nestjs-custom-class-validators/lib/decorators/media.decorator.js

This package contains a few custom validator I have found to be repetitive, So I made templates that handles both class-validator checks and Swagger configuration

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.CustomMediaValidator = void 0;
const class_validator_1 = require("class-validator");
const nestjs_form_data_1 = require("nestjs-form-data");
const commonDecoratorFunctions_1 = require("../utils/commonDecoratorFunctions");
const common_1 = require("@nestjs/common");
function CustomMediaValidator(details) {
    const { maxSizeInByte, mimetypes, isArray, optional, defaultValue, description, } = details;
    const mySwaggerProp = (0, commonDecoratorFunctions_1.swaggerProp)({
        optional,
        description,
        defaultValue,
        isArray,
        format: "binary",
        type: "media",
    });
    return function (target, key) {
        if (optional) {
            (0, class_validator_1.IsOptional)()(target, key);
        }
        if (mimetypes.length == 0) {
            throw new common_1.UnprocessableEntityException(`${key}: Please provide at least one mimetype`);
        }
        (0, nestjs_form_data_1.IsFile)(Object.assign(Object.assign({}, (isArray && { each: true })), { message: `${key}: Must be a file` }))(target, key);
        (0, commonDecoratorFunctions_1.notEmptyFn)(key, isArray)(target, key);
        (0, nestjs_form_data_1.MaxFileSize)(maxSizeInByte, Object.assign(Object.assign({}, (isArray && { each: true })), { message: `${key}: cannot exceed ${(maxSizeInByte) / 1e6} megabytes` }))(target, key);
        (0, nestjs_form_data_1.HasMimeType)(mimetypes, Object.assign(Object.assign({}, (isArray && { each: true })), { message: `${key}: must have mimetype ${mimetypes.join(" or ")}` }))(target, key);
        mySwaggerProp(target, key);
    };
}
exports.CustomMediaValidator = CustomMediaValidator;
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