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>
2025-12-05 18:29:29 +08:00
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+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+---
+
+## [Unreleased]
+
+### Planned Features
+- [ ] User authentication and authorization system
+- [ ] Admin dashboard with user management
+- [ ] Analysis history with pagination
+- [ ] CSV import/export functionality
+- [ ] Multi-LLM support (Gemini, DeepSeek, OpenAI)
+- [ ] PDF report generation
+- [ ] Batch analysis functionality
+- [ ] Email notifications
+- [ ] Advanced search and filtering
+- [ ] API rate limiting per user
+- [ ] Two-factor authentication
+
+---
+
+## [1.0.0] - 2025-12-05
+
+### 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
+
+---
+
+## 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
+
+---
+
+## 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 |
+
+---
+
+**Maintainer**: System Administrator
+**Last Updated**: 2025-12-05
+**Document Version**: 1.0.0