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1import FungibleToken from 0xf233dcee88fe0abe
2import TSHOT from 0x05b67ba314000b2d
3import TSHOTExchange from 0x05b67ba314000b2d
4
5transaction(betAmount: UFix64) {
6
7    prepare(signer: auth(Storage, BorrowValue, Capabilities) &Account) {
8
9        // enforce 50-TSHOT limit (unchanged)
10        if betAmount > 50.0 {
11            panic("Cannot commit more than 50 TSHOT.")
12        }
13
14        // withdraw bet from the user's vault
15        let vaultRef = signer.storage
16            .borrow<auth(FungibleToken.Withdraw) & TSHOT.Vault>(from: /storage/TSHOTTokenVault)
17            ?? panic("Cannot borrow TSHOT vault")
18        let bet <- vaultRef.withdraw(amount: betAmount)
19
20        let receipt <- TSHOTExchange.commitSwap(
21            payer: signer.address,
22            bet:   <- bet
23        )
24
25        // save receipt and (optionally) publish capability
26        if signer.storage.type(at: TSHOTExchange.ReceiptStoragePath) != nil {
27            panic("Receipt already stored at ".concat(TSHOTExchange.ReceiptStoragePath.toString()))
28        }
29        signer.storage.save(<- receipt, to: TSHOTExchange.ReceiptStoragePath)
30
31        if signer.capabilities.borrow<&TSHOTExchange.Receipt>(/public/TSHOTReceipt) == nil {
32            let cap = signer.capabilities.storage.issue<&TSHOTExchange.Receipt>(
33                TSHOTExchange.ReceiptStoragePath
34            )
35            signer.capabilities.publish(cap, at: /public/TSHOTReceipt)
36        }
37    }
38
39    execute {
40        log("Commit successful: receipt saved and capability published.")
41    }
42}