package engine

import (
	"time"

	"github.com/google/uuid"
)

type Status byte

const (
	StatusPending   Status = 'P'
	StatusCompleted Status = 'C'
	StatusDeleted   Status = 'D'
	StatusRecurring Status = 'R'
)

type Priority int

const (
	PriorityLow     Priority = 0
	PriorityDefault Priority = 1
	PriorityMedium  Priority = 2
	PriorityHigh    Priority = 3
)

type Task struct {
	// Identity
	UUID uuid.UUID
	ID   int

	// Core fields
	Status      Status
	Description string
	Project     *string
	Priority    Priority

	// Timestamps
	Created   time.Time
	Modified  time.Time
	Start     *time.Time
	End       *time.Time
	Due       *time.Time
	Scheduled *time.Time
	Wait      *time.Time
	Until     *time.Time

	// Recurrence (parent-child approach)
	RecurrenceDuration *time.Duration
	ParentUUID         *uuid.UUID

	// Derived fields (not stored in DB)
	Tags []string
}

// timeNow returns current time (allows mocking in tests)
var timeNow = time.Now