Initial commit: 5 Why Root Cause Analyzer v1.0.0

Phase 0 & Phase 2 completed:
- Project structure setup
- Environment configuration (.env, .gitignore)
- Enterprise-grade dependencies (bcrypt, helmet, mysql2, etc.)
- Complete database schema with 8 tables + 2 views
- Database initialization scripts
- Comprehensive documentation

Database Tables:
- users (user management with 3-tier permissions)
- analyses (analysis records)
- analysis_perspectives (multi-angle analysis)
- analysis_whys (detailed 5 Why records)
- llm_configs (LLM API configurations)
- system_settings (system parameters)
- audit_logs (security audit trail)
- sessions (session management)

Tech Stack:
- Backend: Node.js + Express
- Frontend: React 18 + Vite + Tailwind CSS
- Database: MySQL 9.4.0
- AI: Ollama API (qwen2.5:3b)

Generated with Claude Code
Co-Authored-By: Claude <noreply@anthropic.com>

scripts/init-database.js

@@ -0,0 +1,134 @@
+import fs from 'fs';
+import path from 'path';
+import { fileURLToPath } from 'url';
+import mysql from 'mysql2/promise';
+import dotenv from 'dotenv';
+import bcrypt from 'bcryptjs';
+
+// 載入環境變數
+dotenv.config();
+
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = path.dirname(__filename);
+
+// 資料庫配置
+const dbConfig = {
+  host: process.env.DB_HOST || 'mysql.theaken.com',
+  port: parseInt(process.env.DB_PORT) || 33306,
+  user: process.env.DB_USER || 'A102',
+  password: process.env.DB_PASSWORD || 'Bb123456',
+  database: process.env.DB_NAME || 'db_A102',
+  multipleStatements: true
+};
+
+async function initDatabase() {
+  let connection;
+
+  try {
+    console.log('🔄 Connecting to database...');
+    console.log(`   Host: ${dbConfig.host}:${dbConfig.port}`);
+    console.log(`   Database: ${dbConfig.database}`);
+
+    connection = await mysql.createConnection(dbConfig);
+    console.log('✅ Connected successfully\n');
+
+    // 讀取 SQL 檔案
+    const sqlPath = path.join(__dirname, '../docs/db_schema.sql');
+    console.log('📖 Reading SQL file:', sqlPath);
+
+    let sqlContent = fs.readFileSync(sqlPath, 'utf8');
+
+    // 生成管理者密碼 hash
+    const adminPassword = process.env.ADMIN_PASSWORD || 'Admin@123456';
+    const adminHash = await bcrypt.hash(adminPassword, 10);
+
+    console.log('🔐 Generated admin password hash');
+
+    // 替換 SQL 中的密碼 hash
+    sqlContent = sqlContent.replace(/\$2a\$10\$YourBcryptHashHere/g, adminHash);
+
+    // 分割 SQL 語句
+    const statements = sqlContent
+      .split(';')
+      .map(stmt => stmt.trim())
+      .filter(stmt => stmt.length > 0 && !stmt.startsWith('--'));
+
+    console.log(`\n📝 Found ${statements.length} SQL statements\n`);
+
+    // 執行每個語句
+    for (let i = 0; i < statements.length; i++) {
+      const statement = statements[i];
+
+      // 跳過註解和空白
+      if (statement.startsWith('--') || statement.trim() === '') {
+        continue;
+      }
+
+      try {
+        // 顯示正在執行的語句類型
+        let action = 'Executing';
+        if (statement.toUpperCase().includes('CREATE TABLE')) {
+          const match = statement.match(/CREATE TABLE(?:\s+IF NOT EXISTS)?\s+`?(\w+)`?/i);
+          if (match) {
+            action = `Creating table: ${match[1]}`;
+          }
+        } else if (statement.toUpperCase().includes('CREATE VIEW')) {
+          const match = statement.match(/CREATE.*VIEW\s+`?(\w+)`?/i);
+          if (match) {
+            action = `Creating view: ${match[1]}`;
+          }
+        } else if (statement.toUpperCase().includes('INSERT INTO')) {
+          const match = statement.match(/INSERT INTO\s+`?(\w+)`?/i);
+          if (match) {
+            action = `Inserting data into: ${match[1]}`;
+          }
+        }
+
+        console.log(`   [${i + 1}/${statements.length}] ${action}`);
+        await connection.execute(statement);
+      } catch (error) {
+        // 如果是 "already exists" 錯誤，只顯示警告
+        if (error.message.includes('already exists')) {
+          console.log(`   ⚠️  Already exists, skipping...`);
+        } else {
+          console.error(`   ❌ Error: ${error.message}`);
+        }
+      }
+    }
+
+    console.log('\n✅ Database initialization completed successfully!\n');
+
+    // 顯示建立的資料表
+    const [tables] = await connection.execute('SHOW TABLES');
+    console.log('📊 Tables in database:');
+    tables.forEach((table, index) => {
+      const tableName = Object.values(table)[0];
+      console.log(`   ${index + 1}. ${tableName}`);
+    });
+
+    console.log('\n🔐 Default admin credentials:');
+    console.log(`   Email: ${process.env.ADMIN_EMAIL || 'admin@example.com'}`);
+    console.log(`   Password: ${adminPassword}`);
+    console.log('\n⚠️  Please change the admin password after first login!\n');
+
+  } catch (error) {
+    console.error('\n❌ Database initialization failed:');
+    console.error('   Error:', error.message);
+    if (error.code) {
+      console.error('   Error Code:', error.code);
+    }
+    process.exit(1);
+  } finally {
+    if (connection) {
+      await connection.end();
+      console.log('🔌 Database connection closed\n');
+    }
+  }
+}
+
+// 執行初始化
+console.log('\n╔════════════════════════════════════════════╗');
+console.log('║  5 Why Analyzer - Database Initialization ║');
+console.log('╚════════════════════════════════════════════╝\n');
+
+initDatabase();