feat: implemented advanced Defi/AMM contracts

Cargo.toml

@@ -3,7 +3,13 @@ resolver = "2"
 members = [
   "contracts/tbrg-token",
   "contracts/oracle",
-  "contracts/pool-factory"
+  "contracts/pool-factory",
+  "contracts/amm",
+  "contracts/liquidity-mining",
+  "contracts/synthetic-asset-factory",
+  "contracts/options",
+  "contracts/yield-strategy",
+  "contracts/flash-loan-router"
 ]
 
 exclude = [

contracts/amm/Cargo.toml

@@ -0,0 +1,13 @@
+[package]
+name = "amm"
+version = "0.1.0"
+edition = "2021"
+authors = ["TrustBridge Team"]
+
+[lib]
+crate-type = ["cdylib"]
+
+[dependencies]
+soroban-sdk = { workspace = true }
+
+

contracts/amm/src/errors.rs

@@ -0,0 +1,21 @@
+use soroban_sdk::contracterror;
+
+#[contracterror]
+#[derive(Copy, Clone, Debug, Eq, PartialEq, PartialOrd, Ord)]
+#[repr(u32)]
+pub enum AmmError {
+    /// Invalid token amount provided
+    InvalidAmount = 1,
+    /// Slippage tolerance exceeded
+    SlippageExceeded = 2,
+    /// Invalid token address
+    InvalidToken = 3,
+    /// Insufficient liquidity in pool
+    InsufficientLiquidity = 4,
+    /// Insufficient LP shares
+    InsufficientShares = 5,
+    /// Invalid token ordering
+    InvalidTokenOrder = 6,
+    /// Invalid fee rate
+    InvalidFeeRate = 7,
+}

contracts/amm/src/events.rs

@@ -0,0 +1,29 @@
+use soroban_sdk::{contracttype, Address};
+
+#[contracttype]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct DepositEvent {
+    pub depositor: Address,
+    pub amount_a: i128,
+    pub amount_b: i128,
+    pub shares: i128,
+}
+
+#[contracttype]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct WithdrawEvent {
+    pub withdrawer: Address,
+    pub shares: i128,
+    pub amount_a: i128,
+    pub amount_b: i128,
+}
+
+#[contracttype]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct SwapEvent {
+    pub from: Address,
+    pub sell_token: Address,
+    pub sell_amount: i128,
+    pub buy_token: Address,
+    pub buy_amount: i128,
+}