Skip to content

IMPLEMENTATION_PLAN.md

Latest commit

 

History

History
544 lines (476 loc) · 14.6 KB

IMPLEMENTATION_PLAN.md

File metadata and controls

544 lines (476 loc) · 14.6 KB

Byte 4 Bite - Implementation Plan

Project Overview

Byte 4 Bite is a free and open platform for community pantries of all shapes and sizes. It is designed to allow a community pantry to manage and maintain inventory in the most easiest and frictionless way possible.

Core Features

  • Admin tool for pantry coordinators to manage inventory
  • User login and authentication system
  • Shopping cart functionality (selection only, no payment processing)
  • Order fulfillment tracking for pantry operators
  • Pickup workflow system

Technology Stack

Backend

  • Language: Go (Golang)
  • Framework: Gin or Echo (HTTP web framework)
  • Database: PostgreSQL
  • ORM: GORM (Go Object-Relational Mapping)
  • Authentication: JWT (JSON Web Tokens)

Frontend

  • Framework: React with TypeScript
  • Build Tool: Vite
  • State Management: React Context API or Redux Toolkit
  • UI Library: TailwindCSS or Material-UI
  • HTTP Client: Axios

Additional Services

  • Email: SMTP integration (configurable provider)
  • SMS: Twilio or similar (optional, configurable)
  • File Storage: Local filesystem or S3-compatible storage

Deployment

  • Containerization: Docker & Docker Compose
  • Binary Distribution: Standalone executables for Windows/Linux
  • Database Migrations: golang-migrate or GORM AutoMigrate

Database Schema (Initial Design)

Users

  • id (UUID, primary key)
  • email (string, unique)
  • password_hash (string)
  • first_name (string)
  • last_name (string)
  • phone (string, optional)
  • role (enum: admin, user)
  • pantry_id (foreign key to pantries)
  • created_at (timestamp)
  • updated_at (timestamp)

Pantries

  • id (UUID, primary key)
  • name (string)
  • address (string)
  • city (string)
  • state (string)
  • zip_code (string)
  • contact_email (string)
  • contact_phone (string)
  • is_active (boolean)
  • created_at (timestamp)
  • updated_at (timestamp)

Categories

  • id (UUID, primary key)
  • name (string)
  • description (text)
  • pantry_id (foreign key to pantries)

Items

  • id (UUID, primary key)
  • name (string)
  • description (text)
  • category_id (foreign key to categories)
  • pantry_id (foreign key to pantries)
  • quantity (integer)
  • low_stock_threshold (integer)
  • unit (string, e.g., "lb", "oz", "count")
  • image_url (string, optional)
  • is_available (boolean)
  • created_at (timestamp)
  • updated_at (timestamp)

Carts

  • id (UUID, primary key)
  • user_id (foreign key to users)
  • pantry_id (foreign key to pantries)
  • status (enum: active, submitted, cancelled)
  • created_at (timestamp)
  • updated_at (timestamp)

CartItems

  • id (UUID, primary key)
  • cart_id (foreign key to carts)
  • item_id (foreign key to items)
  • quantity (integer)
  • created_at (timestamp)

Orders

  • id (UUID, primary key)
  • cart_id (foreign key to carts)
  • user_id (foreign key to users)
  • pantry_id (foreign key to pantries)
  • status (enum: pending, preparing, ready, picked_up, cancelled)
  • notes (text, optional)
  • assigned_to (foreign key to users, nullable)
  • submitted_at (timestamp)
  • ready_at (timestamp, nullable)
  • picked_up_at (timestamp, nullable)
  • created_at (timestamp)
  • updated_at (timestamp)

Donations

  • id (UUID, primary key)
  • pantry_id (foreign key to pantries)
  • donor_name (string)
  • donor_email (string, optional)
  • donor_phone (string, optional)
  • amount (decimal, optional for monetary donations)
  • description (text)
  • donation_date (date)
  • receipt_sent (boolean)
  • created_at (timestamp)

Notifications

  • id (UUID, primary key)
  • user_id (foreign key to users)
  • type (enum: email, sms)
  • subject (string)
  • message (text)
  • sent (boolean)
  • sent_at (timestamp, nullable)
  • created_at (timestamp)

Implementation Phases

Phase 1: Project Foundation (Week 1)

Backend Setup

  1. Initialize Go module and project structure

    byte4bite/
├── cmd/
│   └── server/
│       └── main.go
├── internal/
│   ├── api/
│   ├── auth/
│   ├── config/
│   ├── database/
│   ├── models/
│   ├── repositories/
│   └── services/
├── pkg/
├── migrations/
├── go.mod
└── go.sum

  2. Set up PostgreSQL database connection

  3. Implement configuration management (environment variables)

  4. Create initial database migrations

  5. Set up logging and error handling middleware

Frontend Setup

  1. Initialize React + Vite + TypeScript project

    frontend/
├── src/
│   ├── components/
│   ├── pages/
│   ├── services/
│   ├── context/
│   ├── hooks/
│   ├── types/
│   ├── utils/
│   ├── App.tsx
│   └── main.tsx
├── public/
├── package.json
└── vite.config.ts

  2. Set up routing (React Router)

  3. Configure TailwindCSS or UI library

  4. Create base layout components

  5. Set up API client with Axios

DevOps Setup

  1. Create Dockerfile for backend
  2. Create Dockerfile for frontend
  3. Create docker-compose.yml for local development
  4. Set up .env.example files
  5. Create basic README with setup instructions

Phase 2: Core Authentication & User Management (Week 2)

Backend

  1. Implement user model and repository
  2. Create JWT token generation and validation
  3. Build authentication middleware
  4. Implement endpoints:
    • POST /api/auth/register
    • POST /api/auth/login
    • POST /api/auth/refresh
    • POST /api/auth/logout
    • GET /api/auth/me
    • PUT /api/users/profile
    • POST /api/auth/forgot-password
    • POST /api/auth/reset-password

Frontend

  1. Create login page
  2. Create registration page
  3. Build authentication context/state management
  4. Implement protected routes
  5. Create user profile page
  6. Add password reset functionality
  7. Build navigation with user menu

Phase 3: Inventory Management (Admin) (Week 3-4)

Backend

  1. Implement category, item models and repositories
  2. Create role-based access control middleware
  3. Implement endpoints:
    • GET /api/admin/categories
    • POST /api/admin/categories
    • PUT /api/admin/categories/:id
    • DELETE /api/admin/categories/:id
    • GET /api/admin/items
    • POST /api/admin/items
    • PUT /api/admin/items/:id
    • DELETE /api/admin/items/:id
    • PATCH /api/admin/items/:id/quantity
    • GET /api/admin/items/low-stock

Frontend (Admin Dashboard)

  1. Create admin layout with sidebar navigation
  2. Build category management page (CRUD)
  3. Build item management page with:
    • Item list with search and filters
    • Add/edit item forms
    • Bulk quantity updates
    • Low stock alerts display
  4. Implement image upload for items
  5. Create inventory reports view

Phase 4: Shopping Cart System (Week 5)

Backend

  1. Implement cart and cart items models
  2. Create cart service with business logic
  3. Implement endpoints:
    • GET /api/carts/current
    • POST /api/carts/items
    • PUT /api/carts/items/:id
    • DELETE /api/carts/items/:id
    • POST /api/carts/checkout
    • DELETE /api/carts/current

Frontend (User Interface)

  1. Create items browsing page with:
    • Category filters
    • Search functionality
    • Item cards with availability
  2. Build shopping cart component
  3. Implement cart management:
    • Add to cart functionality
    • Update quantities
    • Remove items
    • Cart summary
  4. Create checkout page
  5. Add cart persistence (sync with backend)

Phase 5: Order Fulfillment System (Week 6)

Backend

  1. Implement order model and repository
  2. Create order service with status workflow
  3. Implement endpoints:
    • GET /api/admin/orders
    • GET /api/admin/orders/:id
    • PATCH /api/admin/orders/:id/status
    • PUT /api/admin/orders/:id/assign
    • GET /api/users/orders
    • GET /api/users/orders/:id

Frontend

  1. Create admin orders dashboard:
    • Orders list with filters (status, date)
    • Order details view
    • Status update controls
    • Order assignment
    • Print order fulfillment sheets
  2. Build user order history page:
    • Past orders list
    • Order status tracking
    • Order details

Phase 6: Multi-Pantry Support (Week 7)

Backend

  1. Implement pantry model and repository
  2. Update existing models to support multiple pantries
  3. Implement pantry-scoped data access
  4. Create endpoints:
    • GET /api/pantries
    • POST /api/admin/pantries
    • PUT /api/admin/pantries/:id
    • GET /api/pantries/:id
    • PATCH /api/admin/pantries/:id/activate

Frontend

  1. Create pantry management interface (super admin)
  2. Add pantry selector for users
  3. Update all views to be pantry-scoped
  4. Create pantry admin role separation
  5. Build pantry settings page

Phase 7: Notifications System (Week 8)

Backend

  1. Implement notification service
  2. Set up email templates
  3. Configure SMTP integration
  4. Add SMS integration (Twilio)
  5. Create notification triggers:
    • Order ready for pickup
    • Order status changes
    • Low stock alerts (admin)
    • Welcome emails
  6. Implement endpoints:
    • GET /api/users/notification-preferences
    • PUT /api/users/notification-preferences

Frontend

  1. Create notification preferences page
  2. Add in-app notification display
  3. Build notification history view
  4. Add notification badges/indicators

Phase 8: Reporting & Analytics (Week 9)

Backend

  1. Create analytics service
  2. Implement reporting endpoints:
    • GET /api/admin/reports/usage
    • GET /api/admin/reports/inventory
    • GET /api/admin/reports/items-distributed
    • GET /api/admin/reports/users-served
    • GET /api/admin/reports/export (CSV/PDF)

Frontend

  1. Create analytics dashboard with:
    • Usage statistics
    • Popular items charts
    • Users served metrics
    • Inventory trends
  2. Build report generation interface
  3. Implement data visualization (charts)
  4. Add export functionality

Phase 9: Donation Tracking (Week 10)

Backend

  1. Implement donation model and repository
  2. Create donation service
  3. Implement endpoints:
    • GET /api/admin/donations
    • POST /api/admin/donations
    • PUT /api/admin/donations/:id
    • DELETE /api/admin/donations/:id
    • POST /api/admin/donations/:id/receipt

Frontend

  1. Create donation management interface
  2. Build donation entry forms
  3. Implement donor management
  4. Create receipt generation and email
  5. Build donation reports and history

Phase 10: Deployment & Documentation (Week 11-12)

Deployment

  1. Create production Docker configurations
  2. Build standalone binaries for:
    • Windows (amd64)
    • Linux (amd64, arm64)
  3. Create installation scripts:
    • install.sh (Linux)
    • install.ps1 (Windows)
  4. Set up database migration scripts
  5. Create backup/restore utilities
  6. Write production configuration guide

Documentation

  1. Write comprehensive README.md
  2. Create installation guide
  3. Write user manual:
    • How to shop and create carts
    • How to pick up orders
  4. Write admin guide:
    • Inventory management
    • Order fulfillment
    • Pantry configuration
  5. Create developer documentation:
    • Architecture overview
    • API documentation
    • Database schema
    • Contributing guide
  6. Create troubleshooting guide
  7. Add environment variable reference

Project Structure (Final)

byte4bite/
├── backend/
│   ├── cmd/
│   │   └── server/
│   │       └── main.go
│   ├── internal/
│   │   ├── api/
│   │   │   ├── handlers/
│   │   │   ├── middleware/
│   │   │   └── routes/
│   │   ├── auth/
│   │   ├── config/
│   │   ├── database/
│   │   ├── models/
│   │   ├── repositories/
│   │   ├── services/
│   │   └── utils/
│   ├── pkg/
│   ├── migrations/
│   ├── scripts/
│   ├── go.mod
│   ├── go.sum
│   ├── Dockerfile
│   └── .env.example
├── frontend/
│   ├── src/
│   │   ├── components/
│   │   ├── pages/
│   │   ├── services/
│   │   ├── context/
│   │   ├── hooks/
│   │   ├── types/
│   │   ├── utils/
│   │   ├── App.tsx
│   │   └── main.tsx
│   ├── public/
│   ├── package.json
│   ├── vite.config.ts
│   ├── Dockerfile
│   └── .env.example
├── docs/
│   ├── installation.md
│   ├── user-guide.md
│   ├── admin-guide.md
│   ├── api.md
│   └── architecture.md
├── scripts/
│   ├── install.sh
│   ├── install.ps1
│   ├── backup.sh
│   └── restore.sh
├── docker-compose.yml
├── docker-compose.prod.yml
├── README.md
└── LICENSE

Key Technical Decisions

Why Go for Backend?

  • Single binary deployment (no runtime dependencies)
  • Excellent performance and low resource usage
  • Strong concurrency support
  • Easy cross-compilation for Windows/Linux
  • Growing community and ecosystem
  • Perfect for community pantries with limited technical resources

Why React for Frontend?

  • Most popular frontend framework (easy to find developers)
  • Large ecosystem of components and tools
  • Excellent documentation and community support
  • TypeScript support for better code quality

Why PostgreSQL?

  • Robust, reliable, and well-tested
  • Excellent support in Go ecosystem
  • JSONB support for flexible data
  • Strong data integrity guarantees
  • Free and open-source

Development Best Practices

  1. Code Quality

    • Write unit tests for services and repositories
    • Use linters (golangci-lint for Go, ESLint for React)
    • Follow idiomatic Go patterns
    • Use TypeScript strictly (no any types)

  2. Security

    • Hash passwords with bcrypt
    • Use prepared statements (prevent SQL injection)
    • Validate all user inputs
    • Implement rate limiting
    • Use HTTPS in production
    • Secure JWT tokens with strong secrets

  3. Performance

    • Add database indexes on frequently queried fields
    • Implement pagination for large lists
    • Use connection pooling
    • Optimize images (compression, lazy loading)
    • Cache static assets

  4. Maintainability

    • Keep functions small and focused
    • Use meaningful variable and function names
    • Document complex business logic
    • Version your API endpoints
    • Maintain a changelog

Next Steps

  1. Review and approve this implementation plan
  2. Set up development environment
  3. Begin Phase 1: Project Foundation
  4. Establish regular check-ins and milestone reviews

Timeline Estimate

  • Total Duration: 11-12 weeks for MVP with all requested features
  • Minimum Viable Product (Core Features Only): 6-8 weeks
  • Each Phase: 1-2 weeks depending on complexity

This timeline assumes a single full-time developer. With a team, phases can be parallelized to reduce overall time.