from django.shortcuts import render, redirect, get_object_or_404 from django.contrib.auth.decorators import login_required from django.contrib.auth import login, authenticate from django.contrib.auth.forms import UserCreationForm, AuthenticationForm from django.http import JsonResponse from django.contrib.auth.models import User from django.contrib import messages from .models import Account, Order, Transaction, Cryptocurrency, SiteSettings, Asset, Position import random import decimal import json from django.views.decorators.csrf import csrf_exempt from django.db import transaction def index(request): return render(request, 'core/index.html') def trade(request, trade_type='spot'): symbol = request.GET.get('symbol', 'BTCUSDT') base_symbol = symbol.replace('USDT', '') cryptos = Cryptocurrency.objects.filter(is_active=True) account = None assets = {} base_asset_balance = decimal.Decimal('0') if request.user.is_authenticated: account, _ = Account.objects.get_or_create(user=request.user) for asset in account.assets.all(): assets[asset.currency] = asset if asset.currency == base_symbol: base_asset_balance = asset.balance context = { 'symbol': symbol, 'base_symbol': base_symbol, 'trade_type': trade_type.upper(), 'cryptos': cryptos, 'account': account, 'assets': assets, 'base_asset_balance': base_asset_balance, } return render(request, 'core/trade.html', context) def market_center(request): cryptos = Cryptocurrency.objects.filter(is_active=True) return render(request, 'core/market_center.html', {'cryptos': cryptos}) def placeholder_view(request, title): settings = SiteSettings.objects.first() if title == '服务条款': content = settings.terms_content if settings and settings.terms_content else '暂无服务条款内容。' elif title == '隐私政策': content = settings.privacy_content if settings and settings.privacy_content else '暂无隐私政策内容。' else: contents = { '帮助中心': '欢迎来到 BitCrypto 帮助中心。在这里您可以找到关于账户设置、资产充提、交易指南等所有问题的答案。我们为您准备了详尽的视频教程和图文说明，帮助您快速上手。', '技术支持': 'BitCrypto 技术支持团队 24/7 在线。如果您遇到任何 API 对接、系统报错或连接问题，请随时联系我们的工程师。我们承诺在 15 分钟内给予首次回复。', '提交请求': '请在下方表单提交您的需求或反馈。无论是工单申请、投诉建议还是商务合作，我们都会认真对待。您的每一份反馈都是我们前进的动力。', '公告中心': '查看 BitCrypto 最新动态。包括新币上线通知、系统维护公告、市场活动资讯等。订阅我们的邮件列表，第一时间获取核心商业情报。', } content = contents.get(title, f'这是{title}的详细内容。BitCrypto为您提供最优质的服务。') faqs = [ {'q': '如何进行身份认证？', 'a': '登录后在个人中心点击身份认证，上传身份证件并完成人脸识别即可。'}, {'q': '充值多久能到账？', 'a': '区块链网络确认后自动到账，通常 5-30 分钟。'}, {'q': '手续费是多少？', 'a': '现货交易基础手续费为 0.1%，使用平台币抵扣可享 7.5 折优惠。'}, ] return render(request, 'core/article_detail.html', { 'title': title, 'content': content, 'faqs': faqs if title == '帮助中心' else None }) @login_required def profile(request): account, created = Account.objects.get_or_create(user=request.user) recent_transactions = Transaction.objects.filter(account=account).order_by('-timestamp')[:10] recent_orders = Order.objects.filter(account=account).order_by('-created_at')[:10] positions = Position.objects.filter(account=account, is_active=True) context = { 'account': account, 'recent_transactions': recent_transactions, 'recent_orders': recent_orders, 'positions': positions, } return render(request, 'core/profile.html', context) @login_required def deposit(request): if request.method == 'POST': amount = request.POST.get('amount') tx_id = request.POST.get('tx_id') if amount and tx_id: account = request.user.account Transaction.objects.create( account=account, transaction_type='deposit', amount=decimal.Decimal(amount), status='pending', tx_hash=tx_id ) return redirect('core:profile') return render(request, 'core/deposit.html') @login_required def withdraw(request): account = request.user.account if request.method == 'POST': amount = request.POST.get('amount') address = request.POST.get('address') if amount and address: amount_dec = decimal.Decimal(amount) if account.balance >= amount_dec: account.balance -= amount_dec account.save() Transaction.objects.create( account=account, transaction_type='withdraw', amount=amount_dec, status='completed', tx_hash=f"wd_{random.randint(1000, 9999)}" ) return redirect('core:profile') return render(request, 'core/withdraw.html', {'account': account}) @login_required def verify(request): account = request.user.account if request.method == 'POST': account.kyc_status = 'pending' account.save() return redirect('core:profile') return render(request, 'core/verify.html', {'account': account}) def register_view(request): if request.method == 'POST': username = request.POST.get('username') password = request.POST.get('password') password_confirm = request.POST.get('password_confirm') captcha_input = request.POST.get('captcha_input') captcha_expected = request.session.get('captcha_result') if password != password_confirm: messages.error(request, "两次输入的密码不一致") elif str(captcha_input) != str(captcha_expected): messages.error(request, "验证码错误") elif User.objects.filter(username=username).exists(): messages.error(request, "用户名已存在") else: user = User.objects.create_user(username=username, password=password) Account.objects.get_or_create(user=user) login(request, user) return redirect('core:index') captcha_text, captcha_result = generate_captcha() request.session['captcha_result'] = captcha_result return render(request, 'core/register.html', { 'captcha_text': captcha_text }) def generate_captcha(): a = random.randint(1, 10) b = random.randint(1, 10) op = random.choice(['+', '-', '*']) if op == '+': res = a + b elif op == '-': res = a - b else: res = a * b return f"{a} {op} {b} = ?", res def login_view(request): if request.method == 'POST': form = AuthenticationForm(data=request.POST) if form.is_valid(): user = form.get_user() login(request, user) return redirect('core:index') else: form = AuthenticationForm() return render(request, 'core/login.html', {'form': form}) @login_required @csrf_exempt def submit_order(request): if request.method != 'POST': return JsonResponse({'status': 'error', 'message': 'Invalid request'}) try: data = json.loads(request.body) symbol = data.get('symbol', 'BTCUSDT') side = data.get('side') # BUY or SELL trade_type = data.get('trade_type', 'SPOT') order_type = data.get('order_type', 'MARKET') price_val = data.get('price') amount_val = data.get('amount', 0) leverage = int(data.get('leverage', 20)) account = request.user.account base_symbol = symbol.replace('USDT', '') # Get current market price for validations and market orders crypto = Cryptocurrency.objects.filter(symbol=base_symbol).first() current_price = crypto.current_price if (crypto and crypto.current_price > 0) else decimal.Decimal('48000') with transaction.atomic(): if trade_type == 'SPOT': if order_type == 'MARKET': # Spot Market Order: Execute Immediately if side == 'BUY': # BUY: amount_val is USDT total_usdt = decimal.Decimal(str(amount_val)) if account.balance < total_usdt: return JsonResponse({'status': 'error', 'message': '余额不足'}) exec_amount = total_usdt / current_price account.balance -= total_usdt account.save() asset, _ = Asset.objects.get_or_create(account=account, currency=base_symbol) asset.balance += exec_amount asset.save() Order.objects.create( account=account, symbol=symbol, side=side, order_type=order_type, trade_type=trade_type, amount=exec_amount, total_usdt=total_usdt, status='FILLED' ) else: # SELL # SELL: amount_val is coin quantity exec_amount = decimal.Decimal(str(amount_val)) asset, _ = Asset.objects.get_or_create(account=account, currency=base_symbol) if asset.balance < exec_amount: return JsonResponse({'status': 'error', 'message': f'{base_symbol} 余额不足'}) total_usdt = exec_amount * current_price asset.balance -= exec_amount asset.save() account.balance += total_usdt account.save() Order.objects.create( account=account, symbol=symbol, side=side, order_type=order_type, trade_type=trade_type, amount=exec_amount, total_usdt=total_usdt, status='FILLED' ) else: # LIMIT # Spot Limit Order: Freeze Assets, Pend price = decimal.Decimal(str(price_val)) amount = decimal.Decimal(str(amount_val)) if side == 'BUY': total_usdt = price * amount if account.balance < total_usdt: return JsonResponse({'status': 'error', 'message': '余额不足'}) account.balance -= total_usdt account.frozen_balance += total_usdt account.save() Order.objects.create( account=account, symbol=symbol, side=side, order_type=order_type, trade_type=trade_type, amount=amount, price=price, total_usdt=total_usdt, status='PENDING' ) else: # SELL asset, _ = Asset.objects.get_or_create(account=account, currency=base_symbol) if asset.balance < amount: return JsonResponse({'status': 'error', 'message': f'{base_symbol} 余额不足'}) asset.balance -= amount asset.frozen += amount asset.save() Order.objects.create( account=account, symbol=symbol, side=side, order_type=order_type, trade_type=trade_type, amount=amount, price=price, status='PENDING' ) else: # CONTRACT # Contract: Initial Margin = face_value(100) * lots / leverage lots = decimal.Decimal(str(amount_val)) face_value = decimal.Decimal('100') margin_required = (face_value * lots) / decimal.Decimal(str(leverage)) if account.balance < margin_required: return JsonResponse({'status': 'error', 'message': '保证金不足'}) if order_type == 'MARKET': # Contract Market Order: Immediate Open Position account.balance -= margin_required account.save() Position.objects.create( account=account, symbol=symbol, side='LONG' if side == 'BUY' else 'SHORT', leverage=leverage, entry_price=current_price, lots=lots, margin=margin_required ) Order.objects.create( account=account, symbol=symbol, side=side, order_type=order_type, trade_type=trade_type, amount=lots, leverage=leverage, status='FILLED' ) else: # LIMIT # Contract Limit Order: Freeze Margin, Pend price = decimal.Decimal(str(price_val)) account.balance -= margin_required account.frozen_balance += margin_required account.save() Order.objects.create( account=account, symbol=symbol, side=side, order_type=order_type, trade_type=trade_type, amount=lots, price=price, leverage=leverage, status='PENDING' ) return JsonResponse({'status': 'success'}) except Exception as e: return JsonResponse({'status': 'error', 'message': str(e)}) @login_required @csrf_exempt def close_position(request, position_id): if request.method != 'POST': return JsonResponse({'status': 'error', 'message': 'Invalid request'}) position = get_object_or_404(Position, id=position_id, account=request.user.account, is_active=True) base_symbol = position.symbol.replace('USDT', '') crypto = Cryptocurrency.objects.filter(symbol=base_symbol).first() current_price = crypto.current_price if (crypto and crypto.current_price > 0) else decimal.Decimal('48000') face_value = decimal.Decimal('100') # Calculate Unrealized P&L if position.side == 'LONG': upl = (current_price - position.entry_price) / position.entry_price * (position.lots * face_value) else: upl = (position.entry_price - current_price) / position.entry_price * (position.lots * face_value) with transaction.atomic(): account = request.user.account # Settlement: Margin + P&L - Fee (0.05%) fee = (position.lots * face_value) * decimal.Decimal('0.0005') account.balance += (position.margin + upl - fee) account.save() position.is_active = False position.save() # Log closing order Order.objects.create( account=account, symbol=position.symbol, side='SELL' if position.side == 'LONG' else 'BUY', order_type='MARKET', trade_type='CONTRACT', amount=position.lots, status='FILLED' ) return JsonResponse({'status': 'success'}) def market_data(request): cryptos = Cryptocurrency.objects.filter(is_active=True) data = [] for c in cryptos: data.append({ 'symbol': c.symbol, 'price': float(c.current_price), 'change': float(c.change_24h) }) return JsonResponse(data, safe=False)