This is my research into the world of Haskell. Specicificly how to build modern applications (architectures) with Haskell, functional style. Topics will include, but not limited to:

• restful API
• domain driven design
• CQRS / event sourcing
• specification by example
• and so on ...

This repository is (currently) merely a recording of my progress.

• lightweight abstraction on top of WAI, as a micro Restful library
• auto-generate API based op OpenAPI v3 spec
• validate url + query parameters
• validate json body, based on OpenAPI v3 spec
• transform body to transfer objects (for both product and sum types)
• comprehensive validation DSL (json body, url + query parameters)
• strong typed error messages (human + machine interpretable), includes JSON path for Request Body error messages
• JWT authorization / authentication, role based with JWK validation
• "auto wire" transfer objects to commands
• command handlers, sagas, process managers
• aggregates, state, persistence
• event, event handlers
• ... more to come

Sure, just shoot me a message.