// Package entity holds group domain types. Persistence belongs in model.
package entity

const (
	StatusActive    Status = 1
	StatusDissolved Status = 2

	MaxNameLen         = 32
	MaxAnnouncementLen = 1024
	MaxRemarkLen       = 32
	MaxMembers         = 200
	ListDefault        = 20
	ListMax            = 100
	MemberListMax      = 200
	MaxCollageFaces    = 9
)

// Status is persisted as groups.status.
type Status int

func (s Status) Valid() bool {
	return s == StatusActive || s == StatusDissolved
}

// Group is a type-2 chat. ID is the AUTO_INCREMENT 群号; ConversationID is Snowflake.
type Group struct {
	ID             int64
	ConversationID int64
	Name           string
	Avatar         string
	Announcement   string
	OwnerID        int64
	MutedAll       bool
	MemberCount    int
	Status         Status
	CreatedAtMS    int64
	UpdatedAtMS    int64
}

func (g *Group) Active() bool {
	return g != nil && g.Status == StatusActive
}

func ClampLimit(limit int) int {
	if limit <= 0 {
		return ListDefault
	}
	if limit > ListMax {
		return ListMax
	}
	return limit
}

func ClampMemberLimit(limit int) int {
	if limit <= 0 {
		return MemberListMax
	}
	if limit > MemberListMax {
		return MemberListMax
	}
	return limit
}