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router.go
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router.go
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package role
import (
"context"
"encoding/json"
"log"
"strings"
"github.com/ThreeDotsLabs/watermill/message"
"github.com/jinzhu/copier"
"github.com/program-world-labs/pwlogger"
"github.com/program-world-labs/DDDGo/internal/application/role"
"github.com/program-world-labs/DDDGo/internal/domain/domainerrors"
"github.com/program-world-labs/DDDGo/internal/domain/event"
)
type Routes struct {
e event.TypeMapper
s role.IService
l pwlogger.Interface
}
func NewRoleRoutes(e event.TypeMapper, r role.IService, l pwlogger.Interface) *Routes {
// Register event
e.Register((*event.RoleCreatedEvent)(nil))
e.Register((*event.RoleDescriptionChangedEvent)(nil))
e.Register((*event.RolePermissionUpdatedEvent)(nil))
return &Routes{e: e, s: r, l: l}
}
func (u *Routes) Handler(msg *message.Message) error {
log.Println("RoleRoutes received message", msg.UUID)
// Transform message to domain event
domainEvent := &event.DomainEvent{}
err := json.Unmarshal(msg.Payload, domainEvent)
if err != nil {
return err
}
// Json Unmarshal: To Domain Event Type
eventType, err := u.e.NewInstance(domainEvent.EventType)
if err != nil {
return err
}
// data map to JSON
jsonData, err := json.Marshal(domainEvent.Data)
if err != nil {
panic(err)
}
// Json data to domain event
err = json.Unmarshal(jsonData, &eventType)
if err != nil {
panic(err)
}
switch domainEvent.EventType {
case "RoleCreatedEvent":
err = u.create(msg.Context(), eventType.(*event.RoleCreatedEvent))
if err != nil {
return err
}
default:
return domainerrors.Wrap(ErrorCodeHandleMessage, err)
}
return nil
}
func (u *Routes) create(ctx context.Context, event *event.RoleCreatedEvent) error {
// Transform event data to service input
// info := role.CreatedInput{}
info := role.UpdatedInput{}
if err := copier.Copy(&info, event); err != nil {
return domainerrors.Wrap(ErrorCodeCopyToInput, err)
}
info.Permissions = strings.Join(event.Permissions, ",")
// _, err := u.s.CreateRole(ctx, &info)
_, err := u.s.UpdateRole(ctx, &info)
if err != nil {
return err
}
return nil
}