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Marc-André Bombeck
0eac84aa95
The resolver queried the online provider first and read the mounted GeoLite2 databases only when that missed. Every document describing the feature said the opposite, including the self-hosting runbook and the admin notification that tells an operator their login IPs are leaving the server. So an operator who mounted the databases in order to stop that egress kept all of it, and nothing said so: the location resolved, the admin overview filled in, and the only difference was where the address had been. Now the local databases answer and the provider only ever sees an address they could not place. A host with the City database mounted and a hit makes no request at all — including when the ASN database is absent, because reaching out for a carrier string would send the address off the host anyway, which is the thing the mount was for. IP_GEO_LOOKUP_DISABLED=1 remains the full off-switch: it disables the online step only, so an offline hit still resolves and an offline miss returns nothing rather than going online. The wide-event warning on the fallback path named ipwho.is even when the operator had pointed IP_GEO_LOOKUP_URL somewhere else; it now names the host the runtime actually queries. The admin notification copy needed no change — it fires only when the databases are absent, and then every lookup does go online. The two cases in geo-asn.test.ts that pinned the old order are the watched red for this change.
src/
Application source. HealthLog is a Next.js 16 App Router project (output: "standalone", React 19, TypeScript strict). The path alias @/* resolves to this directory. Everything a request touches lives under here; the layout below follows the request flow rather than alphabetical order.
Request flow
client → src/proxy.ts → src/app/<route>/route.ts → src/lib/api-handler.ts → handler body → src/lib/api-response.ts → client
proxy.ts— the HTTP edge (Next.js 16's renamedmiddleware). Public-path allowlist, demo-mode mutation block, server-side onboarding redirect, worker-only refusal,x-request-id+ CSP nonce generation, every security header.app/— App Router pages (RSC by default) and API routes. Every API route wraps its handler inapiHandler. Seeapp/README.md.lib/— the server/runtime toolkit:apiHandler, auth, crypto, rollups, AI, notifications, pg-boss jobs, integrations, rate limiting. Seelib/README.md.components/— React components (shadcn/ui new-york, kebab-case files). Seecomponents/README.md.
Other directories
hooks/— shared React hooks (use-prefix, kebab-case).types/— shared TypeScript declarations.generated/prisma/— the generated Prisma client (do not edit; regenerated byprisma generate). Imported as@/generated/prisma.instrumentation.ts— Next.js startup hook; boots the pg-boss worker registry and boot-time backfill queues.__tests__/— cross-cutting unit tests; most tests live in__tests__/folders next to the code they cover.
Conventions
See ../CLAUDE.md for the full set. The load-bearing ones: RSC by default ("use client" only when a hook/state/browser API needs it); every API route wraps apiHandler and parses its body with Zod safeParse; userId is always narrowed from session or Bearer, never accepted as a body field; TanStack Query keys come only from src/lib/query-keys/; outbound HTTP goes through src/lib/safe-fetch.ts.