Initial commit: PriceGhost price tracking application

Full-stack application for tracking product prices:
- Backend: Node.js + Express + TypeScript
- Frontend: React + Vite + TypeScript
- Database: PostgreSQL
- Price scraping with Cheerio
- JWT authentication
- Background price checking with node-cron
- Price history charts with Recharts
- Docker support with docker-compose

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
This commit is contained in:
clucraft 2026-01-20 13:58:13 -05:00
commit 10660e5626
44 changed files with 3662 additions and 0 deletions

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import { useState, FormEvent } from 'react';
import { Link } from 'react-router-dom';
interface AuthFormProps {
mode: 'login' | 'register';
onSubmit: (email: string, password: string) => Promise<void>;
}
export default function AuthForm({ mode, onSubmit }: AuthFormProps) {
const [email, setEmail] = useState('');
const [password, setPassword] = useState('');
const [confirmPassword, setConfirmPassword] = useState('');
const [error, setError] = useState('');
const [isLoading, setIsLoading] = useState(false);
const handleSubmit = async (e: FormEvent) => {
e.preventDefault();
setError('');
if (mode === 'register' && password !== confirmPassword) {
setError('Passwords do not match');
return;
}
if (password.length < 8) {
setError('Password must be at least 8 characters');
return;
}
setIsLoading(true);
try {
await onSubmit(email, password);
} catch (err) {
if (err instanceof Error) {
// eslint-disable-next-line @typescript-eslint/no-explicit-any
const axiosError = err as any;
setError(axiosError.response?.data?.error || 'An error occurred');
} else {
setError('An error occurred');
}
} finally {
setIsLoading(false);
}
};
return (
<div className="auth-form-container">
<style>{`
.auth-form-container {
min-height: 100vh;
display: flex;
align-items: center;
justify-content: center;
padding: 1rem;
}
.auth-form-card {
width: 100%;
max-width: 400px;
background: var(--surface);
border-radius: 1rem;
box-shadow: var(--shadow-lg);
padding: 2rem;
}
.auth-form-header {
text-align: center;
margin-bottom: 2rem;
}
.auth-form-logo {
font-size: 2.5rem;
margin-bottom: 0.5rem;
}
.auth-form-title {
font-size: 1.5rem;
font-weight: 600;
color: var(--text);
}
.auth-form-subtitle {
color: var(--text-muted);
margin-top: 0.25rem;
}
.auth-form-footer {
text-align: center;
margin-top: 1.5rem;
color: var(--text-muted);
}
.auth-form-footer a {
font-weight: 500;
}
`}</style>
<div className="auth-form-card">
<div className="auth-form-header">
<div className="auth-form-logo">👻</div>
<h1 className="auth-form-title">PriceGhost</h1>
<p className="auth-form-subtitle">
{mode === 'login'
? 'Sign in to track prices'
: 'Create your account'}
</p>
</div>
{error && <div className="alert alert-error">{error}</div>}
<form onSubmit={handleSubmit}>
<div className="form-group">
<label htmlFor="email">Email</label>
<input
type="email"
id="email"
value={email}
onChange={(e) => setEmail(e.target.value)}
placeholder="you@example.com"
required
autoComplete="email"
/>
</div>
<div className="form-group">
<label htmlFor="password">Password</label>
<input
type="password"
id="password"
value={password}
onChange={(e) => setPassword(e.target.value)}
placeholder="••••••••"
required
autoComplete={mode === 'login' ? 'current-password' : 'new-password'}
/>
</div>
{mode === 'register' && (
<div className="form-group">
<label htmlFor="confirmPassword">Confirm Password</label>
<input
type="password"
id="confirmPassword"
value={confirmPassword}
onChange={(e) => setConfirmPassword(e.target.value)}
placeholder="••••••••"
required
autoComplete="new-password"
/>
</div>
)}
<button
type="submit"
className="btn btn-primary"
style={{ width: '100%', marginTop: '0.5rem' }}
disabled={isLoading}
>
{isLoading ? (
<span className="spinner" />
) : mode === 'login' ? (
'Sign In'
) : (
'Create Account'
)}
</button>
</form>
<div className="auth-form-footer">
{mode === 'login' ? (
<>
Don't have an account? <Link to="/register">Sign up</Link>
</>
) : (
<>
Already have an account? <Link to="/login">Sign in</Link>
</>
)}
</div>
</div>
</div>
);
}

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import { ReactNode } from 'react';
import { Link, useNavigate } from 'react-router-dom';
import { useAuth } from '../hooks/useAuth';
interface LayoutProps {
children: ReactNode;
}
export default function Layout({ children }: LayoutProps) {
const { user, logout } = useAuth();
const navigate = useNavigate();
const handleLogout = () => {
logout();
navigate('/login');
};
return (
<div className="layout">
<style>{`
.layout {
min-height: 100vh;
display: flex;
flex-direction: column;
}
.navbar {
background: var(--surface);
border-bottom: 1px solid var(--border);
padding: 0 1rem;
position: sticky;
top: 0;
z-index: 100;
}
.navbar-content {
max-width: 1200px;
margin: 0 auto;
height: 64px;
display: flex;
align-items: center;
justify-content: space-between;
}
.navbar-brand {
display: flex;
align-items: center;
gap: 0.5rem;
font-size: 1.25rem;
font-weight: 600;
color: var(--text);
text-decoration: none;
}
.navbar-brand:hover {
text-decoration: none;
color: var(--primary);
}
.navbar-brand-icon {
font-size: 1.5rem;
}
.navbar-user {
display: flex;
align-items: center;
gap: 1rem;
}
.navbar-email {
color: var(--text-muted);
font-size: 0.875rem;
}
.main-content {
flex: 1;
padding: 2rem 1rem;
}
.main-content-inner {
max-width: 1200px;
margin: 0 auto;
}
@media (max-width: 640px) {
.navbar-email {
display: none;
}
}
`}</style>
<nav className="navbar">
<div className="navbar-content">
<Link to="/" className="navbar-brand">
<span className="navbar-brand-icon">👻</span>
<span>PriceGhost</span>
</Link>
{user && (
<div className="navbar-user">
<span className="navbar-email">{user.email}</span>
<button className="btn btn-secondary" onClick={handleLogout}>
Logout
</button>
</div>
)}
</div>
</nav>
<main className="main-content">
<div className="main-content-inner">{children}</div>
</main>
</div>
);
}

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import { useState } from 'react';
import {
LineChart,
Line,
XAxis,
YAxis,
CartesianGrid,
Tooltip,
ResponsiveContainer,
ReferenceLine,
} from 'recharts';
import { PriceHistory } from '../api/client';
interface PriceChartProps {
prices: PriceHistory[];
currency: string;
onRangeChange?: (days: number | undefined) => void;
}
const DATE_RANGES = [
{ value: 7, label: '7 days' },
{ value: 30, label: '30 days' },
{ value: 90, label: '90 days' },
{ value: undefined, label: 'All time' },
];
export default function PriceChart({
prices,
currency,
onRangeChange,
}: PriceChartProps) {
const [selectedRange, setSelectedRange] = useState<number | undefined>(30);
const handleRangeChange = (days: number | undefined) => {
setSelectedRange(days);
onRangeChange?.(days);
};
const currencySymbol =
currency === 'EUR' ? '€' : currency === 'GBP' ? '£' : '$';
const chartData = prices.map((p) => ({
date: new Date(p.recorded_at).getTime(),
price: parseFloat(p.price.toString()),
}));
const minPrice = Math.min(...chartData.map((d) => d.price));
const maxPrice = Math.max(...chartData.map((d) => d.price));
const avgPrice =
chartData.reduce((sum, d) => sum + d.price, 0) / chartData.length;
const formatDate = (timestamp: number) => {
const date = new Date(timestamp);
return date.toLocaleDateString('en-US', { month: 'short', day: 'numeric' });
};
const formatPrice = (value: number) => {
return `${currencySymbol}${value.toFixed(2)}`;
};
if (prices.length === 0) {
return (
<div className="price-chart-empty">
<style>{`
.price-chart-empty {
background: var(--surface);
border-radius: 0.75rem;
padding: 3rem;
text-align: center;
color: var(--text-muted);
}
`}</style>
<p>No price history available yet.</p>
</div>
);
}
return (
<div className="price-chart">
<style>{`
.price-chart {
background: var(--surface);
border-radius: 0.75rem;
padding: 1.5rem;
box-shadow: var(--shadow);
}
.price-chart-header {
display: flex;
justify-content: space-between;
align-items: center;
margin-bottom: 1.5rem;
flex-wrap: wrap;
gap: 1rem;
}
.price-chart-title {
font-size: 1.125rem;
font-weight: 600;
color: var(--text);
}
.price-chart-range {
display: flex;
gap: 0.5rem;
}
.price-chart-range button {
padding: 0.375rem 0.75rem;
border: 1px solid var(--border);
background: var(--surface);
border-radius: 0.375rem;
font-size: 0.875rem;
color: var(--text-muted);
cursor: pointer;
transition: all 0.2s;
}
.price-chart-range button:hover {
border-color: var(--primary);
color: var(--primary);
}
.price-chart-range button.active {
background: var(--primary);
border-color: var(--primary);
color: white;
}
.price-chart-container {
height: 300px;
}
.price-chart-stats {
display: grid;
grid-template-columns: repeat(3, 1fr);
gap: 1rem;
margin-top: 1.5rem;
padding-top: 1.5rem;
border-top: 1px solid var(--border);
}
.price-stat {
text-align: center;
}
.price-stat-label {
font-size: 0.75rem;
color: var(--text-muted);
text-transform: uppercase;
letter-spacing: 0.05em;
}
.price-stat-value {
font-size: 1.25rem;
font-weight: 600;
margin-top: 0.25rem;
}
.price-stat-value.min {
color: var(--secondary);
}
.price-stat-value.max {
color: var(--danger);
}
.price-stat-value.avg {
color: var(--primary);
}
@media (max-width: 640px) {
.price-chart-stats {
grid-template-columns: 1fr;
}
}
`}</style>
<div className="price-chart-header">
<h3 className="price-chart-title">Price History</h3>
<div className="price-chart-range">
{DATE_RANGES.map((range) => (
<button
key={range.label}
className={selectedRange === range.value ? 'active' : ''}
onClick={() => handleRangeChange(range.value)}
>
{range.label}
</button>
))}
</div>
</div>
<div className="price-chart-container">
<ResponsiveContainer width="100%" height="100%">
<LineChart data={chartData}>
<CartesianGrid strokeDasharray="3 3" stroke="#e2e8f0" />
<XAxis
dataKey="date"
tickFormatter={formatDate}
stroke="#94a3b8"
fontSize={12}
/>
<YAxis
tickFormatter={formatPrice}
stroke="#94a3b8"
fontSize={12}
domain={['auto', 'auto']}
/>
<Tooltip
formatter={(value: number) => [formatPrice(value), 'Price']}
labelFormatter={(label) =>
new Date(label).toLocaleDateString('en-US', {
weekday: 'short',
month: 'short',
day: 'numeric',
hour: '2-digit',
minute: '2-digit',
})
}
contentStyle={{
background: 'white',
border: '1px solid #e2e8f0',
borderRadius: '0.5rem',
boxShadow: '0 4px 6px -1px rgba(0, 0, 0, 0.1)',
}}
/>
<ReferenceLine
y={avgPrice}
stroke="#6366f1"
strokeDasharray="5 5"
label=""
/>
<Line
type="monotone"
dataKey="price"
stroke="#6366f1"
strokeWidth={2}
dot={{ fill: '#6366f1', strokeWidth: 0, r: 3 }}
activeDot={{ r: 5, stroke: '#6366f1', strokeWidth: 2, fill: 'white' }}
/>
</LineChart>
</ResponsiveContainer>
</div>
<div className="price-chart-stats">
<div className="price-stat">
<div className="price-stat-label">Lowest</div>
<div className="price-stat-value min">{formatPrice(minPrice)}</div>
</div>
<div className="price-stat">
<div className="price-stat-label">Average</div>
<div className="price-stat-value avg">{formatPrice(avgPrice)}</div>
</div>
<div className="price-stat">
<div className="price-stat-label">Highest</div>
<div className="price-stat-value max">{formatPrice(maxPrice)}</div>
</div>
</div>
</div>
);
}

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import { Link } from 'react-router-dom';
import { Product } from '../api/client';
interface ProductCardProps {
product: Product;
onDelete: (id: number) => void;
}
export default function ProductCard({ product, onDelete }: ProductCardProps) {
const formatPrice = (price: number | null, currency: string | null) => {
if (price === null) return 'N/A';
const currencySymbol =
currency === 'EUR' ? '€' : currency === 'GBP' ? '£' : '$';
return `${currencySymbol}${price.toFixed(2)}`;
};
const formatDate = (dateStr: string | null) => {
if (!dateStr) return 'Never';
const date = new Date(dateStr);
return date.toLocaleDateString() + ' ' + date.toLocaleTimeString();
};
const truncateUrl = (url: string, maxLength: number = 50) => {
try {
const parsed = new URL(url);
const display = parsed.hostname + parsed.pathname;
return display.length > maxLength
? display.slice(0, maxLength) + '...'
: display;
} catch {
return url.length > maxLength ? url.slice(0, maxLength) + '...' : url;
}
};
return (
<div className="product-card">
<style>{`
.product-card {
background: var(--surface);
border-radius: 0.75rem;
box-shadow: var(--shadow);
overflow: hidden;
display: flex;
flex-direction: column;
transition: box-shadow 0.2s;
}
.product-card:hover {
box-shadow: var(--shadow-lg);
}
.product-image {
width: 100%;
height: 160px;
object-fit: contain;
background: #f8fafc;
padding: 1rem;
}
.product-image-placeholder {
width: 100%;
height: 160px;
background: linear-gradient(135deg, #e2e8f0 0%, #f1f5f9 100%);
display: flex;
align-items: center;
justify-content: center;
color: var(--text-muted);
font-size: 2rem;
}
.product-content {
padding: 1rem;
flex: 1;
display: flex;
flex-direction: column;
}
.product-name {
font-weight: 600;
color: var(--text);
margin-bottom: 0.25rem;
line-height: 1.3;
display: -webkit-box;
-webkit-line-clamp: 2;
-webkit-box-orient: vertical;
overflow: hidden;
}
.product-url {
font-size: 0.75rem;
color: var(--text-muted);
margin-bottom: 0.75rem;
}
.product-price {
font-size: 1.5rem;
font-weight: 700;
color: var(--primary);
margin-bottom: 0.5rem;
}
.product-meta {
font-size: 0.75rem;
color: var(--text-muted);
margin-bottom: 1rem;
}
.product-actions {
display: flex;
gap: 0.5rem;
margin-top: auto;
}
.product-actions .btn {
flex: 1;
padding: 0.5rem;
font-size: 0.875rem;
}
`}</style>
{product.image_url ? (
<img
src={product.image_url}
alt={product.name || 'Product'}
className="product-image"
/>
) : (
<div className="product-image-placeholder">📦</div>
)}
<div className="product-content">
<h3 className="product-name">{product.name || 'Unknown Product'}</h3>
<p className="product-url">{truncateUrl(product.url)}</p>
<div className="product-price">
{formatPrice(product.current_price, product.currency)}
</div>
<p className="product-meta">
Last checked: {formatDate(product.last_checked)}
</p>
<div className="product-actions">
<Link to={`/product/${product.id}`} className="btn btn-primary">
View Details
</Link>
<button
className="btn btn-danger"
onClick={() => onDelete(product.id)}
>
Delete
</button>
</div>
</div>
</div>
);
}

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import { useState, FormEvent } from 'react';
interface ProductFormProps {
onSubmit: (url: string, refreshInterval: number) => Promise<void>;
}
const REFRESH_INTERVALS = [
{ value: 900, label: '15 minutes' },
{ value: 1800, label: '30 minutes' },
{ value: 3600, label: '1 hour' },
{ value: 7200, label: '2 hours' },
{ value: 21600, label: '6 hours' },
{ value: 43200, label: '12 hours' },
{ value: 86400, label: '24 hours' },
];
export default function ProductForm({ onSubmit }: ProductFormProps) {
const [url, setUrl] = useState('');
const [refreshInterval, setRefreshInterval] = useState(3600);
const [isLoading, setIsLoading] = useState(false);
const [error, setError] = useState('');
const handleSubmit = async (e: FormEvent) => {
e.preventDefault();
setError('');
// Validate URL
try {
new URL(url);
} catch {
setError('Please enter a valid URL');
return;
}
setIsLoading(true);
try {
await onSubmit(url, refreshInterval);
setUrl('');
setRefreshInterval(3600);
} catch (err) {
if (err instanceof Error) {
// eslint-disable-next-line @typescript-eslint/no-explicit-any
const axiosError = err as any;
setError(axiosError.response?.data?.error || 'Failed to add product');
} else {
setError('Failed to add product');
}
} finally {
setIsLoading(false);
}
};
return (
<div className="product-form">
<style>{`
.product-form {
background: var(--surface);
border-radius: 0.75rem;
padding: 1.5rem;
box-shadow: var(--shadow);
margin-bottom: 2rem;
}
.product-form h2 {
font-size: 1.25rem;
margin-bottom: 1rem;
color: var(--text);
}
.product-form-row {
display: grid;
gap: 1rem;
grid-template-columns: 1fr auto auto;
align-items: end;
}
@media (max-width: 768px) {
.product-form-row {
grid-template-columns: 1fr;
}
}
`}</style>
<h2>Track a New Product</h2>
{error && <div className="alert alert-error mb-3">{error}</div>}
<form onSubmit={handleSubmit}>
<div className="product-form-row">
<div className="form-group" style={{ margin: 0 }}>
<label htmlFor="product-url">Product URL</label>
<input
type="url"
id="product-url"
value={url}
onChange={(e) => setUrl(e.target.value)}
placeholder="https://www.example.com/product"
required
/>
</div>
<div className="form-group" style={{ margin: 0 }}>
<label htmlFor="refresh-interval">Check Every</label>
<select
id="refresh-interval"
value={refreshInterval}
onChange={(e) => setRefreshInterval(parseInt(e.target.value, 10))}
>
{REFRESH_INTERVALS.map((interval) => (
<option key={interval.value} value={interval.value}>
{interval.label}
</option>
))}
</select>
</div>
<button
type="submit"
className="btn btn-primary"
disabled={isLoading}
style={{ height: '46px' }}
>
{isLoading ? <span className="spinner" /> : 'Add Product'}
</button>
</div>
</form>
</div>
);
}