#!/usr/bin/python

#Copyright 2008 Steffen Jobbagy-Felso
#This program is free software: you can redistribute it and/or modify
#it under the terms of the GNU Affero General Public License as published by
#the Free Software Foundation, version 3 of the License.
#
#This program 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 Affero General Public License
#along with this program. If not, see <http://www.gnu.org/licenses/>.
#In the "official" distribution you can find the license in
#agpl-3.0.txt in the docs folder of the package.

#see status.txt for site/games support info

#    Standard Library modules

import os  # todo: remove this once import_dir is in fpdb_import
import sys
from time import time
import traceback
import math
import datetime
import re

#    fpdb/FreePokerTools modules

import fpdb_simple
import fpdb_db
import fpdb_parse_logic
import Configuration

#    database interface modules
try:
    import MySQLdb
    mysqlLibFound=True
except:
    pass
    
try:
    import psycopg2
    pgsqlLibFound=True
except:
    pass

class Importer:

    def __init__(self, caller, settings, config):
        """Constructor"""
        self.settings   = settings
        self.caller     = caller
        self.config     = config
        self.fdb        = None
        self.cursor     = None
        self.filelist   = {}
        self.dirlist    = {}
        self.siteIds    = {}
        self.addToDirList = {}
        self.removeFromFileList = {} # to remove deleted files
        self.monitor    = False
        self.updated    = {}         #Time last import was run {file:mtime}
        self.lines      = None
        self.faobs      = None       # File as one big string
        self.pos_in_file = {}        # dict to remember how far we have read in the file
        #Set defaults
        self.callHud    = self.config.get_import_parameters().get("callFpdbHud")
        if 'minPrint' not in self.settings:
            #TODO: Is this value in the xml file?
            self.settings['minPrint'] = 30
        if 'handCount' not in self.settings:
            #TODO: Is this value in the xml file?
            self.settings['handCount'] = 0
        self.fdb = fpdb_db.fpdb_db()   # sets self.fdb.db self.fdb.cursor and self.fdb.sql
        self.fdb.do_connect(self.config)

    #Set functions
    def setCallHud(self, value):
        self.callHud = value

    def setMinPrint(self, value):
        self.settings['minPrint'] = int(value)

    def setHandCount(self, value):
        self.settings['handCount'] = int(value)

    def setQuiet(self, value):
        self.settings['quiet'] = value

    def setFailOnError(self, value):
        self.settings['failOnError'] = value

    def setHandsInDB(self, value):
        self.settings['handsInDB'] = value

    def setThreads(self, value):
        self.settings['threads'] = value

    def setDropIndexes(self, value):
        self.settings['dropIndexes'] = value

#   def setWatchTime(self):
#       self.updated = time()

    def clearFileList(self):
        self.filelist = {}

    #Add an individual file to filelist
    def addImportFile(self, filename, site = "default", filter = "passthrough"):
        #TODO: test it is a valid file -> put that in config!!
        self.filelist[filename] = [site] + [filter]
        if site not in self.siteIds:
            # Get id from Sites table in DB
            self.fdb.cursor.execute(self.fdb.sql.query['getSiteId'], (site,))
            result = self.fdb.cursor.fetchall()
            if len(result) == 1:
                self.siteIds[site] = result[0][0]
            else:
                if len(result) == 0:
                    print "[ERROR] Database ID for %s not found" % site
                else:
                    print "[ERROR] More than 1 Database ID found for %s - Multiple currencies not implemented yet" % site


    # Called from GuiBulkImport to add a file or directory.
    def addBulkImportImportFileOrDir(self, inputPath, site = "PokerStars"):
        """Add a file or directory for bulk import"""
        filter = self.config.hhcs[site].converter
        # Bulk import never monitors
        # if directory, add all files in it. Otherwise add single file.
        # TODO: only add sane files?
        if os.path.isdir(inputPath):
            for subdir in os.walk(inputPath):
                for file in subdir[2]:
                    self.addImportFile(os.path.join(inputPath, subdir[0], file), site=site, filter=filter)
        else:
            self.addImportFile(inputPath, site=site, filter=filter)
    #Add a directory of files to filelist
    #Only one import directory per site supported.
    #dirlist is a hash of lists:
    #dirlist{ 'PokerStars' => ["/path/to/import/", "filtername"] }
    def addImportDirectory(self,dir,monitor = False, site = "default", filter = "passthrough"):
        #gets called by GuiAutoImport.
        #This should really be using os.walk
        #http://docs.python.org/library/os.html
        if os.path.isdir(dir):
            if monitor == True:
                self.monitor = True
                self.dirlist[site] = [dir] + [filter]

            for file in os.listdir(dir):
                self.addImportFile(os.path.join(dir, file), site, filter)
        else:
            print "Warning: Attempted to add non-directory: '" + str(dir) + "' as an import directory"

    def runImport(self):
        """"Run full import on self.filelist."""
        start = datetime.datetime.now()
        print "started at", start, "--", len(self.filelist), "files to import.", self.settings['dropIndexes']
        if self.settings['dropIndexes'] == 'auto':
            self.settings['dropIndexes'] = self.calculate_auto()
        if self.settings['dropIndexes'] == 'drop':
            fpdb_simple.prepareBulkImport(self.fdb)
        totstored = 0
        totdups = 0
        totpartial = 0
        toterrors = 0
        tottime = 0
#        if threads <= 1: do this bit
        for file in self.filelist:
            (stored, duplicates, partial, errors, ttime) = self.import_file_dict(file, self.filelist[file][0], self.filelist[file][1])
            totstored += stored
            totdups += duplicates
            totpartial += partial
            toterrors += errors
            tottime += ttime
        if self.settings['dropIndexes'] == 'drop':
            fpdb_simple.afterBulkImport(self.fdb)
        fpdb_simple.analyzeDB(self.fdb)
        return (totstored, totdups, totpartial, toterrors, tottime)
#        else: import threaded

    def calculate_auto(self):
        """An heuristic to determine a reasonable value of drop/don't drop"""
        if len(self.filelist) == 1:            return "don't drop"
        if 'handsInDB' not in self.settings:
            try:
                tmpcursor = self.fdb.db.cursor()
                tmpcursor.execute("Select count(1) from Hands;")
                self.settings['handsInDB'] = tmpcursor.fetchone()[0]
            except:
                pass # if this fails we're probably doomed anyway
        if self.settings['handsInDB'] < 5000:  return "drop"
        if len(self.filelist) < 50:            return "don't drop"      
        if self.settings['handsInDB'] > 50000: return "don't drop"
        return "drop"

    #Run import on updated files, then store latest update time.
    def runUpdated(self):
        #Check for new files in monitored directories
        #todo: make efficient - always checks for new file, should be able to use mtime of directory
        # ^^ May not work on windows
        
        for site in self.dirlist:
            self.addImportDirectory(self.dirlist[site][0], False, site, self.dirlist[site][1])

        for file in self.filelist:
            if os.path.exists(file):
                stat_info = os.stat(file)
                try: 
                    lastupdate = self.updated[file]
                    if stat_info.st_mtime > lastupdate:
                        self.import_file_dict(file, self.filelist[file][0], self.filelist[file][1])
                        self.updated[file] = time()
                except:
                    self.updated[file] = time()
                    # If modified in the last minute run an immediate import.
                    # This codepath only runs first time the file is found.
                    if os.path.isdir(file) or (time() - stat_info.st_mtime) < 60:
                        # TODO attach a HHC thread to the file
                        # TODO import the output of the HHC thread  -- this needs to wait for the HHC to block?
                        self.import_file_dict(file, self.filelist[file][0], self.filelist[file][1])
                # TODO we also test if directory, why?
                #if os.path.isdir(file):
                    #self.import_file_dict(file, self.filelist[file][0], self.filelist[file][1])
            else:
                removeFromFileList[file] = True
        self.addToDirList = filter(lambda x: self.addImportDirectory(x, True, self.addToDirList[x][0], self.addToDirList[x][1]), self.addToDirList)
            
        for file in self.removeFromFileList:
            if file in self.filelist:
                del self.filelist[file]
        
        self.addToDirList = {}
        self.removeFromFileList = {}

    # This is now an internal function that should not be called directly.
    def import_file_dict(self, file, site, filter):
        if os.path.isdir(file):
            self.addToDirList[file] = [site] + [filter]
            return
        if filter == "passthrough" or filter == "":
            (stored, duplicates, partial, errors, ttime) = self.import_fpdb_file(file, site)
        else:
            conv = None
            # Load filter, process file, pass returned filename to import_fpdb_file
            
            print "converting %s" % file
            hhbase    = self.config.get_import_parameters().get("hhArchiveBase")
            hhbase    = os.path.expanduser(hhbase)
            hhdir     = os.path.join(hhbase,site)
            try:
                out_path     = os.path.join(hhdir, file.split(os.path.sep)[-2]+"-"+os.path.basename(file))
            except:
                out_path     = os.path.join(hhdir, "x"+strftime("%d-%m-%y")+os.path.basename(file))

            filter_name = filter.replace("ToFpdb", "")

            mod = __import__(filter)
            obj = getattr(mod, filter_name, None)
            if callable(obj):
                conv = obj(in_path = file, out_path = out_path)
                if(conv.getStatus()):
                    (stored, duplicates, partial, errors, ttime) = self.import_fpdb_file(out_path, site)
                else:
                    # conversion didn't work
                    # TODO: appropriate response?
                    return (0, 0, 0, 1, 0)
            else:
                print "Unknown filter filter_name:'%s' in filter:'%s'" %(filter_name, filter)
                return

        #This will barf if conv.getStatus != True
        return (stored, duplicates, partial, errors, ttime)


    def import_fpdb_file(self, file, site):
        starttime = time()
        last_read_hand=0
        loc = 0
        if (file=="stdin"):
            inputFile=sys.stdin
        else:
            if os.path.exists(file):
                inputFile = open(file, "rU")
            else:
                self.removeFromFileList[file] = True
                return (0, 0, 0, 1, 0)
            try:
                loc = self.pos_in_file[file]
            except:
                pass
        # Read input file into class and close file
        inputFile.seek(loc)
        self.lines=fpdb_simple.removeTrailingEOL(inputFile.readlines())
        self.pos_in_file[file] = inputFile.tell()
        inputFile.close()

        try: # sometimes we seem to be getting an empty self.lines, in which case, we just want to return.
            firstline = self.lines[0]
        except:
            print "DEBUG: import_fpdb_file: failed on self.lines[0]: '%s' '%s' '%s' '%s' " %( file, site, self.lines, loc)
            return (0,0,0,1,0)

        if firstline.find("Tournament Summary")!=-1:
            print "TODO: implement importing tournament summaries"
            #self.faobs = readfile(inputFile)
            #self.parseTourneyHistory()
            return (0,0,0,1,0)

        category=fpdb_simple.recogniseCategory(firstline)

        startpos=0
        stored=0 #counter
        duplicates=0 #counter
        partial=0 #counter
        errors=0 #counter

        for i in xrange (len(self.lines)):
            if (len(self.lines[i])<2): #Wierd way to detect for '\r\n' or '\n'
                endpos=i
                hand=self.lines[startpos:endpos]
        
                if (len(hand[0])<2):
                    hand=hand[1:]

        
                if (len(hand)<3):
                    pass
                    #TODO: This is ugly - we didn't actually find the start of the
                    # hand with the outer loop so we test again...
                else:
                    isTourney=fpdb_simple.isTourney(hand[0])
                    if not isTourney:
                        hand = fpdb_simple.filterAnteBlindFold(hand)
                    self.hand=hand

                    try:
                        handsId=fpdb_parse_logic.mainParser(self.settings['db-backend'], self.fdb.db
                                                           ,self.fdb.cursor, self.siteIds[site], category, hand, self.config)
                        self.fdb.db.commit()

                        stored+=1
                        if self.callHud:
                            #print "call to HUD here. handsId:",handsId
                            #pipe the Hands.id out to the HUD
                            self.caller.pipe_to_hud.stdin.write("%s" % (handsId) + os.linesep)
                    except fpdb_simple.DuplicateError:
                        duplicates+=1
                    except (ValueError), fe:
                        errors+=1
                        self.printEmailErrorMessage(errors, file, hand)

                        if (self.settings['failOnError']):
                            self.fdb.db.commit() #dont remove this, in case hand processing was cancelled.
                            raise
                    except (fpdb_simple.FpdbError), fe:
                        errors+=1
                        self.printEmailErrorMessage(errors, file, hand)

                        self.fdb.db.rollback()

                        if (self.settings['failOnError']):
                            self.fdb.db.commit() #dont remove this, in case hand processing was cancelled.
                            raise
                    if (self.settings['minPrint']!=0):
                        if ((stored+duplicates+errors)%self.settings['minPrint']==0):
                            print "stored:", stored, "duplicates:", duplicates, "errors:", errors
                    
                    if (self.settings['handCount']!=0):
                        if ((stored+duplicates+errors)>=self.settings['handCount']):
                            if (not self.settings['quiet']):
                                print "quitting due to reaching the amount of hands to be imported"
                                print "Total stored:", stored, "duplicates:", duplicates, "errors:", errors, " time:", (time() - starttime)
                            sys.exit(0)
                startpos=endpos
        ttime = time() - starttime
        print "\rTotal stored:", stored, "duplicates:", duplicates, "errors:", errors, " time:", ttime
        
        if stored==0:
            if duplicates>0:
                for line_no in range(len(self.lines)):
                    if self.lines[line_no].find("Game #")!=-1:
                        final_game_line=self.lines[line_no]
                handsId=fpdb_simple.parseSiteHandNo(final_game_line)
            else:
                print "failed to read a single hand from file:", inputFile
                handsId=0
            #todo: this will cause return of an unstored hand number if the last hand was error
        self.fdb.db.commit()
        self.handsId=handsId
        return (stored, duplicates, partial, errors, ttime)

    def printEmailErrorMessage(self, errors, filename, line):
        traceback.print_exc(file=sys.stderr)
        print "Error No.",errors,", please send the hand causing this to steffen@sycamoretest.info so I can fix it."
        print "Filename:", filename
        print "Here is the first line so you can identify it. Please mention that the error was a ValueError:"
        print self.hand[0]
        print "Hand logged to hand-errors.txt"
        logfile = open('hand-errors.txt', 'a')
        for s in self.hand:
            logfile.write(str(s) + "\n")
        logfile.write("\n")
        logfile.close()

if __name__ == "__main__":
    print "CLI for fpdb_import is now available as CliFpdb.py"