package domain

import (
	"time"
)

// Event represents a system event
type Event struct {
	ID        string                 `json:"id"`
	Type      EventType              `json:"type"`
	EntityID  string                 `json:"entity_id"`
	OrgID     string                 `json:"org_id"`
	UserID    string                 `json:"user_id,omitempty"`
	Timestamp time.Time              `json:"timestamp"`
	Payload   map[string]interface{} `json:"payload"`
}

// EventType represents different types of events
type EventType string

const (
	EventTypeResourceFlowCreated EventType = "resource_flow.created"
	EventTypeResourceFlowUpdated EventType = "resource_flow.updated"
	EventTypeResourceFlowDeleted EventType = "resource_flow.deleted"
	EventTypeOrganizationUpdated EventType = "organization.updated"
	EventTypeMatchCreated        EventType = "match.created"
	EventTypeMatchUpdated        EventType = "match.updated"
	EventTypeMatchStatusChanged  EventType = "match.status_changed"
	EventTypeMatchDeleted        EventType = "match.deleted"
	EventTypeNegotiationAdded    EventType = "negotiation.added"
	EventTypeNegotiationUpdated  EventType = "negotiation.updated"
)

// EventBus defines the interface for event publishing and subscribing
type EventBus interface {
	Publish(event Event) error
	Subscribe(pattern string, handler func(Event) error) error
	Close() error
}