@ivandt/json-rules/dist/builder/builder.js

Rule parsing engine for JSON rules

"use strict";
var __classPrivateFieldSet = (this && this.__classPrivateFieldSet) || function (receiver, state, value, kind, f) {
    if (kind === "m") throw new TypeError("Private method is not writable");
    if (kind === "a" && !f) throw new TypeError("Private accessor was defined without a setter");
    if (typeof state === "function" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError("Cannot write private member to an object whose class did not declare it");
    return (kind === "a" ? f.call(receiver, value) : f ? f.value = value : state.set(receiver, value)), value;
};
var __classPrivateFieldGet = (this && this.__classPrivateFieldGet) || function (receiver, state, kind, f) {
    if (kind === "a" && !f) throw new TypeError("Private accessor was defined without a getter");
    if (typeof state === "function" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError("Cannot read private member from an object whose class did not declare it");
    return kind === "m" ? f : kind === "a" ? f.call(receiver) : f ? f.value : state.get(receiver);
};
var _Builder_instances, _Builder_rule, _Builder_validator, _Builder_addCondition;
Object.defineProperty(exports, "__esModule", { value: true });
exports.Builder = void 0;
const errors_1 = require("../errors");
class Builder {
    constructor(validator) {
        _Builder_instances.add(this);
        /** Stores the rule being constructed */
        _Builder_rule.set(this, { conditions: [] });
        /** Holds a reference to the Validator class */
        _Builder_validator.set(this, void 0);
        __classPrivateFieldSet(this, _Builder_validator, validator, "f");
    }
    /**
     * Adds an "all" condition with the given constraints
     * @param nodes The constraints of the condition
     */
    all(...nodes) {
        __classPrivateFieldGet(this, _Builder_instances, "m", _Builder_addCondition).call(this, "all", nodes);
        return this;
    }
    /**
     * Adds an "any" condition with the given constraints
     * @param nodes The constraints of the condition
     */
    any(...nodes) {
        __classPrivateFieldGet(this, _Builder_instances, "m", _Builder_addCondition).call(this, "any", nodes);
        return this;
    }
    /**
     * Adds a "none" condition with the given constraints
     * @param nodes The constraints of the condition
     */
    none(...nodes) {
        __classPrivateFieldGet(this, _Builder_instances, "m", _Builder_addCondition).call(this, "none", nodes);
        return this;
    }
    /**
     * Creates a constraint with the given field, operator and optional value
     * @param field The field to check
     * @param operator The operator to apply to the field
     * @param value The value to compare the field to (optional for some operators)
     */
    constraint(field, operator, value) {
        if (value === undefined) {
            return { field, operator };
        }
        return { field, operator, value };
    }
    /**
     * Sets the default value of the rule being constructed
     * @param value The default value of the rule
     */
    default(value) {
        __classPrivateFieldGet(this, _Builder_rule, "f").default = value;
        return this;
    }
    /**
     * Adds a node (in the root) to the rule being constructed
     * @param node The node to add to the rule
     */
    add(node) {
        __classPrivateFieldGet(this, _Builder_rule, "f").conditions.push(node);
        return this;
    }
    /**
     * Creates a new condition node
     * @param type The type of condition
     * @param nodes Any child nodes of the condition
     * @param result The result of the condition node (for granular rules)
     */
    condition(type, nodes, result) {
        return Object.assign({ [type]: nodes }, (result ? { result } : {}));
    }
    /**
     * Builds the rule being and returns it
     * @param validate Whether to validate the rule before returning it
     * @throws Error if validation is enabled and the rule is invalid
     */
    build(validate) {
        if (!validate)
            return __classPrivateFieldGet(this, _Builder_rule, "f");
        const validationResult = __classPrivateFieldGet(this, _Builder_validator, "f").validate(__classPrivateFieldGet(this, _Builder_rule, "f"));
        if (validationResult.isValid)
            return __classPrivateFieldGet(this, _Builder_rule, "f");
        throw new errors_1.RuleError(validationResult);
    }
}
exports.Builder = Builder;
_Builder_rule = new WeakMap(), _Builder_validator = new WeakMap(), _Builder_instances = new WeakSet(), _Builder_addCondition = function _Builder_addCondition(type, nodes) {
    const condition = { [type]: nodes };
    if (Array.isArray(__classPrivateFieldGet(this, _Builder_rule, "f").conditions)) {
        __classPrivateFieldGet(this, _Builder_rule, "f").conditions.push(condition);
    }
    else {
        __classPrivateFieldGet(this, _Builder_rule, "f").conditions = [__classPrivateFieldGet(this, _Builder_rule, "f").conditions, condition];
    }
};