pinclub/pinclub

var _ = require('lodash');
var validator = require('validator');
var expressValidator = require('express-validator');

/**
 * 自定义验证
 */
module.exports = function () {
    return expressValidator({
        errorFormatter: function (param, message, value) {
            return {
                param: param,
                message: message,
                value: value
            };
        },
        customValidators: {
            isString: function (value) { return _.isString(value); },
            isEmail: function (value) { return /^\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*$/.test(value); },
            isNumber: function (value) { return _.isNumber(value); },
            isObject: function (value) { return _.isObject(value); },
            isArray: function (value) { return _.isArray(value); },
            inArray: function (param) {
                var argumentsArray = [].slice.apply(arguments);
                var validatorName = argumentsArray[1];

                return _.every(param, function (item) {
                    var validatorOptions = _.tail(argumentsArray);
                    validatorOptions.unshift(item);

                    switch(validatorOptions[1]) {
                        case 'isString': return _.isString(item);
                        case 'isEmail': return /^\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*$/.test(item);
                        case 'isNumber': return _.isNumber(item);
                        case 'isObject': return _.isObject(item);
                        case 'isArray': return _.isArray(item);
                        case 'isBoolean':
                            switch (typeof item) {
                                case 'string': return item === 'true' || item === 'false';
                                case 'boolean': return item === true || item === false;
                                default: return false;
                            }
                            break;
                        default:
                            return validator[validatorName].apply(this, validatorOptions);
                    }
                });
            },
            isBoolean: function (value) {
                switch (typeof value) {
                    case 'string':
                        return value === 'true' || value === 'false';
                    case 'boolean':
                        return value === true || value === false;
                    default:
                        return false;
                }
            },
            custom: function (value, callback) {
                if (typeof value !== 'undefined') {
                    return callback(value);
                } else {
                    return false;
                }
            }
        }
    });
};