From 90bad51a5f2645fa0179f6af589518895329421d Mon Sep 17 00:00:00 2001
From: Yağız Şenal
Date: Tue, 7 Sep 2021 22:53:47 +0300
Subject: Implements staking

---
 src/handlers.rs | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

(limited to 'src/handlers.rs')

diff --git a/src/handlers.rs b/src/handlers.rs
index 5273324..2e9964c 100644
--- a/src/handlers.rs
+++ b/src/handlers.rs
@@ -9,6 +9,7 @@ use jsonwebtoken::errors::ErrorKind;
 use jsonwebtoken::{decode, Algorithm, DecodingKey, TokenData, Validation};
 use lazy_static::lazy_static;
 use log::{debug, warn};
+use math;
 use md5::Md5;
 use parking_lot::RwLockUpgradableReadGuard;
 use rsa::{PaddingScheme, RSAPrivateKey};
@@ -33,6 +34,8 @@ const TX_UPPER_LIMIT: u16 = 10;
 const TX_LOWER_LIMIT: u16 = 1;
 // Transaction traffic reward
 const TX_TRAFFIC_REWARD: u16 = 1;
+// Staking reward
+const STAKING_REWARD: f64 = 0.1; // Percentage
 
 // Encryption primitive
 type Aes128Cbc = Cbc<Aes128, Pkcs7>;
@@ -567,6 +570,7 @@ pub async fn propose_block(
             if let Some(transaction) = pending_transactions.remove(fingerprint) {
                 let source = &transaction.source;
                 let target = &transaction.target;
+                let is_source_bot = users_store.get(source).unwrap().is_bot;
 
                 if let Some(from) = users_store.get_mut(source) {
                     from.balance -= transaction.amount - TX_TRAFFIC_REWARD;
@@ -574,12 +578,17 @@ pub async fn propose_block(
 
                 if let Some(to) = users_store.get_mut(target) {
                     to.balance += transaction.amount;
+                    if is_source_bot {
+                        // Add staking reward
+                        to.balance +=
+                            math::round::ceil((transaction.amount as f64) * STAKING_REWARD, 0)
+                                as u16;
+                    }
                 }
 
                 // if the receiver is a bot, they will reciprocate
                 if users_store.get(target).unwrap().is_bot {
-                    let transaction_id =
-                        calculate_transaction_id(&transaction.target, &transaction.source);
+                    let transaction_id = calculate_transaction_id(target, source);
                     pending_transactions.insert(
                         transaction_id,
                         Transaction {
-- 
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