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| 1 | +import crypto from 'node:crypto' |
| 2 | +import type { H3Event } from 'h3' |
| 3 | +import { eventHandler, getQuery, sendRedirect } from 'h3' |
| 4 | +import { withQuery } from 'ufo' |
| 5 | +import { defu } from 'defu' |
| 6 | +import { |
| 7 | + handleMissingConfiguration, |
| 8 | + handleAccessTokenErrorResponse, |
| 9 | + getOAuthRedirectURL, |
| 10 | + requestAccessToken, |
| 11 | + type RequestAccessTokenBody, |
| 12 | +} from '../utils' |
| 13 | +import { useRuntimeConfig, createError } from '#imports' |
| 14 | +import type { OAuthConfig } from '#auth-utils' |
| 15 | + |
| 16 | +export interface OAuthVKConfig { |
| 17 | + /** |
| 18 | + * VK OAuth Client ID |
| 19 | + * @default process.env.NUXT_OAUTH_VK_CLIENT_ID |
| 20 | + */ |
| 21 | + clientId?: string |
| 22 | + |
| 23 | + /** |
| 24 | + * VK OAuth Client Secret |
| 25 | + * @default process.env.NUXT_OAUTH_VK_CLIENT_SECRET |
| 26 | + */ |
| 27 | + clientSecret?: string |
| 28 | + |
| 29 | + /** |
| 30 | + * VK OAuth Scope |
| 31 | + * @default [] |
| 32 | + * @see https://id.vk.com/about/business/go/docs/en/vkid/latest/vk-id/connection/api-integration/api-description#App-access-to-user-data |
| 33 | + * @example ["email", "phone"] |
| 34 | + */ |
| 35 | + scope?: string[] |
| 36 | + |
| 37 | + /** |
| 38 | + * Require email from user, adds the ['login:email'] scope if not present |
| 39 | + * @default false |
| 40 | + */ |
| 41 | + emailRequired?: boolean |
| 42 | + |
| 43 | + /** |
| 44 | + * VK OAuth Authorization URL |
| 45 | + * @default 'https://id.vk.com/authorize' |
| 46 | + */ |
| 47 | + authorizationURL?: string |
| 48 | + |
| 49 | + /** |
| 50 | + * VK OAuth Token URL |
| 51 | + * @default 'https://id.vk.com/oauth2/auth' |
| 52 | + */ |
| 53 | + tokenURL?: string |
| 54 | + |
| 55 | + /** |
| 56 | + * VK OAuth User URL |
| 57 | + * @default 'https://id.vk.com/oauth2/user_info' |
| 58 | + */ |
| 59 | + userURL?: string |
| 60 | + |
| 61 | + /** |
| 62 | + * Redirect URL to to allow overriding for situations like prod failing to determine public hostname |
| 63 | + * @default process.env.NUXT_OAUTH_VK_REDIRECT_URL or current URL |
| 64 | + */ |
| 65 | + redirectURL?: string |
| 66 | +} |
| 67 | + |
| 68 | +export function oauthVKEventHandler({ |
| 69 | + config, |
| 70 | + onSuccess, |
| 71 | + onError, |
| 72 | +}: OAuthConfig<OAuthVKConfig>) { |
| 73 | + return eventHandler(async (event: H3Event) => { |
| 74 | + config = defu(config, useRuntimeConfig(event).oauth?.vk, { |
| 75 | + authorizationURL: 'https://id.vk.com/authorize', |
| 76 | + tokenURL: 'https://id.vk.com/oauth2/auth', |
| 77 | + userURL: 'https://id.vk.com/oauth2/user_info', |
| 78 | + }) as OAuthVKConfig |
| 79 | + |
| 80 | + const query = getQuery<{ code?: string, device_id?: string }>(event) |
| 81 | + |
| 82 | + if (!config.clientId || !config.clientSecret) { |
| 83 | + return handleMissingConfiguration( |
| 84 | + event, |
| 85 | + 'vk', |
| 86 | + ['clientId', 'clientSecret'], |
| 87 | + onError, |
| 88 | + ) |
| 89 | + } |
| 90 | + |
| 91 | + const codeVerifier = 'verify' |
| 92 | + const redirectURL = config.redirectURL || getOAuthRedirectURL(event) |
| 93 | + |
| 94 | + if (!query.code) { |
| 95 | + config.scope = config.scope || [] |
| 96 | + if (config.emailRequired && !config.scope.includes('email')) { |
| 97 | + config.scope.push('email') |
| 98 | + } |
| 99 | + |
| 100 | + // Redirect to VK Oauth page |
| 101 | + return sendRedirect( |
| 102 | + event, |
| 103 | + withQuery(config.authorizationURL as string, { |
| 104 | + response_type: 'code', |
| 105 | + client_id: config.clientId, |
| 106 | + code_challenge: crypto.createHash('sha256').update(codeVerifier).digest('base64url'), |
| 107 | + code_challenge_method: 's256', |
| 108 | + state: crypto.randomUUID(), |
| 109 | + redirect_uri: redirectURL, |
| 110 | + scope: config.scope.join(' '), |
| 111 | + }), |
| 112 | + ) |
| 113 | + } |
| 114 | + |
| 115 | + interface VKRequestAccessTokenBody extends RequestAccessTokenBody { |
| 116 | + code_verifier?: string |
| 117 | + } |
| 118 | + |
| 119 | + const tokens = await requestAccessToken(config.tokenURL as string, { |
| 120 | + body: { |
| 121 | + grant_type: 'authorization_code', |
| 122 | + code: query.code as string, |
| 123 | + code_verifier: codeVerifier, |
| 124 | + client_id: config.clientId, |
| 125 | + device_id: query.device_id, |
| 126 | + redirect_uri: redirectURL, |
| 127 | + } as VKRequestAccessTokenBody, |
| 128 | + }) |
| 129 | + |
| 130 | + if (tokens.error) { |
| 131 | + return handleAccessTokenErrorResponse(event, 'vk', tokens, onError) |
| 132 | + } |
| 133 | + |
| 134 | + const accessToken = tokens.access_token |
| 135 | + |
| 136 | + // TODO: improve typing |
| 137 | + // eslint-disable-next-line @typescript-eslint/no-explicit-any |
| 138 | + const user: any = await $fetch(config.userURL as string, { |
| 139 | + method: 'POST', |
| 140 | + body: { |
| 141 | + access_token: accessToken, |
| 142 | + client_id: config.clientId, |
| 143 | + }, |
| 144 | + }) |
| 145 | + |
| 146 | + if (!user) { |
| 147 | + const error = createError({ |
| 148 | + statusCode: 500, |
| 149 | + message: 'Could not get VK user', |
| 150 | + data: tokens, |
| 151 | + }) |
| 152 | + if (!onError) throw error |
| 153 | + return onError(event, error) |
| 154 | + } |
| 155 | + |
| 156 | + return onSuccess(event, { |
| 157 | + tokens, |
| 158 | + user, |
| 159 | + }) |
| 160 | + }) |
| 161 | +} |
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