##############################################################################
# Copyright (c) 2018 Sawyer Bergeron, Parker Berberian, and others.
#
# All rights reserved. This program and the accompanying materials
# are made available under the terms of the Apache License, Version 2.0
# which accompanies this distribution, and is available at
# http://www.apache.org/licenses/LICENSE-2.0
##############################################################################


from workflow.booking_workflow import Booking_Resource_Select, SWConfig_Select, Booking_Meta, OPNFV_Select
from workflow.resource_bundle_workflow import Define_Hardware, Define_Nets, Resource_Meta_Info
from workflow.sw_bundle_workflow import Config_Software, Define_Software, SWConf_Resource_Select
from workflow.snapshot_workflow import Select_Host_Step, Image_Meta_Step
from workflow.opnfv_workflow import Pick_Installer, Assign_Network_Roles, Assign_Host_Roles, OPNFV_Resource_Select, MetaInfo
from workflow.models import Confirmation_Step

import uuid

import logging
logger = logging.getLogger(__name__)


class MetaStep(object):

    UNTOUCHED = 0
    INVALID = 100
    VALID = 200

    def set_invalid(self, message, code=100):
        self.valid = code
        self.message = message

    def set_valid(self, message, code=200):
        self.valid = code
        self.message = message

    def __init__(self, *args, **kwargs):
        self.short_title = "error"
        self.skip_step = 0
        self.valid = 0
        self.hidden = False
        self.message = ""
        self.id = uuid.uuid4()

    def to_json(self):
        return {
            'title': self.short_title,
            'skip': self.skip_step,
            'valid': self.valid,
            'message': self.message,
        }

    def __str__(self):
        return "metastep: " + str(self.short_title)

    def __hash__(self):
        return hash(self.id)

    def __eq__(self, other):
        return self.id.int == other.id.int

    def __ne__(self, other):
        return self.id.int != other.id.int


class Workflow(object):
    def __init__(self, steps, repository):
        self.repository = repository
        self.steps = steps
        self.active_index = 0


class WorkflowFactory():
    booking_steps = [
        Booking_Resource_Select,
        SWConfig_Select,
        Booking_Meta,
        OPNFV_Select,
    ]

    resource_steps = [
        Define_Hardware,
        Define_Nets,
        Resource_Meta_Info,
    ]

    config_steps = [
        SWConf_Resource_Select,
        Define_Software,
        Config_Software,
    ]

    snapshot_steps = [
        Select_Host_Step,
        Image_Meta_Step,
    ]

    opnfv_steps = [
        OPNFV_Resource_Select,
        Pick_Installer,
        Assign_Network_Roles,
        Assign_Host_Roles,
        MetaInfo
    ]

    def conjure(self, workflow_type=None, repo=None):
        workflow_types = [
            self.booking_steps,
            self.resource_steps,
            self.config_steps,
            self.snapshot_steps,
            self.opnfv_steps,
        ]

        steps = self.make_steps(workflow_types[workflow_type], repository=repo)
        return steps

    def create_workflow(self, workflow_type=None, repo=None):
        steps = self.conjure(workflow_type, repo)
        c_step = self.make_step(Confirmation_Step, repo)
        steps.append(c_step)
        return Workflow(steps, repo)

    def make_steps(self, step_types, repository):
        steps = []
        for step_type in step_types:
            steps.append(self.make_step(step_type, repository))

        return steps

    def make_step(self, step_type, repository):
        iden = step_type.description + step_type.title + step_type.template
        return step_type(iden, repository)