// Package buildlog reads the builder's log as mesh-delivery's parts that follow it read it: the indexer and the view.
package buildlog

import (
	"encoding/json"

	"git.novox.be/novox/mesh-sdk/go/delivery"
)

// IsBuildEntry says whether an entry of the builder's log is a build's start or end, read from its event alone, so an
// entry of another kind (a build's narration, build.said) is passed over before its form is read. One whose event
// cannot be read is taken as a build's, so its decoding says what is wrong with it.
func IsBuildEntry(value []byte) bool {
	var e struct {
		Event *string `json:"event"`
	}
	if json.Unmarshal(value, &e) != nil || e.Event == nil {
		return true
	}
	return *e.Event == delivery.BuildStartedEvent || *e.Event == delivery.BuildEndedEvent
}