title Authentication sequence diagram
actor User
participant CLI
participant Browser
participant REST API
database DynamoDb
participant Cognito

User->CLI:1- moonenv login
CLI->REST API:2- Initiates the authentication flow
activate REST API
REST API->DynamoDb:3- Saves the new set of token
deactivate REST API
REST API->CLI:4- Returns the set of token
ref over CLI,REST API:It initiates a pooling that finishes\neither when the user sign in or\nwhen it times out
CLI->Browser:5- Opens the login page
User->Browser:6- Insert their credentials
Browser->Cognito:7- Sends the credentials
Cognito->REST API:8- When succeed, callbacks the server
note over Cognito, REST API: There is a bug here that I'll mention later
activate REST API
REST API->DynamoDb:9- Updates the set of token's status
deactivate REST API
CLI->REST API:10- Last looping detects\nthat the auth flow is finished
CLI->REST API:11- Requests the token
REST API->DynamoDb:12- Updates the set of token to\ncompleted status
REST API->Cognito:13- Exchanges the set of token to an access token
Cognito->REST API:14- Returns the new token
REST API->CLI:15- Returns the new token
CLI->User:16- Finishes the process