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import { DrizzleCasbinAdapter } from './casbin-adapter'
import { createRedisClient } from '@/lib/redis'
/**
* Inline model/policy definitions.
*
* These were previously loaded from .conf/.csv files on disk, but Next.js
* production builds don't bundle non-JS source files, so the filesystem
* paths (src/lib/auth/policies/*) don't exist at runtime in Docker.
*/
const ROUTE_MODEL = `
[request_definition]
r = sub, obj, act
[policy_definition]
p = sub, obj, act
[role_definition]
g = _, _
[policy_effect]
e = some(where (p.eft == allow))
[matchers]
m = g(r.sub, p.sub) && keyMatch2(r.obj, p.obj) && (r.act == p.act || p.act == "*")
`
const RESOURCE_MODEL = `
[request_definition]
r = sub, dom, obj, act
[policy_definition]
p = sub, dom, obj, act
[role_definition]
g = _, _, _
[policy_effect]
e = some(where (p.eft == allow))
[matchers]
m = g(r.sub, p.sub, r.dom) && (r.dom == p.dom || p.dom == "*") && r.obj == p.obj && (r.act == p.act || p.act == "*")
`
const ROUTE_POLICY = `
# Role hierarchy
g, user, guest
g, admin, user
# Guest-accessible (public endpoints)
p, guest, /api/health, *
p, guest, /api/heartbeat, *
p, guest, /api/build-info, *
p, guest, /api/auth/*, *
p, guest, /api/blog/*, GET
p, guest, /api/images/*, GET
p, guest, /api/observe/*, GET
p, guest, /api/flowcharts/browse, GET
p, guest, /api/flowcharts/suggest, GET
p, guest, /api/flowcharts/seeds, GET
p, guest, /api/flowcharts/pdf, *
p, guest, /api/flowcharts/:id, GET
p, guest, /api/flowcharts/:id/related, GET
p, guest, /api/flowcharts/:id/worksheet, GET
p, guest, /api/identity, GET
p, guest, /api/smoke-test-status, GET
p, guest, /api/smoke-test-results, GET
p, guest, /api/metrics, GET
p, guest, /api/coverage-results, GET
p, guest, /api/worksheets/share/*, GET
p, guest, /api/worksheets/preview, *
p, guest, /api/worksheets/download/*, GET
p, guest, /api/download/*, GET
p, guest, /api/audio/clips/*, GET
p, guest, /api/audio/collected-clips, GET
p, guest, /api/audio/collected-clips/manifest, GET
p, guest, /api/create/*, *
p, guest, /api/feature-flags, GET
# Guest-accessible practice & app routes
p, guest, /api/players, *
p, guest, /api/players/*, *
p, guest, /api/family/*, *
p, guest, /api/curriculum/*, *
p, guest, /api/game-results, *
p, guest, /api/game-results/*, *
p, guest, /api/player-stats, *
p, guest, /api/player-stats/*, *
p, guest, /api/settings/*, *
p, guest, /api/worksheets/*, *
p, guest, /api/sessions/*, *
p, guest, /api/enrollment-requests/*, *
p, guest, /api/entry-prompts/*, *
p, guest, /api/flowcharts/*, *
p, guest, /api/flowchart-workshop/*, *
p, guest, /api/abacus-settings, *
p, guest, /api/scanner-settings, *
p, guest, /api/arcade/*, *
p, guest, /api/arcade-session, *
p, guest, /api/realtime/*, *
p, guest, /api/chat/*, *
p, guest, /api/euclid/*, *
p, guest, /api/audio/*, *
p, guest, /api/generate, *
p, guest, /api/user-stats, *
p, guest, /api/vision/*, *
p, guest, /api/remote-camera, *
p, guest, /api/demo/*, *
p, guest, /api/gameplay/*, *
p, guest, /api/notifications/*, *
# Postcards — authenticated users only (keepsakes from voice calls)
p, user, /api/postcards, *
p, user, /api/postcards/*, *
# Song shares — owner routes authenticated only; public read by share code is guest
p, user, /api/songs/*, *
p, guest, /api/song-shares/*, GET
# Guest classroom access (student-side participation only)
# Guests can view a classroom and participate, but cannot create or manage classrooms
p, guest, /api/classrooms/:id, GET
p, guest, /api/classrooms/:id/*, *
p, guest, /api/classrooms/code/:code, GET
p, guest, /api/classroom/*, *
# Billing — tier info + webhook are guest-accessible
p, guest, /api/billing/tier, GET
p, guest, /api/billing/webhook, POST
# Authenticated user routes — classroom creation/management, teacher features, billing
# (user inherits all guest permissions via role hierarchy)
p, user, /api/classrooms, *
p, user, /api/classrooms/*, *
p, user, /api/teacher-flowcharts/*, *
p, user, /api/mcp, *
p, user, /api/billing/checkout, POST
p, user, /api/billing/portal, POST
p, user, /api/households, *
p, user, /api/households/*, *
# Admin-only routes
p, admin, /api/admin/*, *
p, admin, /api/debug/*, *
p, admin, /api/vision-training/*, *
p, admin, /api/dev/*, *
`
const REDIS_CHANNEL = 'casbin:policy-changed'
// Lazy singleton enforcers
let routeEnforcerPromise: Promise<Enforcer> | null = null
let resourceEnforcerPromise: Promise<Enforcer> | null = null
let subscriberSetup = false
/**
* Get the route-level RBAC enforcer (Layer 1).
*
* Uses inline model + policy strings (no filesystem access needed).
* Singleton — created once, reused across requests.
*/
export async function getRouteEnforcer(): Promise<Enforcer> {
if (!routeEnforcerPromise) {
const model = newModelFromString(ROUTE_MODEL)
const adapter = new StringAdapter(ROUTE_POLICY)
routeEnforcerPromise = newEnforcer(model, adapter)
}
return routeEnforcerPromise
}
/**
* Get the resource-level RBAC enforcer (Layer 2).
*
* Uses inline model string + DB adapter. Domain-scoped roles for
* parent/teacher access to specific players/classrooms.
* Singleton — created once, reloaded on policy changes via Redis pub/sub.
*/
export async function getResourceEnforcer(): Promise<Enforcer> {
if (!resourceEnforcerPromise) {
const model = newModelFromString(RESOURCE_MODEL)
const adapter = new DrizzleCasbinAdapter()
resourceEnforcerPromise = newEnforcer(model, adapter)
// Set up Redis subscriber for cross-replica invalidation
if (!subscriberSetup) {
subscriberSetup = true
setupRedisSubscriber()
}
}
return resourceEnforcerPromise
}
/**
* Notify all replicas that resource policies have changed.
* Call this after any mutation to casbin_rules.
*/
export async function notifyPolicyChanged(): Promise<void> {
const subscriber = createRedisClient()
if (!subscriber) return
try {
await subscriber.publish(REDIS_CHANNEL, Date.now().toString())
subscriber.disconnect()
} catch (err) {
console.error('[casbin] Failed to publish policy change:', err)
subscriber.disconnect()
}
}
/**
* Force-reload the resource enforcer from DB.
* Used after bulk operations or on Redis notification.
*/
export async function reloadResourceEnforcer(): Promise<void> {
const enforcer = await getResourceEnforcer()
await enforcer.loadPolicy()
}
function setupRedisSubscriber(): void {
const subscriber = createRedisClient()
if (!subscriber) return
subscriber.subscribe(REDIS_CHANNEL).catch((err) => {
console.error('[casbin] Failed to subscribe to policy channel:', err)
})
subscriber.on('message', async (channel, _message) => {
if (channel === REDIS_CHANNEL) {
try {
await reloadResourceEnforcer()
console.log('[casbin] Reloaded resource policies from Redis notification')
} catch (err) {
console.error('[casbin] Failed to reload policies:', err)
}
}
})
}
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