From 4951b6733b6a937e7e20c777bfa383791faab3bc Mon Sep 17 00:00:00 2001
From: Georges KABBOUCHI <georges.kabbouchi@gmail.com>
Date: Sun, 22 Aug 2021 14:27:02 +0300
Subject: [PATCH] wip

---
 core/strategies/helpers/strategy.ts           | 49 +++++++++++++++++++
 core/strategies/index.ts                      |  5 ++
 .../protocols/aave-v2/deposit-and-borrow.ts   | 49 +++++++++++++++++++
 core/strategies/protocols/aave-v2/index.ts    |  6 +++
 4 files changed, 109 insertions(+)
 create mode 100644 core/strategies/helpers/strategy.ts
 create mode 100644 core/strategies/index.ts
 create mode 100644 core/strategies/protocols/aave-v2/deposit-and-borrow.ts
 create mode 100644 core/strategies/protocols/aave-v2/index.ts

diff --git a/core/strategies/helpers/strategy.ts b/core/strategies/helpers/strategy.ts
new file mode 100644
index 0000000..79cf986
--- /dev/null
+++ b/core/strategies/helpers/strategy.ts
@@ -0,0 +1,49 @@
+import DSA from "dsa-connect";
+import Web3 from "web3";
+
+export interface IStrategyContext {
+  dsa: typeof DSA;
+  web3: Web3;
+  inputs: IStrategyInput[];
+}
+
+export interface IStrategyToken {
+  address: string
+  key: string
+  symbol: string
+  balance: string
+
+  supply: string
+  borrow: string
+}
+
+export enum StrategyInputType {
+  INPUT = "input",
+  INPUT_WITH_TOKEN = "input-with-token"
+}
+
+export interface IStrategyInput {
+  type: StrategyInputType;
+  name: string;
+  placeholder:
+    | string
+    | ((context: IStrategyContext & { input: IStrategyInput }) => string);
+  validate?: ((context: IStrategyContext & { input: IStrategyInput }) => boolean|string);
+  // If type is "input-with-token", this is the token
+  token?: IStrategyToken;
+  value?: any;
+}
+
+export interface IStrategy {
+  name: string;
+  description: string;
+  author?: string;
+
+  inputs: IStrategyInput[];
+
+  spells: (context: IStrategyContext) => any;
+}
+
+export function defineStrategy(strategy: IStrategy): IStrategy {
+  return strategy;
+}
diff --git a/core/strategies/index.ts b/core/strategies/index.ts
new file mode 100644
index 0000000..47e70d5
--- /dev/null
+++ b/core/strategies/index.ts
@@ -0,0 +1,5 @@
+import AaveV2 from "./protocols/aave-v2"
+
+export const strategies = {
+    aaveV2 : AaveV2,
+}
\ No newline at end of file
diff --git a/core/strategies/protocols/aave-v2/deposit-and-borrow.ts b/core/strategies/protocols/aave-v2/deposit-and-borrow.ts
new file mode 100644
index 0000000..76582c6
--- /dev/null
+++ b/core/strategies/protocols/aave-v2/deposit-and-borrow.ts
@@ -0,0 +1,49 @@
+import { defineStrategy, StrategyInputType } from "../../helpers/strategy";
+
+export default defineStrategy({
+  name: "Deposit & Borrow",
+  description: "Deposit collateral & borrow asset in a single txn.",
+  author: "Instadapp Team",
+
+  inputs: [
+    {
+      type: StrategyInputType.INPUT_WITH_TOKEN,
+      name: "Debt",
+      placeholder: ({ input }) => `${input.token.symbol} to Payback`,
+      validate: ({ input }) => {
+        if (!input.token) {
+          return "Token is required";
+        }
+
+        if (input.token.balance < input.value) {
+            return "Your amount exceeds your maximum limit.";
+          }
+
+        return true;
+      }
+    },
+    {
+      type: StrategyInputType.INPUT_WITH_TOKEN,
+      name: "Collateral",
+      placeholder: ({ input }) => `${input.token.symbol} to Withdraw`
+    }
+  ],
+
+  spells: async ({ dsa, inputs }) => {
+    const spells = dsa.Spells();
+
+    spells.add({
+      connector: "aave_v2",
+      method: "deposit",
+      args: [inputs[0].token.address, inputs[0].value, 0, 0]
+    });
+
+    spells.add({
+      connector: "aave_v2",
+      method: "borrow",
+      args: [inputs[1].token.address, inputs[1].value, 0, 0, 0]
+    });
+
+    return spells;
+  }
+});
diff --git a/core/strategies/protocols/aave-v2/index.ts b/core/strategies/protocols/aave-v2/index.ts
new file mode 100644
index 0000000..f6bac2d
--- /dev/null
+++ b/core/strategies/protocols/aave-v2/index.ts
@@ -0,0 +1,6 @@
+import depositAndBorrow from "./deposit-and-borrow"
+
+export default [
+    depositAndBorrow
+]
+  
\ No newline at end of file