hunk.code_window: package stacks
   import (
   	"net/http"
   	"strconv"
  
hunk.labels: keep keep add keep keep keep
hunk.after_edit: 	"log"
  
hunk.file_path: api/http/handler/stacks/stack_delete.go
hunk.type: add
file: package stacks
  
  import (
  	"net/http"
  	"strconv"
  
  	"github.com/portainer/portainer"
  	httperror "github.com/portainer/portainer/http/error"
  	"github.com/portainer/portainer/http/proxy"
  	"github.com/portainer/portainer/http/request"
  	"github.com/portainer/portainer/http/response"
  	"github.com/portainer/portainer/http/security"
  )
  
  // DELETE request on /api/stacks/:id?external=<external>&endpointId=<endpointId>
  // If the external query parameter is set to true, the id route variable is expected to be
  // the name of an external stack as a string.
  func (handler *Handler) stackDelete(w http.ResponseWriter, r *http.Request) *httperror.HandlerError {
  	stackID, err := request.RetrieveRouteVariableValue(r, "id")
  	if err != nil {
  		return &httperror.HandlerError{http.StatusBadRequest, "Invalid stack identifier route variable", err}
  	}
  
  	externalStack, _ := request.RetrieveBooleanQueryParameter(r, "external", true)
  	if externalStack {
  		return handler.deleteExternalStack(r, w, stackID)
  	}
  
  	id, err := strconv.Atoi(stackID)
  	if err != nil {
  		return &httperror.HandlerError{http.StatusBadRequest, "Invalid stack identifier route variable", err}
  	}
  
  	stack, err := handler.StackService.Stack(portainer.StackID(id))
  	if err == portainer.ErrObjectNotFound {
  		return &httperror.HandlerError{http.StatusNotFound, "Unable to find a stack with the specified identifier inside the database", err}
  	} else if err != nil {
  		return &httperror.HandlerError{http.StatusInternalServerError, "Unable to find a stack with the specified identifier inside the database", err}
  	}
  
  	resourceControl, err := handler.ResourceControlService.ResourceControlByResourceID(stack.Name)
  	if err != nil && err != portainer.ErrObjectNotFound {
  		return &httperror.HandlerError{http.StatusInternalServerError, "Unable to retrieve a resource control associated to the stack", err}
  	}
  
  	securityContext, err := security.RetrieveRestrictedRequestContext(r)
  	if err != nil {
  		return &httperror.HandlerError{http.StatusInternalServerError, "Unable to retrieve info from request context", err}
  	}
  
  	if resourceControl != nil {
  		if !securityContext.IsAdmin && !proxy.CanAccessStack(stack, resourceControl, securityContext.UserID, securityContext.UserMemberships) {
  			return &httperror.HandlerError{http.StatusForbidden, "Access denied to resource", portainer.ErrResourceAccessDenied}
  		}
  	}
  
  	// TODO: this is a work-around for stacks created with Portainer version >= 1.17.1
  	// The EndpointID property is not available for these stacks, this API endpoint
  	// can use the optional EndpointID query parameter to set a valid endpoint identifier to be
  	// used in the context of this request.
  	endpointID, err := request.RetrieveNumericQueryParameter(r, "endpointId", true)
  	if err != nil {
  		return &httperror.HandlerError{http.StatusBadRequest, "Invalid query parameter: endpointId", err}
  	}
  	endpointIdentifier := stack.EndpointID
  	if endpointID != 0 {
  		endpointIdentifier = portainer.EndpointID(endpointID)
  	}
  
  	endpoint, err := handler.EndpointService.Endpoint(endpointIdentifier)
  	if err == portainer.ErrObjectNotFound {
  		return &httperror.HandlerError{http.StatusNotFound, "Unable to find the endpoint associated to the stack inside the database", err}
  	} else if err != nil {
  		return &httperror.HandlerError{http.StatusInternalServerError, "Unable to find the endpoint associated to the stack inside the database", err}
  	}
  
  	err = handler.deleteStack(stack, endpoint)
  	if err != nil {
  		return &httperror.HandlerError{http.StatusInternalServerError, err.Error(), err}
  	}
  
  	err = handler.StackService.DeleteStack(portainer.StackID(id))
  	if err != nil {
  		return &httperror.HandlerError{http.StatusInternalServerError, "Unable to remove the stack from the database", err}
  	}
  
  	err = handler.FileService.RemoveDirectory(stack.ProjectPath)
  	if err != nil {
  		return &httperror.HandlerError{http.StatusInternalServerError, "Unable to remove stack files from disk", err}
  	}
  
  	return response.Empty(w)
  }
  
  func (handler *Handler) deleteExternalStack(r *http.Request, w http.ResponseWriter, stackName string) *httperror.HandlerError {
  	stack, err := handler.StackService.StackByName(stackName)
  	if err != nil && err != portainer.ErrObjectNotFound {
  		return &httperror.HandlerError{http.StatusInternalServerError, "Unable to check for stack existence inside the database", err}
  	}
  	if stack != nil {
  		return &httperror.HandlerError{http.StatusBadRequest, "A stack with this name exists inside the database. Cannot use external delete method", portainer.ErrStackNotExternal}
  	}
  
  	endpointID, err := request.RetrieveNumericQueryParameter(r, "endpointId", false)
  	if err != nil {
  		return &httperror.HandlerError{http.StatusBadRequest, "Invalid query parameter: endpointId", err}
  	}
  
  	endpoint, err := handler.EndpointService.Endpoint(portainer.EndpointID(endpointID))
  	if err == portainer.ErrObjectNotFound {
  		return &httperror.HandlerError{http.StatusNotFound, "Unable to find the endpoint associated to the stack inside the database", err}
  	} else if err != nil {
  		return &httperror.HandlerError{http.StatusInternalServerError, "Unable to find the endpoint associated to the stack inside the database", err}
  	}
  
  	err = handler.requestBouncer.EndpointAccess(r, endpoint)
  	if err != nil {
  		return &httperror.HandlerError{http.StatusForbidden, "Permission denied to access endpoint", portainer.ErrEndpointAccessDenied}
  	}
  
  	stack = &portainer.Stack{
  		Name: stackName,
  		Type: portainer.DockerSwarmStack,
  	}
  
  	err = handler.deleteStack(stack, endpoint)
  	if err != nil {
  		return &httperror.HandlerError{http.StatusInternalServerError, "Unable to delete stack", err}
  	}
  
  	return response.Empty(w)
  }
  
  func (handler *Handler) deleteStack(stack *portainer.Stack, endpoint *portainer.Endpoint) error {
  	if stack.Type == portainer.DockerSwarmStack {
  		return handler.SwarmStackManager.Remove(stack, endpoint)
  	}
  	return handler.ComposeStackManager.Down(stack, endpoint)
  }
  