splatnet3.md

nxapi/splatnet3

SplatNet3Api

This is exported as default.

SplatNet 3 API client. An instance of this class should not be created directly; instead one of the createWith* static methods should be used.

Most of this API is intentionally undocumented. Read the source code at src/api/splatnet3.ts, src/common/auth/splatnet3.ts and src/cli/splatnet3 for examples of using this API. If you need any help using this API ask in #splatnet3 on Discord.

You should review HTTP captures of SplatNet 3 in the Nintendo Switch Online app and attempt to match the behaviour of Nintendo's official app.

SplatNet3Api.createWithCoral

Authenticate to SplatNet 3 using a CoralApi instance.

This function should not be called often. If your project will create a new SplatNet3Api object again for the same user before the SplatNet 3 authentication token expires (usually after 2 hours), you must store the data object this returns and use SplatNet3Api.createWithSavedToken.

import CoralApi, { CoralAuthData } from 'nxapi/coral';
import SplatNet3Api, { SplatNet3AuthData } from 'nxapi/splatnet3';

const coral: CoralApi;
const coral_auth_data: CoralAuthData;

const {splatnet, data} = await SplatNet3Api.createWithCoral(coral, coral_auth_data.user);
// splatnet instanceof SplatNet3Api
// data is a plain object of type SplatNet3AuthData
// data should be saved and reused

SplatNet3Api.createWithSavedToken

Create a SplatNet3Api instance using cached data from SplatNet3Api.createWithCoral or SplatNet3Api.loginWithCoral.

import SplatNet3Api, { SplatNet3AuthData } from 'nxapi/splatnet3';

const auth_data: SplatNet3AuthData;

const splatnet = SplatNet3Api.createWithSavedToken(auth_data);
// splatnet instanceof SplatNet3Api

SplatNet3Api.createWithCliTokenData

Create a SplatNet3Api instance using the output of the nxapi splatnet3 token --json command.

import SplatNet3Api, { SplatNet3CliTokenData } from 'nxapi/splatnet3';

const data: SplatNet3CliTokenData;

const splatnet = SplatNet3Api.createWithCliTokenData(data);
// splatnet instanceof SplatNet3Api

SplatNet3Api.onTokenExpired

Function called when a 401 Unauthorized response is received from the API, meaning the token has expired.

This function should either call SplatNet3Api.loginWithWebServiceToken or SplatNet3Api.loginWithCoral to renew the token, then return the SplatNet3AuthData object, or call SplatNet3Api.renewTokenWithWebServiceToken or SplatNet3Api.renewTokenWithCoral. An existing web service token should be used to avoid calling the imink/flapg API, and then fall back to issuing a new token.

import { ErrorResponse } from 'nxapi';
import CoralApi, { CoralAuthData } from 'nxapi/coral';
import SplatNet3Api, { SplatNet3AuthData } from 'nxapi/splatnet3';
import { Response } from 'node-fetch';

let splatnet3_auth_data: SplatNet3AuthData;
const splatnet = SplatNet3Api.createWithSavedToken(splatnet3_auth_data);

splatnet.onTokenExpired = async (response: Response) => {
    try {
        // This should be cached - using stale data is fine, as only the user data is used
        const coral_auth_data: CoralAuthData;

        const data = await SplatNet3Api.loginWithWebServiceToken(splatnet3_auth_data.webserviceToken, coral_auth_data.user);
        // data is a plain object of type SplatNet3AuthData
        // data should be saved and reused

        splatnet3_auth_data = data;

        return data;
    } catch (err) {
        // `401 Unauthorized` from `/api/bullet_tokens` means the web service token has expired (or is invalid)
        if (err instanceof ErrorResponse && err.response.status === 401) {
            const coral: CoralApi;
            const coral_auth_data: CoralAuthData;

            const data = await SplatNet3Api.loginWithCoral(coral, coral_auth_data.user);
            // data is a plain object of type SplatNet3AuthData
            // data should be saved and reused

            splatnet3_auth_data = data;

            return data;
        }

        throw err;
    }
};

SplatNet3Api.onTokenShouldRenew

Function called when the x-bullettoken-remaining header received from the API is less than 300, meaning the token will expire in 5 minutes and should be renewed in the background.

import SplatNet3Api, { SplatNet3AuthData } from 'nxapi/splatnet3';
import { Response } from 'node-fetch';

const splatnet = SplatNet3Api.createWithSavedToken(...);

splatnet.onTokenShouldRenew = async (remaining: number, response: Response) => {
    // See SplatNet3Api.onTokenExpired for an example
};

API types

SplatNet 3 types are available from splatnet3-types (GitHub).