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package bug
import (
"github.com/kevinburke/go.uuid"
)
// Bug hold the data of a bug thread, organized in a way close to
// how it will be persisted inside Git. This is the datastructure
// used for merge of two different version.
type Bug struct {
// Id used as unique identifier
Id uuid.UUID
// TODO: need a way to order bugs
// Probably a Lamport clock
Packs []OperationPack
Staging OperationPack
}
// Create a new Bug
func NewBug() (*Bug, error) {
// Creating UUID Version 4
id, err := uuid.ID4()
if err != nil {
return nil, err
}
return &Bug{
Id: id,
}, nil
}
// IsValid check if the Bug data is valid
func (bug *Bug) IsValid() bool {
// non-empty
if len(bug.Packs) == 0 && bug.Staging.IsEmpty() {
return false
}
// check if each pack is valid
for _, pack := range bug.Packs {
if !pack.IsValid() {
return false
}
}
// check if Staging is valid if needed
if !bug.Staging.IsEmpty() {
if !bug.Staging.IsValid() {
return false
}
}
// The very first Op should be a CREATE
firstOp := bug.firstOp()
if firstOp == nil || firstOp.OpType() != CREATE {
return false
}
// Check that there is no more CREATE op
it := NewOperationIterator(bug)
createCount := 0
for it.Next() {
if it.Value().OpType() == CREATE {
createCount++
}
}
if createCount != 1 {
return false
}
return true
}
func (bug *Bug) Append(op Operation) {
bug.Staging.Append(op)
}
func (bug *Bug) Commit() {
bug.Packs = append(bug.Packs, bug.Staging)
bug.Staging = OperationPack{}
}
func (bug *Bug) HumanId() string {
return bug.Id.String()
}
func (bug *Bug) firstOp() Operation {
for _, pack := range bug.Packs {
for _, op := range pack.Operations {
return op
}
}
if !bug.Staging.IsEmpty() {
return bug.Staging.Operations[0]
}
return nil
}
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