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<script>
import { GlButton } from '@gitlab/ui';
import axios from '~/lib/utils/axios_utils';
import {
I18N_DEFAULT_SIGN_IN_BUTTON_TEXT,
OAUTH_WINDOW_OPTIONS,
PKCE_CODE_CHALLENGE_DIGEST_ALGORITHM,
} from '~/jira_connect/subscriptions/constants';
import { setUrlParams } from '~/lib/utils/url_utility';
import AccessorUtilities from '~/lib/utils/accessor';
import { createCodeVerifier, createCodeChallenge } from '../pkce';
export default {
components: {
GlButton,
},
inject: ['oauthMetadata'],
data() {
return {
token: null,
loading: false,
codeVerifier: null,
canUseCrypto: AccessorUtilities.canUseCrypto(),
};
},
mounted() {
window.addEventListener('message', this.handleWindowMessage);
},
beforeDestroy() {
window.removeEventListener('message', this.handleWindowMessage);
},
methods: {
async startOAuthFlow() {
this.loading = true;
// Generate state necessary for PKCE OAuth flow
this.codeVerifier = createCodeVerifier();
const codeChallenge = await createCodeChallenge(this.codeVerifier);
// Build the initial OAuth authorization URL
const { oauth_authorize_url: oauthAuthorizeURL } = this.oauthMetadata;
const oauthAuthorizeURLWithChallenge = setUrlParams(
{
code_challenge: codeChallenge,
code_challenge_method: PKCE_CODE_CHALLENGE_DIGEST_ALGORITHM.short,
},
oauthAuthorizeURL,
);
window.open(
oauthAuthorizeURLWithChallenge,
this.$options.i18n.defaultButtonText,
OAUTH_WINDOW_OPTIONS,
);
},
async handleWindowMessage(event) {
if (window.origin !== event.origin) {
this.loading = false;
this.handleError();
return;
}
// Verify that OAuth state isn't altered.
const state = event.data?.state;
if (state !== this.oauthMetadata.state) {
this.loading = false;
this.handleError();
return;
}
// Request access token and load the authenticated user.
const code = event.data?.code;
try {
const accessToken = await this.getOAuthToken(code);
await this.loadUser(accessToken);
} catch (e) {
this.handleError();
} finally {
this.loading = false;
}
},
handleError() {
this.$emit('error');
},
async getOAuthToken(code) {
const {
oauth_token_payload: oauthTokenPayload,
oauth_token_url: oauthTokenURL,
} = this.oauthMetadata;
const { data } = await axios.post(oauthTokenURL, {
...oauthTokenPayload,
code,
code_verifier: this.codeVerifier,
});
return data.access_token;
},
async loadUser(accessToken) {
const { data } = await axios.get('/api/v4/user', {
headers: { Authorization: `Bearer ${accessToken}` },
});
this.$emit('sign-in', data);
},
},
i18n: {
defaultButtonText: I18N_DEFAULT_SIGN_IN_BUTTON_TEXT,
},
};
</script>
<template>
<gl-button
category="primary"
variant="info"
:loading="loading"
:disabled="!canUseCrypto"
@click="startOAuthFlow"
>
<slot>
{{ $options.i18n.defaultButtonText }}
</slot>
</gl-button>
</template>
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