steady-api
Version:
Configurable REST API built with Express and TypeScript
83 lines • 2.87 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
const Joi = require("joi");
const types_1 = require("./types");
class Validator {
constructor(params, values) {
this.valid = true;
this.types = {};
this.defaultTypes = types_1.default;
this.customTypes = {};
this.params = params;
this.values = values;
this.applyDefaults();
}
addCustomTypes(types) {
this.customTypes = types;
this.types = Object.assign({}, this.defaultTypes, this.customTypes);
}
getValidTypes() {
return Object.keys(this.types);
}
isValid() {
return this.validate();
}
getErrors() {
return this.errors;
}
validate() {
const schema = {};
this.params.forEach(param => {
if (this.getValidTypes().indexOf(param.type) === -1) {
throw new Error(`Invalid parameter type '${param.type}' set for parameter: '${param.name}'`);
}
const type = this.types[param.type];
let validator = type.validator(param);
if (param.required === true) {
validator = validator.required();
}
schema[param.name] = validator;
});
// perform the validation
this.doValidation(this.values, schema);
return this.valid;
}
applyDefaults() {
this.params.forEach(param => {
if (typeof param.default === 'undefined')
return;
switch (param.type) {
case "number":
const nan = isNaN(parseFloat(this.values[param.name]));
const defaultIsNumber = (param.default && !isNaN(parseFloat(param.default)));
if (nan && defaultIsNumber) {
this.values[param.name] = parseFloat(param.default);
}
break;
default:
if (!this.values[param.name]) {
this.values[param.name] = param.default;
}
break;
}
if (!this.values[param.name] && this.values[param.name] !== 0 && param.default) {
this.values[param.name] = param.default;
}
});
}
doValidation(values, schema) {
return Joi.validate(values, schema, { abortEarly: false, convert: true }, (err, value) => {
if (err) {
this.valid = false;
this.errors = err.details.reduce((acc, detail) => {
acc.push(detail.message.replace(/\"/g, "'"));
return acc;
}, []);
return;
}
this.values = value;
});
}
}
exports.default = Validator;
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