If.ts

/**
 * Copyright 2021 Olympe S.A.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
import { Brick, BrickContext, registerBrick } from 'olympe';
import { merge } from 'rxjs';
import { map } from 'rxjs/operators';

export default class If extends Brick {

    /**
     * @override
     */
    setupExecution(context: BrickContext) {
        const inputs = this.getInputs();
        return merge(...inputs.map((i) => context.observe(i))).pipe(
            map((value) => {
                return value === null ? null : inputs.map((i) => context.get(i));
            })
        );
    }

    /**
     * @override
     */
    update(context: BrickContext, [cond, a, b]: [boolean, any, any], [setResult]: [(param: any) => void]) {
        if (cond !== null) {
            setResult(cond ? a : b);
        }
    }
}

registerBrick('01633eaa139d1f5e2fc4', If);