express-ts-skeleton/lib/src/core/validator.js

This is a skeleton(boiler plate) for nodejs, express and typescript.

"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.validateHelper = void 0;
const joi_1 = __importDefault(require("joi"));
const pick_1 = require("../scripts/pick");
const response_1 = require("../scripts/response");
const response_2 = require("./response");
//MARK: validator
/**
 * Middleware to validate request parameters, query, and body based on a schema.
 * @param {RouteFormat["validate"]} schema - The validation schema.
 * @returns {function(Request, Response, NextFunction): void} Express middleware function to validate the request.
 */
class validateHelper extends response_1.responseHelper {
    constructor() {
        super(...arguments);
        this.valid = (schema) => {
            return (req, res, next) => {
                if (schema) {
                    const validSchema = (0, pick_1.pick)(schema, ["params", "query", "body"]);
                    const object = (0, pick_1.pick)(req, Object.keys(validSchema));
                    const { error, value } = joi_1.default.compile(validSchema)
                        .prefs({ errors: { label: "key" }, abortEarly: false })
                        .validate(object);
                    if (error) {
                        const formattedErrors = error.details.reduce((acc, { path, message }) => {
                            const context = path[0];
                            acc[context] = acc[context]
                                ? `${acc[context]}, ${message}`
                                : message;
                            return acc;
                        }, {});
                        const data = response_2.FailureResponse.failure({
                            validation: formattedErrors,
                            message: "Validation failed",
                            error: "Validation error",
                        });
                        return res.status(data.statusCode).json(data);
                    }
                    Object.assign(req, value);
                }
                return next();
            };
        };
    }
}
exports.validateHelper = validateHelper;