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fix(api): share base-domain API host
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Tenant subdomains route through api.<base-domain>; nginx forwards the exact storefront host derived from the validated browser origin.
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sdarbinyan
2026-08-20 16:12:37 +04:00
parent e5949c3967
commit 9cd56586fb
15 changed files with 175 additions and 65 deletions
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6
docs/backend/BACKEND-HANDOFF.md
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@@ -15,10 +15,10 @@ hostname normalization, CORS, nginx, TLS, CI secrets, and acceptance checks.
One deployed bundle serves **every customer domain**. There is no per-tenant build. The chain is:
1. [`TenantResolverService`](../../src/app/core/config/tenant-resolver.service.ts) reads the complete current browser hostname and protocol (localhost still uses the development proxy).
2. [`ApiConfigService`](../../src/app/core/config/api-config.service.ts) prefixes that hostname with `api.`: `example.com` becomes `api.example.com`; `store1.example.com` becomes `api.store1.example.com`.
2. [`ApiConfigService`](../../src/app/core/config/api-config.service.ts) uses one API host per base domain: both `example.com` and `store1.example.com` use `api.example.com`.
3. `ApiBootstrapProvider`, auth, legacy API calls, and versioned `/api/...` calls all use that same base.
4. Each derived API hostname owns DNS, TLS, CORS, and a reverse proxy to the backend.
5. Backend tenant lookup recognizes `api.<storefront-host>` as the API alias of `<storefront-host>`; frontend nginx remains `default_server` / `server_name _`, so any attached storefront domain receives the same bundle.
4. Each base domain owns one API DNS/TLS/reverse-proxy entry. nginx validates the browser origin and forwards the complete storefront hostname as `X-Storefront-Host`.
5. Backend tenant lookup uses that trusted storefront hostname, not the shared API `Host`; frontend nginx remains `default_server` / `server_name _`, so any attached storefront domain receives the same bundle.
**What this means for you:** the bootstrap endpoint is the single most important thing to build after auth. Every request must be tenant-scoped server-side, and a tenant must never be able to read another tenant's data — return `403`, not an empty result (see [TRACK-S §2](TRACK-S-SECURITY-RBAC-CONTRACT.md)). The frontend supplies the tenant identity from the hostname; the backend must treat that as an untrusted hint and derive real scope from the authenticated session.