payload-authjs/dist/payload/AuthjsAuthStrategy.js

A Payload CMS 3 plugin for Auth.js 5

import NextAuth from "next-auth";
import { withPayload } from "../authjs/withPayload";
import { getAllVirtualFields } from "./utils/getAllVirtualFields";
import { getUserAttributes } from "./utils/getUserAttributes";
export const AUTHJS_STRATEGY_NAME = "Auth.js";
/**
 * Auth.js Authentication Strategy for Payload CMS
 * @see https://payloadcms.com/docs/authentication/custom-strategies
 */ export function AuthjsAuthStrategy(collection, pluginOptions) {
    // Get all virtual fields
    const virtualFields = getAllVirtualFields(collection.fields);
    return {
        name: AUTHJS_STRATEGY_NAME,
        authenticate: async ({ payload, isGraphQL })=>{
            // Get session from authjs
            const { auth } = NextAuth(withPayload(pluginOptions.authjsConfig, {
                payload,
                userCollectionSlug: collection.slug
            }));
            const session = await auth();
            // If no session, return null user
            if (!session?.user) {
                return {
                    user: null
                };
            }
            // Find user in database
            const sanitizedCollectionConfig = payload.collections[collection.slug].config;
            const payloadUser = (await payload.find({
                collection: collection.slug,
                where: session.user.id ? {
                    id: {
                        equals: session.user.id
                    }
                } : {
                    email: {
                        equals: session.user.email
                    }
                },
                depth: isGraphQL ? 0 : sanitizedCollectionConfig.auth.depth,
                limit: 1
            })).docs.at(0);
            // If user does not exist in the database, log a warning and return null user
            if (!payloadUser) {
                payload.logger.warn({
                    name: "payload-authjs (AuthjsAuthStrategy)",
                    session
                }, `User '${session.user.id ?? session.user.email}' has a valid Auth.js session but does not exist in the payload database.`);
                return {
                    user: null
                };
            }
            // Get user virtual fields
            const virtualSessionFields = getUserAttributes(session.user, virtualFields);
            // Return user to payload cms
            return {
                user: {
                    _strategy: AUTHJS_STRATEGY_NAME,
                    collection: collection.slug,
                    ...payloadUser,
                    ...virtualSessionFields
                }
            };
        }
    };
}

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