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* Service Invitations de groupe — Logique centralisee pour inviter,
* accepter et lier les membres aux groupes.
*
* Utilise par :
* - POST /groups/:groupId/invitations (envoi invitation)
* - POST /groups/invitations/accept/:token (acceptation manuelle)
* - POST /auth/register (liaison post-inscription automatique)
*
* Securite :
* - Le token brut n'est jamais stocke en base
* - Seul le hash SHA-256 est persiste dans token_hash
* - Expiration 72h
* - Maximum 5 envois par couple (group_id, email)
*
* @module services/groupInvitations
*/
const crypto = require('node:crypto');
const { pool: db } = require('../db');
const { sendEmail } = require('./email');
const { invalidateGroupCache } = require('../helpers/groupAccess');
const INVITATION_TTL_HOURS = 72;
const MAX_SEND_COUNT = 5;
/**
* Hache un token brut en SHA-256 hex.
* @param {string} token
* @returns {string}
*/
function hashToken(token) {
return crypto.createHash('sha256').update(token).digest('hex');
}
/**
* Cree ou renvoie une invitation pour un email dans un groupe.
*
* @param {object} params
* @param {string} params.groupId
* @param {string} params.invitedByUserId
* @param {string} params.email
* @param {object} params.permissions — JSON de permissions
* @param {string} params.appUrl — URL du frontend (pour le lien email)
* @returns {Promise<object>} — L'invitation creee/mise a jour
*/
async function createOrResendInvitation({ groupId, invitedByUserId, email, permissions, appUrl }) {
const normalizedEmail = email.toLowerCase().trim();
// Verifier si l'email est deja membre actif du groupe
const { rows: existingMembers } = await db.query(
`SELECT agm.id FROM access_group_members agm
JOIN users u ON u.id = agm.user_id
WHERE agm.group_id = $1 AND u.email = $2 AND agm.status = 'active'`,
[groupId, normalizedEmail],
);
if (existingMembers.length > 0) {
throw Object.assign(new Error('Cet email est deja membre du groupe.'), { status: 409 });
}
// Verifier s'il existe deja une invitation pour ce couple (group_id, email)
const { rows: existing } = await db.query(
`SELECT id, send_count, accepted_at, revoked_at, expires_at
FROM access_group_invitations
WHERE group_id = $1 AND email = $2
ORDER BY created_at DESC LIMIT 1`,
[groupId, normalizedEmail],
);
if (existing.length > 0) {
const inv = existing[0];
// Deja acceptee
if (inv.accepted_at) {
throw Object.assign(new Error('Cette invitation a deja ete acceptee.'), { status: 409 });
}
// Blocage definitif apres 5 envois
if (inv.send_count >= MAX_SEND_COUNT) {
throw Object.assign(new Error('Limite de renvois atteinte pour cet email.'), { status: 429 });
}
// Non expiree et non revoquee — bloquer le renvoi
if (!inv.revoked_at && inv.expires_at > new Date()) {
throw Object.assign(new Error('Une invitation valide existe deja pour cet email.'), { status: 409 });
}
// Expirée ou revoquée — mettre a jour la ligne existante
const tokenRaw = crypto.randomBytes(32).toString('hex');
const tokenHash = hashToken(tokenRaw);
const expiresAt = new Date(Date.now() + INVITATION_TTL_HOURS * 60 * 60 * 1000);
const { rows: updated } = await db.query(
`UPDATE access_group_invitations
SET token_hash = $1, expires_at = $2, revoked_at = NULL, accepted_at = NULL,
permissions = $3, send_count = send_count + 1, invited_by_user_id = $4
WHERE id = $5
RETURNING id, group_id, email, permissions, send_count, expires_at, created_at`,
[tokenHash, expiresAt, JSON.stringify(permissions), invitedByUserId, inv.id],
);
await sendInvitationEmail(normalizedEmail, tokenRaw, groupId, appUrl);
return updated[0];
}
// Nouvelle invitation
const tokenRaw = crypto.randomBytes(32).toString('hex');
const tokenHash = hashToken(tokenRaw);
const expiresAt = new Date(Date.now() + INVITATION_TTL_HOURS * 60 * 60 * 1000);
const { rows: created } = await db.query(
`INSERT INTO access_group_invitations (group_id, invited_by_user_id, email, token_hash, permissions, expires_at)
VALUES ($1, $2, $3, $4, $5, $6)
RETURNING id, group_id, email, permissions, send_count, expires_at, created_at`,
[groupId, invitedByUserId, normalizedEmail, tokenHash, JSON.stringify(permissions), expiresAt],
);
await sendInvitationEmail(normalizedEmail, tokenRaw, groupId, appUrl);
return created[0];
}
/**
* Accepte une invitation via le token brut.
*
* @param {string} tokenRaw — Token brut recu par email
* @param {string} userId — UUID de l'utilisateur qui accepte
* @returns {Promise<object>} — Le membership cree
*/
async function acceptInvitation(tokenRaw, userId) {
const tokenHash = hashToken(tokenRaw);
const { rows } = await db.query(
`SELECT i.*, ag.owner_user_id
FROM access_group_invitations i
JOIN access_groups ag ON ag.id = i.group_id
WHERE i.token_hash = $1`,
[tokenHash],
);
if (rows.length === 0) {
throw Object.assign(new Error('Invitation introuvable ou invalide.'), { status: 404 });
}
const invitation = rows[0];
if (invitation.accepted_at) {
throw Object.assign(new Error('Invitation deja acceptee.'), { status: 409 });
}
if (invitation.revoked_at) {
throw Object.assign(new Error('Invitation revoquee.'), { status: 410 });
}
if (invitation.expires_at < new Date()) {
throw Object.assign(new Error('Invitation expiree.'), { status: 410 });
}
// Verifier que l'utilisateur n'est pas deja membre actif
const { rows: existingMember } = await db.query(
`SELECT id FROM access_group_members WHERE group_id = $1 AND user_id = $2 AND status = 'active'`,
[invitation.group_id, userId],
);
if (existingMember.length > 0) {
// Marquer l'invitation comme acceptee quand meme
await db.query(
'UPDATE access_group_invitations SET accepted_at = NOW(), linked_user_id = $1 WHERE id = $2',
[userId, invitation.id],
);
throw Object.assign(new Error('Vous etes deja membre de ce groupe.'), { status: 409 });
}
// Creer le membership (ou reactiver si revoque)
const { rows: membership } = await db.query(
`INSERT INTO access_group_members (group_id, user_id, invited_by_user_id, permissions, status, joined_at)
VALUES ($1, $2, $3, $4, 'active', NOW())
ON CONFLICT (group_id, user_id)
DO UPDATE SET status = 'active', permissions = $4, joined_at = NOW(), updated_at = NOW()
RETURNING id, group_id, user_id, permissions, status`,
[invitation.group_id, userId, invitation.invited_by_user_id, JSON.stringify(invitation.permissions)],
);
// Marquer l'invitation comme acceptee
await db.query(
'UPDATE access_group_invitations SET accepted_at = NOW(), linked_user_id = $1 WHERE id = $2',
[userId, invitation.id],
);
// Invalider le cache pour ce membre
invalidateGroupCache(userId, invitation.group_id);
return membership[0];
}
/**
* Accepte automatiquement toutes les invitations en attente pour un email.
* Appele apres la creation d'un compte (POST /auth/register).
*
* @param {string} email
* @param {string} userId
* @returns {Promise<number>} — Nombre d'invitations acceptees
*/
async function acceptPendingInvitationsForEmail(email, userId) {
const normalizedEmail = email.toLowerCase().trim();
const { rows: pending } = await db.query(
`SELECT id, token_hash FROM access_group_invitations
WHERE email = $1 AND accepted_at IS NULL AND revoked_at IS NULL AND expires_at > NOW()`,
[normalizedEmail],
);
let accepted = 0;
for (const inv of pending) {
try {
// On passe par acceptInvitation avec le hash directement
// Mais on ne peut pas car acceptInvitation attend le token brut.
// On fait donc la liaison directement ici.
const { rows: invDetails } = await db.query(
`SELECT i.*, ag.owner_user_id
FROM access_group_invitations i
JOIN access_groups ag ON ag.id = i.group_id
WHERE i.id = $1`,
[inv.id],
);
if (invDetails.length === 0) continue;
const invitation = invDetails[0];
await db.query(
`INSERT INTO access_group_members (group_id, user_id, invited_by_user_id, permissions, status, joined_at)
VALUES ($1, $2, $3, $4, 'active', NOW())
ON CONFLICT (group_id, user_id)
DO UPDATE SET status = 'active', permissions = $4, joined_at = NOW(), updated_at = NOW()`,
[invitation.group_id, userId, invitation.invited_by_user_id, JSON.stringify(invitation.permissions)],
);
await db.query(
'UPDATE access_group_invitations SET accepted_at = NOW(), linked_user_id = $1 WHERE id = $2',
[userId, inv.id],
);
invalidateGroupCache(userId, invitation.group_id);
accepted++;
} catch {
// Ignorer les erreurs individuelles
}
}
return accepted;
}
/**
* Envoie l'email d'invitation.
*/
async function sendInvitationEmail(email, tokenRaw, groupId, appUrl) {
const acceptUrl = `${appUrl || 'https://app.iliacloud.com'}/invite/accept?token=${tokenRaw}`;
try {
await sendEmail({
to: email,
subject: 'Invitation a rejoindre un groupe IliaCloud',
html: `
<h2>Vous avez ete invite sur IliaCloud</h2>
<p>Cliquez sur le lien ci-dessous pour accepter l'invitation :</p>
<p><a href="${acceptUrl}" style="display:inline-block;padding:12px 24px;background:#6366f1;color:#fff;border-radius:8px;text-decoration:none;">Accepter l'invitation</a></p>
<p style="color:#888;font-size:13px;">Ce lien expire dans 72 heures.</p>
`,
text: `Vous avez ete invite sur IliaCloud. Acceptez l'invitation ici : ${acceptUrl}`,
});
} catch (err) {
console.error('[group-invitations] Erreur envoi email:', err.message);
}
}
module.exports = {
createOrResendInvitation,
acceptInvitation,
acceptPendingInvitationsForEmail,
hashToken,
};
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