// removeAction removes an action (flag, like, etc) from an Item.
func removeAction(c *web.Context, userID string, action string, targetID string) error {
// Get the Target by targetID.
target, err := service.GetItemByID(c, targetID)
if err != nil {
return err
}
// Get the actions that the target already has.
var actions []interface{}
actions, ok := target.Data[action].([]interface{})
if !ok {
return ErrActionNotFound
}
// Remove the action in the target's action array.
for i, usrID := range actions {
u, ok := usrID.(string)
if !ok {
continue
}
if u == userID {
target.Data[action] = append(actions[:i], actions[i+1:]...)
break
}
}
// Update the target with the new actions's slice.
if err = service.UpsertItem(c, target); err != nil {
return err
}
return nil
}
// addAction ads an action (flag, like, etc) perform by an user UserID on a Target.
func addAction(c *web.Context, userID string, action string, targetID string) error {
// Get the Target's data by targetID.
target, err := service.GetItemByID(c, targetID)
if err != nil {
return err
}
// Get the actions that the target already has.
// If it has no action 'action' then create the field to store the new one.
var actions []interface{}
actions, ok := target.Data[action].([]interface{})
if !ok {
target.Data[action] = make([]interface{}, 0)
}
// Store the action in the target's action array.
var found bool
for _, usrID := range actions {
u, ok := usrID.(string)
if !ok {
continue
}
if u == userID {
found = true
break
}
}
// If the user did not add that action before, then add the action for the user to the target.
if !found {
target.Data[action] = append(actions, userID)
}
// Update the target with the new actions's slice.
if err = service.UpsertItem(c, target); err != nil {
return err
}
return nil
}