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| 1 | +# CLAUDE.md |
| 2 | + |
| 3 | +This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository. |
| 4 | + |
| 5 | +## Project Overview |
| 6 | + |
| 7 | +This is a Rails 7.1.5.1 API application that serves as the backend for NativeAppTemplate iOS/Android mobile applications. It's a multi-tenant SaaS application with token-based authentication, role-based authorization, and RESTful API endpoints. |
| 8 | + |
| 9 | +## Development Commands |
| 10 | + |
| 11 | +### Initial Setup |
| 12 | +```bash |
| 13 | +bin/setup # Installs all dependencies, prepares database, builds assets |
| 14 | +``` |
| 15 | + |
| 16 | +### Running the Application |
| 17 | +```bash |
| 18 | +bin/dev # Starts Rails server, CSS watcher, JS bundler, and Sidekiq workers |
| 19 | +``` |
| 20 | + |
| 21 | +### Testing |
| 22 | +```bash |
| 23 | +bin/rails test # Run all tests |
| 24 | +bin/rails test test/path/to/test.rb # Run specific test file |
| 25 | +bin/rails test test/path/to/test.rb:42 # Run specific test line |
| 26 | +``` |
| 27 | + |
| 28 | +### Linting & Security |
| 29 | +```bash |
| 30 | +bin/rubocop # Ruby code linting |
| 31 | +bundle exec erblint --lint-all # ERB template linting |
| 32 | +bin/brakeman # Security vulnerability scanning |
| 33 | +``` |
| 34 | + |
| 35 | +### Database Operations |
| 36 | +```bash |
| 37 | +bin/rails db:create db:migrate # Create and migrate database |
| 38 | +bin/rails db:seed_fu # Load seed data (uses seed-fu gem) |
| 39 | +bin/rails db:reset # Drop, create, migrate, and seed |
| 40 | +``` |
| 41 | + |
| 42 | +### Console & Debugging |
| 43 | +```bash |
| 44 | +bin/rails console # Rails console |
| 45 | +bin/rails dbconsole # Database console |
| 46 | +``` |
| 47 | + |
| 48 | +## Architecture & Key Concepts |
| 49 | + |
| 50 | +### API Structure |
| 51 | +- All API endpoints are under `/api/v1/` namespace |
| 52 | +- Token-based authentication using `devise_token_auth` |
| 53 | +- Separate namespaces for different user types (e.g., `/api/v1/shopkeeper/`) |
| 54 | +- JSON API specification for responses using `jsonapi-serializer` |
| 55 | +- CORS enabled for cross-origin requests |
| 56 | + |
| 57 | +### Authentication & Authorization |
| 58 | +- **Authentication**: Devise Token Auth with headers-based token management |
| 59 | +- **Authorization**: Pundit policies for resource-level permissions |
| 60 | +- **Multi-tenancy**: acts_as_tenant for complete data isolation between accounts |
| 61 | +- **RBAC**: Role and Permission models for fine-grained access control |
| 62 | + |
| 63 | +### Key Models & Relationships |
| 64 | +- `Account` - Top-level tenant/organization |
| 65 | +- `Shopkeeper` - Main user type (belongs to Account) |
| 66 | +- `Shop` - Core business entity (belongs to Account) |
| 67 | +- `ItemTag` - Belongs to Shop with unique name constraint |
| 68 | +- `Role` & `Permission` - Authorization system |
| 69 | +- State machines implemented with AASM gem |
| 70 | + |
| 71 | +### Background Processing |
| 72 | +- Sidekiq for background jobs with Redis backend |
| 73 | +- Queue priorities: critical (10), mailers (5), default (2), low (1) |
| 74 | +- Monitor at `/madmin/sidekiq` in development |
| 75 | + |
| 76 | +### Testing Strategy |
| 77 | +- Minitest for all tests (models, controllers, integration) |
| 78 | +- WebMock for stubbing external HTTP requests |
| 79 | +- Parallel test execution supported |
| 80 | +- API integration tests for all endpoints |
| 81 | + |
| 82 | +### Development Server Configuration |
| 83 | +- Server binds to specific IP: `192.168.1.21:3000` (not localhost) |
| 84 | +- Mailbin for email testing at `/mailbin` |
| 85 | +- Admin interface at `/madmin` |
| 86 | +- Hot reload for CSS/JS changes via yarn watchers |
| 87 | + |
| 88 | +### Important Conventions |
| 89 | +- Use `seed-fu` for database seeding (not standard Rails seeds) |
| 90 | +- API responses follow JSON API specification |
| 91 | +- All API controllers inherit from `Api::V1::BaseController` |
| 92 | +- Tenant isolation handled automatically via `AccountMiddleware` |
| 93 | +- Image processing with Active Storage and `image_processing` gem |
| 94 | + |
| 95 | +### Deployment |
| 96 | +- Configured for Render.com deployment |
| 97 | +- Build script: `bin/render-build.sh` |
| 98 | +- Web server: `bin/render-start.sh` |
| 99 | +- Background workers: `bin/render-start-sidekiq.sh` |
| 100 | + |
| 101 | +## Common Development Tasks |
| 102 | + |
| 103 | +### Creating New API Endpoints |
| 104 | +1. Add route in `config/routes.rb` under appropriate namespace |
| 105 | +2. Create controller inheriting from `Api::V1::BaseController` |
| 106 | +3. Add Pundit policy in `app/policies/` |
| 107 | +4. Create serializer in `app/serializers/` |
| 108 | +5. Write integration tests in `test/integration/` |
| 109 | + |
| 110 | +### Working with Multi-tenancy |
| 111 | +- All models should include `acts_as_tenant :account` |
| 112 | +- Current account accessible via `current_account` in controllers |
| 113 | +- Tenant switching handled by `AccountMiddleware` |
| 114 | + |
| 115 | +### Adding Background Jobs |
| 116 | +1. Create job class in `app/jobs/` |
| 117 | +2. Specify queue with `queue_as :default` (or :critical, :low, etc.) |
| 118 | +3. Call with `MyJob.perform_later(args)` |
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