package models

import (
	"context"
	"time"
)

// ChannelMember represents a user's membership in a channel.
type ChannelMember struct {
	Base

	ChannelID string    `json:"channelId"`
	UserID    string    `json:"userId"`
	Modes     string    `json:"modes"`
	JoinedAt  time.Time `json:"joinedAt"`
	Nick      string    `json:"nick"` // denormalized from users table
}

// User returns the full User for this membership.
func (cm *ChannelMember) User(ctx context.Context) (*User, error) {
	if ul := cm.GetUserLookup(); ul != nil {
		return ul.GetUserByID(ctx, cm.UserID)
	}

	return nil, ErrUserLookupNotAvailable
}

// Channel returns the full Channel for this membership.
func (cm *ChannelMember) Channel(ctx context.Context) (*Channel, error) {
	if cl := cm.GetChannelLookup(); cl != nil {
		return cl.GetChannelByID(ctx, cm.ChannelID)
	}

	return nil, ErrChannelLookupNotAvailable
}