1package main
  2
  3import (
  4	"fmt"
  5
  6	"github.com/btcsuite/btcd/chaincfg/chainhash"
  7	"github.com/btcsuite/btcrpcclient"
  8)
  9
 10func explore(client *btcrpcclient.Client, blockHash string) {
 11	var realBlocks int
 12	for blockHash != "" {
 13		//generate hash from string
 14		bh, err := chainhash.NewHashFromStr(blockHash)
 15		check(err)
 16		block, err := client.GetBlockVerbose(bh)
 17		check(err)
 18
 19		var newBlock BlockModel
 20		newBlock.Hash = block.Hash
 21		newBlock.Height = block.Height
 22		newBlock.Confirmations = block.Confirmations
 23
 24		//get Fee value
 25		th, err := chainhash.NewHashFromStr(block.Tx[0])
 26		check(err)
 27		tx, err := client.GetRawTransactionVerbose(th)
 28		check(err)
 29		var totalFee float64
 30		for _, Vo := range tx.Vout {
 31			totalFee = totalFee + Vo.Value
 32		}
 33		newBlock.Fee = totalFee
 34
 35		//for each Tx, get the Tx value
 36		var totalAmount float64
 37		/*inside each block, there are []Tx
 38		inside each Tx, if is the Tx[0], is the Fees
 39		in the Tx[n] where n>0, each Tx is independent,
 40		and inside each Tx there are []Vout.
 41		Usually Vout[0] is the real Tx value
 42		and the Vout[1] is the rest of the amount in the original wallet.
 43		Each Tx moves all the wallet amount, and the realTx amount is sent to the destination
 44		and the rest of the wallet amount, is send to another owned wallet
 45		*/
 46		if len(block.Tx) < 10 {
 47			for k, txHash := range block.Tx {
 48				//first Tx is the Fee
 49				//after first Tx is the Sent Amount
 50				if k > 0 {
 51					th, err := chainhash.NewHashFromStr(txHash)
 52					check(err)
 53					tx, err := client.GetRawTransactionVerbose(th)
 54					check(err)
 55					var originAddress string
 56					for _, Vi := range tx.Vin {
 57						th, err := chainhash.NewHashFromStr(Vi.Txid)
 58						check(err)
 59						txVi, err := client.GetRawTransactionVerbose(th)
 60						check(err)
 61						if len(txVi.Vout[0].ScriptPubKey.Addresses) > 0 {
 62							originAddress = txVi.Vout[0].ScriptPubKey.Addresses[0]
 63						}
 64					}
 65					for _, Vo := range tx.Vout {
 66						totalAmount = totalAmount + Vo.Value
 67
 68						var blockTx TxModel
 69						blockTx.Txid = tx.Txid
 70						blockTx.Amount = Vo.Value
 71						blockTx.From = originAddress
 72						blockTx.To = Vo.ScriptPubKey.Addresses[0]
 73						newBlock.Tx = append(newBlock.Tx, blockTx)
 74					}
 75				}
 76			}
 77
 78			if totalAmount > 0 {
 79				newBlock.Amount = totalAmount
 80				saveBlock(blockCollection, newBlock)
 81				fmt.Print("Height: ")
 82				fmt.Println(newBlock.Height)
 83				fmt.Print("Amount: ")
 84				fmt.Println(newBlock.Amount)
 85				fmt.Print("Fee: ")
 86				fmt.Println(newBlock.Fee)
 87				fmt.Println("-----")
 88				realBlocks++
 89			}
 90		}
 91
 92		//set the next block
 93		blockHash = block.NextHash
 94
 95		//analyze block creator
 96		for _, t := range newBlock.Tx {
 97			var n1 NodeModel
 98			var n2 NodeModel
 99			n1.Id = t.From
100			n1.Label = t.From
101			n1.Title = t.From
102			n1.Value = 1
103			n1.Shape = "dot"
104			n2.Id = t.To
105			n2.Label = t.To
106			n2.Title = t.To
107			n2.Value = 1
108			n2.Shape = "dot"
109
110			var e EdgeModel
111			e.From = t.From
112			e.To = t.To
113			e.Label = t.Amount
114			e.Txid = t.Txid
115
116			saveNode(nodeCollection, n1)
117			saveNode(nodeCollection, n2)
118			saveEdge(edgeCollection, e)
119		}
120
121	}
122	fmt.Print("realBlocks (blocks with Fee and Amount values): ")
123	fmt.Println(realBlocks)
124	fmt.Println("reached the end of blockchain")
125}