BackpackMinter

1// SPDX-License-Identifier: UNLICENSED
2import Flunks from 0x807c3d470888cc48
3import Backpack from 0x807c3d470888cc48
4import NonFungibleToken from 0x1d7e57aa55817448
5import MetadataViews from 0x1d7e57aa55817448
6import HybridCustodyHelper from 0x807c3d470888cc48
7
8access(all)
9contract BackpackMinter{ 
10	access(all)
11	event ContractInitialized()
12	
13	access(all)
14	event BackpackClaimed(FlunkTokenID: UInt64, BackpackTokenID: UInt64, signer: Address)
15	
16	access(all)
17	let AdminStoragePath: StoragePath
18	
19	access(self)
20	var backpackClaimedPerFlunkTokenID:{ UInt64: UInt64} // Flunk token ID: backpack token ID
21	
22	
23	access(self)
24	var backpackClaimedPerFlunkTemplate:{ UInt64: UInt64} // Flunks template ID: backpack token ID
25	
26	
27	access(all)
28	fun claimBackPack(tokenID: UInt64, signer: auth(SaveValue, Capabilities, Storage, BorrowValue) &Account, setID: UInt64){ 
29		// verify that the token is not already claimed
30		pre{ 
31			tokenID >= 0 && tokenID <= 9998:
32				"Invalid Flunk token ID"
33			!BackpackMinter.backpackClaimedPerFlunkTokenID.containsKey(tokenID):
34				"Token ID already claimed"
35		}
36		
37		// verify Flunk ownership
38		let ownerCollectionTokenIds =
39			HybridCustodyHelper.getFlunksTokenIDsFromAllLinkedAccounts(ownerAddress: signer.address)
40		if !ownerCollectionTokenIds.contains(tokenID){ 
41			panic("signer is not owner of Flunk")
42		}
43		
44		// HybridCustodyHelper to force re-linking collections
45		HybridCustodyHelper.forceRelinkCollections(signer: signer)
46		
47		// Get recipient receiver capoatility
48		let recipient = getAccount(signer.address)
49		let backpackReceiver =
50			recipient.capabilities.get<&{NonFungibleToken.CollectionPublic}>(
51				Backpack.CollectionPublicPath
52			).borrow()
53			?? panic("Could not get receiver reference to the Backpack NFT Collection")
54		
55		// mint backpack to signer
56		let admin =
57			self.account.storage.borrow<&Backpack.Admin>(from: Backpack.AdminStoragePath)
58			?? panic("Could not borrow a reference to the Backpack Admin")
59		let backpackSet = admin.borrowSet(setID: setID)
60		let backpackNFT <- backpackSet.mintNFT()
61		let backpackTokenID = backpackNFT.id
62		emit BackpackClaimed(
63			FlunkTokenID: tokenID,
64			BackpackTokenID: backpackNFT.id,
65			signer: signer.address
66		)
67		backpackReceiver.deposit(token: <-backpackNFT)
68		BackpackMinter.backpackClaimedPerFlunkTokenID[tokenID] = backpackTokenID
69		let trueOwnerAddress =
70			HybridCustodyHelper.getChildAccountAddressHoldingFlunksTokenId(
71				ownerAddress: signer.address,
72				tokenID: tokenID
73			)
74			?? panic("Could not find true owner for specified tokenID")
75		let trueOwnercollection =
76			getAccount(trueOwnerAddress).capabilities.get<&Flunks.Collection>(
77				Flunks.CollectionPublicPath
78			).borrow()
79			?? panic("Could not borrow a reference to the account's NFT collection")
80		let item = trueOwnercollection.borrowNFT(tokenID)
81		let serialView =
82			item?.resolveView(Type<MetadataViews.Serial>())
83			?? panic("Could not get the item's serial view")
84		let serial = serialView as! MetadataViews.Serial?
85		let templateID = serial?.number ?? 0
86		BackpackMinter.backpackClaimedPerFlunkTemplate[templateID] = backpackTokenID
87	}
88	
89	access(all)
90	fun getClaimedBackPacksPerFlunkTokenID():{ UInt64: UInt64}{ 
91		return BackpackMinter.backpackClaimedPerFlunkTokenID
92	}
93	
94	access(all)
95	fun getClaimedBackPacksPerFlunkTemplateID():{ UInt64: UInt64}{ 
96		return BackpackMinter.backpackClaimedPerFlunkTemplate
97	}
98	
99	init(){ 
100		self.AdminStoragePath = /storage/BackpackMinterAdmin
101		self.backpackClaimedPerFlunkTokenID ={} 
102		self.backpackClaimedPerFlunkTemplate ={} 
103		emit ContractInitialized()
104	}
105}
106