' },
	    { flag: 'pdpe1gb', desc: 'Allow guest OS to use 1GB size pages, if host HW supports it' },
	    { flag: 'hv-tlbflush', desc: 'Improve performance in overcommitted Windows guests. May lead to guest bluescreens on old CPUs.' },
	    { flag: 'hv-evmcs', desc: 'Improve performance for nested virtualization. Only supported on Intel CPUs.' },
	    { flag: 'aes', desc: 'Activate AES instruction set for HW acceleration.' },
	],
	listeners: {
	    update: function() {
		this.commitChanges();
	    },
	},
    },

    getValue: function() {
	var me = this;
	var store = me.getStore();
	var flags = '';

	// ExtJS does not has a nice getAllRecords interface for stores :/
	store.queryBy(Ext.returnTrue).each(function(rec) {
	    var s = rec.get('state');
	    if (s && s !== '=') {
		var f = rec.get('flag');
		if (flags === '') {
		    flags = s + f;
		} else {
		    flags += ';' + s + f;
		}
	    }
	});

	flags += me.unkownFlags.join(';');

	return flags;
    },

    setValue: function(value) {
	var me = this;
	var store = me.getStore();

	me.value = value || '';

	me.unkownFlags = [];

	me.getStore().queryBy(Ext.returnTrue).each(function(rec) {
	    rec.set('state', '=');
	});

	var flags = value ? value.split(';') : [];
	flags.forEach(function(flag) {
	    var sign = flag.substr(0, 1);
	    flag = flag.substr(1);

	    var rec = store.findRecord('flag', flag, 0, false, true, true);
	    if (rec !== null) {
		rec.set('state', sign);
	    } else {
		me.unkownFlags.push(flag);
	    }
	});
	store.reload();

	var res = me.mixins.field.setValue.call(me, value);

	return res;
    },
    columns: [
	{
	    dataIndex: 'state',
	    renderer: function(v) {
		switch (v) {
		    case '=': return 'Default';
		    case '-': return 'Off';
		    case '+': return 'On';
		    default: return 'Unknown';
		}
	    },
	    width: 65,
	},
	{
	    xtype: 'widgetcolumn',
	    dataIndex: 'state',
	    width: 95,
	    onWidgetAttach: function(column, widget, record) {
		var val = record.get('state') || '=';
		widget.down('[inputValue=' + val + ']').setValue(true);
		// TODO: disable if selected CPU model and flag are incompatible
	    },
	    widget: {
		xtype: 'radiogroup',
		hideLabel: true,
		layout: 'hbox',
		validateOnChange: false,
		value: '=',
		listeners: {
		    change: function(f, value) {
			var v = Object.values(value)[0];
			f.getWidgetRecord().set('state', v);

			var view = this.up('grid');
			view.dirty = view.getValue() !== view.originalValue;
			view.checkDirty();
			//view.checkChange();
		    },
		},
		items: [
		    {
			boxLabel: '-',
			boxLabelAlign: 'before',
			inputValue: '-',
			isFormField: false,
		    },
		    {
			checked: true,
			inputValue: '=',
			isFormField: false,
		    },
		    {
			boxLabel: '+',
			inputValue: '+',
			isFormField: false,
		    },
		],
	    },
	},
	{
	    dataIndex: 'flag',
	    width: 100,
	},
	{
	    dataIndex: 'desc',
	    cellWrap: true,
	    flex: 1,
	},
    ],

    initComponent: function() {
	var me = this;

	// static class store, thus gets not recreated, so ensure defaults are set!
	me.getStore().data.forEach(function(v) {
	    v.state = '=';
	});

	me.value = me.originalValue = '';

	me.callParent(arguments);
    },
});