package domain

import (
	"fmt"
	"strings"
	"time"

	"gitlab.com/unboundsoftware/eventsourced/eventsourced"
)

type SubGraph struct {
	eventsourced.BaseAggregate
	Ref       string
	Service   string
	Url       *string
	WSUrl     *string
	Sdl       string
	CreatedBy string
	CreatedAt time.Time
	ChangedBy string
	ChangedAt time.Time
}

func (s *SubGraph) Apply(event eventsourced.Event) error {
	switch e := event.(type) {
	case *SubGraphUpdated:
		if s.Ref == "" {
			s.CreatedBy = e.Initiator
			s.CreatedAt = e.When()
		}
		s.ChangedBy = e.Initiator
		s.ChangedAt = e.When()
		s.Ref = e.Ref
		s.Service = e.Service
		if e.Url != nil {
			url := strings.TrimSpace(*e.Url)
			s.Url = &url
		}
		if e.WSUrl != nil {
			url := strings.TrimSpace(*e.WSUrl)
			s.WSUrl = &url
		}
		s.Sdl = e.Sdl
	default:
		return fmt.Errorf("unexpected event type: %+v", event)
	}
	return nil
}

var _ eventsourced.Aggregate = &SubGraph{}