feat: add Bonk trading examples and fix function naming

- Add comprehensive Bonk trading examples in README
- Fix function naming consistency (width -> with)
- Enhance BonkParams with from_trade and from_dev_trade methods
- Add amount calculation utilities and tests

src/trading/bonk/common.rs

@@ -1,6 +1,59 @@
 use crate::constants;
 use solana_sdk::pubkey::Pubkey;
 
+pub fn get_amount_in_net(
+    amount_in: u64,
+    protocol_fee_rate: u128,
+    platform_fee_rate: u128,
+    share_fee_rate: u128,
+) -> u64 {
+    let amount_in_u128 = amount_in as u128;
+    let protocol_fee = (amount_in_u128 * protocol_fee_rate / 10000) as u128;
+    let platform_fee = (amount_in_u128 * platform_fee_rate / 10000) as u128;
+    let share_fee = (amount_in_u128 * share_fee_rate / 10000) as u128;
+    amount_in_u128
+        .checked_sub(protocol_fee)
+        .unwrap()
+        .checked_sub(platform_fee)
+        .unwrap()
+        .checked_sub(share_fee)
+        .unwrap() as u64
+}
+
+pub fn get_amount_in(
+    amount_out: u64,
+    protocol_fee_rate: u128,
+    platform_fee_rate: u128,
+    share_fee_rate: u128,
+    virtual_base: u128,
+    virtual_quote: u128,
+    real_base: u128,
+    real_quote: u128,
+    slippage_basis_points: u128,
+) -> u64 {
+    let amount_out_u128 = amount_out as u128;
+
+    // 考虑滑点，实际需要的输出金额更高
+    let amount_out_with_slippage = amount_out_u128 * 10000 / (10000 - slippage_basis_points);
+
+    let input_reserve = virtual_quote.checked_add(real_quote).unwrap();
+    let output_reserve = virtual_base.checked_sub(real_base).unwrap();
+
+    // 根据 AMM 公式反推: amount_in_net = (amount_out * input_reserve) / (output_reserve - amount_out)
+    let numerator = amount_out_with_slippage.checked_mul(input_reserve).unwrap();
+    let denominator = output_reserve
+        .checked_sub(amount_out_with_slippage)
+        .unwrap();
+    let amount_in_net = numerator.checked_div(denominator).unwrap();
+
+    // 计算总费用率
+    let total_fee_rate = protocol_fee_rate + platform_fee_rate + share_fee_rate;
+
+    let amount_in = amount_in_net * 10000 / (10000 - total_fee_rate);
+
+    amount_in as u64
+}
+
 pub fn get_amount_out(
     amount_in: u64,
     protocol_fee_rate: u128,
@@ -80,3 +133,57 @@ pub fn get_token_price(
 
     price
 }
+
+#[cfg(test)]
+mod tests {
+    use crate::constants::bonk::accounts::{PLATFORM_FEE_RATE, PROTOCOL_FEE_RATE, SHARE_FEE_RATE};
+
+    use super::*;
+
+    #[test]
+    fn test_amount_in_out_consistency() {
+        // 测试参数
+        let protocol_fee_rate = PROTOCOL_FEE_RATE;
+        let platform_fee_rate = PLATFORM_FEE_RATE;
+        let share_fee_rate = SHARE_FEE_RATE;
+        let virtual_base = 1073025605596382;
+        let virtual_quote = 30000852951;
+        let real_base = 0;
+        let real_quote = 0;
+        let slippage_basis_points = 0;
+
+        let original_amount_in = 2000000000;
+
+        let geet_amount_out_result = get_amount_out(
+            original_amount_in,
+            protocol_fee_rate,
+            platform_fee_rate,
+            share_fee_rate,
+            virtual_base,
+            virtual_quote,
+            real_base,
+            real_quote,
+            slippage_basis_points,
+        );
+
+        let amount_out = 25959582643397;
+        let get_amount_in_result = get_amount_in(
+            amount_out,
+            protocol_fee_rate,
+            platform_fee_rate,
+            share_fee_rate,
+            virtual_base,
+            virtual_quote,
+            real_base,
+            real_quote,
+            slippage_basis_points,
+        );
+
+        println!("Original amount_in: {}", original_amount_in);
+        println!("Amount_out: {}", geet_amount_out_result);
+        println!("Calculated amount_in: {}", get_amount_in_result);
+
+        assert!(geet_amount_out_result == 66275810509273);
+        assert!(get_amount_in_result == 753217040);
+    }
+}

src/trading/core/params.rs

@@ -5,7 +5,11 @@ use std::sync::Arc;
 use super::traits::ProtocolParams;
 use crate::common::bonding_curve::BondingCurveAccount;
 use crate::common::{PriorityFee, SolanaRpcClient};
+use crate::constants::bonk::accounts::{PLATFORM_FEE_RATE, PROTOCOL_FEE_RATE, SHARE_FEE_RATE};
+use crate::streaming::event_parser::common::EventType;
+use crate::streaming::event_parser::protocols::bonk::BonkTradeEvent;
 use crate::swqos::SwqosClient;
+use crate::trading::bonk::common::{get_amount_in, get_amount_in_net, get_amount_out};
 
 /// 通用买入参数
 #[derive(Clone)]
@@ -141,6 +145,64 @@ impl BonkParams {
             auto_handle_wsol: true,
         }
     }
+    pub fn from_trade(trade_info: BonkTradeEvent) -> Self {
+        Self {
+            virtual_base: Some(trade_info.virtual_base as u128),
+            virtual_quote: Some(trade_info.virtual_quote as u128),
+            real_base: Some(trade_info.real_base_after as u128),
+            real_quote: Some(trade_info.real_quote_after as u128),
+            auto_handle_wsol: true,
+        }
+    }
+
+    pub fn from_dev_trade(trade_info: BonkTradeEvent) -> Self {
+        const DEFAULT_VIRTUAL_BASE: u128 = 1073025605596382;
+        const DEFAULT_VIRTUAL_QUOTE: u128 = 30000852951;
+        let amount_in = if trade_info.metadata.event_type == EventType::BonkBuyExactIn {
+            trade_info.amount_in
+        } else {
+            get_amount_in(
+                trade_info.amount_out,
+                PROTOCOL_FEE_RATE,
+                PLATFORM_FEE_RATE,
+                SHARE_FEE_RATE,
+                DEFAULT_VIRTUAL_BASE,
+                DEFAULT_VIRTUAL_QUOTE,
+                0,
+                0,
+                0,
+            )
+        };
+        let real_quote = get_amount_in_net(
+            amount_in,
+            PROTOCOL_FEE_RATE,
+            PLATFORM_FEE_RATE,
+            SHARE_FEE_RATE,
+        ) as u128;
+        let amount_out = if trade_info.metadata.event_type == EventType::BonkBuyExactIn {
+            get_amount_out(
+                trade_info.amount_in,
+                PROTOCOL_FEE_RATE,
+                PLATFORM_FEE_RATE,
+                SHARE_FEE_RATE,
+                DEFAULT_VIRTUAL_BASE,
+                DEFAULT_VIRTUAL_QUOTE,
+                0,
+                0,
+                0,
+            ) as u128
+        } else {
+            trade_info.amount_out as u128
+        };
+        let real_base = amount_out;
+        Self {
+            virtual_base: Some(DEFAULT_VIRTUAL_BASE),
+            virtual_quote: Some(DEFAULT_VIRTUAL_QUOTE),
+            real_base: Some(real_base),
+            real_quote: Some(real_quote),
+            auto_handle_wsol: true,
+        }
+    }
 }
 
 impl ProtocolParams for BonkParams {