payload/test/auth/custom-strategy/config.ts

import type { AuthStrategyFunction } from 'payload/auth.js'

import { buildConfigWithDefaults } from '../../buildConfigWithDefaults.js'
import { usersSlug } from './shared.js'

export const strategyName = 'test-local'

const customAuthenticationStrategy: AuthStrategyFunction = async ({ headers, payload }) => {
  const usersQuery = await payload.find({
    collection: usersSlug,
    where: {
      code: {
        equals: headers.get('code'),
      },
      secret: {
        equals: headers.get('secret'),
      },
    },
  })

  const user = usersQuery.docs[0] || null
  if (!user) return null

  return {
    ...user,
    _strategy: `${usersSlug}-${strategyName}`,
    collection: usersSlug,
  }
}

export default buildConfigWithDefaults({
  admin: {
    user: 'users',
  },
  collections: [
    {
      slug: usersSlug,
      access: {
        create: () => true,
      },
      auth: {
        disableLocalStrategy: true,
        strategies: [
          {
            name: strategyName,
            authenticate: customAuthenticationStrategy,
          },
        ],
      },
      fields: [
        {
          name: 'code',
          type: 'text',
          index: true,
          label: 'Code',
          unique: true,
        },
        {
          name: 'secret',
          type: 'text',
          label: 'Secret',
        },
        {
          name: 'name',
          type: 'text',
          label: 'Name',
        },
        {
          name: 'roles',
          type: 'select',
          defaultValue: 'user',
          hasMany: true,
          label: 'Role',
          options: ['admin', 'editor', 'moderator', 'user', 'viewer'],
          required: true,
          saveToJWT: true,
        },
      ],
    },
  ],
})