Init data

WIP

Installation

npm

npm install @gramio/init-data

yarn

yarn add @gramio/init-data

pnpm

pnpm add @gramio/init-data

bun

bun install @gramio/init-data

Elysia integration example

This example shows how to integrate @gramio/init-data with Elysia via convenient plugin with type safety.

examples at x-init-data header is valid generated init-data which allows you to more easily test your API in OpenAPI Client.

import {
    validateAndParseInitData,
    signInitData,
    getBotTokenSecretKey,
} from "@gramio/init-data";
import { Elysia, t } from "elysia";

const secretKey = getBotTokenSecretKey(process.env.BOT_TOKEN as string);

export const authElysia = new Elysia({
    name: "auth",
})
    .guard({
        headers: t.Object({
            "x-init-data": t.String({
                examples: [
                    signInitData(
                        {
                            user: {
                                id: 1,
                                first_name: "durov",
                                username: "durov",
                            },
                        },
                        secretKey
                    ),
                ],
            }),
        }),
        response: {
            401: t.Literal("UNAUTHORIZED"),
        },
    })
    .resolve(({ headers, error }) => {
        const result = validateAndParseInitData(
            headers["x-init-data"],
            secretKey
        );
        if (!result || !result.user)
            return error("Unauthorized", "UNAUTHORIZED");

        return {
            tgId: result.user.id,
            user: result.user,
        };
    })
    .as("plugin");

const app = new Elysia()
    .get("hello", "world")
    .use(authElysia)
    .get("/user", ({ user }) => {
        user;
    });