New Project

metadata.json

{"valueParameterInfo":[["Price",{"valueParameterFormat":{"contents":[6,"₳"],"tag":"DecimalFormat"},"valueParameterDescription":"The price of the item."}]],"slotParameterDescriptions":[["Payment deadline","The _**buyer**_ must pay the _price_ of the item by this time, otherwise the contract is cancelled."],["Complaint deadline","The _**buyer**_ can only complain until this deadline, otherwise the contract will assume the transaction went smoothly and pay the _**seller**_."],["Complaint response deadline","If the _**buyer**_ complained, the _**seller**_ must respond before this deadline, otherwise the contract will assume there was a problem with the transaction and refund the _**buyer**_."],["Mediation deadline","If the _**buyer**_ and the _**seller**_ disagree, the _**mediator**_ must weigh in before this deadline, otherwise the contract will assume there was a problem with the transaction and refund the _**buyer**_."]],"roleDescriptions":[["Buyer","The buyer of the item."],["Mediator","The mediator decides who is right in the case of dispute."],["Seller","The seller of the item."]],"contractType":"Escrow","contractShortDescription":"In this contract a _**seller**_ wants to sell an item (like a bicycle) to a _**buyer**_ for a _price_.","contractName":"Purchase","contractLongDescription":"Neither trusts each other, but they both trust a _**mediator**_. The _**buyer**_ pays the _price_ into the contract account: if both the _**buyer**_ and the _**seller**_ agree that the _**buyer**_ has received the item, then the _**seller**_ receives the _price_; if not, then the _**mediator**_ ensures that the _**buyer**_ gets their money back.","choiceInfo":[["Confirm problem",{"choiceFormat":{"contents":null,"tag":"DefaultFormat"},"choiceDescription":"Acknowledge there was a problem and a refund must be granted."}],["Dismiss claim",{"choiceFormat":{"contents":null,"tag":"DefaultFormat"},"choiceDescription":"The _**Mediator**_ does not see any problem with the exchange and the _**Seller**_ must be paid."}],["Dispute problem",{"choiceFormat":{"contents":null,"tag":"DefaultFormat"},"choiceDescription":"The _**Seller**_ disagrees with the _**Buyer**_ about the claim that something went wrong."}],["Everything is alright",{"choiceFormat":{"contents":null,"tag":"DefaultFormat"},"choiceDescription":"The transaction was uneventful, _**Buyer**_ agrees to pay the _**Seller**_."}],["Report problem",{"choiceFormat":{"contents":null,"tag":"DefaultFormat"},"choiceDescription":"The _**Buyer**_ claims not having received the product that was paid for as agreed and would like a refund."}]]}

playground.marlowe

When
    [Case
        (Deposit
            (Role "Seller")
            (Role "Buyer")
            (Token "" "")
            (ConstantParam "Price")
        )
        (When
            [Case
                (Choice
                    (ChoiceId
                        "Everything is alright"
                        (Role "Buyer")
                    )
                    [Bound 0 0]
                )
                Close , Case
                (Choice
                    (ChoiceId
                        "Report problem"
                        (Role "Buyer")
                    )
                    [Bound 1 1]
                )
                (Pay
                    (Role "Seller")
                    (Account (Role "Buyer"))
                    (Token "" "")
                    (ConstantParam "Price")
                    (When
                        [Case
                            (Choice
                                (ChoiceId
                                    "Confirm problem"
                                    (Role "Seller")
                                )
                                [Bound 1 1]
                            )
                            Close , Case
                            (Choice
                                (ChoiceId
                                    "Dispute problem"
                                    (Role "Seller")
                                )
                                [Bound 0 0]
                            )
                            (When
                                [Case
                                    (Choice
                                        (ChoiceId
                                            "Dismiss claim"
                                            (Role "Mediator")
                                        )
                                        [Bound 0 0]
                                    )
                                    (Pay
                                        (Role "Buyer")
                                        (Party (Role "Seller"))
                                        (Token "" "")
                                        (ConstantParam "Price")
                                        Close 
                                    ), Case
                                    (Choice
                                        (ChoiceId
                                            "Confirm problem"
                                            (Role "Mediator")
                                        )
                                        [Bound 1 1]
                                    )
                                    Close ]
                                (SlotParam "Mediation deadline")
                                Close 
                            )]
                        (SlotParam "Complaint deadline")
                        Close 
                    )
                )]
            (SlotParam "Complaint response deadline")
            Close 
        )]
    (SlotParam "Payment deadline")
    Close 

playground.marlowe.json

{}