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import type { NextApiRequest, NextApiResponse } from 'next';
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import { CURRENT_ORIGIN } from '../../../common/envVar';
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import { trackEventMxp } from '../../../modules/analytics/serverAnalytics';
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import { sendEmailNodeRuntime } from '../../../modules/email/send';
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import { checkAuth, extractToken } from '../../../modules/firebase/auth';
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import { getUserFromId } from '../../../modules/firebase/firebaseHelper';
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import { getCustomTokenFromUid } from '../../../modules/firebase/localEncryption';
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import { sendSlackMessageToChannel } from '../../../modules/slack/slack';
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import { apiError, type ApiSchemaRequest, type ApiSchemaResponse } from '../../../shared/apiSchema';
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type Response = ApiSchemaResponse['/api/auth/sendEmailVerificationMail'];
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type Body = ApiSchemaRequest['/api/auth/sendEmailVerificationMail']['fetchOptions']['body'];
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export default async function sendEmailVerificationMail(req: NextApiRequest, res: NextApiResponse<Response>) {
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    try {
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        const userFromToken = await checkAuth(req, 'node-runtime', false);
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        if (!userFromToken) {
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            const token = extractToken(req, 'node-runtime') || '';
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            throw new Error(`uid not found`);
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        }
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        // get latest user info in case it has changed
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        const user = (await getUserFromId(userFromToken.uid))!;
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        const body: Body = req.body;
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        const { source } = body;
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        const { uid, email, displayName } = user;
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        if (user.emailVerified) {
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            res.status(200).json({ data: null, error: null });
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            return;
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        }
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        const token = getCustomTokenFromUid(uid);
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        const verifyLink = `${CURRENT_ORIGIN}/verify-email?token=${token}&source=${source}`;
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        const resp = await sendEmailNodeRuntime({
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            template: 'verify your email',
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            email: email!,
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            mailMergeParams: { name: displayName, verifyLink: verifyLink },
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        });
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        await trackEventMxp(user.uid, 'email_verification_link_sent', {
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            email: user.email,
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        });
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        console.log('sendEmailVerificationMail done ');
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        res.status(200).json({ data: null, error: null });
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    } catch (e: any) {
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        console.error('[sendEmailVerificationMail] catch error:', e);
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        // send verification failure to alerts
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        await sendSlackMessageToChannel('alerts', `[sendEmailVerificationMail] catch error:  ${e.message}`);
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        res.status(400).json({ data: null, error: apiError.unknown_error });
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    }
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}
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