@russ-b/nestjs-common-tools/dist/validators/unique/unique.constraint.js

NestJS utility tools

"use strict";
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;
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    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);
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.UniqueConstraint = void 0;
const class_validator_1 = require("class-validator");
const common_1 = require("@nestjs/common");
const uuid_1 = require("uuid");
const typeorm_1 = require("typeorm");
const unique_constant_1 = require("./unique.constant");
let UniqueConstraint = class UniqueConstraint {
    constructor(entityManager) {
        this.entityManager = entityManager;
    }
    async validate(value, validationArguments) {
        const [target, options = {}] = validationArguments.constraints;
        const { isUuid = false, each = false, property = 'id', } = options;
        if (isUuid) {
            if (!this.validateUuid(value)) {
                return false;
            }
        }
        if (each) {
            if (!Array.isArray(value)) {
                return false;
            }
            if (value.length === 0) {
                return true;
            }
            if (isUuid && !value.every((v) => this.validateUuid(v))) {
                return false;
            }
            const count = await this.entityManager
                .getRepository(target)
                .createQueryBuilder('entity')
                .where(`entity.${property} IN (:...values)`, { values: value })
                .getCount();
            return count === 0;
        }
        return !(await this.entityManager
            .getRepository(target)
            .createQueryBuilder('entity')
            .where({ [property]: value })
            .getExists());
    }
    defaultMessage(validationArguments) {
        const [entityType, options = {}] = validationArguments.constraints;
        const { each = false, property = 'id' } = options;
        const field = validationArguments.property;
        const value = validationArguments.value;
        const entityName = entityType.name;
        if (each) {
            return `All elements in "${field}" must be existing ${entityName} ${property}s`;
        }
        return `A ${entityName} with ${property} "${value}" does not exist`;
    }
    validateUuid(value) {
        return (0, uuid_1.validate)(value);
    }
};
exports.UniqueConstraint = UniqueConstraint;
exports.UniqueConstraint = UniqueConstraint = __decorate([
    (0, class_validator_1.ValidatorConstraint)({ name: unique_constant_1.IS_UNIQUE, async: true }),
    (0, common_1.Injectable)(),
    __metadata("design:paramtypes", [typeorm_1.EntityManager])
], UniqueConstraint);
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