version_utils.py

import json
import urllib2
from directories import userCachePath, getDataDir
import os
import time
import base64  # @UnusedImport
from pymclevel.mclevelbase import PlayerNotFound
import urllib
from PIL import Image
from urllib2 import HTTPError
import atexit
import threading

#def getPlayerSkinURL(uuid):
#    try:
#        playerJSONResponse = urllib2.urlopen('https://sessionserver.mojang.com/session/minecraft/profile/{}'.format(uuid))
#        print playerJSONResponse
#        texturesJSON = json.loads(playerJSONResponse)['properties']
#        for prop in properties:
#            if prop['name'] == 'textures':
#                b64 = base64.b64decode(prop['value']);
#                print b64
#                return json.loads(b64)['textures']['SKIN']['url']
#    except:
#        raise

#print getPlayerSkinURL('4566e69fc90748ee8d71d7ba5aa00d20')


class __PlayerCache:
    
    SUCCESS = 0
    FAILED = 1

    def __convert(self):
        jsonFile = None
        fp = open(userCachePath)
        try:
            jsonFile = json.load(fp)
            fp.close()
        except ValueError:
            fp.close()
            # Assuming JSON file is corrupted, deletes file and creates new one
            os.remove(userCachePath)
            with open(userCachePath, 'w') as json_out:
                json.dump([], json_out)
        if jsonFile is not None:
            for old_player in jsonFile.keys():
                player = jsonFile[old_player]
                new_player = {"Playername": player["username"], "UUID (No Separator)": old_player.replace("-", ""),
                              "UUID (Separator)": old_player, "WasSuccessful": True, "Timstamp": player["timestamp"]}
                self._playerCacheList.append(new_player)
            self._save()
            print "Convert usercache.json"
            
    def fixAllOfPodshotsBugs(self):
        for player in self._playerCacheList:
            if "Timstamp" in player:
                player["Timestamp"] = player["Timstamp"]
                del player["Timstamp"]
        self._save()
    
    
    def __init__(self):
        self._playerCacheList = []
        if not os.path.exists(userCachePath):
            out = open(userCachePath, 'w') 
            json.dump(self._playerCacheList, out)
            out.close()
        f = open(userCachePath, 'r')
        line = f.readline()
        if line.startswith("{"):
            f.close()
            self.__convert()
        f.close()
        try:
            json_in = open(userCachePath)
            self._playerCacheList = json.load(json_in)
        except:
            print "usercache.json is corrupted"
            self._playerCacheList = []
        finally:
            json_in.close()
        self.fixAllOfPodshotsBugs()
        self.refresh_lock = threading.Lock()
        self.player_refreshing = threading.Thread(target=self._refreshAll)
        self.player_refreshing.daemon = True
        self.player_refreshing.start()
        #self._refreshAll()
        

    def _save(self):
        out = open(userCachePath, "wb")
        json.dump(self._playerCacheList, out, indent=4, separators=(',', ':'))
        out.close()
            
    def _removePlayerWithName(self, name):
        toRemove = None
        for p in self._playerCacheList:
            if p["Playername"] == name:
                toRemove = p
        if toRemove is not None:
            self._playerCacheList.remove(toRemove)
            self._save()
    
    def _removePlayerWithUUID(self, uuid, seperator=True):
        toRemove = None
        for p in self._playerCacheList:
            if seperator:
                if p["UUID (Separator)"] == uuid:
                    toRemove = p
            else:
                if p["UUID (No Separator)"] == uuid:
                    toRemove = p
        if toRemove is not None:
            self._playerCacheList.remove(toRemove)
            self._save()
            
    def nameInCache(self, name):
        isInCache = False
        for p in self._playerCacheList:
            if p["Playername"] == name:
                isInCache = True
        return isInCache
    
    def uuidInCache(self, uuid, seperator=True):
        isInCache = False
        for p in self._playerCacheList:
            if seperator:
                if p["UUID (Separator)"] == uuid:
                    isInCache = True
            else:
                if p["UUID (No Separator)"] == uuid:
                    isInCache = True
        return isInCache
    
    def _refreshAll(self):
        with self.refresh_lock:
            playersNeededToBeRefreshed = []
            try:
                t = time.time()
            except:
                t = 0
            for player in self._playerCacheList:
                if player["Timestamp"] != "<Invalid>":
                    if t - player["Timestamp"] > 21600:
                        playersNeededToBeRefreshed.append(player)
            for player in playersNeededToBeRefreshed:
                self.getPlayerFromUUID(player["UUID (Separator)"], forceNetwork=True, dontSave=True)
                self._save()
    
    def force_refresh(self):
        players = self._playerCacheList
        for player in players:
            self.getPlayerFromUUID(player["UUID (Separator)"], forceNetwork=True)
            
    
    def getPlayerFromUUID(self, uuid, forceNetwork=False, dontSave=False):
        player = {}
        response = None
        if forceNetwork:
            if self.uuidInCache(uuid):
                self._removePlayerWithUUID(uuid)
            try:
                response = urllib2.urlopen("https://sessionserver.mojang.com/session/minecraft/profile/{}".format(uuid.replace("-",""))).read()
            except urllib2.URLError:
                return uuid
            if response is not None and response != "":
                playerJSON = json.loads(response)
                player["Playername"] = playerJSON["name"]
                player["UUID (No Separator)"] = playerJSON["id"]
                player["UUID (Separator)"] = uuid
                player["WasSuccessful"] = True
                player["Timestamp"] = time.time()
                self._playerCacheList.append(player)
                if not dontSave:
                    self._save()
                return playerJSON["name"]
            else:
                return uuid
        else:
            couldNotFind = False
            for p in self._playerCacheList:
                if p["UUID (Separator)"] == uuid and p["WasSuccessful"]:
                    couldNotFind = False
                    return p["Playername"]
                else:
                    couldNotFind = True
            if couldNotFind:
                result = self.getPlayerFromUUID(uuid, forceNetwork=True)
                if result == uuid:
                    player = {"Playername":"<Unknown>","UUID (Separator)":uuid,"UUID (No Separator)":uuid.replace("-",""),"Timestamp":"<Invalid>","WasSuccessful":False}
                    self._playerCacheList.append(player)
                    return uuid
    
    def getPlayerFromPlayername(self, playername, forceNetwork=False, separator=True):
        response = None
        if forceNetwork:
            if self.nameInCache(playername):
                self._removePlayerWithName(playername)
            try:
                response = urllib2.urlopen("https://api.mojang.com/users/profiles/minecraft/{}".format(playername)).read()
            except urllib2.URLError:
                return playername
            if response is not None and response != "":
                playerJSON = json.loads(response)
                player = {"Playername": playername, "UUID (No Separator)": playerJSON["id"]}
                uuid = playerJSON["id"][:8]+"-"+playerJSON["id"][8:12]+"-"+playerJSON["id"][12:16]+"-"+playerJSON["id"][16:20]+"-"+playerJSON["id"][20:]
                player["UUID (Separator)"] = uuid
                player["WasSuccessful"] = True
                player["Timestamp"] = time.time()
                self._playerCacheList.append(player)
                self._save()
                if separator:
                    return uuid
                else:
                    return playerJSON["id"]
            else:
                return playername
        else:
            couldNotFind = False
            for p in self._playerCacheList:
                if p["Playername"] == playername and p["WasSuccessful"]:
                    couldNotFind = False
                    return p["UUID (Separator)"]
                else:
                    couldNotFind = True
            if couldNotFind:
                result = self.getPlayerFromPlayername(playername, forceNetwork=True)
                if result == playername:
                    player = {"Playername":playername,"UUID (Separator)":"<Unknown>","UUID (No Separator)":"<Unknown>","Timestamp":"<Invalid>","WasSuccessful":False}
                    self._playerCacheList.append(player)
                    return playername
    
    # 0 if for a list of the playernames, 1 is for a dictionary of all player data
    def getAllPlayersKnown(self, returnType=0, include_failed_lookups=False):
        toReturn = None
        if returnType == 0:
            toReturn = []
            for p in self._playerCacheList:
                if p["WasSuccessful"]:
                    toReturn.append(p["Playername"])
                elif include_failed_lookups:
                    toReturn.append(p["Playername"])      
        elif returnType == 1:
            toReturn = {}
            for p in self._playerCacheList:
                if p["WasSuccessful"]:
                    toReturn[p["Playername"]] = p
                elif include_failed_lookups:
                    toReturn[p["Playername"]] = p
        return toReturn
    
    def getPlayerInfo(self, playername):
        response_name = None
        response_uuid = None
        player = {}
        if self.nameInCache(playername):
            self._removePlayerWithName(playername)
        try:
            response_name = json.loads(urllib2.urlopen("https://api.mojang.com/users/profiles/minecraft/{}".format(playername)).read())
            response_uuid = json.loads(urllib2.urlopen("https://sessionserver.mojang.com/session/minecraft/profile/{}".format(response_name["id"])).read())
        except urllib2.URLError:
            return playername
        if response_name is not None and response_name != "" and response_uuid is not None and response_uuid != "":
            player["Playername"] = response_name["name"]
            player["UUID (Separator)"] = response_name["id"][:8]+"-"+response_name["id"][8:12]+"-"+response_name["id"][12:16]+"-"+response_name["id"][16:20]+"-"+response_name["id"][20:]
            player["UUID (No Separator)"] = response_name["id"]
            player["WasSuccessful"] = True
            player["Timestamp"] = time.time()
            self._playerCacheList.append(player)
            self._save()
            return player["UUID (Separator)"], player["Playername"], player["UUID (No Separator)"]
        else:
            raise Exception("Couldn't find player")
    
    @staticmethod
    def __formats():
        player = {
                  "Playername":"<Username>",
                  "UUID":"<uuid>",
                  "Timestamp":"<timestamp>",
                  # WasSuccessful will be true if the UUID/Player name was retrieved successfully
                  "WasSuccessful":True
                  }
        pass
    
    def cleanup(self):
        remove = []
        for player in self._playerCacheList:
            if not player["WasSuccessful"]:
                remove.append(player)
        for toRemove in remove:
            self._playerCacheList.remove(toRemove)
        self._save()
                
playercache = __PlayerCache()
            

def getUUIDFromPlayerName(player, seperator=True, forceNetwork=False):
    return playercache.getPlayerFromPlayername(player, forceNetwork, seperator)
    '''
    if forceNetwork:
        try:
            playerJSONResponse = urllib2.urlopen("https://api.mojang.com/users/profiles/minecraft/{}".format(player)).read()
            playerJSON = json.loads(playerJSONResponse)
            if seperator:
                return "-".join((playerJSON["id"][:8], playerJSON["id"][8:12], playerJSON["id"][12:16], playerJSON["id"][16:20], playerJSON["id"][20:]))
            else:
                return playerJSON["id"]
        except:
            raise PlayerNotFound(player)
    else:
        try:
            t = time.time()
        except:
            t = 0
        try:
            if not os.path.exists(userCachePath):
                usercache = {}
                print "{} doesn't exist, will not cache".format(userCachePath)
            else:
                try:
                    f = open(userCachePath,"r+")
                    usercache = json.loads(f.read())
                except:
                    print "Error loading {} from disk".format(userCachePath)

                    os.remove(userCachePath)
                    f = open(userCachePath, 'ar+')
                    usercache = {}

            try:
                uuid = [x for x in usercache if usercache[x]["username"].lower() == player.lower()][0]
                if os.path.exists(userCachePath) and uuid in usercache and "timestamp" in usercache[uuid] and t-usercache[uuid]["timestamp"] < 21600:
                    refreshUUID = False
                else:
                    refreshUUID = True
            except:
                refreshUUID = True

            if refreshUUID:
                uuid = getUUIDFromPlayerName(player, seperator, True)
                    
                try:
                    usercache[uuid] = {"username":getPlayerNameFromUUID(uuid, True),"timestamp":t}
                except:
                    print "Error updating {} from network. Using last known".format(uuid)
                    return uuid
            try:
                if os.path.exists(userCachePath):
                    f.seek(0)
                    f.write(json.dumps(usercache))
                    f.close()
            except:
                print "Error writing {} to disk".format(userCachePath)
            return uuid

        except:
            print "Error getting the uuid for {}".format(player)
            raise PlayerNotFound(player)
    '''


def getPlayerNameFromUUID(uuid,forceNetwork=False):
    '''
    Gets the Username from a UUID
    :param uuid: The Player's UUID
    :param forceNetwork: Forces use Mojang's API instead of first looking in the usercache.json
    '''
    return playercache.getPlayerFromUUID(uuid, forceNetwork)
    '''
    if forceNetwork:
        try:
            nuuid = uuid.replace("-", "")
            playerJSONResponse = urllib2.urlopen("https://api.mojang.com/user/profiles/{}/names".format(nuuid)).read()
            playerJSON = json.loads(playerJSONResponse)
            return playerJSON[0]
        except:
            raise PlayerNotFound(uuid)
    else:
        try:
            t = time.time()
        except:
            t = 0
        try:
            if not os.path.exists(userCachePath):
                usercache = {}
                print "{} doesn't exist, will not cache".format(userCachePath)
            else:
                try:
                    f = open(userCachePath,"r+")
                    usercache = json.loads(f.read())
                except:
                    print "Error loading {} from disk".format(userCachePath)
                    
                    os.remove(userCachePath)
                    f = open(userCachePath, 'ar+')
                    usercache = {}

            try:
                if os.path.exists(userCachePath) and uuid in usercache and "timestamp" in usercache[uuid] and t-usercache[uuid]["timestamp"] < 21600:
                    refreshUUID = False
                else:
                    refreshUUID = True
            except:
                refreshUUID = True

            if refreshUUID:
                try:
                    usercache[uuid] = {"username":getPlayerNameFromUUID(uuid,True),"timestamp":t}
                except:
                    print "Error loading {} from network".format(uuid)
                    return uuid
            try:
                if os.path.exists(userCachePath):
                    f.seek(0)
                    f.write(json.dumps(usercache))
                    f.close()
            except:
                print "Error writing {} to disk".format(userCachePath)
            try:
                return usercache[uuid]["username"]
            except:
                print "Error returning uuid"
                return uuid
        except:
            print "Error getting the username for {}".format(uuid)
            return uuid
    '''
        

def getPlayerSkin(uuid, force=False, trying_again=False, instance=None):
    SKIN_URL = "http://skins.minecraft.net/MinecraftSkins/{}.png"
    toReturn = 'char.png'
    try:
        os.mkdir("player-skins")
    except OSError:
        pass
    if force or not os.path.exists(os.path.join("player-skins", uuid.replace("-", "_")+".png")):
        try:
            # Checks to see if the skin even exists
            urllib2.urlopen(SKIN_URL.format(playercache.getPlayerFromUUID(uuid, forceNetwork=False)))
        except urllib2.URLError as e:
            if "Not Found" in e.msg:
                return toReturn
    try:
        if os.path.exists(os.path.join("player-skins", uuid.replace("-", "_")+".png")) and not force:
            player_skin = Image.open(os.path.join("player-skins", uuid.replace("-","_")+".png"))
            if player_skin.size == (64,64):
                player_skin = player_skin.crop((0,0,64,32))
                player_skin.save(os.path.join("player-skins", uuid.replace("-","_")+".png"))
            toReturn = os.path.join("player-skins", uuid.replace("-","_")+".png")
        else:
            playername = playercache.getPlayerFromUUID(uuid,forceNetwork=False)
            urllib.urlretrieve(SKIN_URL.format(playername), os.path.join("player-skins", uuid.replace("-","_")+".png"))
            toReturn = os.path.join("player-skins", uuid.replace("-","_")+".png")
            player_skin = Image.open(toReturn)
            if player_skin.size == (64,64):
                player_skin = player_skin.crop((0,0,64,32))
                player_skin.save(os.path.join("player-skins", uuid.replace("-","_")+".png"))
    except IOError:
        print "Couldn't find Image file ("+str(uuid.replace("-","_")+".png")+") or the file may be corrupted"
        print "Trying to re-download skin...."
        if not trying_again and instance is not None:
            instance.delete_skin(uuid)
            os.remove(os.path.join("player-skins", uuid.replace("-","_")+".png"))
            toReturn = getPlayerSkin(uuid, force=True, trying_again=True)
        pass
    except HTTPError:
        print "Couldn't connect to a network"
        raise Exception("Could not connect to the skins server, please check your Internet connection and try again.")
        pass
    except Exception:
        print "Unknown error occurred while reading/downloading skin for "+str(uuid.replace("-","_")+".png")
        pass
    return toReturn

def _cleanup():
    if os.path.exists("player-skins"):
        for image_file in os.listdir("player-skins"):
            fp = None
            try:
                fp = open(os.path.join("player-skins", image_file), 'rb')
                Image.open(fp)
            except IOError:
                fp.close()
                os.remove(os.path.join("player-skins", image_file))
    playercache.cleanup()
    
atexit.register(_cleanup)