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###############################################################################
import copy
from vistrails.core import debug
from vistrails.db.versions.v0_9_4.domain import DBVistrail, DBWorkflow, DBLog, DBGroup, DBModuleExec

def translateVistrail(_vistrail):
    def update_port_spec_spec(new_obj, translate_dict):
        return new_obj.db_sigstring
    def update_port_spec(new_obj, translate_dict):
        return new_obj.db_signature
    def update_workflow(old_obj, translate_dict):
        return DBWorkflow.update_version(old_obj.db_workflow, translate_dict)

    translate_dict = {'DBPortSpec': {'spec': update_port_spec_spec},
                      'DBPort': {'spec': update_port_spec},
                      'DBGroup': {'workflow': update_workflow}}

    vistrail = DBVistrail.update_version(_vistrail, translate_dict)
    vistrail.db_version = '0.9.4'
    return vistrail

def translateWorkflow(_workflow):
    def update_port_spec_spec(new_obj, translate_dict):
        return new_obj.db_sigstring
    def update_port_spec(new_obj, translate_dict):
        return new_obj.db_signature
    def update_workflow(old_obj, translate_dict):
        return DBWorkflow.update_version(old_obj.db_workflow, translate_dict)

    translate_dict = {'DBPortSpec': {'spec': update_port_spec_spec},
                      'DBPort': {'spec': update_port_spec},
                      'DBGroup': {'workflow': update_workflow}}

    workflow = DBWorkflow.update_version(_workflow, translate_dict)
    workflow.db_version = '0.9.4'
    return workflow

def translateLog(_log):
    def update_module_execs(old_obj, translate_dict):
        new_module_execs = []
        for obj in old_obj.db_items:
            if obj.vtType == 'module_exec':
                new_module_execs.append(DBModuleExec.update_version(obj, 
                                                            translate_dict))
            elif obj.vtType == 'group_exec':
                # cannot handle group execs
                debug.warning('Cannot translate group exec')
            elif obj.vtType == 'loop_exec':
                debug.warning('Cannot translate loop exec')
        return new_module_execs
    translate_dict = {'DBWorkflowExec': {'module_execs': update_module_execs}}
    log = DBLog.update_version(_log, translate_dict)
    log.db_version = '0.9.4'
    return log
