@elsikora/nestjs-crud-automator/dist/esm/class/api/controller/generated/function-capability.class.js

A library for automating the creation of CRUD operations in NestJS.

import { ErrorException } from '../../../../utility/error/exception.utility.js';
import { ObjectFindPropertyDescriptor } from '../../../../utility/object-find-property-descriptor.utility.js';

/**
 * Tracks exact built-in decorated service function identities used by generated mandatory calls.
 */
class ApiControllerGeneratedFunctionCapability {
    static REGISTRY = new WeakMap();
    static mark(implementation, functionType, entity) {
        if (typeof implementation !== "function") {
            throw ErrorException(`Generated ${functionType} capability must mark a function`);
        }
        this.REGISTRY.set(implementation, { entity, functionType });
    }
    static markOwn(service, propertyKey, functionType, entity) {
        const descriptor = Object.getOwnPropertyDescriptor(service, propertyKey);
        if (!descriptor || !("value" in descriptor) || typeof descriptor.value !== "function") {
            throw ErrorException(`Generated ${functionType} service capability must be an own data function`);
        }
        this.mark(descriptor.value, functionType, entity);
    }
    // eslint-disable-next-line @elsikora/typescript/no-unnecessary-type-parameters
    static resolve(service, propertyKey, functionType, entity) {
        if (typeof entity !== "function") {
            throw ErrorException(`Generated ${functionType} entity capability must be a constructor`);
        }
        const entityConstructor = entity;
        const descriptor = ObjectFindPropertyDescriptor(service, propertyKey);
        if (!descriptor) {
            throw ErrorException(`Generated ${functionType} service function is not available`);
        }
        if (!("value" in descriptor) || typeof descriptor.value !== "function") {
            throw ErrorException(`Generated ${functionType} service capability must be a data function`);
        }
        const implementation = descriptor.value;
        const capability = this.REGISTRY.get(implementation);
        if (capability?.entity !== entityConstructor || capability.functionType !== functionType) {
            throw ErrorException(`Generated ${functionType} service function is not protected by its built-in decorator`);
        }
        return implementation;
    }
}

export { ApiControllerGeneratedFunctionCapability };
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