import tasks.packages
from common.tasks import volume
from common.tasks import loopback
from common.tasks import partitioning
from common.tasks import filesystem
from common.tasks import bootstrap
from common.tasks import security
from common.tasks import network
from common.tasks import initd
from common.tasks import cleanup
from common.tasks import workspace


def initialize():
	pass


def validate_manifest(data, validator, error):
	import os.path
	schema_path = os.path.normpath(os.path.join(os.path.dirname(__file__), 'manifest-schema.json'))
	validator(data, schema_path)


def resolve_tasks(tasklist, manifest):
	from common.task_sets import base_set
	from common.task_sets import volume_set
	from common.task_sets import mounting_set
	from common.task_sets import apt_set
	from common.task_sets import locale_set
	tasklist.add(*base_set)
	tasklist.add(*volume_set)
	tasklist.add(*mounting_set)
	tasklist.add(*apt_set)
	tasklist.add(*locale_set)

	from common.task_sets import bootloader_set
	tasklist.add(*bootloader_set.get(manifest.system['bootloader']))

	if manifest.volume['partitions']['type'] != 'none':
		from common.task_sets import partitioning_set
		tasklist.add(*partitioning_set)

	tasklist.add(tasks.packages.DefaultPackages,

	             loopback.Create,

	             security.EnableShadowConfig,
	             network.RemoveDNSInfo,
	             network.ConfigureNetworkIF,
	             network.RemoveHostname,
	             initd.AddSSHKeyGeneration,
	             initd.InstallInitScripts,
	             cleanup.ClearMOTD,
	             cleanup.CleanTMP,

	             loopback.MoveImage)

	if manifest.bootstrapper.get('guest_additions', False):
		from tasks import guest_additions
		tasklist.add(guest_additions.CheckGuestAdditionsPath,
		             guest_additions.AddGuestAdditionsPackages,
		             guest_additions.InstallGuestAdditions)

	if manifest.bootstrapper.get('tarball', False):
		tasklist.add(bootstrap.MakeTarball)

	from common.task_sets import get_fs_specific_set
	tasklist.add(*get_fs_specific_set(manifest.volume['partitions']))

	if 'boot' in manifest.volume['partitions']:
		from common.task_sets import boot_partition_set
		tasklist.add(*boot_partition_set)


def resolve_rollback_tasks(tasklist, tasks_completed, manifest):
	completed = [type(task) for task in tasks_completed]

	def counter_task(task, counter):
		if task in completed and counter not in completed:
			tasklist.add(counter)

	counter_task(loopback.Create, volume.Delete)
	counter_task(filesystem.CreateMountDir, filesystem.DeleteMountDir)
	counter_task(partitioning.MapPartitions, partitioning.UnmapPartitions)
	counter_task(filesystem.MountRoot, filesystem.UnmountRoot)
	counter_task(volume.Attach, volume.Detach)
	counter_task(workspace.CreateWorkspace, workspace.DeleteWorkspace)