architecture.md

%% Architecture sequence diagram is written in Mermaid markdown syntax %% using Mermaid JS https://github.com/mermaid-js/mermaid sequenceDiagram participant T as Twitter participant F as FrontEnd participant B as BackEnd Participant D as Database Participant M as MiddleWare Participant BT as BrainTree T -->> T: User tweets "Hey @charityyeti" T ->> B: Twitter sends registered listener event B -->> B: Drops event on tweetQueue channel B -->> B: Processes Twitter data on event B ->> D: Saves new entry to DB B -->> T: Replies to invoker with custom donation URL T ->> F: User opens custom link and fills out donation fields F ->> BT: Front end initiates transaction BT -->> F: Brain Tree sends transaction nonce back on request F ->> B: Front end sends nonce and required data to backend B ->> M: Backend forwards nonce and required data to middleware M ->> BT: Middleware forwards nonce to Brain Tree to finalize transaction BT -->> M: Brain Tree responds good or bad M ->> B: Middleware forwards to backend B ->> D: Update Tweet DB collection B ->> D: Update Transaction DB collection B -->> F: Back end sends status to front end B -->> T: Back end tweets successful donation to the original tweet