#!/usr/bin/env python

#System imports
import os
import sys
import ConfigParser
import shutil
import logging
import datetime
import time
import re
from sets import Set
from subprocess import call, Popen

# Custom imports
import autoProcess.migratecfg as migratecfg
import extractor.extractor as extractor
import autoProcess.autoProcessComics as autoProcessComics
import autoProcess.autoProcessGames as autoProcessGames 
import autoProcess.autoProcessMusic as autoProcessMusic
import autoProcess.autoProcessTV as autoProcessTV
import autoProcess.autoProcessMovie as autoProcessMovie
from autoProcess.nzbToMediaEnv import *
from autoProcess.nzbToMediaUtil import *
from utorrent.client import UTorrentClient
from transmissionrpc.client import Client as TransmissionClient

def main(inputDirectory, inputName, inputCategory, inputHash, inputID):

    status = int(1)  # 1 = failed | 0 = success
    root = int(0)
    video = int(0)
    video2 = int(0)
    foundFile = int(0)
    extracted_folder = []
    extractionSuccess = False
    copy_list = []

    Logger.debug("MAIN: Received Directory: %s | Name: %s | Category: %s", inputDirectory, inputName, inputCategory)
    if  inputCategory == sbCategory and sbFork in SICKBEARD_TORRENT:
        Logger.info("MAIN: Calling SickBeard's %s branch to post-process: %s",sbFork ,inputName)
        result = autoProcessTV.processEpisode(inputDirectory, inputName, int(0))
        if result == 1:
            Logger.info("MAIN: A problem was reported in the autoProcess* script. If torrent was pasued we will resume seeding")
        Logger.info("MAIN: All done.")
        sys.exit()

    inputDirectory, inputName, inputCategory, root = category_search(inputDirectory, inputName, inputCategory, root, categories)  # Confirm the category by parsing directory structure

    outputDestination = ""
    for category in categories:
        if category == inputCategory:
            if os.path.basename(inputDirectory) == inputName:
                Logger.info("MAIN: Download is a directory")
                outputDestination = os.path.normpath(os.path.join(outputDirectory, category, safeName(inputName)))
            else:
                Logger.info("MAIN: Download is not a directory")
                outputDestination = os.path.normpath(os.path.join(outputDirectory, category, os.path.splitext(safeName(inputName))[0]))
            Logger.info("MAIN: Output directory set to: %s", outputDestination)
            break
        else:
            continue
    if outputDestination == "":
        if inputCategory == "":
            inputCategory = "UNCAT" 
        if os.path.basename(inputDirectory) == inputName:
            Logger.info("MAIN: Download is a directory")
            outputDestination = os.path.normpath(os.path.join(outputDirectory, inputCategory, safeName(inputName)))
        else:
            Logger.info("MAIN: Download is not a directory")
            outputDestination = os.path.normpath(os.path.join(outputDirectory, inputCategory, os.path.splitext(safeName(inputName))[0]))
        Logger.info("MAIN: Output directory set to: %s", outputDestination)

    processOnly = [cpsCategory, sbCategory, hpCategory, mlCategory, gzCategory]
    if not "NONE" in user_script_categories: # if None, we only process the 5 listed.
        if "ALL" in user_script_categories: # All defined categories
            processOnly = categories
        processOnly.extend(user_script_categories) # Adds all categories to be processed by userscript.

    if not inputCategory in processOnly:
        Logger.info("MAIN: No processing to be done for category: %s. Exiting", inputCategory) 
        Logger.info("MAIN: All done.")
        sys.exit()

    # Hardlink solution for uTorrent, need to implent support for deluge, transmission
    if clientAgent in ['utorrent', 'transmission'] and inputHash and useLink != "no":
        if clientAgent == 'utorrent':
            try:
                Logger.debug("MAIN: Connecting to %s: %s", clientAgent, uTorrentWEBui)
                utorrentClass = UTorrentClient(uTorrentWEBui, uTorrentUSR, uTorrentPWD)
            except:
                Logger.exception("MAIN: Failed to connect to uTorrent")
                utorrentClass = ""
        if clientAgent == 'transmission':
            try:
                Logger.debug("MAIN: Connecting to %s: http://%s:%s", clientAgent, TransmissionHost, TransmissionPort)
                TransmissionClass = TransmissionClient(TransmissionHost, TransmissionPort, TransmissionUSR, TransmissionPWD)
            except:
                Logger.exception("MAIN: Failed to connect to Transmission")
                TransmissionClass = ""

        # if we are using links with uTorrent it means we need to pause it in order to access the files
        Logger.debug("MAIN: Stoping torrent %s in %s while processing", inputName, clientAgent)
        if clientAgent == 'utorrent' and utorrentClass != "":            
            utorrentClass.stop(inputHash)
        if clientAgent == 'transmission' and TransmissionClass !="":
            TransmissionClass.stop_torrent(inputID)
        time.sleep(5)  # Give Torrent client some time to catch up with the change      

    Logger.debug("MAIN: Scanning files in directory: %s", inputDirectory)      

    now = datetime.datetime.now()
    for dirpath, dirnames, filenames in os.walk(inputDirectory):
        for file in filenames:

            filePath = os.path.join(dirpath, file)
            fileName, fileExtension = os.path.splitext(file)
            targetDirectory = os.path.join(outputDestination, file)

            if root == 1:
                if foundFile == int(0): 
                    Logger.debug("MAIN: Looking for %s in: %s", inputName, file)
                if (safeName(inputName) in safeName(file)) or (safeName(fileName) in safeName(inputName)):
                    #pass  # This file does match the Torrent name
                    foundFile = 1
                    Logger.debug("MAIN: Found file %s that matches Torrent Name %s", file, inputName)
                else:
                    continue  # This file does not match the Torrent name, skip it

            if root == 2:
                Logger.debug("MAIN: Looking for files with modified/created dates less than 5 minutes old.")
                mtime_lapse = now - datetime.datetime.fromtimestamp(os.path.getmtime(os.path.join(dirpath, file)))
                ctime_lapse = now - datetime.datetime.fromtimestamp(os.path.getctime(os.path.join(dirpath, file)))
                if (mtime_lapse < datetime.timedelta(minutes=5)) or (ctime_lapse < datetime.timedelta(minutes=5)):
                    #pass  # This file does match the date time criteria
                    foundFile = 1
                    Logger.debug("MAIN: Found file %s with date modifed/created less than 5 minutes ago.", file)
                else:
                    continue  # This file has not been recently moved or created, skip it

            if fileExtension in mediaContainer:  # If the file is a video file
                if is_sample(filePath, inputName, minSampleSize) and not inputCategory == hpCategory:  # Ignore samples
                    Logger.info("MAIN: Ignoring sample file: %s  ", filePath)
                    continue
                else:
                    video = video + 1
                    Logger.info("MAIN: Found video file %s in %s", fileExtension, filePath)
                    try:
                        copy_link(filePath, targetDirectory, useLink, outputDestination)
                        copy_list.append([filePath, os.path.join(outputDestination, file)])
                    except:
                        Logger.exception("MAIN: Failed to link file: %s", file)
            elif fileExtension in metaContainer:
                Logger.info("MAIN: Found metadata file %s for file %s", fileExtension, filePath)
                try:
                    copy_link(filePath, targetDirectory, useLink, outputDestination)
                    copy_list.append([filePath, os.path.join(outputDestination, file)])
                except:
                    Logger.exception("MAIN: Failed to link file: %s", file)
                continue
            elif fileExtension in compressedContainer:
                if inputCategory in [hpCategory]: # We need to link all files for HP in order to move these back to support seeding.
                    Logger.info("MAIN: Linking compressed archive file %s for file %s", fileExtension, filePath)
                    try:
                        copy_link(filePath, targetDirectory, useLink, outputDestination)
                        copy_list.append([filePath, os.path.join(outputDestination, file)])
                    except:
                        Logger.exception("MAIN: Failed to link file: %s", file)
                # find part numbers in second "extension" from right, if we have more than 1 compressed file in the same directory.
                if re.search(r'\d+', os.path.splitext(fileName)[1]) and os.path.dirname(filePath) in extracted_folder and not (os.path.splitext(fileName)[1] in ['.720p','.1080p']):
                    part = int(re.search(r'\d+', os.path.splitext(fileName)[1]).group())
                    if part == 1: # we only want to extract the primary part.
                        Logger.debug("MAIN: Found primary part of a multi-part archive %s. Extracting", file)                       
                    else:
                        Logger.debug("MAIN: Found part %s of a multi-part archive %s. Ignoring", part, file)
                        continue
                Logger.info("MAIN: Found compressed archive %s for file %s", fileExtension, filePath)
                try:
                    if inputCategory == hpCategory: # HP needs to scan the same dir as passed to downloader. 
                        extractor.extract(filePath, inputDirectory)
                    else:
                        extractor.extract(filePath, outputDestination)
                    extractionSuccess = True # we use this variable to determine if we need to pause a torrent or not in uTorrent (don't need to pause archived content)
                    extracted_folder.append(os.path.dirname(filePath))
                except:
                    Logger.exception("MAIN: Extraction failed for: %s", file)
                continue
            elif not inputCategory in [cpsCategory, sbCategory]: #process all for non-video categories.
                Logger.info("MAIN: Found file %s for category %s", filePath, inputCategory)
                copy_link(filePath, targetDirectory, useLink, outputDestination)
                copy_list.append([filePath, os.path.join(outputDestination, file)])
                continue
            else:
                Logger.debug("MAIN: Ignoring unknown filetype %s for file %s", fileExtension, filePath)
                continue
    if not inputCategory in [hpCategory]: #don't flatten hp in case multi cd albums, and we need to copy this back later. 
        flatten(outputDestination)

    # Now check if movie files exist in destination:
    if inputCategory in [cpsCategory, sbCategory]: 
        for dirpath, dirnames, filenames in os.walk(outputDestination):
            for file in filenames:
                filePath = os.path.join(dirpath, file)
                fileName, fileExtension = os.path.splitext(file)
                if fileExtension in mediaContainer:  # If the file is a video file
                    if is_sample(filePath, inputName, minSampleSize):
                        Logger.debug("MAIN: Removing sample file: %s", filePath)
                        os.unlink(filePath)  # remove samples
                    else:
                        Logger.debug("MAIN: Found media file: %s", filePath)
                        video2 = video2 + 1
                else:
                    Logger.debug("MAIN: File %s is not a media file", filePath)
        if video2 >= video and video2 > int(0):  # Check that all video files were moved
            Logger.debug("MAIN: Found %s media files", str(video2))
            status = int(0)
        else:
            Logger.debug("MAIN: Found %s media files in output. %s were found in input", str(video2), str(video))

    processCategories = Set([cpsCategory, sbCategory, hpCategory, mlCategory, gzCategory])

    if (inputCategory in user_script_categories and not "NONE" in user_script_categories) or ("ALL" in user_script_categories and not inputCategory in processCategories):
        Logger.info("MAIN: Processing user script %s.", user_script)
        result = external_script(outputDestination)
    elif status == int(0) or (inputCategory in [hpCategory, mlCategory, gzCategory]): # if movies linked/extracted or for other categories.
        Logger.debug("MAIN: Calling autoProcess script for successful download.")
        status = int(0) # hp, my, gz don't support failed.
    else:
        Logger.error("MAIN: Something failed! Please check logs. Exiting")
        sys.exit(-1)

    if inputCategory == cpsCategory:
        Logger.info("MAIN: Calling CouchPotatoServer to post-process: %s", inputName)
        download_id = inputHash
        result = autoProcessMovie.process(outputDestination, inputName, status, clientAgent, download_id)
    elif inputCategory == sbCategory:
        Logger.info("MAIN: Calling Sick-Beard to post-process: %s", inputName)
        result = autoProcessTV.processEpisode(outputDestination, inputName, status)
    elif inputCategory == hpCategory:
        Logger.info("MAIN: Calling HeadPhones to post-process: %s", inputName)
        result = autoProcessMusic.process(inputDirectory, inputName, status)
    elif inputCategory == mlCategory:
        Logger.info("MAIN: Calling Mylar to post-process: %s", inputName)
        result = autoProcessComics.processEpisode(outputDestination, inputName, status)
    elif inputCategory == gzCategory:
        Logger.info("MAIN: Calling Gamez to post-process: %s", inputName)
        result = autoProcessGames.process(outputDestination, inputName, status)

    if result == 1:
        Logger.info("MAIN: A problem was reported in the autoProcess* script. If torrent was paused we will resume seeding")

    if inputCategory == hpCategory:
        # we need to move the output dir files back...
        Logger.debug("MAIN: Moving temporary HeadPhones files back to allow seeding.")
        for item in copy_list:
            if os.path.isfile(os.path.normpath(item[1])): # check to ensure temp files still exist.
                if os.path.isfile(os.path.normpath(item[0])): # both exist, remove temp version
                    Logger.debug("MAIN: File %s still present. Removing tempoary file %s", str(item[0]), str(item[1]))
                    os.unlink(os.path.normpath(item[1]))
                    continue
                else: # move temp version back to allow seeding or Torrent removal.
                    Logger.debug("MAIN: Moving %s to %s", str(item[1]), str(item[0]))
                    shutil.move(os.path.normpath(item[1]), os.path.normpath(item[0]))
                    continue

    # Hardlink solution for uTorrent, need to implent support for deluge, transmission
    if clientAgent in ['utorrent', 'transmission']  and inputHash and useLink != "no":
        # Delete torrent and torrentdata from Torrent client if processing was successful.
        if deleteOriginal == 1 and result != 1:
            Logger.debug("MAIN: Deleting torrent %s from %s", inputName, clientAgent)
            if clientAgent == 'utorrent' and utorrentClass != "":
                utorrentClass.removedata(inputHash)
                if not inputCategory == hpCategory:
                    utorrentClass.remove(inputHash)
            if clientAgent == 'transmission' and TransmissionClass !="":
                if inputCategory == hpCategory: #don't delete actual files for hp category, just remove torrent.
                    TransmissionClass.remove_torrent(inputID, False)
                else:
                    TransmissionClass.remove_torrent(inputID, True)
        # we always want to resume seeding, for now manually find out what is wrong when extraction fails
        else:
            Logger.debug("MAIN: Starting torrent %s in %s", inputName, clientAgent)
            if clientAgent == 'utorrent' and utorrentClass != "":
                utorrentClass.start(inputHash)
            if clientAgent == 'transmission' and TransmissionClass !="":
                TransmissionClass.start_torrent(inputID)
        time.sleep(5)        
    #cleanup
    if inputCategory in processCategories and result == 0 and os.path.isdir(outputDestination):
        num_files_new = int(0)
        file_list = []
        for dirpath, dirnames, filenames in os.walk(outputDestination):
            for file in filenames:
                filePath = os.path.join(dirpath, file)
                fileName, fileExtension = os.path.splitext(file)
                if fileExtension in mediaContainer or fileExtension in metaContainer:
                    num_files_new = num_files_new + 1
                    file_list.append(file)
        if num_files_new == int(0): 
            Logger.info("All files have been processed. Cleaning outputDirectory %s", outputDestination)
            shutil.rmtree(outputDestination)
        else:
            Logger.info("outputDirectory %s still contains %s media and/or meta files. This directory will not be removed.", outputDestination, num_files_new)
            for item in file_list:
                Logger.debug("media/meta file found: %s", item)
    Logger.info("MAIN: All done.")

def external_script(outputDestination):

    result_final = int(0) # start at 0.
    num_files = int(0)
    for dirpath, dirnames, filenames in os.walk(outputDestination):
        for file in filenames:

            filePath = os.path.join(dirpath, file)
            fileName, fileExtension = os.path.splitext(file)

            if fileExtension in user_script_mediaExtensions or user_script_mediaExtensions == "ALL":
                num_files = num_files + 1
                command = [user_script]
                for param in user_script_param:
                    if param == "FN":
                        command.append(file)
                        continue
                    elif param == "FP":
                        command.append(filePath)
                        continue
                    elif param == "DN":
                        command.append(dirpath)
                        continue
                    else:
                        command.append(param)
                        continue
                Logger.info("Running script %s on file %s.", command, filePath)
                try:
                    p = Popen(command)
                    res = p.wait()
                    if str(res) in user_script_successCodes: # Linux returns 0 for successful.
                        Logger.info("UserScript %s was successfull", command[0])
                        result = int(0)
                    else:
                        Logger.error("UserScript %s has failed with return code: %s", command[0], res)
                        Logger.info("If the UserScript completed successfully you should add %s to the user_script_successCodes", res)
                        result = int(1)
                except:
                    Logger.exception("UserScript %s has failed", command[0])
                    result = int(1)
                final_result = final_result + result

    time.sleep(user_delay)
    num_files_new = int(0)
    for dirpath, dirnames, filenames in os.walk(outputDestination):
        for file in filenames:

            filePath = os.path.join(dirpath, file)
            fileName, fileExtension = os.path.splitext(file)

            if fileExtension in user_script_mediaExtensions or user_script_mediaExtensions == "ALL":
                num_files_new = num_files_new + 1

    if user_script_clean == int(1) and num_files_new == int(0) and final_result == int(0):
        Logger.info("All files have been processed. Cleaning outputDirectory %s", outputDestination)
        shutil.rmtree(outputDestination)
    elif user_script_clean == int(1) and num_files_new != int(0):
        Logger.info("%s files were processed, but %s still remain. outputDirectory will not be cleaned.", num_files, num_files_new)           
    return final_result

if __name__ == "__main__":

    #check to migrate old cfg before trying to load.
    if os.path.isfile(os.path.join(os.path.dirname(sys.argv[0]), "autoProcessMedia.cfg.sample")):
        migratecfg.migrate()
    
    # Logging
    nzbtomedia_configure_logging(os.path.dirname(sys.argv[0]))
    Logger = logging.getLogger(__name__)

    Logger.info("====================") # Seperate old from new log
    Logger.info("TorrentToMedia %s", VERSION)

    WakeUp()

    config = ConfigParser.ConfigParser()
    configFilename = os.path.join(os.path.dirname(sys.argv[0]), "autoProcessMedia.cfg")

    if not os.path.isfile(configFilename):
        Logger.error("You need an autoProcessMedia.cfg file - did you rename and edit the .sample?")
        sys.exit(-1)

    # CONFIG FILE
    Logger.info("MAIN: Loading config from %s", configFilename)
    config.read(configFilename)
                                                                                        # EXAMPLE VALUES:
    clientAgent = config.get("Torrent", "clientAgent")                                  # utorrent | deluge | transmission | other
    useLink = config.get("Torrent", "useLink")                                          # no | hard | sym
    outputDirectory = config.get("Torrent", "outputDirectory")                          # /abs/path/to/complete/
    categories = (config.get("Torrent", "categories")).split(',')                       # music,music_videos,pictures,software

    uTorrentWEBui = config.get("Torrent", "uTorrentWEBui")                              # http://localhost:8090/gui/
    uTorrentUSR = config.get("Torrent", "uTorrentUSR")                                  # mysecretusr
    uTorrentPWD = config.get("Torrent", "uTorrentPWD")                                  # mysecretpwr

    TransmissionHost = config.get("Torrent", "TransmissionHost")                        # localhost
    TransmissionPort = config.get("Torrent", "TransmissionPort")                        # 8084
    TransmissionUSR = config.get("Torrent", "TransmissionUSR")                          # mysecretusr
    TransmissionPWD = config.get("Torrent", "TransmissionPWD")                          # mysecretpwr
    
    deleteOriginal = int(config.get("Torrent", "deleteOriginal"))                       # 0
    
    compressedContainer = (config.get("Extensions", "compressedExtensions")).split(',') # .zip,.rar,.7z
    mediaContainer = (config.get("Extensions", "mediaExtensions")).split(',')           # .mkv,.avi,.divx
    metaContainer = (config.get("Extensions", "metaExtensions")).split(',')             # .nfo,.sub,.srt
    minSampleSize = int(config.get("Extensions", "minSampleSize"))                      # 200 (in MB)
    
    cpsCategory = config.get("CouchPotato", "cpsCategory")                              # movie
    sbCategory = config.get("SickBeard", "sbCategory")                                  # tv
    sbFork = config.get("SickBeard", "fork")                                            # tv
    hpCategory = config.get("HeadPhones", "hpCategory")                                 # music
    mlCategory = config.get("Mylar", "mlCategory")                                      # comics
    gzCategory = config.get("Gamez", "gzCategory")                                      # games
    categories.append(cpsCategory)
    categories.append(sbCategory)
    categories.append(hpCategory)
    categories.append(mlCategory)
    categories.append(gzCategory)

    user_script_categories = config.get("UserScript", "user_script_categories").split(',')         # NONE
    if not "NONE" in user_script_categories: 
        user_script_mediaExtensions = (config.get("UserScript", "user_script_mediaExtensions")).split(',')
        user_script = config.get("UserScript", "user_script_path")
        user_script_param = (config.get("UserScript", "user_script_param")).split(',')
        user_script_successCodes = (config.get("UserScript", "user_script_successCodes")).split(',')
        user_script_clean = int(config.get("UserScript", "user_script_clean"))
        user_delay = int(config.get("UserScript", "delay"))
    
    transcode = int(config.get("Transcoder", "transcode"))

    n = 0    
    for arg in sys.argv:
        Logger.debug("arg %s is: %s", n, arg)
        n = n+1

    try:
        inputDirectory, inputName, inputCategory, inputHash, inputID = parse_args(clientAgent)
    except:
        Logger.exception("MAIN: There was a problem loading variables")
        sys.exit(-1)

    main(inputDirectory, inputName, inputCategory, inputHash, inputID)