feat: added a route to display info of a wallet (balance)

Author: propilideno

1-simple-transactional-blockchain/README.md

@@ -1,5 +1,6 @@
 # Simple Blockchain implementation
-
+Above is a function to automatically generate rsa key pair to be used as transaction wallets
+`wallet_id` should be a `base64_encoded_public_key` instead of a plain string like `Lucas`
 ```bash
 # Generate key pairs for testing in transactions and mining
 genkeypair(){
@@ -10,13 +11,13 @@ genkeypair(){
     mkdir -p $KEY_DIR && openssl genpkey -algorithm RSA -out $PVT_KEY -pkeyopt rsa_keygen_bits:1024 && openssl rsa -pubout -in $PVT_KEY -out $PUB_KEY && echo "$1: $(base64 -w0 $PUB_KEY)" >> $WALLETS
 }
 ```
-
 ## Routes
+- GET /info?wallet=**wallet_id**
 - GET /chain
 - GET /memorypool
-- GET /mine?wallet=base64_encoded_public_key
+- GET /mine?wallet=**wallet_id**
 - POST /data/new
-    > body: `{ "from": "Lucas", "to": "Filipe", "amount": 10 }`
+    - body: `{ "from": "Lucas", "to": "Filipe", "amount": 10 }`
 
 ## Lacks of
 - Persistence

1-simple-transactional-blockchain/blockchain.go

@@ -216,5 +216,15 @@ func main() {
 		return c.Status(fiber.StatusOK).JSON(response)
 	})
 
+	// Get information of a wallet
+	app.Get("/info", func(c *fiber.Ctx) error {
+		blockchain := c.Locals("blockchain").(*Blockchain)
+		wallet := c.Query("wallet")
+		response := fiber.Map{
+			"balance": blockchain.getBalance(wallet),
+		}
+		return c.Status(fiber.StatusOK).JSON(response)
+	})
+
 	app.Listen(":7000")
 }

README.md

@@ -90,12 +90,19 @@ classDiagram
     Block3 <|-- Block4 : PreviousHash
 ```
 #### Routes
+- GET /info?wallet=**wallet_id**
 - GET /chain
 - GET /memorypool
-- GET /mine?wallet=**base64_encoded_public_key**
+- GET /mine?wallet=**wallet_id**
 - POST /data/new
     - body: `{ "from": "Lucas", "to": "Filipe", "amount": 10 }`
 
+## Lacks of
+- Persistence
+- Descentralization
+    - P2P Network
+    - Node discovery
+
 #### Lacks of
 - Persistence
 - Descentralization