Two plural outliers were the only directories in Services/ and Support/ that didn't follow the singular naming convention we normalized in commit 947d00a9 (Documents -> Document).
**Integrations/ExchangeRate/ -> ExchangeRate/.** The Integrations/ umbrella was both plural AND introduced an extra layer of nesting no other Support subdir had (Pdf/, Hashids/, Module/, Update/ are all one level deep). Dropping the umbrella fixes both problems in one move and matches the existing shape. When AI providers eventually land, they follow the same pattern as Support/Pdf/: a sibling subdir at Support/Ai/, not buried under an umbrella.
**Formatters/ -> Formatting/.** Formatter (singular noun) would have been awkward; Formatting (gerund describing the capability) reads naturally as a namespace segment. The subdir holds DateFormatter, TimeFormatter, TimeZones — classes whose common thread is 'things that do formatting', which the gerund captures better than either the singular or plural noun form.
10 files renamed, 4 consumers updated (DriverRegistryProvider, ExchangeRateProviderService, FormatsController, ExchangeRateDriverFactoryTest). 350 tests pass, Pint clean.
Services/Integrations/ExchangeRate/ and Services/Pdf/ were both mostly Support-shaped: interfaces, abstract classes, static factories, concrete adapter drivers, DTOs, and exceptions — infrastructure that doesn't carry business logic. They only each had one real DI-injected service mixed in.
This commit applies the same Services=DI-business-logic / Support=stateless-plumbing rule we've been using throughout the reorg:
**Moved to Support/Integrations/ExchangeRate/** (7 files): ExchangeRateDriver (abstract), ExchangeRateDriverFactory (static), ExchangeRateException, and the four concrete drivers (CurrencyConverter, CurrencyFreak, CurrencyLayer, OpenExchangeRate). These are HTTP adapters over third-party currency APIs — same shape as the Hashids library wrapper classes already in Support.
**Moved to Support/Pdf/** (6 files, merging with existing Pdf utilities): PdfDriver (interface), PdfDriverFactory (static), PdfService (static facade), GotenbergPdfDriver, GotenbergPdfResponse (DTO), ResponseStream (interface). The Support/Pdf/ dir now contains the full PDF rendering subsystem — drivers + sanitizer + template/image utilities.
**Promoted to Services/ root** (the real DI services): ExchangeRateProviderService (CRUD for ExchangeRateProvider model) and FontService (font package install/download orchestration). Both are proper DI services — instance methods, model writes, HTTP side effects.
Services/Integrations/ and Services/Pdf/ are now empty and deleted. Services/ holds only DI-injected classes; Support/ holds all the plumbing.
17 files renamed (git detects 90-99% similarity), 4 consumer files updated (DriverRegistryProvider, PdfServiceProvider, ExchangeRateProviderController, FontController, GeneratesPdfTrait, test). 350 tests pass, Pint clean.
Two follow-ups to the Services reorg that landed in 6d1816bd.
**Documents → Document** (singular). Documents/ was the only plural subdir in app/Services/ — every other bucket (Company, Mail, Module, Pdf, Storage, Update, ExchangeRate) was singular. Renaming to Document/ normalizes the whole tree.
**ExchangeRate → Integrations/ExchangeRate**. Introduces Integrations/ as an umbrella for external-service adapter subsystems. Exchange rate providers move in first; AI providers, payment gateways, and any other driver-pattern integrations land as sibling subdirs (Integrations/Ai/, Integrations/Payment/) without another reorg. Integrations/ was chosen over Providers/ to avoid conceptual collision with Laravel's app/Providers/ — 'check the providers' shouldn't be ambiguous.
17 files moved, 21 consumer files rewritten to point at the new namespaces via literal-string replacement (same approach as the previous reorg). 350 tests pass, Pint clean.
Exchange rate providers are now pluggable via the module Registry. The four built-in drivers (currency_converter, currency_freak, currency_layer, open_exchange_rate) move from a static config array into App\\Providers\\DriverRegistryProvider, which calls Registry::registerExchangeRateDriver() for each during app boot with metadata the frontend needs: label (i18n key), website (help-text URL), and config_fields (schema for driver-specific driver_config JSON).
The Currency Converter's server-type selector and dedicated URL field — previously hardcoded in ExchangeRateProviderModal.vue — are now just another config_fields entry with a visible_when rule that shows the URL input only when type=DEDICATED. Any module that wants to ship a custom driver gets the same treatment for free: declare config_fields in the registration, and the host app's modal renders them automatically.
ExchangeRateDriverFactory::make() falls back to Registry::driverMeta() when a name isn't in the local built-in map, and availableDrivers() merges both sources. ConfigController handles the exchange_rate_drivers key specially by mapping Registry::allDrivers('exchange_rate') to enriched option objects, so the config-file route still works for every other key. The static exchange_rate_drivers + currency_converter_servers arrays in config/invoiceshelf.php are deleted.
Unit tests cover the new Registry::register/flushDrivers, the factory merging built-ins with Registry-contributed drivers, and the factory rejecting unknown names. A feature test exercises the end-to-end /api/v1/config?key=exchange_rate_drivers response shape.
NOTE: this commit depends on invoiceshelf/modules package commit e44d951 which adds the Registry driver API. The package needs to be released and pinned in composer.json before a fresh composer install on this commit will work.
