package channel

import (
	"time"
)

// Status represents the channel status
type Status int

const (
	StatusActive Status = iota
	StatusArchived
	StatusDeleted
)

// Channel represents a voice channel
type Channel struct {
	ID          string
	Name        string
	Description string
	IsPublic    bool
	OwnerID     string
	MemberIDs   map[string]bool
	MaxUsers    int32
	CreatedAt   time.Time
	UpdatedAt   time.Time
	Status      Status
}

// NewChannel creates a new channel
func NewChannel(id, name string, ownerID string) *Channel {
	now := time.Now()
	return &Channel{
		ID:        id,
		Name:      name,
		IsPublic:  true,
		OwnerID:   ownerID,
		MemberIDs: make(map[string]bool),
		MaxUsers:  0, // unlimited
		CreatedAt: now,
		UpdatedAt: now,
		Status:    StatusActive,
	}
}

// IsFull checks if channel is at capacity
func (c *Channel) IsFull() bool {
	return c.MaxUsers > 0 && int32(len(c.MemberIDs)) >= c.MaxUsers
}

// AddMember adds a member to the channel
func (c *Channel) AddMember(userID string) {
	c.MemberIDs[userID] = true
	c.UpdatedAt = time.Now()
}

// RemoveMember removes a member from the channel
func (c *Channel) RemoveMember(userID string) {
	delete(c.MemberIDs, userID)
	c.UpdatedAt = time.Now()
}

// IsMember checks if user is a member
func (c *Channel) IsMember(userID string) bool {
	return c.MemberIDs[userID]
}

// GetMembers returns a slice of member IDs
func (c *Channel) GetMembers() []string {
	members := make([]string, 0, len(c.MemberIDs))
	for userID := range c.MemberIDs {
		members = append(members, userID)
	}
	return members
}

// MemberCount returns the number of members
func (c *Channel) MemberCount() int {
	return len(c.MemberIDs)
}