package alphabetcontract import ( "github.com/nspcc-dev/neo-go/pkg/interop/contract" "github.com/nspcc-dev/neo-go/pkg/interop/engine" "github.com/nspcc-dev/neo-go/pkg/interop/runtime" "github.com/nspcc-dev/neo-go/pkg/interop/storage" ) type ( irNode struct { key []byte } ) const ( // native gas token script hash gasHash = "\xbc\xaf\x41\xd6\x84\xc7\xd4\xad\x6e\xe0\xd9\x9d\xa9\x70\x7b\x9d\x1f\x0c\x8e\x66" // native neo token script hash neoHash = "\x25\x05\x9e\xcb\x48\x78\xd3\xa8\x75\xf9\x1c\x51\xce\xde\xd3\x30\xd4\x57\x5f\xde" name = "Dobro" index = 4 netmapContractKey = "netmapScriptHash" ) var ( ctx storage.Context ) func init() { if runtime.GetTrigger() != runtime.Application { panic("contract has not been called in application node") } ctx = storage.GetContext() } func Init(addrNetmap []byte) { if storage.Get(ctx, netmapContractKey) != nil { panic("contract already deployed") } if len(addrNetmap) != 20 { panic("incorrect length of contract script hash") } storage.Put(ctx, netmapContractKey, addrNetmap) runtime.Log(name + " contract initialized") } func Gas() int { contractHash := runtime.GetExecutingScriptHash() return balance(gasHash, contractHash) } func Neo() int { contractHash := runtime.GetExecutingScriptHash() return balance(neoHash, contractHash) } func balance(hash string, addr []byte) int { balance := engine.AppCall([]byte(hash), "balanceOf", addr) return balance.(int) } func irList() []irNode { netmapContractAddr := storage.Get(ctx, netmapContractKey).([]byte) return engine.AppCall(netmapContractAddr, "innerRingList").([]irNode) } func checkPermission(ir []irNode) bool { if len(ir) <= index { return false } node := ir[index] return runtime.CheckWitness(node.key) } func Emit() bool { innerRingKeys := irList() if !checkPermission(innerRingKeys) { panic("invalid invoker") } contractHash := runtime.GetExecutingScriptHash() neo := balance(neoHash, contractHash) _ = engine.AppCall([]byte(neoHash), "transfer", contractHash, contractHash, neo) gas := balance(gasHash, contractHash) gasPerNode := gas * 7 / 8 / len(innerRingKeys) if gasPerNode == 0 { runtime.Log("no gas to emit") return false } for i := range innerRingKeys { node := innerRingKeys[i] address := contract.CreateStandardAccount(node.key) _ = engine.AppCall([]byte(gasHash), "transfer", contractHash, address, gasPerNode) } runtime.Log("utility token has been emitted to inner ring nodes") return true } func Name() string { return name }