gochat/backend/internal/model/channelable.go

package model

// Channelable defines the interface for polymorphic channel configurations.
// Each inbox has a channel_type (e.g. "Channel::WebWidget") and an associated
// channel model that implements this interface.
// Reference: P2B M2 polymorphic channel pattern
type Channelable interface {
	// GetInboxID returns the InboxID foreign key for this channel.
	GetInboxID() uint
	// GetChannelType returns the channel type string (e.g. "Channel::WebWidget").
	GetChannelType() InboxChannelType
	// TableName returns the GORM table name for this channel model.
	TableName() string
}

// ChannelRegistry maps channel type strings to factory functions that create Channelable instances.
// This map is populated during app initialization (in app.go) to avoid import cycles
// between the model and model/channel packages.
// Usage: register from app.go via model.RegisterChannelFactory(...)
var ChannelRegistry = map[string]func() Channelable{}

// RegisterChannelFactory adds a channel type factory to the registry.
// Called from app.go during initialization to wire up model/channel types
// without creating a circular import between model ↔ model/channel.
func RegisterChannelFactory(channelType string, factory func() Channelable) {
	ChannelRegistry[channelType] = factory
}