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50ca514 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 | import Portfolio from '../model/PracticeZoneModel.js';
import User from '../model/UserModel.js';
export const initializePortfolio = async (req, res) => {
try {
const userId = req.userId; // From your auth middleware
// Check if portfolio exists
let portfolio = await Portfolio.findOne({ userId });
if (!portfolio) {
// Create new portfolio with initial balance
portfolio = await Portfolio.create({
userId,
balance: 10000,
stocks: [],
transactions: []
});
}
res.json(portfolio);
} catch (error) {
res.status(500).json({ error: error.message });
}
};
export const getPortfolio = async (req, res) => {
try {
const userId = req.userId;
const portfolio = await Portfolio.findOne({ userId });
if (!portfolio) {
return res.status(404).json({ error: "Portfolio not found" });
}
res.json(portfolio);
} catch (error) {
res.status(500).json({ error: error.message });
}
};
export const buyStock = async (req, res) => {
try {
const userId = req.userId;
const { code, quantity, price } = req.body;
// Input validation
if (!code || !quantity || !price) {
return res.status(400).json({ error: "Missing required fields" });
}
if (quantity <= 0 || price <= 0) {
return res.status(400).json({ error: "Invalid quantity or price" });
}
let portfolio = await Portfolio.findOne({ userId });
if (!portfolio) {
return res.status(404).json({ error: "Portfolio not found" });
}
const totalCost = price * quantity;
if (portfolio.balance < totalCost) {
return res.status(400).json({ error: "Insufficient balance" });
}
// Find existing stock or create new entry
const stockIndex = portfolio.stocks.findIndex(s => s.code === code.toUpperCase());
if (stockIndex >= 0) {
const existingStock = portfolio.stocks[stockIndex];
const newQuantity = existingStock.quantity + quantity;
const newAvgPrice = ((existingStock.avgPrice * existingStock.quantity) + (price * quantity)) / newQuantity;
portfolio.stocks[stockIndex].quantity = newQuantity;
portfolio.stocks[stockIndex].avgPrice = newAvgPrice;
} else {
portfolio.stocks.push({
code: code.toUpperCase(),
quantity,
avgPrice: price
});
}
// Update balance and add transaction
portfolio.balance -= totalCost;
portfolio.transactions.push({
type: "BUY",
code: code.toUpperCase(),
quantity,
price,
timestamp: new Date()
});
await portfolio.save();
res.json(portfolio);
} catch (error) {
res.status(500).json({ error: error.message });
}
};
export const sellStock = async (req, res) => {
try {
const userId = req.userId;
const { code, quantity, price } = req.body;
// Input validation
if (!code || !quantity || !price) {
return res.status(400).json({ error: "Missing required fields" });
}
if (quantity <= 0 || price <= 0) {
return res.status(400).json({ error: "Invalid quantity or price" });
}
let portfolio = await Portfolio.findOne({ userId });
if (!portfolio) {
return res.status(404).json({ error: "Portfolio not found" });
}
const stock = portfolio.stocks.find(s => s.code === code.toUpperCase());
if (!stock || stock.quantity < quantity) {
return res.status(400).json({ error: "Insufficient stock quantity" });
}
// Update stock quantity
stock.quantity -= quantity;
const saleAmount = price * quantity;
// Remove stock if quantity becomes 0
if (stock.quantity === 0) {
portfolio.stocks = portfolio.stocks.filter(s => s.code !== code.toUpperCase());
}
// Update balance and add transaction
portfolio.balance += saleAmount;
portfolio.transactions.push({
type: "SELL",
code: code.toUpperCase(),
quantity,
price,
timestamp: new Date()
});
await portfolio.save();
res.json(portfolio);
} catch (error) {
res.status(500).json({ error: error.message });
}
};
// Add helper function to calculate portfolio statistics
export const getPortfolioStats = async (req, res) => {
try {
const userId = req.userId;
const portfolio = await Portfolio.findOne({ userId });
if (!portfolio) {
return res.status(404).json({ error: "Portfolio not found" });
}
// Calculate total investment value
const totalInvestment = portfolio.stocks.reduce((total, stock) => {
return total + (stock.quantity * stock.avgPrice);
}, 0);
// Calculate number of different stocks
const numberOfStocks = portfolio.stocks.length;
// Get latest transaction
const latestTransaction = portfolio.transactions[portfolio.transactions.length - 1];
const stats = {
totalInvestment,
availableBalance: portfolio.balance,
numberOfStocks,
latestTransaction,
totalPortfolioValue: totalInvestment + portfolio.balance
};
res.json(stats);
} catch (error) {
res.status(500).json({ error: error.message });
}
}; |