hot-coffee.md

TODO list

- manual testing after the completion of the each sub task or general task 
- structured logging at each step
- appropriate error handling
- task must be done in the order they provided 

- validation must include: 
1. Empty value check
2. ID divergence check
3. ID collision check 
4. Items dudplicate check 
5. Negative quantity check 
6. Empty items check

- [x] Routing

- [x] Inventory
    - [x] Inventory storage
    - [x] Inventory service 
    - [x] Inventory Handler 
    - [x] Validation
    - [x] Manual testing

- [x] Menu 
    - [x] Menu storage
    - [x] Menu service
    - [x] Menu handler
    - [x] Validation
    - [x] Manual testing

- [x] Orders
    - [] Order service
    - [x] Ingridients sufficiency validation
    - [x] Ingridients deduction
    - [x] Order storage 
    - [x] Order handler
    - [x] Validation
    - [x] Manual testing

- [x] Aggregation functions
- [x] Flag
- [x] Manual testing

Project structure

- /internal/core contains domain related entities
- /internal/repositories contains repository interfaces and implementations
- /internal/services contains interfaces of services of the project and its implementations
- /internal/infrastructure contains controllers and different handlers not related to service directly
- /internal/utils contains utilities used by different packages
- /internal/flag contains program argument parsing

Backlog

- [ ] Refactor:
    - [ ] Generalize many methods
- [ ] Streaming reading of JSON files
- [ ] Unit, integration tests
- [ ] Dependency injection
- [ ] Logger instance
- [ ] Validator