Invert direction for Smartwings shades

Inspired by ZHA's approach, and feedback form SmartWings support, I confirmed that this converter works and am now proposing that we merge it to the main codebase.

For shades to work well, you still need to invert their Zigbee state (press Up & Down together for 5s, then Press the P button under the battery cover once).

Author: Korri

src/devices/smartwings.ts

@@ -3,6 +3,18 @@ import tz from '../converters/toZigbee';
 import * as exposes from '../lib/exposes';
 import * as reporting from '../lib/reporting';
 import {DefinitionWithExtend} from '../lib/types';
+import {getOptions} from '../lib/utils';
+
+
+const backwards_cover_state = {
+    key: ['state'],
+    convertSet: async (entity, key, value, meta) => {
+        const lookup = {'open': 'downClose', 'close': 'upOpen', 'stop': 'stop', 'on': 'downClose', 'off': 'upOpen'};
+        utils.assertString(value, key);
+        value = value.toLowerCase();
+        await entity.command('closuresWindowCovering', lookup[value], {}, getOptions(meta.mapped, entity));
+    },
+};
 
 const e = exposes.presets;
 
@@ -13,7 +25,7 @@ const definitions: DefinitionWithExtend[] = [
         vendor: 'Smartwings',
         description: 'Roller shade',
         fromZigbee: [fz.cover_position_tilt, fz.battery],
-        toZigbee: [tz.cover_state, tz.cover_position_tilt],
+        toZigbee: [backwards_cover_state, tz.cover_position_tilt],
         meta: {battery: {dontDividePercentage: true}, coverInverted: true},
         configure: async (device, coordinatorEndpoint) => {
             const endpoint = device.getEndpoint(1);