tracks/internal/models/context.go

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Rewrite Tracks application in Golang This commit introduces a complete rewrite of the Tracks GTD application in Go (Golang), providing a modern, performant alternative to the Ruby on Rails implementation. ## Architecture & Technology Stack - Language: Go 1.21+ - Web Framework: Gin - ORM: GORM with SQLite/MySQL/PostgreSQL support - Authentication: JWT with bcrypt password hashing - Clean Architecture: Separated models, services, handlers, and middleware ## Implemented Features ### Core Models - User: Authentication and user management - Context: GTD contexts (@home, @work, etc.) - Project: Project grouping and tracking - Todo: Task management with state machine (active, completed, deferred, pending) - Tag: Flexible tagging system with polymorphic associations - Dependency: Todo dependencies with circular dependency detection - Preference: User preferences and settings - Note: Project notes - Attachment: File attachment support (model only) - RecurringTodo: Recurring task template (model only) ### API Endpoints **Authentication:** - POST /api/auth/login - User login - POST /api/auth/register - User registration - POST /api/auth/logout - User logout - GET /api/me - Get current user **Todos:** - GET /api/todos - List todos with filtering - POST /api/todos - Create todo - GET /api/todos/:id - Get todo details - PUT /api/todos/:id - Update todo - DELETE /api/todos/:id - Delete todo - POST /api/todos/:id/complete - Mark as completed - POST /api/todos/:id/activate - Mark as active - POST /api/todos/:id/defer - Defer to future date - POST /api/todos/:id/dependencies - Add dependency - DELETE /api/todos/:id/dependencies/:successor_id - Remove dependency **Projects:** - GET /api/projects - List projects - POST /api/projects - Create project - GET /api/projects/:id - Get project details - PUT /api/projects/:id - Update project - DELETE /api/projects/:id - Delete project - POST /api/projects/:id/complete - Complete project - POST /api/projects/:id/activate - Activate project - POST /api/projects/:id/hide - Hide project - POST /api/projects/:id/review - Mark as reviewed - GET /api/projects/:id/stats - Get project statistics **Contexts:** - GET /api/contexts - List contexts - POST /api/contexts - Create context - GET /api/contexts/:id - Get context details - PUT /api/contexts/:id - Update context - DELETE /api/contexts/:id - Delete context - POST /api/contexts/:id/hide - Hide context - POST /api/contexts/:id/activate - Activate context - POST /api/contexts/:id/close - Close context - GET /api/contexts/:id/stats - Get context statistics ### Business Logic **Todo State Management:** - Active: Ready to work on - Completed: Finished tasks - Deferred: Future actions (show_from date) - Pending: Blocked by dependencies **Dependency Management:** - Create blocking relationships between todos - Automatic state transitions when blocking todos complete - Circular dependency detection - Automatic unblocking when prerequisites complete **Tag System:** - Polymorphic tagging for todos and recurring todos - Automatic tag creation on first use - Tag cloud support **Project & Context Tracking:** - State management (active, hidden, closed/completed) - Statistics and health indicators - Review tracking for projects ### Infrastructure **Configuration:** - Environment-based configuration - Support for SQLite, MySQL, and PostgreSQL - Configurable JWT secrets and token expiry - Flexible server settings **Database:** - GORM for ORM - Automatic migrations - Connection pooling - Multi-database support **Authentication & Security:** - JWT-based authentication - Bcrypt password hashing - Secure cookie support - Token refresh mechanism **Docker Support:** - Multi-stage Dockerfile for optimized builds - Docker Compose with PostgreSQL - Volume mounting for data persistence - Production-ready configuration ## Project Structure ``` cmd/tracks/ # Application entry point internal/ config/ # Configuration management database/ # Database setup and migrations handlers/ # HTTP request handlers middleware/ # Authentication middleware models/ # Database models services/ # Business logic layer ``` ## Documentation - README_GOLANG.md: Comprehensive documentation - .env.example: Configuration template - API documentation included in README - Code comments for complex logic ## Future Work The following features from the original Rails app are not yet implemented: - Recurring todo instantiation logic - Email integration (Mailgun/CloudMailin) - Advanced statistics and analytics - Import/Export functionality (CSV, YAML, XML) - File upload handling for attachments - Mobile views - RSS/Atom feeds - iCalendar export ## Benefits Over Rails Version - Performance: Compiled binary, lower resource usage - Deployment: Single binary, no runtime dependencies - Type Safety: Compile-time type checking - Concurrency: Better handling of concurrent requests - Memory: Lower memory footprint - Portability: Easy cross-platform compilation ## Testing The code structure supports testing, though tests are not yet implemented. Future work includes adding unit and integration tests.
2025-11-05 10:46:59 +00:00
package models
import (
"time"
"gorm.io/gorm"
)
// ContextState represents the state of a context
type ContextState string
const (
ContextStateActive ContextState = "active"
ContextStateHidden ContextState = "hidden"
ContextStateClosed ContextState = "closed"
)
// Context represents a GTD context (e.g., @home, @work, @phone)
type Context struct {
ID uint `gorm:"primaryKey" json:"id"`
UserID uint `gorm:"not null;index" json:"user_id"`
Name string `gorm:"not null;size:255" json:"name"`
Position int `gorm:"default:1" json:"position"`
State ContextState `gorm:"type:varchar(20);default:'active'" json:"state"`
CreatedAt time.Time `json:"created_at"`
UpdatedAt time.Time `json:"updated_at"`
DeletedAt gorm.DeletedAt `gorm:"index" json:"-"`
// Associations
User User `gorm:"foreignKey:UserID" json:"-"`
Todos []Todo `gorm:"foreignKey:ContextID" json:"todos,omitempty"`
RecurringTodos []RecurringTodo `gorm:"foreignKey:ContextID" json:"recurring_todos,omitempty"`
}
// BeforeCreate sets default values
func (c *Context) BeforeCreate(tx *gorm.DB) error {
if c.State == "" {
c.State = ContextStateActive
}
if c.Position == 0 {
c.Position = 1
}
return nil
}
// IsActive returns true if the context is active
func (c *Context) IsActive() bool {
return c.State == ContextStateActive
}
// IsHidden returns true if the context is hidden
func (c *Context) IsHidden() bool {
return c.State == ContextStateHidden
}
// IsClosed returns true if the context is closed
func (c *Context) IsClosed() bool {
return c.State == ContextStateClosed
}
// Hide sets the context state to hidden
func (c *Context) Hide() {
c.State = ContextStateHidden
}
// Activate sets the context state to active
func (c *Context) Activate() {
c.State = ContextStateActive
}
// Close sets the context state to closed
func (c *Context) Close() {
c.State = ContextStateClosed
}