# Author: Nic Wolfe <nic@wolfeden.ca>
# URL: http://code.google.com/p/sickbeard/
#
# This file is part of SickRage.
#
# SickRage is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# SickRage is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with SickRage.  If not, see <http://www.gnu.org/licenses/>.

from __future__ import with_statement
import os
import sys
import logging
import logging.handlers
import threading
import platform

import sickbeard
from sickbeard import classes
from sickbeard.encodingKludge import ek
from github import Github
from pastebin import PastebinAPI

# log levels
ERROR = logging.ERROR
WARNING = logging.WARNING
INFO = logging.INFO
DEBUG = logging.DEBUG
DB = 5

reverseNames = {u'ERROR': ERROR,
                u'WARNING': WARNING,
                u'INFO': INFO,
                u'DEBUG': DEBUG,
                u'DB': DB}

censoredItems = {}

class NullHandler(logging.Handler):
    def emit(self, record):
        pass

class CensoredFormatter(logging.Formatter):
    def format(self, record):
        msg = super(CensoredFormatter, self).format(record)
        for k, v in censoredItems.items():
            if v and len(v) > 0 and v in msg:
                msg = msg.replace(v, len(v) * '*')
        return msg

class Logger(object):
    def __init__(self):
        self.logger = logging.getLogger('sickrage')

        self.loggers = [
            logging.getLogger('sickrage'),
            logging.getLogger('tornado.general'),
            logging.getLogger('tornado.application'),
            #logging.getLogger('tornado.access'),
        ]

        self.consoleLogging = False
        self.fileLogging = False
        self.debugLogging = False
        self.logFile = None

    def initLogging(self, consoleLogging=False, fileLogging=False, debugLogging=False):
        self.logFile = self.logFile or os.path.join(sickbeard.LOG_DIR, 'sickrage.log')
        self.debugLogging = debugLogging
        self.consoleLogging = consoleLogging
        self.fileLogging = fileLogging

        # add a new logging level DB
        logging.addLevelName(DB, 'DB')

        # nullify root logger
        logging.getLogger().addHandler(NullHandler())

        # set custom root logger
        for logger in self.loggers:
            if logger is not self.logger:
                logger.root = self.logger
                logger.parent = self.logger

        # set minimum logging level allowed for loggers
        for logger in self.loggers:
            logger.setLevel(DB)

        # console log handler
        if self.consoleLogging:
            console = logging.StreamHandler()
            console.setFormatter(CensoredFormatter('%(asctime)s %(levelname)s::%(message)s', '%H:%M:%S'))
            console.setLevel(INFO if not self.debugLogging else DEBUG)

            for logger in self.loggers:
                logger.addHandler(console)

        # rotating log file handler
        if self.fileLogging:
            rfh = logging.handlers.RotatingFileHandler(self.logFile, maxBytes=1024 * 1024, backupCount=5, encoding='utf-8')
            rfh.setFormatter(CensoredFormatter('%(asctime)s %(levelname)-8s %(message)s', '%Y-%m-%d %H:%M:%S'))
            rfh.setLevel(DEBUG)

            for logger in self.loggers:
                logger.addHandler(rfh)

    def log(self, msg, level=INFO, *args, **kwargs):
        meThread = threading.currentThread().getName()
        message = meThread + u" :: " + msg

        # pass exception information if debugging enabled

        kwargs["exc_info"] = 1 if level == ERROR else 0
        self.logger.log(level, message, *args, **kwargs)

        if level == ERROR:
            classes.ErrorViewer.add(classes.UIError(message))
            #if sickbeard.GIT_AUTOISSUES:
            #    self.submit_errors()

    def log_error_and_exit(self, error_msg, *args, **kwargs):
        self.log(error_msg, ERROR, *args, **kwargs)

        if not self.consoleLogging:
            sys.exit(error_msg.encode(sickbeard.SYS_ENCODING, 'xmlcharrefreplace'))
        else:
            sys.exit(1)

    def submit_errors(self):
        if not (sickbeard.GIT_USERNAME and sickbeard.GIT_PASSWORD and len(classes.ErrorViewer.errors) > 0):
            return

        title = "[APP SUBMITTED]: "

        gh_org = sickbeard.GIT_ORG or 'SiCKRAGETV'
        gh_repo = 'sickrage-issues'

        self.gh_issues = Github(login_or_token=sickbeard.GIT_USERNAME, password=sickbeard.GIT_PASSWORD,
                                user_agent="SiCKRAGE").get_organization(gh_org).get_repo(gh_repo)

        pastebin_url = None
        try:
            if self.logFile and os.path.isfile(self.logFile):
                with ek(open, self.logFile) as f:
                    data = f.readlines()
                    data = "".join(data[len(data) - 100:])
                    pastebin_url = PastebinAPI().paste('f59b8e9fa1fc2d033e399e6c7fb09d19', data)
        except Exception as e:
            pass

        try:
            for curError in sorted(classes.ErrorViewer.errors, key=lambda error: error.time, reverse=True)[:500]:
                if not curError.title:
                    continue

                message = u"### INFO\n"
                message += u"Python Version: **" + sys.version[:120] + "**\n"
                message += u"Operating System: **" + platform.platform() + "**\n"
                message += u"Branch: **" + sickbeard.BRANCH + "**\n"
                message += u"Commit: SiCKRAGETV/SickRage@" + sickbeard.CUR_COMMIT_HASH + "\n"
                if pastebin_url:
                    message += u"Pastebin Log URL: " + pastebin_url + "\n"
                message += u"### ERROR\n"
                message += u"```\n"
                message += curError.message + "\n"
                message += u"```\n"
                message += u"---\n"
                message += u"_STAFF NOTIFIED_: @SiCKRAGETV/owners @SiCKRAGETV/moderators"

                issue = self.gh_issues.create_issue(title + curError.title, message)
                if issue:
                    ui.notifications.message('Your issue ticket #%s was submitted successfully!' % issue.number)
                    classes.ErrorViewer.clear()

        except Exception as e:
            self.log(sickbeard.exceptions.ex(e), logger.ERROR)


class Wrapper(object):
    instance = Logger()

    def __init__(self, wrapped):
        self.wrapped = wrapped

    def __getattr__(self, name):
        try:
            return getattr(self.wrapped, name)
        except AttributeError:
            return getattr(self.instance, name)

_globals = sys.modules[__name__] = Wrapper(sys.modules[__name__])