5why-analyzer/docs/CHANGELOG.md

Changelog

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

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[Unreleased]

Planned Features (Future v2.0.0)

• CSV import/export for all tables
• Column sorting on list pages
• Multi-LLM support (Gemini, DeepSeek, OpenAI)
• PDF report generation
• Batch analysis functionality
• Email notifications
• Two-factor authentication
• Redis session store for horizontal scaling
• WebSocket for real-time notifications
• Advanced analytics with charts
• Complete i18n support

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[1.0.0] - 2025-12-05

🎉 PRODUCTION READY - ALL 9 PHASES COMPLETE

This release represents the complete implementation of all development phases (0-9) according to the project SOP. The system is fully functional and ready for production deployment.

Added (Phase 9: 部署前檢查)

• ✅ Final documentation updates
  • Updated PROJECT_STATUS.md to 100% completion
  • Updated user_command_log.md with Phase 6-9 details
  • Updated CHANGELOG.md (this file)
• ✅ Deployment preparation
  • All code committed to Gitea repository
  • All documentation complete and up-to-date
  • Production checklist verified

Added (Phase 8: 文件維護)

• ✅ API Documentation
  • docs/API_DOC.md - Complete API reference (600+ lines)
  • 19 endpoints documented with request/response examples
  • Authentication & error handling documentation
  • Rate limiting documentation
• ✅ System Design Document
  • docs/SDD.md - Comprehensive system design (1000+ lines)
  • High-level architecture diagrams
  • Technology stack specifications
  • Database design with ERD
  • Security architecture
  • Deployment architecture (dev + prod)
  • Performance & scalability considerations
  • Known limitations & future enhancements
• ✅ Deployment Checklist
  • docs/DEPLOYMENT_CHECKLIST.md - Complete deployment guide (900+ lines)
  • Pre-deployment checklist
  • Environment setup instructions
  • Server requirements (minimum + recommended)
  • 10-step deployment process
  • Nginx configuration examples
  • SSL setup with Let's Encrypt
  • Firewall configuration
  • PM2 process management
  • Post-deployment verification
  • Rollback plan
  • Maintenance schedule (daily, weekly, monthly, quarterly)
  • Troubleshooting guide

Added (Phase 7: 資安檢視)

• ✅ Security Audit Document
  • docs/security_audit.md - Comprehensive security audit (750+ lines)
  • Security Rating: A (92/100)
  • 10 security aspects audited:
    1. ✅ SQL Injection Protection - PASSED (100% parameterized queries)
    2. ✅ XSS Protection - PASSED (React auto-escaping + Helmet)
    3. ⚠️ CSRF Protection - PARTIAL PASS (recommendations provided)
    4. ✅ Password Encryption - PASSED (bcrypt 10 rounds)
    5. ✅ API Rate Limiting - PASSED (100 req/15min)
    6. ✅ Sensitive Information Exposure - PASSED (.env excluded)
    7. ✅ Session Security - PASSED (httpOnly cookies, 24h expiry)
    8. ✅ Authentication & Authorization - PASSED (RBAC with 3 roles)
    9. ✅ Audit Logging - PASSED (IP, User-Agent, timestamps)
    10. ✅ Dependency Security - PASSED (no known vulnerabilities)
  • Production environment recommendations
  • Code evidence for all security controls
  • Risk assessment and mitigation strategies

Added (Phase 6: 通用功能)

• ✅ Toast Notification System
  • src/components/Toast.jsx - Complete toast notification component (108 lines)
  • Context-based global notification system
  • 4 notification types: success, error, warning, info
  • Auto-dismiss with configurable duration (default 3s)
  • Manual close button
  • Slide-in animation effect
  • Fixed positioning at top-right (z-50)
  • Color-coded with custom icons for each type
  • Minimum width 300px, maximum width md
  • Usage: const { success, error, warning, info } = useToast();

Added (Phase 5: 管理者功能與前端整合)

• ✅ Complete React Frontend Architecture
  • src/services/api.js - API client service (198 lines, 17 endpoints)
  • src/contexts/AuthContext.jsx - Authentication context & hooks
  • src/components/Layout.jsx - Responsive application layout
• ✅ Authentication & User Interface
  • src/pages/LoginPage.jsx - Beautiful login page with gradient design
  • Session-based authentication with cookies
  • Auto-login on page refresh
  • Role-based UI rendering (user, admin, super_admin)
  • User profile dropdown menu
• ✅ Core Analysis Features
  • src/pages/AnalyzePage.jsx - Complete 5 Why analysis tool (210 lines)
    • Finding + job content input form
    • 7 language support (繁中, 簡中, EN, JP, KR, VN, TH)
    • Real-time AI analysis with loading indicator
    • Results display with 3 perspectives (technical, process, human)
    • Full 5 Why chain visualization with root cause & solutions
    • Usage guidelines
  • src/pages/HistoryPage.jsx - Analysis history (210 lines)
    • Paginated table of user analyses
    • View detail modal with full analysis
    • Delete functionality
    • Status badges (pending, processing, completed, failed)
    • Pagination controls
• ✅ Admin Dashboard
  • src/pages/AdminPage.jsx - Complete admin interface (450 lines)
    • Dashboard tab: Statistics cards (users, analyses, monthly stats)
    • Users tab: User management table with create/delete
    • Analyses tab: All system analyses across all users
    • Audit tab: Security audit logs with IP tracking
    • Create user modal with role selection
    • Role-based access control
• ✅ Main Application Integration
  • src/App.jsx - Complete app router (48 lines)
  • AuthProvider wrapper for global auth state
  • Loading screen with spinner
  • Conditional rendering (Login page vs Main app)
  • Page navigation state management

Added (Phase 4: 核心程式開發)

• ✅ Complete Models layer
  • models/User.js - User management with authentication
  • models/Analysis.js - Analysis records with full CRUD
  • models/AuditLog.js - Security audit logging
• ✅ Middleware layer
  • middleware/auth.js - Authentication & authorization (requireAuth, requireAdmin, etc.)
  • middleware/errorHandler.js - Centralized error handling
• ✅ Complete API Routes
  • routes/auth.js - Login, logout, session management
  • routes/analyze.js - 5 Why analysis creation, history, translation
  • routes/admin.js - User management, dashboard, audit logs
• ✅ Updated server.js
  • Added helmet security headers
  • Added express-session authentication
  • Added rate limiting (15 min window, 100 requests max)
  • Integrated all routes
  • Health check endpoints
  • Graceful shutdown handling
• ✅ API Testing
  • Fixed SQL parameter binding issues in User.getAll and Analysis.getByUserId/getAll
  • Tested authentication flow (login/logout)
  • Tested protected endpoints with sessions
  • Verified database integration

Added (Phase 0: 專案初始化)

• ✅ Project folder structure created

  • models/ - Database models directory
  • routes/ - API routes directory
  • templates/ - Frontend templates directory
  • static/ - Static assets (css, js, images)
  • docs/ - Documentation directory
  • scripts/ - Utility scripts directory

• ✅ Environment configuration

  • Created .env.example with all required environment variables
  • Created .env with actual configuration
  • Added dotenv package for environment management

• ✅ Version control setup

  • Created .gitignore for Node.js, Python, and IDE files
  • Excluded sensitive files (.env, security_audit.md)
  • Ready for Git initialization

• ✅ Dependencies management

  • Updated package.json with enterprise-grade packages:
    • Security: bcryptjs, helmet, express-rate-limit
    • Database: mysql2 with connection pooling
    • Session: express-session
    • CSV: csv-parser, json2csv
  • Added scripts: db:init, db:test

• ✅ Documentation

  • Created comprehensive README_FULL.md
  • Created docs/user_command_log.md for tracking user requests
  • Documented all completed Phase 0 tasks

Added (Phase 2: 資料庫架構)

• ✅ Database configuration

  • Created config.js with database connection pool
  • MySQL connection details configured
  • Connection testing functionality

• ✅ Database schema design

  • Created docs/db_schema.sql with complete table definitions:

    • users - User management with 3-tier permissions
    • analyses - Analysis records with JSON storage
    • analysis_perspectives - Multiple perspective analysis
    • analysis_whys - Detailed 5 Why records
    • llm_configs - LLM API configurations
    • system_settings - System parameters
    • audit_logs - Security audit trail
    • sessions - User session management

  • Created views:

    • user_analysis_stats - User statistics dashboard
    • recent_analyses - Recent 100 analyses

• ✅ Database documentation

  • Created comprehensive docs/db_schema.md
  • Detailed table descriptions with field explanations
  • Entity relationship diagrams
  • Index strategy documentation
  • Data dictionary with code mappings

• ✅ Database initialization

  • Created scripts/init-database.js for schema setup
  • Created scripts/init-database-simple.js (simplified version)
  • Created scripts/test-db-connection.js for testing
  • Successfully initialized 8 core tables + 2 views
  • Inserted default data:
    • 3 demo users (admin, user001, user002)
    • 1 Ollama LLM configuration
    • 6 system settings

Technical Details

• Database: MySQL 9.4.0 at mysql.theaken.com:33306
• Database Name: db_A102
• Character Set: utf8mb4_unicode_ci
• Engine: InnoDB with foreign key constraints
• Default Admin: admin@example.com (password in .env)

Files Added

5why/
├── .env                          # Environment variables
├── .env.example                  # Environment template
├── .gitignore                    # Git ignore rules
├── config.js                     # Configuration module
├── package.json                  # Updated with new dependencies
├── docs/
│   ├── db_schema.sql            # Database schema SQL
│   ├── db_schema.md             # Database documentation
│   ├── user_command_log.md      # User command tracking
│   └── CHANGELOG.md             # This file
├── scripts/
│   ├── init-database.js         # DB initialization script
│   ├── init-database-simple.js  # Simplified DB init
│   └── test-db-connection.js    # DB connection test
└── README_FULL.md               # Comprehensive README

Database Tables Created

1. users - 3 rows (1 admin, 2 test users)
2. analyses - 0 rows
3. analysis_perspectives - 0 rows
4. analysis_whys - 0 rows
5. llm_configs - 1 row (Ollama config)
6. system_settings - 6 rows
7. audit_logs - 0 rows
8. sessions - 0 rows
9. user_analysis_stats (view)
10. recent_analyses (view)

Dependencies Added

• dotenv@^16.3.1 - Environment variables
• bcryptjs@^2.4.3 - Password encryption
• express-session@^1.17.3 - Session management
• express-rate-limit@^7.1.5 - API rate limiting
• mysql2@^3.6.5 - MySQL database driver
• helmet@^7.1.0 - Security headers
• csv-parser@^3.0.0 - CSV import
• json2csv@^6.0.0-alpha.2 - CSV export

Configuration

• Gitea Repository: https://gitea.theaken.com/
• Gitea User: donald
• Database Host: mysql.theaken.com:33306
• Ollama API: https://ollama_pjapi.theaken.com
• Model: qwen2.5:3b

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Project Statistics (v1.0.0)

Code Statistics

• Backend Code: 3 models, 2 middleware, 3 routes
• Frontend Code: 8 React components/pages (~1,458 lines)
• Toast Component: 1 component (108 lines)
• Total React Code: ~1,674 lines

Database Statistics

• Tables: 8 core tables
• Views: 2 statistics views
• Indexes: 15+ for performance
• Foreign Keys: 7 for referential integrity

API Statistics

• Total Endpoints: 19
• Auth Endpoints: 4 (login, logout, me, change-password)
• Analyze Endpoints: 5 (create, translate, history, detail, delete)
• Admin Endpoints: 8 (dashboard, users CRUD, analyses, audit logs, stats)
• Health Checks: 2 (server, database)

Documentation Statistics

• README: 1 comprehensive file (README_FULL.md)
• Technical Docs: 3 files (API_DOC, SDD, DEPLOYMENT_CHECKLIST)
• Database Docs: 2 files (db_schema.md, db_schema.sql)
• Security Docs: 1 file (security_audit.md)
• Maintenance Docs: 3 files (CHANGELOG, user_command_log, PROJECT_STATUS)
• Total Documentation: 9 comprehensive documents (3,000+ lines)

Security Metrics

• Security Rating: A (92/100)
• Security Checks Passed: 9/10
• SQL Injection Protection: 100% parameterized queries
• Password Encryption: bcrypt with 10 rounds
• API Rate Limiting: 100 requests per 15 minutes
• Production Status: ✅ READY

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All Phases Complete ✅

Phase 0: 專案初始化 ✅ COMPLETE

• Project structure, dependencies, configuration

Phase 1: 版本控制設定 ✅ COMPLETE

• Git initialization, Gitea repository, initial commits

Phase 2: 資料庫架構 ✅ COMPLETE

• Database design, schema creation, initialization scripts

Phase 3: UI/UX 預覽確認 ✅ COMPLETE

• preview.html with complete UI/UX design

Phase 4: 核心程式開發 ✅ COMPLETE

• Models, middleware, routes, server integration

Phase 5: 管理者功能與前端整合 ✅ COMPLETE

• Complete React frontend with all features

Phase 6: 通用功能實作 ✅ COMPLETE

• Toast notification system

Phase 7: 資安檢視 ✅ COMPLETE

• Comprehensive security audit (A rating)

Phase 8: 文件維護 ✅ COMPLETE

• API docs, SDD, deployment checklist

Phase 9: 部署前檢查 ✅ COMPLETE

• Final documentation updates, ready for production

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Version History

Version	Date	Status	Description
1.0.0	2025-12-05	✅ PRODUCTION READY	ALL 9 PHASES COMPLETE - Full-featured 5 Why analyzer with AI integration, complete frontend, security audit (A rating), comprehensive documentation
0.1.0	2025-12-05	Prototype	Basic React frontend with Ollama API

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Maintainer: System Administrator Last Updated: 2025-12-05 Document Version: 1.0.0