DarkCountryStaking

1
2
3pub contract DarkCountryStaking {
4
5    // Staked Items.
6    // Indicates list of NFTs staked by a user.
7    access(account) var stakedItems: { Address: [UInt64] }
8
9    // Emitted when NFTs are staked
10    pub event ItemsStaked(from: Address, ids: [UInt64])
11
12    // Emitted when NFTs are requested for staking
13    pub event ItemsRequestedForStaking(from: Address, ids: [UInt64])
14    pub event ItemsRequestedForUnstaking(from: Address, ids: [UInt64])
15
16    pub let AdminStoragePath: StoragePath
17
18    pub fun getStakedNFTsForAddress(userAddress: Address): [UInt64]? {
19
20        return self.stakedItems[userAddress]
21    }
22
23    pub fun requestSetStakedNFTsForAddress(userAddress: Address, stakedNFTs: [UInt64]) {
24
25        emit ItemsRequestedForStaking(from: userAddress, ids: stakedNFTs)
26    }
27
28    pub fun requestSetUnstakedNFTsForAddress(userAddress: Address, stakedNFTs: [UInt64]) {
29
30        emit ItemsRequestedForUnstaking(from: userAddress, ids: stakedNFTs)
31    }
32
33    // Admin is a special authorization resource that
34    // allows the owner to perform functions to modify the following:
35    //  1. Staked items
36    pub resource Admin {
37        // sets staked NFTs for a user by theirs addresss
38        //
39        // Parameters: userAddress: The address of the user's account
40        // newStakedItems: new list of items
41        // 
42        // To be used to unstaked the NFTs for user 
43        // only Admin/Minter can do that
44        pub fun setStakedNFTsForAddress(userAddress: Address, stakedNFTs: [UInt64]) {
45
46            DarkCountryStaking.stakedItems[userAddress] = stakedNFTs
47
48            emit ItemsStaked(from: userAddress, ids: stakedNFTs)
49        }
50
51        // createNewAdmin creates a new Admin resource
52        //
53        pub fun createNewAdmin(): @Admin {
54            return <-create Admin()
55        }
56    }
57
58    init () {
59        self.AdminStoragePath = /storage/DarkCountryStakingAdmin
60
61        self.stakedItems = {}
62
63        let admin <- create Admin()
64        self.account.save(<-admin, to: self.AdminStoragePath)
65    }
66}