first-update
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147
easy-dataset-main/electron/modules/database.js
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147
easy-dataset-main/electron/modules/database.js
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const fs = require('fs');
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const path = require('path');
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const { dialog } = require('electron');
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const { updateDatabase } = require('./db-updater');
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/**
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* 清除数据库缓存
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* @param {Object} app Electron app 对象
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* @returns {Promise<boolean>} 操作是否成功
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*/
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async function clearDatabaseCache(app) {
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// 清理local-db目录,保留db.sqlite文件
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const localDbDir = path.join(app.getPath('userData'), 'local-db');
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if (fs.existsSync(localDbDir)) {
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// 读取目录下所有文件
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const files = await fs.promises.readdir(localDbDir);
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// 删除除了db.sqlite之外的所有文件
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for (const file of files) {
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if (file !== 'db.sqlite') {
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const filePath = path.join(localDbDir, file);
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const stat = await fs.promises.stat(filePath);
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if (stat.isFile()) {
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await fs.promises.unlink(filePath);
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global.appLog(`已删除数据库缓存文件: ${filePath}`);
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} else if (stat.isDirectory()) {
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// 如果是目录,可能需要递归删除,根据需求决定
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global.appLog(`跳过目录: ${filePath}`);
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}
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}
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}
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}
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return true;
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}
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/**
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* 初始化数据库
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* @param {Object} app Electron app 对象
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* @returns {Promise<Object>} 数据库配置信息
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*/
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async function initializeDatabase(app) {
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try {
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// 设置数据库路径
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const userDataPath = app.getPath('userData');
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const dataDir = path.join(userDataPath, 'local-db');
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const dbFilePath = path.join(dataDir, 'db.sqlite');
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const dbJSONPath = path.join(dataDir, 'db.json');
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fs.writeFileSync(path.join(process.resourcesPath, 'root-path.txt'), dataDir);
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// 确保数据目录存在
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if (!fs.existsSync(dataDir)) {
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fs.mkdirSync(dataDir, { recursive: true });
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console.log(`数据目录已创建: ${dataDir}`);
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}
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// 设置数据库连接字符串 (Prisma 格式)
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const dbConnectionString = `file:${dbFilePath}`;
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process.env.DATABASE_URL = dbConnectionString;
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// 仅在开发环境记录日志
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const logs = {
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userDataPath,
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dataDir,
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dbFilePath,
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dbConnectionString,
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dbExists: fs.existsSync(dbFilePath)
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};
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global.appLog(`数据库配置: ${JSON.stringify(logs)}`);
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if (!fs.existsSync(dbFilePath)) {
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global.appLog('数据库文件不存在,正在初始化...');
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try {
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const resourcePath =
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process.env.NODE_ENV === 'development'
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? path.join(__dirname, '../..', 'prisma', 'template.sqlite')
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: path.join(process.resourcesPath, 'prisma', 'template.sqlite');
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const resourceJSONPath =
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process.env.NODE_ENV === 'development'
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? path.join(__dirname, '../..', 'prisma', 'sql.json')
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: path.join(process.resourcesPath, 'prisma', 'sql.json');
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global.appLog(`resourcePath: ${resourcePath}`);
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if (fs.existsSync(resourcePath)) {
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fs.copyFileSync(resourcePath, dbFilePath);
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global.appLog(`数据库已从模板初始化: ${dbFilePath}`);
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}
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if (fs.existsSync(resourceJSONPath)) {
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fs.copyFileSync(resourceJSONPath, dbJSONPath);
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global.appLog(`数据库SQL配置已初始化: ${dbJSONPath}`);
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}
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} catch (error) {
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console.error('数据库初始化失败:', error);
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dialog.showErrorBox('数据库初始化失败', `应用无法初始化数据库,可能需要重新安装。\n错误详情: ${error.message}`);
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throw error;
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}
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} else {
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// 数据库文件存在,检查是否需要更新
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global.appLog('检查数据库是否需要更新...');
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try {
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const resourcesPath =
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process.env.NODE_ENV === 'development' ? path.join(__dirname, '../..') : process.resourcesPath;
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const isDev = process.env.NODE_ENV === 'development';
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// 更新数据库
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const result = await updateDatabase(userDataPath, resourcesPath, isDev, global.appLog);
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if (result.updated) {
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global.appLog(`数据库更新成功: ${result.message}`);
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global.appLog(`执行的版本: ${result.executedVersions.join(', ')}`);
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} else {
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global.appLog(`数据库无需更新: ${result.message}`);
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}
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} catch (error) {
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console.error('数据库更新失败:', error);
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global.appLog(`数据库更新失败: ${error.message}`, 'error');
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// 非致命错误,只提示但不阻止应用启动
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dialog.showMessageBox({
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type: 'warning',
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title: '数据库更新警告',
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message: '数据库更新过程中出现错误,部分功能可能受影响。',
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detail: `错误详情: ${error.message}\n\n您可以继续使用应用,但如果遇到问题,请重新安装应用。`,
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buttons: ['继续']
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});
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}
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}
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return {
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userDataPath,
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dataDir,
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dbFilePath,
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dbConnectionString
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};
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} catch (error) {
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console.error('初始化数据库时发生错误:', error);
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throw error;
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}
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}
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module.exports = {
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clearDatabaseCache,
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initializeDatabase
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};
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