@startuml

title "Vision Note Cart to WebCat Cart in Dabory ERP"

boundary UserView as userpage
participant WP_Page as frontend
database User_Meta as storage
participant ERP_APP_API as backend
participant ERPBackAPI as backapi

database ERP_DB as db

autonumber

userpage->frontend: input App Guest Info

note over frontend
<b>App Guest Info</b>
<b>[in User Profile Page]</b>
 <b>1. AppUri</b>
   Target ERP App URI
 <b>2. AppBase64</b>
   AppKey provided 
   by daborysso member
end note

frontend->storage: Save 'App Guest Info' in WP_DB

userpage->frontend: choose product and option
note over frontend #73EDFC
<b>[Product Page]</b>
 <b>1. Product/Option </b>
 <b>2. Discount Rate</b>
end note

userpage->frontend: push product info to cart

storage->frontend: Get App Guest Info
frontend->frontend: proceed to cart page

note over frontend #FCC873
<b>[Cart Page]</b>
 <b>1. Product/Option </b>
 <b>2. Discount Rate</b>
end note

frontend->backend: Request /gate-token-get
backend->frontend: Response GateToken & BackAPIUri
note over frontend #99FF99
 <b>[Cart Page Request]</b>
 <b>1.GateToken in HTTP Header</b>
 <b>2.BackAPIUri in Host</b>
 <b>3. Product-ID / Price in Json</b> 
 !! GateToken and BackAPIUri 
    shoud be saved in Session !!
end note

frontend->backapi: request /webcat-cart
backapi->db: add a cart
db->backapi: OK
backapi->frontend: respose OK

frontend->userpage: WebCatCart Added successfully

@enduml