540 lines
18 KiB
JavaScript
540 lines
18 KiB
JavaScript
require('dotenv').config();
|
|
const express = require('express');
|
|
const { Pool } = require('pg');
|
|
const session = require('express-session');
|
|
const cors = require('cors');
|
|
const path = require('path');
|
|
|
|
const app = express();
|
|
|
|
// Middleware
|
|
app.use(cors());
|
|
app.use(express.json());
|
|
app.use(express.static('.'));
|
|
|
|
// Session configuration
|
|
app.use(session({
|
|
secret: process.env.SESSION_SECRET || 'default-secret-change-this',
|
|
resave: false,
|
|
saveUninitialized: false,
|
|
cookie: { secure: false } // Set to true if using HTTPS
|
|
}));
|
|
|
|
// Database connection pool (uses .env configuration)
|
|
const pool = new Pool({
|
|
host: process.env.DB_HOST,
|
|
port: process.env.DB_PORT,
|
|
database: process.env.DB_NAME,
|
|
user: process.env.DB_USER,
|
|
password: process.env.DB_PASSWORD,
|
|
});
|
|
|
|
// Test database connection on startup
|
|
pool.connect((err, client, release) => {
|
|
if (err) {
|
|
console.error('❌ Error connecting to PostgreSQL:', err.message);
|
|
console.log('Проверьте настройки в .env файле');
|
|
} else {
|
|
console.log('✅ Connected to PostgreSQL database');
|
|
console.log(` Host: ${process.env.DB_HOST}:${process.env.DB_PORT}`);
|
|
console.log(` Database: ${process.env.DB_NAME}`);
|
|
release();
|
|
}
|
|
});
|
|
|
|
// Helper: get primary key column for a table (returns null if none)
|
|
async function getPrimaryKeyColumn(tableName) {
|
|
const result = await pool.query(`
|
|
SELECT kcu.column_name
|
|
FROM information_schema.table_constraints tc
|
|
JOIN information_schema.key_column_usage kcu
|
|
ON tc.constraint_name = kcu.constraint_name
|
|
AND tc.table_schema = kcu.table_schema
|
|
WHERE tc.constraint_type = 'PRIMARY KEY'
|
|
AND tc.table_name = $1
|
|
AND tc.table_schema = 'public'
|
|
LIMIT 1
|
|
`, [tableName]);
|
|
|
|
return result.rows[0]?.column_name || null;
|
|
}
|
|
|
|
// Middleware to check if user is authenticated
|
|
const requireAuth = (req, res, next) => {
|
|
if (req.session && req.session.authenticated) {
|
|
next();
|
|
} else {
|
|
res.status(401).json({ error: 'Unauthorized' });
|
|
}
|
|
};
|
|
|
|
// Login endpoint - checks admin credentials from .env
|
|
app.post('/api/login', async (req, res) => {
|
|
const { username, password } = req.body;
|
|
|
|
// Check against .env credentials
|
|
if (username === process.env.ADMIN_USERNAME && password === process.env.ADMIN_PASSWORD) {
|
|
// Test database connection
|
|
try {
|
|
const client = await pool.connect();
|
|
const result = await client.query('SELECT NOW() as time');
|
|
client.release();
|
|
|
|
req.session.authenticated = true;
|
|
req.session.username = username;
|
|
|
|
res.json({
|
|
success: true,
|
|
message: 'Login successful',
|
|
dbInfo: {
|
|
host: process.env.DB_HOST,
|
|
port: process.env.DB_PORT,
|
|
database: process.env.DB_NAME,
|
|
connected: true,
|
|
serverTime: result.rows[0].time
|
|
}
|
|
});
|
|
} catch (err) {
|
|
res.status(500).json({
|
|
success: false,
|
|
error: 'Database connection failed',
|
|
details: err.message
|
|
});
|
|
}
|
|
} else {
|
|
res.status(401).json({
|
|
success: false,
|
|
error: 'Invalid credentials'
|
|
});
|
|
}
|
|
});
|
|
|
|
// Logout
|
|
app.post('/api/logout', (req, res) => {
|
|
req.session.destroy();
|
|
res.json({ success: true });
|
|
});
|
|
|
|
// Check session
|
|
app.get('/api/session', (req, res) => {
|
|
if (req.session.authenticated) {
|
|
res.json({
|
|
authenticated: true,
|
|
username: req.session.username,
|
|
dbInfo: {
|
|
host: process.env.DB_HOST,
|
|
port: process.env.DB_PORT,
|
|
database: process.env.DB_NAME
|
|
}
|
|
});
|
|
} else {
|
|
res.json({ authenticated: false });
|
|
}
|
|
});
|
|
|
|
// Get all tables
|
|
app.get('/api/tables', requireAuth, async (req, res) => {
|
|
try {
|
|
const result = await pool.query(`
|
|
SELECT
|
|
table_name as name,
|
|
(SELECT COUNT(*) FROM information_schema.columns WHERE table_name = t.table_name) as column_count
|
|
FROM information_schema.tables t
|
|
WHERE table_schema = 'public'
|
|
ORDER BY table_name
|
|
`);
|
|
|
|
// Get row counts for each table
|
|
const tablesWithCounts = await Promise.all(
|
|
result.rows.map(async (table) => {
|
|
try {
|
|
const countResult = await pool.query(`SELECT COUNT(*) as count FROM "${table.name}"`);
|
|
return {
|
|
...table,
|
|
rows: parseInt(countResult.rows[0].count),
|
|
size: 'calculating...' // Would need pg_size_pretty for real size
|
|
};
|
|
} catch (e) {
|
|
return { ...table, rows: 0, size: '0 KB' };
|
|
}
|
|
})
|
|
);
|
|
|
|
res.json(tablesWithCounts);
|
|
} catch (err) {
|
|
res.status(500).json({ error: err.message });
|
|
}
|
|
});
|
|
|
|
// Get table data with pagination, search, filters and sort
|
|
app.get('/api/tables/:tableName/data', requireAuth, async (req, res) => {
|
|
const { tableName } = req.params;
|
|
const page = parseInt(req.query.page) || 1;
|
|
const limit = parseInt(req.query.limit) || 10;
|
|
const search = req.query.search || '';
|
|
const filters = req.query.filters ? JSON.parse(req.query.filters) : [];
|
|
const sortColumn = req.query.sortColumn || '';
|
|
const sortDirection = req.query.sortDirection || 'ASC';
|
|
const offset = (page - 1) * limit;
|
|
|
|
try {
|
|
let whereClause = '';
|
|
let params = [];
|
|
let paramIndex = 1;
|
|
|
|
// Search
|
|
if (search) {
|
|
const columnsResult = await pool.query(`
|
|
SELECT column_name
|
|
FROM information_schema.columns
|
|
WHERE table_name = $1 AND table_schema = 'public'
|
|
ORDER BY ordinal_position
|
|
`, [tableName]);
|
|
|
|
const columns = columnsResult.rows.map(row => row.column_name);
|
|
const searchConditions = columns.map(col => `CAST("${col}" AS TEXT) ILIKE $${paramIndex}`).join(' OR ');
|
|
whereClause = `WHERE ${searchConditions}`;
|
|
params.push(`%${search}%`);
|
|
paramIndex++;
|
|
}
|
|
|
|
// Filters
|
|
if (filters && typeof filters === 'object') {
|
|
const filterConditions = Object.entries(filters).map(([column, value]) => {
|
|
if (value && value.trim()) {
|
|
params.push(`%${value}%`);
|
|
paramIndex++;
|
|
// Use CAST to TEXT to support UUID and other non-text column types
|
|
return `CAST("${column}" AS TEXT) ILIKE $${paramIndex - 1}`;
|
|
}
|
|
return null;
|
|
}).filter(c => c);
|
|
|
|
if (filterConditions.length > 0) {
|
|
whereClause = whereClause ? `${whereClause} AND ${filterConditions.join(' AND ')}` : `WHERE ${filterConditions.join(' AND ')}`;
|
|
}
|
|
}
|
|
|
|
// Get total count
|
|
const countResult = await pool.query(`SELECT COUNT(*) as total FROM "${tableName}" ${whereClause}`, params);
|
|
const total = parseInt(countResult.rows[0].total);
|
|
|
|
// Build ORDER BY
|
|
let orderBy = 'ORDER BY (SELECT NULL)'; // Default no order
|
|
if (sortColumn) {
|
|
orderBy = `ORDER BY "${sortColumn}" ${sortDirection}`;
|
|
}
|
|
|
|
// Get data
|
|
const result = await pool.query(`
|
|
SELECT * FROM "${tableName}"
|
|
${whereClause}
|
|
${orderBy}
|
|
LIMIT $${paramIndex} OFFSET $${paramIndex + 1}
|
|
`, [...params, limit, offset]);
|
|
|
|
res.json({
|
|
data: result.rows,
|
|
total,
|
|
page,
|
|
limit,
|
|
totalPages: Math.ceil(total / limit)
|
|
});
|
|
} catch (err) {
|
|
res.status(500).json({ error: err.message });
|
|
}
|
|
});
|
|
|
|
// Get table structure
|
|
app.get('/api/tables/:tableName/structure', requireAuth, async (req, res) => {
|
|
const { tableName } = req.params;
|
|
|
|
try {
|
|
const result = await pool.query(`
|
|
SELECT
|
|
c.column_name as name,
|
|
c.data_type as type,
|
|
c.is_nullable as nullable,
|
|
c.column_default as default_value,
|
|
CASE WHEN kcu.column_name IS NOT NULL THEN true ELSE false END as is_primary
|
|
FROM information_schema.columns c
|
|
LEFT JOIN information_schema.table_constraints tc
|
|
ON tc.table_name = c.table_name
|
|
AND tc.table_schema = c.table_schema
|
|
AND tc.constraint_type = 'PRIMARY KEY'
|
|
LEFT JOIN information_schema.key_column_usage kcu
|
|
ON kcu.constraint_name = tc.constraint_name
|
|
AND kcu.table_schema = tc.table_schema
|
|
AND kcu.column_name = c.column_name
|
|
WHERE c.table_name = $1 AND c.table_schema = 'public'
|
|
ORDER BY c.ordinal_position
|
|
`, [tableName]);
|
|
|
|
res.json(result.rows);
|
|
} catch (err) {
|
|
res.status(500).json({ error: err.message });
|
|
}
|
|
});
|
|
|
|
// Create table
|
|
app.post('/api/tables', requireAuth, async (req, res) => {
|
|
const { name, columns } = req.body;
|
|
|
|
try {
|
|
let columnsSQL = columns.map(col => {
|
|
let def = `"${col.name}" ${col.type}`;
|
|
if (col.pk) def += ' PRIMARY KEY';
|
|
if (!col.nullable && !col.pk) def += ' NOT NULL';
|
|
return def;
|
|
}).join(', ');
|
|
|
|
const sql = `CREATE TABLE "${name}" (${columnsSQL})`;
|
|
await pool.query(sql);
|
|
|
|
res.json({ success: true, message: 'Table created' });
|
|
} catch (err) {
|
|
res.status(500).json({ error: err.message });
|
|
}
|
|
});
|
|
|
|
// Delete table
|
|
app.delete('/api/tables/:tableName', requireAuth, async (req, res) => {
|
|
const { tableName } = req.params;
|
|
|
|
try {
|
|
await pool.query(`DROP TABLE IF EXISTS "${tableName}"`);
|
|
res.json({ success: true, message: 'Table deleted' });
|
|
} catch (err) {
|
|
res.status(500).json({ error: err.message });
|
|
}
|
|
});
|
|
|
|
// Insert record
|
|
app.post('/api/tables/:tableName/records', requireAuth, async (req, res) => {
|
|
const { tableName } = req.params;
|
|
const data = req.body;
|
|
|
|
try {
|
|
// Get table structure to check types
|
|
const structureResult = await pool.query(`
|
|
SELECT column_name, data_type
|
|
FROM information_schema.columns
|
|
WHERE table_name = $1 AND table_schema = 'public'
|
|
`, [tableName]);
|
|
|
|
const structure = structureResult.rows;
|
|
|
|
// Filter out empty UUIDs and generate if needed
|
|
const filteredData = {};
|
|
for (const [key, value] of Object.entries(data)) {
|
|
const colInfo = structure.find(col => col.column_name === key);
|
|
if (colInfo && colInfo.data_type === 'uuid') {
|
|
if (!value || value.trim() === '') {
|
|
// Generate UUID for empty UUID fields
|
|
filteredData[key] = require('crypto').randomUUID();
|
|
} else {
|
|
// Validate UUID
|
|
const uuidRegex = /^[0-9a-f]{8}-[0-9a-f]{4}-[1-5][0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$/i;
|
|
if (uuidRegex.test(value)) {
|
|
filteredData[key] = value;
|
|
} else {
|
|
// Invalid UUID, generate new one
|
|
filteredData[key] = require('crypto').randomUUID();
|
|
}
|
|
}
|
|
} else if (value !== '') {
|
|
filteredData[key] = value;
|
|
}
|
|
}
|
|
|
|
const columns = Object.keys(filteredData);
|
|
const values = Object.values(filteredData);
|
|
const placeholders = values.map((_, i) => `$${i + 1}`).join(', ');
|
|
|
|
const sql = `INSERT INTO "${tableName}" (${columns.map(c => `"${c}"`).join(', ')}) VALUES (${placeholders}) RETURNING *`;
|
|
const result = await pool.query(sql, values);
|
|
res.json({ success: true, data: result.rows[0] });
|
|
} catch (err) {
|
|
res.status(500).json({ error: err.message });
|
|
}
|
|
});
|
|
|
|
// Update record
|
|
app.put('/api/tables/:tableName/records/:pk', requireAuth, async (req, res) => {
|
|
const { tableName, pk } = req.params;
|
|
const data = req.body;
|
|
|
|
const columns = Object.keys(data);
|
|
const values = Object.values(data);
|
|
const setClause = columns.map((col, i) => `"${col}" = $${i + 1}`).join(', ');
|
|
|
|
try {
|
|
const primaryKey = await getPrimaryKeyColumn(tableName) || 'id';
|
|
const sql = `UPDATE "${tableName}" SET ${setClause} WHERE "${primaryKey}" = $${values.length + 1} RETURNING *`;
|
|
const result = await pool.query(sql, [...values, pk]);
|
|
res.json({ success: true, data: result.rows[0] });
|
|
} catch (err) {
|
|
res.status(500).json({ error: err.message });
|
|
}
|
|
});
|
|
|
|
// Delete record
|
|
app.delete('/api/tables/:tableName/records/:pk', requireAuth, async (req, res) => {
|
|
const { tableName, pk } = req.params;
|
|
|
|
try {
|
|
const primaryKey = await getPrimaryKeyColumn(tableName) || 'id';
|
|
await pool.query(`DELETE FROM "${tableName}" WHERE "${primaryKey}" = $1`, [pk]);
|
|
res.json({ success: true });
|
|
} catch (err) {
|
|
res.status(500).json({ error: err.message });
|
|
}
|
|
});
|
|
|
|
// Add a new column
|
|
app.post('/api/tables/:tableName/columns', requireAuth, async (req, res) => {
|
|
const { tableName } = req.params;
|
|
const { name, type, nullable = true, defaultValue, primaryKey } = req.body;
|
|
|
|
if (!name || !type) {
|
|
return res.status(400).json({ error: 'Column name and type are required' });
|
|
}
|
|
|
|
const parts = [`"${name}" ${type}`];
|
|
if (primaryKey) parts.push('PRIMARY KEY');
|
|
if (!nullable) parts.push('NOT NULL');
|
|
if (defaultValue !== undefined && defaultValue !== null && defaultValue !== '') {
|
|
parts.push(`DEFAULT ${defaultValue}`);
|
|
}
|
|
|
|
try {
|
|
await pool.query(`ALTER TABLE "${tableName}" ADD COLUMN ${parts.join(' ')}`);
|
|
res.json({ success: true });
|
|
} catch (err) {
|
|
res.status(500).json({ error: err.message });
|
|
}
|
|
});
|
|
|
|
// Modify an existing column
|
|
app.put('/api/tables/:tableName/columns/:columnName', requireAuth, async (req, res) => {
|
|
const { tableName, columnName } = req.params;
|
|
const { type, nullable, defaultValue } = req.body;
|
|
|
|
try {
|
|
if (type) {
|
|
await pool.query(`ALTER TABLE "${tableName}" ALTER COLUMN "${columnName}" TYPE ${type}`);
|
|
}
|
|
|
|
if (typeof nullable === 'boolean') {
|
|
const nullSql = nullable ? 'DROP NOT NULL' : 'SET NOT NULL';
|
|
await pool.query(`ALTER TABLE "${tableName}" ALTER COLUMN "${columnName}" ${nullSql}`);
|
|
}
|
|
|
|
if (defaultValue !== undefined) {
|
|
if (defaultValue === null || defaultValue === '') {
|
|
await pool.query(`ALTER TABLE "${tableName}" ALTER COLUMN "${columnName}" DROP DEFAULT`);
|
|
} else {
|
|
await pool.query(`ALTER TABLE "${tableName}" ALTER COLUMN "${columnName}" SET DEFAULT ${defaultValue}`);
|
|
}
|
|
}
|
|
|
|
res.json({ success: true });
|
|
} catch (err) {
|
|
res.status(500).json({ error: err.message });
|
|
}
|
|
});
|
|
|
|
// Drop a column
|
|
app.delete('/api/tables/:tableName/columns/:columnName', requireAuth, async (req, res) => {
|
|
const { tableName, columnName } = req.params;
|
|
|
|
try {
|
|
await pool.query(`ALTER TABLE "${tableName}" DROP COLUMN IF EXISTS "${columnName}"`);
|
|
res.json({ success: true });
|
|
} catch (err) {
|
|
res.status(500).json({ error: err.message });
|
|
}
|
|
});
|
|
|
|
// Execute SQL
|
|
app.post('/api/query', requireAuth, async (req, res) => {
|
|
const { sql } = req.body;
|
|
|
|
try {
|
|
const result = await pool.query(sql);
|
|
res.json({
|
|
success: true,
|
|
rows: result.rows,
|
|
rowCount: result.rowCount,
|
|
command: result.command
|
|
});
|
|
} catch (err) {
|
|
res.status(500).json({ error: err.message });
|
|
}
|
|
});
|
|
|
|
// Get indexes
|
|
app.get('/api/tables/:tableName/indexes', requireAuth, async (req, res) => {
|
|
const { tableName } = req.params;
|
|
|
|
try {
|
|
const result = await pool.query(`
|
|
SELECT
|
|
indexname as name,
|
|
indexdef as definition
|
|
FROM pg_indexes
|
|
WHERE tablename = $1
|
|
`, [tableName]);
|
|
|
|
const indexes = result.rows.map(row => ({
|
|
name: row.name,
|
|
columns: row.definition.match(/\((.*?)\)/)?.[1] || 'unknown',
|
|
unique: row.definition.includes('UNIQUE'),
|
|
type: 'btree'
|
|
}));
|
|
|
|
res.json(indexes);
|
|
} catch (err) {
|
|
res.status(500).json({ error: err.message });
|
|
}
|
|
});
|
|
|
|
// Create index
|
|
app.post('/api/tables/:tableName/indexes', requireAuth, async (req, res) => {
|
|
const { tableName } = req.params;
|
|
const { name, columns, unique } = req.body;
|
|
|
|
try {
|
|
const uniqueStr = unique ? 'UNIQUE' : '';
|
|
const sql = `CREATE ${uniqueStr} INDEX "${name}" ON "${tableName}" (${columns})`;
|
|
await pool.query(sql);
|
|
res.json({ success: true });
|
|
} catch (err) {
|
|
res.status(500).json({ error: err.message });
|
|
}
|
|
});
|
|
|
|
// Drop index
|
|
app.delete('/api/indexes/:indexName', requireAuth, async (req, res) => {
|
|
const { indexName } = req.params;
|
|
|
|
try {
|
|
await pool.query(`DROP INDEX IF EXISTS "${indexName}"`);
|
|
res.json({ success: true });
|
|
} catch (err) {
|
|
res.status(500).json({ error: err.message });
|
|
}
|
|
});
|
|
|
|
// Start server
|
|
const PORT = process.env.PORT || 3000;
|
|
app.listen(PORT, () => {
|
|
console.log(`🚀 Server running on http://localhost:${PORT}`);
|
|
console.log('');
|
|
console.log('🔑 Default login credentials:');
|
|
console.log(` Username: ${process.env.ADMIN_USERNAME || 'admin'}`);
|
|
console.log(` Password: ${process.env.ADMIN_PASSWORD || 'admin'}`);
|
|
console.log('');
|
|
console.log('📝 Make sure to configure your database in .env file');
|
|
});
|