from panda3d.core import *
from otp.ai.AIBaseGlobal import *
from direct.distributed.ClockDelta import *
from direct.distributed import DistributedObjectAI
from . import Level
from direct.directnotify import DirectNotifyGlobal
from . import EntityCreatorAI
from direct.showbase.PythonUtil import Functor, weightedChoice

class DistributedLevelAI(DistributedObjectAI.DistributedObjectAI, Level.Level):
    notify = DirectNotifyGlobal.directNotify.newCategory('DistributedLevelAI')

    def __init__(self, air, zoneId, entranceId, avIds):
        DistributedObjectAI.DistributedObjectAI.__init__(self, air)
        Level.Level.__init__(self)
        self.zoneId = zoneId
        self.entranceId = entranceId
        if len(avIds) <= 0 or len(avIds) > 4:
            self.notify.warning('How do we have this many avIds? avIds: %s' % avIds)
        self.avIdList = avIds
        self.numPlayers = len(self.avIdList)
        self.presentAvIds = list(self.avIdList)
        self.notify.debug('expecting avatars: %s' % str(self.avIdList))
        if __dev__:
            self.modified = 0

    def setLevelSpec(self, levelSpec):
        self.levelSpec = levelSpec

    def generate(self, levelSpec=None):
        self.notify.debug('generate')
        DistributedObjectAI.DistributedObjectAI.generate(self)
        if levelSpec == None:
            levelSpec = self.levelSpec
        self.initializeLevel(levelSpec)
        self.sendUpdate('setZoneIds', [self.zoneIds])
        self.sendUpdate('setStartTimestamp', [self.startTimestamp])
        if __dev__:
            pass
        return

    def getLevelZoneId(self):
        return self.zoneId

    def getPlayerIds(self):
        return self.avIdList

    def getEntranceId(self):
        return self.entranceId

    def getBattleCreditMultiplier(self):
        return 1.0

    def delete(self, deAllocZone=True):
        self.notify.debug('delete')
        if __dev__:
            self.removeAutosaveTask()
        self.destroyLevel()
        self.ignoreAll()
        if deAllocZone:
            self.air.deallocateZone(self.zoneId)
        DistributedObjectAI.DistributedObjectAI.delete(self)

    def initializeLevel(self, levelSpec):
        self.startTime = globalClock.getRealTime()
        self.startTimestamp = globalClockDelta.localToNetworkTime(self.startTime, bits=32)
        lol = list(zip([1] * levelSpec.getNumScenarios(), list(range(levelSpec.getNumScenarios()))))
        scenarioIndex = weightedChoice(lol)
        Level.Level.initializeLevel(self, self.doId, levelSpec, scenarioIndex)
        if __dev__:
            self.accept(self.editMgrEntity.getSpecSaveEvent(), self.saveSpec)
        for avId in self.avIdList:
            self.acceptOnce(self.air.getAvatarExitEvent(avId), Functor(self.handleAvatarDisconnect, avId))

        self.allToonsGoneBarrier = self.beginBarrier('allToonsGone', self.avIdList, 3 * 24 * 60 * 60, self.allToonsGone)

    def handleAvatarDisconnect(self, avId):
        try:
            self.presentAvIds.remove(avId)
            DistributedLevelAI.notify.warning('av %s has disconnected' % avId)
        except:
            DistributedLevelAI.notify.warning('got disconnect for av %s, not in list' % avId)

        if not self.presentAvIds:
            self.allToonsGone([])

    def _levelControlsRequestDelete(self):
        return True

    def allToonsGone(self, toonsThatCleared):
        DistributedLevelAI.notify.info('allToonsGone')
        if hasattr(self, 'allToonsGoneBarrier'):
            self.ignoreBarrier(self.allToonsGoneBarrier)
            del self.allToonsGoneBarrier
        for avId in self.avIdList:
            self.ignore(self.air.getAvatarExitEvent(avId))

        if self._levelControlsRequestDelete():
            self.requestDelete()

    def createEntityCreator(self):
        return EntityCreatorAI.EntityCreatorAI(level=self)

    def setOuch(self, penalty):
        avId = self.air.getAvatarIdFromSender()
        av = self.air.doId2do.get(avId)
        self.notify.debug('setOuch %s' % penalty)
        if av and penalty > 0:
            av.takeDamage(penalty)
            if av.getHp() <= 0:
                av.inventory.zeroInv()
                av.d_setInventory(av.inventory.makeNetString())

    def requestCurrentLevelSpec(self, specHash, entTypeRegHash):
        senderId = self.air.getAvatarIdFromSender()
        self.notify.info('av %s: specHash %s, entTypeRegHash %s' % (senderId, specHash, entTypeRegHash))
        if not __dev__:
            self.notify.info('client is in dev mode and we are not')
            self.sendUpdateToAvatarId(senderId, 'setSpecDeny', [
             'AI server is not running in dev mode. Set want-dev to false on your client or true on the AI.'])
            return
        srvHash = self.levelSpec.entTypeReg.getHashStr()
        self.notify.info('srv entTypeRegHash %s' % srvHash)
        if srvHash != entTypeRegHash:
            self.sendUpdateToAvatarId(senderId, 'setSpecDeny', [
             'EntityTypeRegistry hashes do not match! (server:%s, client:%s' % (srvHash, entTypeRegHash)])
            return
        if self.levelSpec.stringHash() != specHash:
            self.notify.info('spec hashes do not match, sending our spec')
            spec = self.levelSpec
            useDisk = simbase.air._specByDisk
        else:
            self.notify.info('spec hashes match, sending null spec')
            spec = None
            useDisk = 0
        specStr = repr(spec)
        from direct.directutil import DistributedLargeBlobSenderAI
        largeBlob = DistributedLargeBlobSenderAI.DistributedLargeBlobSenderAI(self.air, self.zoneId, senderId, specStr, useDisk=useDisk)
        self.sendUpdateToAvatarId(senderId, 'setSpecSenderDoId', [largeBlob.doId])
        return

    if __dev__:

        def setAttribChange(self, entId, attribName, value, username='SYSTEM'):
            DistributedLevelAI.notify.info('setAttribChange(%s): %s, %s = %s' % (username, entId, attribName, repr(value)))
            self.sendUpdate('setAttribChange', [
             entId, attribName, repr(value), username])
            self.levelSpec.setAttribChange(entId, attribName, value, username)
            self.modified = 1
            self.scheduleAutosave()

        AutosavePeriod = simbase.config.GetFloat('level-autosave-period-minutes', 5)

        def scheduleAutosave(self):
            if hasattr(self, 'autosaveTask'):
                return
            self.autosaveTaskName = self.uniqueName('autosaveSpec')
            self.autosaveTask = taskMgr.doMethodLater(DistributedLevelAI.AutosavePeriod * 60, self.autosaveSpec, self.autosaveTaskName)

        def removeAutosaveTask(self):
            if hasattr(self, 'autosaveTask'):
                taskMgr.remove(self.autosaveTaskName)
                del self.autosaveTask

        def autosaveSpec(self, task=None):
            self.removeAutosaveTask()
            if self.modified:
                DistributedLevelAI.notify.info('autosaving spec')
                filename = self.levelSpec.getFilename()
                filename = '%s.autosave' % filename
                self.levelSpec.saveToDisk(filename, makeBackup=0)

        def saveSpec(self, task=None):
            DistributedLevelAI.notify.info('saving spec')
            self.removeAutosaveTask()
            if not self.modified:
                DistributedLevelAI.notify.info('no changes to save')
                return
            self.levelSpec.saveToDisk()
            self.modified = 0