215 lines
6.8 KiB
TypeScript
215 lines
6.8 KiB
TypeScript
// different version of lambert-server instanceOf with discord error format
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import { NextFunction, Request, Response } from "express";
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import { Tuple } from "lambert-server";
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import "missing-native-js-functions";
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export const OPTIONAL_PREFIX = "$";
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export const EMAIL_REGEX =
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/^(([^<>()\[\]\\.,;:\s@"]+(\.[^<>()\[\]\\.,;:\s@"]+)*)|(".+"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/;
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export function check(schema: any) {
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return (req: Request, res: Response, next: NextFunction) => {
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try {
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const result = instanceOf(schema, req.body, { path: "body", req, ref: { obj: null, key: "" } });
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if (result === true) return next();
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throw result;
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} catch (error) {
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return res.status(400).json({ code: 50035, message: "Invalid Form Body", success: false, errors: error });
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}
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};
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}
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export function FieldErrors(fields: Record<string, { code?: string; message: string }>) {
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return new FieldError(
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50035,
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"Invalid Form Body",
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fields.map(({ message, code }) => ({
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_errors: [
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{
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message,
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code: code || "BASE_TYPE_INVALID"
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}
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]
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}))
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);
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}
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// TODO: implement Image data type: Data URI scheme that supports JPG, GIF, and PNG formats. An example Data URI format is: data:image/jpeg;base64,BASE64_ENCODED_JPEG_IMAGE_DATA
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// Ensure you use the proper content type (image/jpeg, image/png, image/gif) that matches the image data being provided.
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export class FieldError extends Error {
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constructor(public code: string | number, public message: string, public errors?: any) {
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super(message);
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}
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}
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export class Email {
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constructor(public email: string) {}
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check() {
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return !!this.email.match(EMAIL_REGEX);
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}
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}
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export class Length {
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constructor(public type: any, public min: number, public max: number) {}
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check(value: string) {
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if (typeof value === "string" || Array.isArray(value)) return value.length >= this.min && value.length <= this.max;
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if (typeof value === "number" || typeof value === "bigint") return value >= this.min && value <= this.max;
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return false;
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}
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}
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export function instanceOf(
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type: any,
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value: any,
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{
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path = "",
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optional = false,
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errors = {},
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req,
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ref
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}: { path?: string; optional?: boolean; errors?: any; req: Request; ref?: { key: string | number; obj: any } }
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): Boolean {
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if (!ref) ref = { obj: null, key: "" };
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if (!path) path = "body";
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if (!type) return true; // no type was specified
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try {
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if (value == null) {
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if (optional) return true;
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throw new FieldError("BASE_TYPE_REQUIRED", req.t("common:field.BASE_TYPE_REQUIRED"));
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}
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switch (type) {
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case String:
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value = `${value}`;
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ref.obj[ref.key] = value;
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if (typeof value === "string") return true;
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throw new FieldError("BASE_TYPE_STRING", req.t("common:field.BASE_TYPE_STRING"));
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case Number:
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value = Number(value);
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ref.obj[ref.key] = value;
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if (typeof value === "number" && !isNaN(value)) return true;
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throw new FieldError("BASE_TYPE_NUMBER", req.t("common:field.BASE_TYPE_NUMBER"));
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case BigInt:
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try {
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value = BigInt(value);
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ref.obj[ref.key] = value;
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if (typeof value === "bigint") return true;
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} catch (error) {}
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throw new FieldError("BASE_TYPE_BIGINT", req.t("common:field.BASE_TYPE_BIGINT"));
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case Boolean:
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if (value == "true") value = true;
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if (value == "false") value = false;
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ref.obj[ref.key] = value;
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if (typeof value === "boolean") return true;
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throw new FieldError("BASE_TYPE_BOOLEAN", req.t("common:field.BASE_TYPE_BOOLEAN"));
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case Email:
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if (new Email(value).check()) return true;
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throw new FieldError("EMAIL_TYPE_INVALID_EMAIL", req.t("common:field.EMAIL_TYPE_INVALID_EMAIL"));
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case Date:
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value = new Date(value);
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ref.obj[ref.key] = value;
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// value.getTime() can be < 0, if it is before 1970
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if (!isNaN(value)) return true;
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throw new FieldError("DATE_TYPE_PARSE", req.t("common:field.DATE_TYPE_PARSE"));
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}
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if (typeof type === "object") {
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if (Array.isArray(type)) {
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if (!Array.isArray(value)) throw new FieldError("BASE_TYPE_ARRAY", req.t("common:field.BASE_TYPE_ARRAY"));
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if (!type.length) return true; // type array didn't specify any type
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return (
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value.every((val, i) => {
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errors[i] = {};
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if (
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instanceOf(type[0], val, {
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path: `${path}[${i}]`,
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optional,
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errors: errors[i],
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req,
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ref: { key: i, obj: value }
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}) === true
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) {
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delete errors[i];
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return true;
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}
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return false;
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}) || errors
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);
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} else if (type?.constructor?.name != "Object") {
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if (type instanceof Tuple) {
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if ((<Tuple>type).types.some((x) => instanceOf(x, value, { path, optional, errors, req, ref }))) return true;
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throw new FieldError("BASE_TYPE_CHOICES", req.t("common:field.BASE_TYPE_CHOICES", { types: type.types }));
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} else if (type instanceof Length) {
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let length = <Length>type;
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if (instanceOf(length.type, value, { path, optional, req, ref, errors }) !== true) return errors;
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let val = ref.obj[ref.key];
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if ((<Length>type).check(val)) return true;
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throw new FieldError(
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"BASE_TYPE_BAD_LENGTH",
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req.t("common:field.BASE_TYPE_BAD_LENGTH", {
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length: `${type.min} - ${type.max}`
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})
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);
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}
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try {
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if (value instanceof type) return true;
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} catch (error) {
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throw new FieldError("BASE_TYPE_CLASS", req.t("common:field.BASE_TYPE_CLASS", { type }));
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}
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}
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if (typeof value !== "object") throw new FieldError("BASE_TYPE_OBJECT", req.t("common:field.BASE_TYPE_OBJECT"));
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const diff = Object.keys(value).missing(
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Object.keys(type).map((x) => (x.startsWith(OPTIONAL_PREFIX) ? x.slice(OPTIONAL_PREFIX.length) : x))
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);
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if (diff.length) throw new FieldError("UNKOWN_FIELD", req.t("common:field.UNKOWN_FIELD", { key: diff }));
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return (
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Object.keys(type).every((key) => {
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let newKey = key;
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const OPTIONAL = key.startsWith(OPTIONAL_PREFIX);
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if (OPTIONAL) newKey = newKey.slice(OPTIONAL_PREFIX.length);
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errors[newKey] = {};
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if (
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instanceOf(type[key], value[newKey], {
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path: `${path}.${newKey}`,
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optional: OPTIONAL,
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errors: errors[newKey],
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req,
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ref: { key: newKey, obj: value }
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}) === true
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) {
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delete errors[newKey];
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return true;
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}
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return false;
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}) || errors
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);
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} else if (typeof type === "number" || typeof type === "string" || typeof type === "boolean") {
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if (value === type) return true;
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throw new FieldError("BASE_TYPE_CONSTANT", req.t("common:field.BASE_TYPE_CONSTANT", { value: type }));
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} else if (typeof type === "bigint") {
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if (BigInt(value) === type) return true;
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throw new FieldError("BASE_TYPE_CONSTANT", req.t("common:field.BASE_TYPE_CONSTANT", { value: type }));
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}
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return type == value;
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} catch (error) {
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let e = error as FieldError;
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errors._errors = [{ message: e.message, code: e.code }];
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return errors;
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}
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}
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