woocommerce-paypal-payments/modules/ppcp-wc-gateway/resources/js/common/display-manager/Rule.js

import ConditionFactory from "./ConditionFactory";
import ActionFactory from "./ActionFactory";

class Rule {

    constructor(config, triggerUpdate) {
        this.config = config;
        this.conditions = {};
        this.actions = {};
        this.triggerUpdate = triggerUpdate;
        this.status = null;

        const updateStatus = this.updateStatus.bind(this);
        for (const conditionConfig of this.config.conditions) {
            const condition = ConditionFactory.make(conditionConfig, updateStatus);
            this.conditions[condition.key] = condition;

            console.log('Condition', condition);
        }

        for (const actionConfig of this.config.actions) {
            const action = ActionFactory.make(actionConfig);
            this.actions[action.key] = action;

            console.log('Action', action);
        }
    }

    get key() {
        return this.config.key;
    }

    updateStatus(forceRunActions = false) {
        let status = true;

        for (const [key, condition] of Object.entries(this.conditions)) {
            status &= condition.status;
        }

        if (status !== this.status) {
            this.status = status;
            this.triggerUpdate();
            this.runActions();
        } else if (forceRunActions) {
            this.runActions();
        }
    }

    runActions() {
        for (const [key, action] of Object.entries(this.actions)) {
            action.run(this.status);
        }
    }

    register() {
        for (const [key, condition] of Object.entries(this.conditions)) {
            condition.register(this.updateStatus.bind(this));
        }
        for (const [key, action] of Object.entries(this.actions)) {
            action.register();
        }

        this.updateStatus(true);
    }

}

export default Rule;