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| 1 | +import type { H3Event } from 'h3' |
| 2 | +import { eventHandler, getQuery, sendRedirect } from 'h3' |
| 3 | +import { withQuery } from 'ufo' |
| 4 | +import { defu } from 'defu' |
| 5 | +import { handleMissingConfiguration, handleAccessTokenErrorResponse, getOAuthRedirectURL, requestAccessToken } from '../utils' |
| 6 | +import { useRuntimeConfig, createError } from '#imports' |
| 7 | +import type { OAuthConfig } from '#auth-utils' |
| 8 | + |
| 9 | +export interface OAuthLinearConfig { |
| 10 | + /** |
| 11 | + * Linear OAuth Client ID |
| 12 | + * @default process.env.NUXT_OAUTH_LINEAR_CLIENT_ID |
| 13 | + */ |
| 14 | + clientId?: string |
| 15 | + /** |
| 16 | + * Linear OAuth Client Secret |
| 17 | + * @default process.env.NUXT_OAUTH_LINEAR_CLIENT_SECRET |
| 18 | + */ |
| 19 | + clientSecret?: string |
| 20 | + /** |
| 21 | + * Linear OAuth Scope |
| 22 | + * @default ['read'] |
| 23 | + * @see https://developers.linear.app/docs/oauth/authentication#scopes |
| 24 | + * @example ['read', 'write', 'issues:create', 'comments:create', 'timeSchedule:write', 'admin'] |
| 25 | + */ |
| 26 | + scope?: string[] |
| 27 | + /** |
| 28 | + * Linear OAuth Authorization URL |
| 29 | + * @default 'https://linear.app/oauth/authorize' |
| 30 | + */ |
| 31 | + authorizationURL?: string |
| 32 | + /** |
| 33 | + * Linear OAuth Token URL |
| 34 | + * @default 'https://api.linear.app/oauth/token' |
| 35 | + */ |
| 36 | + tokenURL?: string |
| 37 | + /** |
| 38 | + * Extra authorization parameters to provide to the authorization URL |
| 39 | + * @see https://developers.linear.app/docs/oauth/authentication#id-2.-redirect-user-access-requests-to-linear |
| 40 | + */ |
| 41 | + authorizationParams?: Record<string, string> |
| 42 | + /** |
| 43 | + * Redirect URL to allow overriding for situations like prod failing to determine public hostname |
| 44 | + * @default process.env.NUXT_OAUTH_LINEAR_REDIRECT_URL or current URL |
| 45 | + */ |
| 46 | + redirectURL?: string |
| 47 | +} |
| 48 | + |
| 49 | +export function defineOAuthLinearEventHandler({ config, onSuccess, onError }: OAuthConfig<OAuthLinearConfig>) { |
| 50 | + return eventHandler(async (event: H3Event) => { |
| 51 | + config = defu(config, useRuntimeConfig(event).oauth?.linear, { |
| 52 | + authorizationURL: 'https://linear.app/oauth/authorize', |
| 53 | + tokenURL: 'https://api.linear.app/oauth/token', |
| 54 | + authorizationParams: {}, |
| 55 | + }) as OAuthLinearConfig |
| 56 | + |
| 57 | + const query = getQuery<{ code?: string, error?: string }>(event) |
| 58 | + |
| 59 | + if (query.error) { |
| 60 | + const error = createError({ |
| 61 | + statusCode: 401, |
| 62 | + message: `Linear login failed: ${query.error || 'Unknown error'}`, |
| 63 | + data: query, |
| 64 | + }) |
| 65 | + if (!onError) throw error |
| 66 | + return onError(event, error) |
| 67 | + } |
| 68 | + |
| 69 | + if (!config.clientId || !config.clientSecret) { |
| 70 | + return handleMissingConfiguration(event, 'linear', ['clientId', 'clientSecret'], onError) |
| 71 | + } |
| 72 | + |
| 73 | + const redirectURL = config.redirectURL || getOAuthRedirectURL(event) |
| 74 | + |
| 75 | + if (!query.code) { |
| 76 | + config.scope = config.scope || ['read'] |
| 77 | + // Redirect to Linear OAuth page |
| 78 | + return sendRedirect( |
| 79 | + event, |
| 80 | + withQuery(config.authorizationURL as string, { |
| 81 | + response_type: 'code', |
| 82 | + client_id: config.clientId, |
| 83 | + redirect_uri: redirectURL, |
| 84 | + scope: config.scope.join(' '), |
| 85 | + ...config.authorizationParams, |
| 86 | + }), |
| 87 | + ) |
| 88 | + } |
| 89 | + |
| 90 | + const tokens = await requestAccessToken(config.tokenURL as string, { |
| 91 | + headers: { |
| 92 | + 'Content-Type': 'application/x-www-form-urlencoded', |
| 93 | + }, |
| 94 | + body: { |
| 95 | + grant_type: 'authorization_code', |
| 96 | + client_id: config.clientId, |
| 97 | + client_secret: config.clientSecret, |
| 98 | + redirect_uri: redirectURL, |
| 99 | + code: query.code, |
| 100 | + }, |
| 101 | + }) |
| 102 | + |
| 103 | + if (tokens.error) { |
| 104 | + return handleAccessTokenErrorResponse(event, 'linear', tokens, onError) |
| 105 | + } |
| 106 | + |
| 107 | + const accessToken = tokens.access_token |
| 108 | + // TODO: improve typing |
| 109 | + // eslint-disable-next-line @typescript-eslint/no-explicit-any |
| 110 | + const user: any = await $fetch('https://api.linear.app/graphql', { |
| 111 | + method: 'POST', |
| 112 | + headers: { |
| 113 | + 'Authorization': `Bearer ${accessToken}`, |
| 114 | + 'Content-Type': 'application/json', |
| 115 | + }, |
| 116 | + body: JSON.stringify({ |
| 117 | + query: '{ viewer { id name email } }', |
| 118 | + }), |
| 119 | + }) |
| 120 | + |
| 121 | + if (!user.data || !user.data.viewer) { |
| 122 | + const error = createError({ |
| 123 | + statusCode: 500, |
| 124 | + message: 'Could not get Linear user', |
| 125 | + data: tokens, |
| 126 | + }) |
| 127 | + if (!onError) throw error |
| 128 | + return onError(event, error) |
| 129 | + } |
| 130 | + |
| 131 | + return onSuccess(event, { |
| 132 | + tokens, |
| 133 | + user: user.data.viewer, |
| 134 | + }) |
| 135 | + }) |
| 136 | +} |
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