106 lines
2.7 KiB
JavaScript
106 lines
2.7 KiB
JavaScript
import { createPool } from 'mariadb';
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import fs from 'fs';
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import path from 'path';
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function loadDatabaseConfig() {
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const envPath = path.join(process.cwd(), '.env');
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if (fs.existsSync(envPath)) {
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const envContent = fs.readFileSync(envPath, 'utf-8');
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const lines = envContent.split('\n');
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for (const line of lines) {
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const trimmedLine = line.trim();
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if (trimmedLine.startsWith('DATABASE_URL=')) {
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const url = trimmedLine.substring('DATABASE_URL='.length).replace(/^"|"$/g, '');
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// 解析URL
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const parts = url.split('://')[1].split('@');
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const auth = parts[0].split(':');
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const hostAndDb = parts[1].split('/');
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const hostAndPort = hostAndDb[0].split(':');
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return {
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user: auth[0],
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password: auth[1],
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host: hostAndPort[0],
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port: parseInt(hostAndPort[1]),
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database: hostAndDb[1]
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};
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}
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}
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}
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return {
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host: '192.168.111.111',
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port: 3306,
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user: 'root',
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password: 'fullstack',
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database: 'iboard'
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};
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}
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let pool;
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async function initPool() {
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if (!pool) {
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const config = loadDatabaseConfig();
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pool = createPool({
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host: config.host,
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port: config.port,
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user: config.user,
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password: config.password,
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database: config.database,
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connectionLimit: 5
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});
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}
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return pool;
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}
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export default async function handler(req, res) {
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try {
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await initPool();
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// 获取查询参数
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const { startDate, endDate, limit = 30 } = req.query;
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let query = 'SELECT date, centerPrice FROM econ_ExchangeRate WHERE currency = ? ORDER BY date DESC';
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const params = ['USD/CNY'];
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if (startDate && endDate) {
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query = 'SELECT date, centerPrice FROM econ_ExchangeRate WHERE currency = ? AND date BETWEEN ? AND ? ORDER BY date DESC';
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params.push(startDate, endDate);
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}
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const result = await pool.query(query, params);
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// 限制返回数量
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const limitedResult = result.slice(0, parseInt(limit));
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// 反转顺序，使日期从早到晚
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const sortedResult = limitedResult.reverse();
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// 格式化数据
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const formattedData = sortedResult.map(row => ({
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date: row.date instanceof Date ? row.date.toISOString().split('T')[0] : row.date,
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rate: parseFloat(row.centerPrice)
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}));
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res.status(200).json({
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success: true,
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data: formattedData,
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total: result.length
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});
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} catch (error) {
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console.error('获取汇率数据失败:', error.message);
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res.status(500).json({
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success: false,
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message: '获取汇率数据失败',
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error: error.message
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});
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} finally {
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if (pool) {
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await pool.end();
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}
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}
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}
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