@eleven-am/nestjs-graphql-crud/createOneToOneResolver.js

nestjs-graphql-crud is a library that aims to reduce the boilerplate code needed to create a GraphQL CRUD API.

"use strict";
/**
 * @module createOneToOneResolver
 * @description Creates a resolver for one-to-one relationships
 */
var __decorate = (this && this.__decorate) || function (decorators, target, key, desc) {
    var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;
    if (typeof Reflect === "object" && typeof Reflect.decorate === "function") r = Reflect.decorate(decorators, target, key, desc);
    else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;
    return c > 3 && r && Object.defineProperty(target, key, r), r;
};
var __metadata = (this && this.__metadata) || function (k, v) {
    if (typeof Reflect === "object" && typeof Reflect.metadata === "function") return Reflect.metadata(k, v);
};
var __param = (this && this.__param) || function (paramIndex, decorator) {
    return function (target, key) { decorator(target, key, paramIndex); }
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.createOneToOneResolver = createOneToOneResolver;
const graphql_1 = require("@nestjs/graphql");
const decorators_1 = require("./decorators");
/**
 * Creates a resolver class for one-to-one relationships
 *
 * @template Item - The parent entity type
 * @template Target - The related entity type
 *
 * @param {string} modelName - The name of the model
 * @param {Type<Item>} item - The parent entity class
 * @param {Constructor<IGenericCrudService<Item, Target, never>>} ParentClass - The parent resolver class to extend
 * @param {OneToOneRelationResolverConfig<Item, Target>} config - Configuration for the one-to-one relationship
 * @returns {Constructor<IGenericCrudService<Item, Target, never>>} The extended resolver class
 */
function createOneToOneResolver(modelName, item, config, ParentClass) {
    var _a;
    const resolveMethodName = `resolve${(0, decorators_1.firstLetterUppercase)(config.fieldName)}`;
    let OneToOneResolver = class OneToOneResolver extends ParentClass {
        /**
         * Resolver method for a one-to-one relationship field
         *
         * @param {Item} item - The parent entity instance
         * @param {GraphQLResolveInfo} info - The GraphQL resolve info
         * @param {AppAbilityType} ability - The user's ability for authorization
         * @returns {Promise<Target | null>} The related entity or null
         */
        async [_a = resolveMethodName](item, info, ability) {
            const select = this.service.fieldSelectionProvider.parseSelection(info);
            const targetId = item[config.relationField];
            return this.service.resolveOneToOne(ability, config.targetModel, targetId, select);
        }
    };
    __decorate([
        (0, graphql_1.ResolveField)(config.fieldName, () => config.targetType, {
            nullable: config.nullable,
        }),
        __param(0, (0, graphql_1.Parent)()),
        __param(1, (0, graphql_1.Info)()),
        __param(2, decorators_1.CurrentAbility.HTTP()),
        __metadata("design:type", Function),
        __metadata("design:paramtypes", [Object, Object, Object]),
        __metadata("design:returntype", Promise)
    ], OneToOneResolver.prototype, _a, null);
    OneToOneResolver = __decorate([
        (0, graphql_1.Resolver)(() => item)
    ], OneToOneResolver);
    Object.defineProperty(OneToOneResolver, 'name', {
        value: `${(0, decorators_1.firstLetterUppercase)(modelName)}RelationsResolver`,
        writable: false,
    });
    return OneToOneResolver;
}
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