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

• 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

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[1.0.0] - 2025-12-05

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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Next Steps (Phase 1-9)

Phase 1: 版本控制設定 (Pending)

• Initialize Git repository
• Create Gitea remote repository
• Configure Git remote origin
• Create .gitkeep in empty folders
• Initial commit and push

Phase 3: UI/UX 預覽確認 (Pending)

• Create preview.html (frontend only, no database)
• Confirm UI/UX design with user
• Get user approval before proceeding

Phase 4: 核心程式開發 (Pending)

• Create app.js or enhanced server.js
• Implement database models in models/
• Implement API routes in routes/
• Integrate with database
• Add error handling
• Add logging

Phase 5: 管理者功能開發 (Pending)

• Admin dashboard at /admin
• User management (CRUD)
• LLM configuration interface
• System settings interface
• Audit log viewer

Phase 6: 通用功能實作 (Pending)

• Error handling modal
• CSV import/export for all tables
• Column sorting on list pages
• Loading indicators
• Success/failure notifications

Phase 7: 資安檢視 (Pending)

• Create security_audit.md
• Check SQL Injection protection
• Check XSS protection
• Verify CSRF tokens
• Verify password encryption
• Verify API rate limiting
• Check for sensitive information leaks
• Verify session security

Phase 8: 文件維護 (Pending)

• Create/update SDD.md with version number
• Update user_command_log.md
• Update CHANGELOG.md (this file)
• Create API_DOC.md

Phase 9: 部署前檢查 (Pending)

• Verify .env.example is complete
• Update requirements.txt or package.json
• Remove sensitive information from code
• Run functionality tests
• Final commit and push to Gitea

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Version History

Version	Date	Status	Description
1.0.0	2025-12-05	In Progress	Initial version with Phase 0 & 2 completed
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