{
 "cells": [
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "# Uniswap V2 Tutorial\n",
    "\n",
    "This tutorial shows how to use Uniswap V2 with Dexsnake. Let's start by connecting to the blockchain (here, we use [Base](https://www.base.org/) for its relatively low transaction fees)."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 1,
   "metadata": {},
   "outputs": [],
   "source": [
    "import os\n",
    "\n",
    "from web3 import Web3\n",
    "\n",
    "\n",
    "# the code below assumes you have configured the required environment variables\n",
    "account = os.getenv(\"WEB3_PUBLIC_KEY\")\n",
    "private_key = os.getenv(\"WEB3_PRIVATE_KEY\")\n",
    "provider_url = os.getenv(\"WEB3_PROVIDER_URL\")\n",
    "\n",
    "web3 = Web3(Web3.HTTPProvider(provider_url))"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Now, let's import `UniswapV2Factory` and find the pair with USDC and WETH."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "0x88A43bbDF9D098eEC7bCEda4e2494615dfD9bB9C\n"
     ]
    }
   ],
   "source": [
    "from dexsnake.uniswap_v2 import UniswapV2Factory\n",
    "\n",
    "\n",
    "factory = UniswapV2Factory(web3)\n",
    "\n",
    "USDC_address = \"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913\"\n",
    "WETH_address = \"0x4200000000000000000000000000000000000006\"\n",
    "\n",
    "pair_address = factory.get_pair(USDC_address, WETH_address)\n",
    "\n",
    "print(pair_address)"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Now, let's initialize the pair object and fetch the pair's reserves and price."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Reserves of WETH: 440.61604517871905\n",
      "Reserves of USDC: 1139872.568688\n",
      "Price of 1 WETH: 2586.9974122836456 USDC\n"
     ]
    }
   ],
   "source": [
    "from dexsnake.uniswap_v2 import UniswapV2Pair\n",
    "\n",
    "\n",
    "pair = UniswapV2Pair(web3, pair_address)\n",
    "\n",
    "reserves_0, reserves_1 = pair.get_reserves()\n",
    "\n",
    "price = pair.get_price()\n",
    "\n",
    "print(f\"Reserves of {pair.token_0.symbol}: {reserves_0}\")\n",
    "print(f\"Reserves of {pair.token_1.symbol}: {reserves_1}\")\n",
    "print(f\"Price of 1 {pair.token_0.symbol}: {price} {pair.token_1.symbol}\")"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Now that we know the pair has good liquidity at a good price, let's use the router to swap one USDC for WETH. Note that before you can make the trade, you must approve the router contract to spend your USDC."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 4,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "AttributeDict({'blockHash': HexBytes('0x29e248dd6d22b55343c5a9d6405d142093629b7be675cab5e7ae857f11ec23f0'),\n",
       " 'blockNumber': 18640731,\n",
       " 'contractAddress': None,\n",
       " 'cumulativeGasUsed': 4174043,\n",
       " 'effectiveGasPrice': 5355749,\n",
       " 'from': '0x011b7DD4cAA8E48FbBaef548dB349dfB3D09aA3F',\n",
       " 'gasUsed': 110559,\n",
       " 'l1BaseFeeScalar': '0x8dd',\n",
       " 'l1BlobBaseFee': '0x1',\n",
       " 'l1BlobBaseFeeScalar': '0x101c12',\n",
       " 'l1Fee': '0x224dcb614',\n",
       " 'l1GasPrice': '0x686a9e2a',\n",
       " 'l1GasUsed': '0x90c',\n",
       " 'logs': [AttributeDict({'address': '0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913',\n",
       "   'topics': [HexBytes('0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef'),\n",
       "    HexBytes('0x000000000000000000000000011b7dd4caa8e48fbbaef548db349dfb3d09aa3f'),\n",
       "    HexBytes('0x00000000000000000000000088a43bbdf9d098eec7bceda4e2494615dfd9bb9c')],\n",
       "   'data': HexBytes('0x00000000000000000000000000000000000000000000000000000000000f4240'),\n",
       "   'blockNumber': 18640731,\n",
       "   'transactionHash': HexBytes('0x35b8a3e88b00143a79a1c8883938ce37f4ac23a848c774f7604520daea003b6c'),\n",
       "   'transactionIndex': 38,\n",
       "   'blockHash': HexBytes('0x29e248dd6d22b55343c5a9d6405d142093629b7be675cab5e7ae857f11ec23f0'),\n",
       "   'logIndex': 102,\n",
       "   'removed': False}),\n",
       "  AttributeDict({'address': '0x4200000000000000000000000000000000000006',\n",
       "   'topics': [HexBytes('0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef'),\n",
       "    HexBytes('0x00000000000000000000000088a43bbdf9d098eec7bceda4e2494615dfd9bb9c'),\n",
       "    HexBytes('0x000000000000000000000000011b7dd4caa8e48fbbaef548db349dfb3d09aa3f')],\n",
       "   'data': HexBytes('0x00000000000000000000000000000000000000000000000000015f2cb61aeba9'),\n",
       "   'blockNumber': 18640731,\n",
       "   'transactionHash': HexBytes('0x35b8a3e88b00143a79a1c8883938ce37f4ac23a848c774f7604520daea003b6c'),\n",
       "   'transactionIndex': 38,\n",
       "   'blockHash': HexBytes('0x29e248dd6d22b55343c5a9d6405d142093629b7be675cab5e7ae857f11ec23f0'),\n",
       "   'logIndex': 103,\n",
       "   'removed': False}),\n",
       "  AttributeDict({'address': '0x88A43bbDF9D098eEC7bCEda4e2494615dfD9bB9C',\n",
       "   'topics': [HexBytes('0x1c411e9a96e071241c2f21f7726b17ae89e3cab4c78be50e062b03a9fffbbad1')],\n",
       "   'data': HexBytes('0x000000000000000000000000000000000000000000000017e8959c6f95181adc00000000000000000000000000000000000000000000000000000109256a9c99'),\n",
       "   'blockNumber': 18640731,\n",
       "   'transactionHash': HexBytes('0x35b8a3e88b00143a79a1c8883938ce37f4ac23a848c774f7604520daea003b6c'),\n",
       "   'transactionIndex': 38,\n",
       "   'blockHash': HexBytes('0x29e248dd6d22b55343c5a9d6405d142093629b7be675cab5e7ae857f11ec23f0'),\n",
       "   'logIndex': 104,\n",
       "   'removed': False}),\n",
       "  AttributeDict({'address': '0x88A43bbDF9D098eEC7bCEda4e2494615dfD9bB9C',\n",
       "   'topics': [HexBytes('0xd78ad95fa46c994b6551d0da85fc275fe613ce37657fb8d5e3d130840159d822'),\n",
       "    HexBytes('0x0000000000000000000000004752ba5dbc23f44d87826276bf6fd6b1c372ad24'),\n",
       "    HexBytes('0x000000000000000000000000011b7dd4caa8e48fbbaef548db349dfb3d09aa3f')],\n",
       "   'data': HexBytes('0x000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000f424000000000000000000000000000000000000000000000000000015f2cb61aeba90000000000000000000000000000000000000000000000000000000000000000'),\n",
       "   'blockNumber': 18640731,\n",
       "   'transactionHash': HexBytes('0x35b8a3e88b00143a79a1c8883938ce37f4ac23a848c774f7604520daea003b6c'),\n",
       "   'transactionIndex': 38,\n",
       "   'blockHash': HexBytes('0x29e248dd6d22b55343c5a9d6405d142093629b7be675cab5e7ae857f11ec23f0'),\n",
       "   'logIndex': 105,\n",
       "   'removed': False})],\n",
       " 'logsBloom': HexBytes('0x00200000000000000000000080000000000000000000000000040000000000000000000000200000000000100000100000000000000000000002000000000000000000000008000400000008000000202000000000080000000000000000000400800020000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000002100080000004000000000000000000000000000000000000000000000000000000000000000000000000000000002000100400000000000000000000000000000001000000000000008000000000100000000000000000000000000000000000000000000000000000000'),\n",
       " 'status': 1,\n",
       " 'to': '0x4752ba5DBc23f44D87826276BF6Fd6b1C372aD24',\n",
       " 'transactionHash': HexBytes('0x35b8a3e88b00143a79a1c8883938ce37f4ac23a848c774f7604520daea003b6c'),\n",
       " 'transactionIndex': 38,\n",
       " 'type': 0})"
      ]
     },
     "execution_count": 4,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "from dexsnake.uniswap_v2 import UniswapV2Router\n",
    "\n",
    "\n",
    "router = UniswapV2Router(web3)\n",
    "\n",
    "tx_receipt_approval = pair.token_1.approve(router.contract.address, 1, account, private_key)\n",
    "\n",
    "tx_receipt_swap = router.swap_exact_tokens_for_tokens(\n",
    "    amount_in=1,\n",
    "    amount_out_min=1 / price * 0.99,  # max 1% slippage\n",
    "    path=[USDC_address, WETH_address],\n",
    "    to=account,\n",
    "    account=account,\n",
    "    private_key=private_key,\n",
    ")\n",
    "\n",
    "tx_receipt_swap"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "You can inspect the transaction on the block explorer: https://basescan.org/tx/0x35b8a3e88b00143a79a1c8883938ce37f4ac23a848c774f7604520daea003b6c."
   ]
  }
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