Rental Approval Flow

Diagram v9.3.2024

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Source Code

Rental Approval Flow Diagram Source
-- render at https://sequencediagram.org
entryspacing 0.7
frame #lightblue Rental Approval Flow 9/3/2024

participantspacing 2
entryspacing 0.5
bottomparticipants

actor "Customer" as customer #orange
lifelinestyle customer #lightgray:1:solid

participant "Louvelle Backend" as backend #D35DC5
lifelinestyle backend #lightgray:1:solid

participant "Stripe" as stripe #lightgreen
lifelinestyle stripe #lightgray:1:solid

database "Rentals Table" as rentals #lightgreen
lifelinestyle rentals #lightgray:1:solid

database "Items Table" as items #lightblue
lifelinestyle items #lightgray:1:solid

participant "Rentals Logs" as rlogs #lightgreen
lifelinestyle rlogs #lightgray:1:solid

actor "Owner" as owner #orange
lifelinestyle owner #lightgray:1:solid

participant "Event Bus" as bus #lightblue
lifelinestyle bus #lightgray:1:solid

customer -> backend:Request Rental
<color #gray>Item ID, Dates, Price</color>

backend -> stripe:Request Authorization

# FAILURE

alt FAILURE
stripe --#red> backend:<color #red>Denied</color>
parallel
backend --> rlogs:Log Authorization Failure
backend --#red> customer:<color #red>Denied</color>
parallel end
activate rlogs
deactivateafter rlogs
box over customer:<color #red>Error Message</color>

# SUCCESS

else SUCCESS
stripe --#green> backend:<color #green>Success</color>
parallel
backend --> rlogs:Log Authorization Success
parallel end
backend -> rentals: Store Transaction Authorization
activate rentals
deactivateafter rentals

backend -> items:Request Item Details
activate items
items --> backend: Item Details
deactivateafter items

alt CONCIERGE ITEM
box over backend:<color #0273bb>CONCIERGE ITEM
backend -> rentals:Create Rental Record <color #gray>status: approved, NOT settled

activate rentals
deactivateafter rentals
backend --> rlogs:Log Rental Record
backend -> stripe:Settle Payment

# settle payment

alt Settled
parallel
box over stripe:<color #green>SETTLED</color>
stripe -> backend:
parallel end
backend -> rentals:Update Rental Record <color #gray>status: approved, settled
activate rentals
deactivateafter rentals

backend --> rlogs:Log Payment Settled

backend --#green> customer:<color #green>Rental Approved</color>
box over customer:<color #green>Rental Approved</color>
backend -> bus:Create Timed Rental Event <color #gray>( Date / Time, item ID, rental ID )
aboxright over bus:<color #0273bb>NEW RENTAL:<color #gray>
Start Date, Rental ID,
Item ID, Destination
backend --> rlogs:Log Rental Event Created

else Not Settled
parallel
box over stripe:<color #red>NOT SETTLED</color>
stripe -> backend:
parallel end
backend --> rlogs:Log Payment Not Settled

backend -#red> customer:<color #red>Payment Issue</color>
rbox over customer:<color #red>Payment Issue</color>
end

else PEER TO PEER ITEM
box over backend:<color #0273bb>PEER-TO-PEER ITEM
backend -> rentals:Create Rental Record <color #gray>status: pending
activate rentals
deactivateafter rentals
backend --#gray> customer:<color #gray>Rental Pending</color>
box over customer:<color #gray>Rental Waiting
 For Approval</color>
backend -> owner:NOTIFICATION: Pending Rentals
note over owner:<color #0273bb>"You have rentals
waiting for approval!"
alt APPROVED
parallel
rbox over owner:<color #green>APPROVED</color>
owner -> backend:
parallel end
backend --> rlogs:Log Rental Approved

backend -> rentals:Request Rental Record
activate rentals
rentals --> backend: Rental Record
deactivateafter rentals
space
backend -> stripe:Settle Payment <color #gray>Transaction ID, Amount, etc
space

# settle payment

alt SETTLED
parallel
box over stripe:<color #green>SETTLED</color>
stripe -> backend:
parallel end
backend --> rlogs:Log Payment Settled
backend -> rentals:Update Rental Record <color #gray>status: approved, settled
activate rentals
deactivateafter rentals
backend -#green> customer:<color #green>NOTIFICATION: Rental Approved</color>
note over customer:<color #green>"Rental of Item 123
has been approved"</color>
backend -> bus:Create Timed Rental Event <color #gray>( Date / Time, item ID, rental ID )
aboxright over bus:<color #0273bb>NEW RENTAL:<color #gray>
Start Date, Rental ID,
Item ID, Destination
backend --> rlogs:Log Rental Event Created

else NOT SETTLED
parallel
box over stripe:<color #red>NOT SETTLED</color>
stripe -> backend:
parallel end
backend --> rlogs:Log Payment Not Settled

backend -#red> customer:<color #red>NOTIFICATION: Payment Issue</color>
note over customer:<color #red>"Payment Issue"
<color #gray>Link to Support</color>
end

backend -> rentals

else NOT APPROVED
parallel
rbox over owner:<color #red>NOT APPROVED</color>
owner -> backend:
parallel end
backend --> rlogs:Log Rental Not Approved

backend -#red> customer:<color #red>NOTIFICATION: Not Approved</color>
note over customer:<color #red>"Not Approved"
<color #gray>Link to Support</color>
end
end
end