Organize packages

core/Block.go

@@ -1,4 +1,4 @@
-package main
+package core
 
 import (
 	"time"

core/Blockchain.go

@@ -1,14 +1,16 @@
-package main
+package core
 
 import (
 	"log"
 	"strings"
 	"time"
+
+	"github.com/garritfra/blockchain-project/crypto"
 )
 
 // Blockchain struct
 type Blockchain struct {
-	blocks []Block
+	Blocks []Block
 }
 
 // AddBlock adds a block to the chain
@@ -18,12 +20,12 @@ func (bc *Blockchain) AddBlock(block Block) {
 
 	// Mine Block
 	for {
-		hash := calculateHash(block)
+		hash := crypto.CalculateHash(block)
 		if strings.HasPrefix(hash, "0000") {
 			block.Hash = hash
 			block.Timestamp = time.Now()
 			block.PreviousHash = bc.GetLastHash()
-			bc.blocks = append(bc.blocks, block)
+			bc.Blocks = append(bc.Blocks, block)
 			log.Print("Block Added: ", block.Hash)
 			break
 		}
@@ -36,7 +38,7 @@ func (bc *Blockchain) AddBlock(block Block) {
 func NewBlockchain() Blockchain {
 	log.Print("Creating Blockchain...")
 
-	blockchain := Blockchain{blocks: make([]Block, 0)}
+	blockchain := Blockchain{Blocks: make([]Block, 0)}
 
 	genesisBlock := generateGenesisBlock()
 	blockchain.AddBlock(genesisBlock)
@@ -55,10 +57,10 @@ func generateGenesisBlock() Block {
 // GetLastHash returns the hash of the latest block on the chain
 func (bc *Blockchain) GetLastHash() string {
 
-	bcLength := len(bc.blocks)
+	bcLength := len(bc.Blocks)
 
 	if bcLength == 0 {
 		return "0"
 	}
-	return bc.blocks[len(bc.blocks)-1].Hash
+	return bc.Blocks[len(bc.Blocks)-1].Hash
 }

core/Server.go

@@ -1,47 +0,0 @@
-package main
-
-import (
-	"encoding/gob"
-	"encoding/json"
-	"net/http"
-)
-
-var blockchain Blockchain
-
-// StartServer starts the HTTP server on port 8080
-func StartServer() {
-
-	gob.Register(Block{})
-	gob.Register(Transaction{})
-	gob.Register(Blockchain{})
-
-	blockchain = NewBlockchain()
-	block := Block{}
-
-	transaction := Transaction{Sender: "foo", Receiver: "bar", Amount: 100}
-	block.AddTransaction(transaction)
-
-	go blockchain.AddBlock(block)
-
-	block = Block{}
-
-	transaction = Transaction{Sender: "bar", Receiver: "baz", Amount: 500}
-	block.AddTransaction(transaction)
-
-	go blockchain.AddBlock(block)
-
-	http.HandleFunc("/", redirect)
-	http.HandleFunc("/blockchain", listBlocks)
-
-	if err := http.ListenAndServe(":8080", nil); err != nil {
-		panic(err)
-	}
-}
-
-func redirect(w http.ResponseWriter, r *http.Request) {
-	http.Redirect(w, r, "/blockchain", 301)
-}
-
-func listBlocks(w http.ResponseWriter, r *http.Request) {
-	json.NewEncoder(w).Encode(blockchain.blocks)
-}

core/Transaction.go

@@ -1,4 +1,4 @@
-package main
+package core
 
 // Transaction struct
 type Transaction struct {

core/main.go

@@ -1,5 +0,0 @@
-package main
-
-func main() {
-	StartServer()
-}

crypto/crypto.go

@@ -1,4 +1,4 @@
-package main
+package crypto
 
 import (
 	"bytes"
@@ -7,7 +7,7 @@ import (
 	"encoding/hex"
 )
 
-func calculateHash(obj interface{}) string {
+func CalculateHash(obj interface{}) string {
 	var buffer bytes.Buffer
 	encoder := gob.NewEncoder(&buffer)
 	if err := encoder.Encode(obj); err != nil {

main.go

@@ -0,0 +1,7 @@
+package main
+
+import "github.com/garritfra/blockchain-project/server"
+
+func main() {
+	server.Start()
+}

server/server.go

@@ -0,0 +1,47 @@
+package server
+
+import (
+	"encoding/gob"
+	"encoding/json"
+	"net/http"
+
+	core "github.com/garritfra/blockchain-project/core"
+)
+
+var blockchain core.Blockchain
+
+// Start starts the HTTP server on port 8080
+func Start() {
+	gob.Register(core.Block{})
+	gob.Register(core.Transaction{})
+	gob.Register(core.Blockchain{})
+
+	blockchain = core.NewBlockchain()
+	block := core.Block{}
+
+	transaction := core.Transaction{Sender: "foo", Receiver: "bar", Amount: 100}
+	block.AddTransaction(transaction)
+
+	go blockchain.AddBlock(block)
+
+	block = core.Block{}
+	transaction = core.Transaction{Sender: "bar", Receiver: "baz", Amount: 500}
+	block.AddTransaction(transaction)
+
+	go blockchain.AddBlock(block)
+
+	http.HandleFunc("/", redirect)
+	http.HandleFunc("/blockchain", listBlocks)
+
+	if err := http.ListenAndServe(":8080", nil); err != nil {
+		panic(err)
+	}
+}
+
+func redirect(w http.ResponseWriter, r *http.Request) {
+	http.Redirect(w, r, "/blockchain", 301)
+}
+
+func listBlocks(w http.ResponseWriter, r *http.Request) {
+	json.NewEncoder(w).Encode(blockchain.Blocks)
+}