import {v3} from './api.js';

import optionsStorage from '../options-storage.js';

const settings = optionsStorage.getAll();

export async function getToken(): Promise<string | undefined> {

const {personalToken} = await settings;

return personalToken;

}

export async function expectToken(): Promise<string> {

const personalToken = await getToken();

if (!personalToken) {

throw new Error('Personal token required for this feature');

}

return personalToken;

}

export async function parseTokenScopes(headers: Headers): Promise<string[]> {

// If `X-OAuth-Scopes` is not present, the token may be not a classic token.

const scopesHeader = headers.get('X-OAuth-Scopes');

if (!scopesHeader) {

return [];

}

const scopes = scopesHeader.split(', ');

scopes.push('valid_token');

if (scopes.includes('repo')) {

scopes.push('public_repo');

}

if (scopes.includes('project')) {

scopes.push('read:project');

}

return scopes;

}

export async function expectTokenScope(scope: string): Promise<void> {

const {headers} = await v3('/');

const tokenScopes = await parseTokenScopes(headers);

if (!tokenScopes.includes(scope)) {

throw new Error('The token you provided does not have ' + (tokenScopes.length > 0 ? `the \`${scope}\` scope. It only includes \`${tokenScopes.join(', ')}\`.` : 'any scope. You can change the scope of your token at https://github.com/settings/tokens'));

}

}