products-sequence.txt

title Products upload CSV Sequence

UI/Postman->User-JWT-Controller: Authentication Request \n(/api/authenticate)
User-JWT-Controller --> UI/Postman: JWT token
UI/Postman -> Product Resource: Upload CSV file \n (/api/upload-products)
Product Resource -> Product Resource: Convert CSV file to DTOs
alt Error processing CSV file
note left of Product Resource
    Error Response will be sent, if any error\n happens while processing the CSV file  
end note
Product Resource --> UI/Postman: Error reponse (with exception)
else continue, if no errors
Product Resource -> Product Service: Create Products based on DTOs
Product Service -> Products Mapper: Convert Product DTOs \n to Product Domain objects
note right of Products Mapper
    Mappers are needed to decouble the\n Front-end (controller layer) vs Back-end (Database) layers  
end note
Products Mapper --> Product Service: Converted Product Domain objects
Product Service -> Products Repository: Save all domain objects 
note right of Products Repository
    Save the Product objects to table based \non the SpringBoot Out-of-Box \nJpaRepository implementation
end note
Products Repository --> Product Service: Saved records count
Product Service --> Product Resource : Saved records count
Product Resource --> UI/Postman: Consutruct and Send the response \n count will be sent in X-Total-Count header
end