entities

type Entity interface {
	Save() Entity
	Delete()
}

type RecurTask struct {
	gorm.Model
	Deadline   time.Time `gorm:"index:idx_member"`
	IsFinished bool
	StackID    uint `gorm:"index:idx_member"`
	TaskID     uint
}

type Stack struct {
	gorm.Model
	Title            string `gorm:"notnull"`
	PendingTaskCount int
	Tasks            []Task
}

type Step struct {
	gorm.Model
	Title      string
	IsFinished bool
	TaskID     uint
}

type Task struct {
	gorm.Model
	Title              string `gorm:"notnull"`
	Description        string
	Steps              []Step
	Deadline           time.Time
	Priority           int //3: High, 2: Mid, 1: Low, 0: No Priority
	IsFinished         bool
	IsRecurring        bool
	StartTime          time.Time //Applicable only for recurring tasks
	RecurrenceInterval int       // in days
	RecurChildren      []RecurTask
	StackID            uint
}