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package bug
import (
"encoding/json"
"fmt"
"github.com/MichaelMure/git-bug/entity"
"github.com/MichaelMure/git-bug/entity/dag"
)
const (
_ dag.OperationType = iota
CreateOp
SetTitleOp
AddCommentOp
SetStatusOp
LabelChangeOp
EditCommentOp
NoOpOp
SetMetadataOp
)
// Operation define the interface to fulfill for an edit operation of a Bug
type Operation interface {
dag.Operation
// Apply the operation to a Snapshot to create the final state
Apply(snapshot *Snapshot)
}
// make sure that package external operations do conform to our interface
var _ Operation = &dag.NoOpOperation[*Snapshot]{}
var _ Operation = &dag.SetMetadataOperation[*Snapshot]{}
func operationUnmarshaller(raw json.RawMessage, resolvers entity.Resolvers) (dag.Operation, error) {
var t struct {
OperationType dag.OperationType `json:"type"`
}
if err := json.Unmarshal(raw, &t); err != nil {
return nil, err
}
var op dag.Operation
switch t.OperationType {
case AddCommentOp:
op = &AddCommentOperation{}
case CreateOp:
op = &CreateOperation{}
case EditCommentOp:
op = &EditCommentOperation{}
case LabelChangeOp:
op = &LabelChangeOperation{}
case NoOpOp:
op = &dag.NoOpOperation[*Snapshot]{}
case SetMetadataOp:
op = &dag.SetMetadataOperation[*Snapshot]{}
case SetStatusOp:
op = &SetStatusOperation{}
case SetTitleOp:
op = &SetTitleOperation{}
default:
panic(fmt.Sprintf("unknown operation type %v", t.OperationType))
}
err := json.Unmarshal(raw, &op)
if err != nil {
return nil, err
}
return op, nil
}
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