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

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

"use strict";
/**
 * @module createOneToManyResolver
 * @description Creates a resolver for one-to-many 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.createOneToManyResolver = createOneToManyResolver;
const graphql_1 = require("@nestjs/graphql");
const decorators_1 = require("./decorators");
/**
 * Creates a resolver class for one-to-many relationships
 *
 * @template Item - The parent entity type
 * @template Target - The related entity type
 * @template WhereInput - The input type for query filters
 *
 * @param {string} modelName - The name of the Prisma model
 * @param {Type<Item>} item - The parent entity class
 * @param {Constructor<IGenericCrudService<Item, Target, WhereInput>>} ParentClass - The parent resolver class to extend
 * @param {OneToManyRelationResolverConfig<Target, WhereInput>} config - Configuration for the one-to-many relationship
 * @returns {Constructor<IGenericCrudService<Item, Target, WhereInput>>} The extended resolver class
 */
function createOneToManyResolver(modelName, item, config, ParentClass) {
    var _a, _b;
    const resolveMethodName = `resolve${(0, decorators_1.firstLetterUppercase)(config.fieldName)}`;
    if (config.targetWhereInput) {
        let OneToManyResolver = class OneToManyResolver extends ParentClass {
            /**
             * Resolver method for a one-to-many relationship field with filtering
             *
             * @param {Item} item - The parent entity instance
             * @param {GraphQLResolveInfo} info - The GraphQL resolve info
             * @param {AppAbilityType} ability - The user's ability for authorization
             * @param {FindManyContract<WhereInput>} where - Filter criteria
             * @returns {Promise<Target[]>} Array of related entities
             */
            async [_a = resolveMethodName](item, info, ability, where) {
                const select = this.service.fieldSelectionProvider.parseSelection(info);
                return this.service.resolveOneToMany(ability, config.targetModel, config.relationField, item.id, select, where);
            }
        };
        __decorate([
            (0, graphql_1.ResolveField)(config.fieldName, () => [config.targetType]),
            __param(0, (0, graphql_1.Parent)()),
            __param(1, (0, graphql_1.Info)()),
            __param(2, decorators_1.CurrentAbility.HTTP()),
            __param(3, (0, graphql_1.Args)('filter', {
                type: () => config.targetWhereInput,
                nullable: config.whereNullable
            })),
            __metadata("design:type", Function),
            __metadata("design:paramtypes", [Object, Object, Object, Object]),
            __metadata("design:returntype", Promise)
        ], OneToManyResolver.prototype, _a, null);
        OneToManyResolver = __decorate([
            (0, graphql_1.Resolver)(() => item)
        ], OneToManyResolver);
        Object.defineProperty(OneToManyResolver, 'name', {
            value: `${(0, decorators_1.firstLetterUppercase)(modelName)}RelationsResolver`,
            writable: false,
        });
        return OneToManyResolver;
    }
    else {
        let OneToManyResolver = class OneToManyResolver extends ParentClass {
            /**
             * Resolver method for a one-to-many relationship field without filtering
             *
             * @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[]>} Array of related entities
             */
            async [_b = resolveMethodName](item, info, ability) {
                const select = this.service.fieldSelectionProvider.parseSelection(info);
                return this.service.resolveOneToMany(ability, config.targetModel, config.relationField, item.id, select, undefined);
            }
        };
        __decorate([
            (0, graphql_1.ResolveField)(config.fieldName, () => [config.targetType]),
            __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)
        ], OneToManyResolver.prototype, _b, null);
        OneToManyResolver = __decorate([
            (0, graphql_1.Resolver)(() => item)
        ], OneToManyResolver);
        Object.defineProperty(OneToManyResolver, 'name', {
            value: `${(0, decorators_1.firstLetterUppercase)(modelName)}RelationsResolver`,
            writable: false,
        });
        return OneToManyResolver;
    }
}
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