#.-*- coding: utf-8 -*-

import troggle.settings as settings
import troggle.expo.models as models
import csv
import re
import datetime
import os


#
# the logbook loading section
#
def GetTripPersons(trippeople, expedition, logtime_underground):
    res = [ ]
    author = None
    for tripperson in re.split(",|\+|&|&(?!\w+;)| and ", trippeople):
        tripperson = tripperson.strip()
        mul = re.match("<u>(.*?)</u>$(?i)", tripperson)
        if mul:
            tripperson = mul.group(1).strip()
        if tripperson and tripperson[0] != '*':
            #assert tripperson in personyearmap, "'%s' << %s\n\n %s" % (tripperson, trippeople, personyearmap)
            personyear = expedition.GetPersonExpedition(tripperson)
            if not personyear:
                print "NoMatchFor: '%s'" % tripperson    
            res.append((personyear, logtime_underground))
            if mul:
                author = personyear
    if not author:
        author = res[-1][0]
    return res, author

def GetTripCave(place):                     #need to be fuzzier about matching here. Already a very slow function...
#    print "Getting cave for " , place
    try:
        katastNumRes=[]
        katastNumRes=list(models.Cave.objects.filter(kataster_number=int(place)))
    except ValueError:
        pass
    officialNameRes=list(models.Cave.objects.filter(official_name=place))
    tripCaveRes=officialNameRes+katastNumRes

    if len(tripCaveRes)==1:
#        print "Place " , place , "entered as" , tripCaveRes[0]
        return tripCaveRes[0]

    elif models.OtherCaveName.objects.filter(name=place):
        tripCaveRes=models.OtherCaveName.objects.filter(name__icontains=place)[0].cave
#        print "Place " , place , "entered as" , tripCaveRes
        return tripCaveRes

    elif len(tripCaveRes)>1:
        print "Ambiguous place " + str(place) + " entered. Choose from " + str(tripCaveRes)
        correctIndex=input("type list index of correct cave")
        return tripCaveRes[correctIndex]
    else:
        print "No cave found for place " , place
        return


def EnterLogIntoDbase(date, place, title, text, trippeople, expedition, logtime_underground):
    trippersons, author = GetTripPersons(trippeople, expedition, logtime_underground)
    tripCave = GetTripCave(place)

    lbo = models.LogbookEntry(date=date, place=place, title=title[:50], text=text, author=author, expedition=expedition)
    if tripCave:
        lbo.cave=tripCave
    lbo.save()
    print "ttt", date, place
    for tripperson, time_underground in trippersons:
        pto = models.PersonTrip(person_expedition = tripperson, place=place, date=date, time_underground=time_underground,
                                logbook_entry=lbo, is_logbook_entry_author=(tripperson == author))
        pto.save()


def ParseDate(tripdate, year):
    mdatestandard = re.match("(\d\d\d\d)-(\d\d)-(\d\d)", tripdate)
    mdategoof = re.match("(\d\d?)/0?(\d)/(20|19)?(\d\d)", tripdate)
    if mdatestandard:
        assert mdatestandard.group(1) == year, (tripdate, year)
        year, month, day = int(mdatestandard.group(1)), int(mdatestandard.group(2)), int(mdatestandard.group(3))
    elif mdategoof:
        assert not mdategoof.group(3) or mdategoof.group(3) == year[:2]
        yadd = int(year[:2]) * 100
        day, month, year = int(mdategoof.group(1)), int(mdategoof.group(2)), int(mdategoof.group(4)) + yadd
    else:
        assert False, tripdate
    return datetime.date(year, month, day)

# 2007, 2008, 2006
def Parselogwikitxt(year, expedition, txt):
    trippara = re.findall("===(.*?)===([\s\S]*?)(?====)", txt)
    for triphead, triptext in trippara:
        tripheadp = triphead.split("|")
        assert len(tripheadp) == 3, (tripheadp, triptext)
        tripdate, tripplace, trippeople = tripheadp
        tripsplace = tripplace.split(" - ")
        tripcave = tripsplace[0].strip()

        tul = re.findall("T/?U:?\s*(\d+(?:\.\d*)?|unknown)\s*(hrs|hours)?", triptext)
        if tul:
            #assert len(tul) <= 1, (triphead, triptext)
            #assert tul[0][1] in ["hrs", "hours"], (triphead, triptext)
            tu = tul[0][0]
        else:
            tu = ""
            #assert tripcave == "Journey", (triphead, triptext)

        ldate = ParseDate(tripdate.strip(), year)
        #print "\n", tripcave, "---   ppp", trippeople, len(triptext)
        EnterLogIntoDbase(date = ldate, place = tripcave, title = tripplace, text = triptext, trippeople=trippeople, expedition=expedition, logtime_underground=0)

# 2002, 2004, 2005
def Parseloghtmltxt(year, expedition, txt):
    tripparas = re.findall("<hr\s*/>([\s\S]*?)(?=<hr)", txt)
    for trippara in tripparas:
        s = re.match('''(?x)\s*(?:<a\s+id="(.*?)"\s*/>)?
                            \s*<div\s+class="tripdate"\s*(?:id="(.*?)")?>(.*?)</div>
                            \s*<div\s+class="trippeople">\s*(.*?)</div>
                            \s*<div\s+class="triptitle">\s*(.*?)</div>
                            ([\s\S]*?)
                            \s*(?:<div\s+class="timeug">\s*(.*?)</div>)?
                            \s*$
                     ''', trippara)
        assert s, trippara

        tripid, tripid1, tripdate, trippeople, triptitle, triptext, tu = s.groups()
        ldate = ParseDate(tripdate.strip(), year)
        #assert tripid[:-1] == "t" + tripdate, (tripid, tripdate)
        trippeople = re.sub("Ol(?!l)", "Olly", trippeople)        
        trippeople = re.sub("Wook(?!e)", "Wookey", trippeople)        
        triptitles = triptitle.split(" - ")
        if len(triptitles) >= 2:
            tripcave = triptitles[0]
        else:
            tripcave = "UNKNOWN"
        #print "\n", tripcave, "---   ppp", trippeople, len(triptext)
        ltriptext = re.sub("</p>", "", triptext)
        ltriptext = re.sub("\s*?\n\s*", " ", ltriptext)
        ltriptext = re.sub("<p>", "\n\n", ltriptext).strip()
        EnterLogIntoDbase(date = ldate, place = tripcave, title = triptitle, text = ltriptext, trippeople=trippeople, expedition=expedition, logtime_underground=0)


# main parser for pre-2001.  simpler because the data has been hacked so much to fit it
def Parseloghtml01(year, expedition, txt):
    tripparas = re.findall("<hr[\s/]*>([\s\S]*?)(?=<hr)", txt)
    for trippara in tripparas:
        s = re.match(u"(?s)\s*(?:<p>)?(.*?)</?p>(.*)$(?i)", trippara)
        assert s, trippara[:100]
        tripheader, triptext = s.group(1), s.group(2)
        mtripid = re.search('<a id="(.*?)"', tripheader)
        tripid = mtripid and mtripid.group(1) or ""
        tripheader = re.sub("</?(?:[ab]|span)[^>]*>", "", tripheader)

        #print [tripheader]
        #continue

        tripdate, triptitle, trippeople = tripheader.split("|")
        ldate = ParseDate(tripdate.strip(), year)

        mtu = re.search('<p[^>]*>(T/?U.*)', triptext)
        if mtu:
            tu = mtu.group(1)
            triptext = triptext[:mtu.start(0)] + triptext[mtu.end():]
        else:
            tu = ""

        triptitles = triptitle.split(" - ")
        tripcave = triptitles[0].strip()

        ltriptext = triptext
        
        mtail = re.search('(?:<a href="[^"]*">[^<]*</a>|\s|/|-|&amp;|</?p>|\((?:same day|\d+)\))*$', ltriptext)
        if mtail:
            #print mtail.group(0)
            ltriptext = ltriptext[:mtail.start(0)]
        ltriptext = re.sub("</p>", "", ltriptext)
        ltriptext = re.sub("\s*?\n\s*", " ", ltriptext)
        ltriptext = re.sub("<p>|<br>", "\n\n", ltriptext).strip()
        #ltriptext = re.sub("[^\s0-9a-zA-Z\-.,:;'!]", "NONASCII", ltriptext)
        ltriptext = re.sub("</?u>", "_", ltriptext)
        ltriptext = re.sub("</?i>", "''", ltriptext)
        ltriptext = re.sub("</?b>", "'''", ltriptext)
        

        #print ldate, trippeople.strip()
            # could includ the tripid (url link for cross referencing)
        EnterLogIntoDbase(date = ldate, place = tripcave, title = triptitle, text = ltriptext, trippeople=trippeople, expedition=expedition, logtime_underground=0)


def Parseloghtml03(year, expedition, txt):
    tripparas = re.findall("<hr\s*/>([\s\S]*?)(?=<hr)", txt)
    for trippara in tripparas:
        s = re.match(u"(?s)\s*<p>(.*?)</p>(.*)$", trippara)
        assert s, trippara
        tripheader, triptext = s.group(1), s.group(2)
        tripheader = re.sub("&nbsp;", " ", tripheader)
        tripheader = re.sub("\s+", " ", tripheader).strip()
        sheader = tripheader.split(" -- ")
        tu = ""
        if re.match("T/U|Time underwater", sheader[-1]):
            tu = sheader.pop()
        if len(sheader) != 3:
            print sheader
        #    continue
        tripdate, triptitle, trippeople = sheader
        ldate = ParseDate(tripdate.strip(), year)
        triptitles = triptitle.split(" , ")
        if len(triptitles) >= 2:
            tripcave = triptitles[0]
        else:
            tripcave = "UNKNOWN"
        #print tripcave, "---   ppp", triptitle, trippeople, len(triptext)
        ltriptext = re.sub("</p>", "", triptext)
        ltriptext = re.sub("\s*?\n\s*", " ", ltriptext)
        ltriptext = re.sub("<p>", "\n\n", ltriptext).strip()
        ltriptext = re.sub("[^\s0-9a-zA-Z\-.,:;'!&()\[\]<>?=+*%]", "_NONASCII_", ltriptext)
        EnterLogIntoDbase(date = ldate, place = tripcave, title = triptitle, text = ltriptext, trippeople=trippeople, expedition=expedition, logtime_underground=0)

yearlinks = [ 
                ("2008", "2008/2008logbook.txt", Parselogwikitxt), 
                ("2007", "2007/2007logbook.txt", Parselogwikitxt), 
                ("2006", "2006/logbook/logbook_06.txt", Parselogwikitxt), 
                ("2005", "2005/logbook.html", Parseloghtmltxt), 
                ("2004", "2004/logbook.html", Parseloghtmltxt), 
                ("2003", "2003/logbook.html", Parseloghtml03), 
                ("2002", "2002/logbook.html", Parseloghtmltxt), 
                ("2001", "2001/log.htm", Parseloghtml01), 
                ("2000", "2000/log.htm", Parseloghtml01), 
                ("1999", "1999/log.htm", Parseloghtml01), 
                ("1998", "1998/log.htm", Parseloghtml01), 
                ("1997", "1997/log.htm", Parseloghtml01), 
                #("1996", "1996/log.htm", Parseloghtml01), 
            ]

def SetDatesFromLogbookEntries(expedition):
    for personexpedition in expedition.personexpedition_set.all():
        persontrips = personexpedition.persontrip_set.order_by('date')
        personexpedition.date_from = min([persontrip.date  for persontrip in persontrips] or [None])
        personexpedition.date_to = max([persontrip.date  for persontrip in persontrips] or [None])
        personexpedition.save()
    
        lprevpersontrip = None
        for persontrip in persontrips:
            persontrip.persontrip_prev = lprevpersontrip
            if lprevpersontrip:
                lprevpersontrip.persontrip_next = persontrip
                lprevpersontrip.save()
            persontrip.persontrip_next = None
            lprevpersontrip = persontrip
            persontrip.save()
            
    # from trips rather than logbook entries, which may include events outside the expedition
    expedition.date_from = min([personexpedition.date_from  for personexpedition in expedition.personexpedition_set.all()  if personexpedition.date_from] or [None])
    expedition.date_to = max([personexpedition.date_to  for personexpedition in expedition.personexpedition_set.all()  if personexpedition.date_to] or [None])
    expedition.save()
    
    # order by appearance in the logbook (done by id)
    lprevlogbookentry = None
    for logbookentry in expedition.logbookentry_set.order_by('id'):
        logbookentry.logbookentry_prev = lprevlogbookentry
        if lprevlogbookentry:
            lprevlogbookentry.logbookentry_next = logbookentry
            lprevlogbookentry.save()
        logbookentry.logbookentry_next = None
        logbookentry.save()
        lprevlogbookentry = logbookentry
        
    # order by date for setting the references
    lprevlogbookentry = None
    for logbookentry in expedition.logbookentry_set.order_by('date'):
        if lprevlogbookentry and lprevlogbookentry.date == logbookentry.date:
            mcount = re.search("_(\d+)$", lprevlogbookentry.href)
            mc = mcount and (int(mcount.group(1)) + 1) or 1
            logbookentry.href = "%s_%d" % (logbookentry.date, mc)
        else:
            logbookentry.href = "%s" % logbookentry.date
        logbookentry.save()
        lprevlogbookentry = logbookentry
        
        
def LoadLogbookForExpedition(expedition):
    expedition.logbookentry_set.all().delete()
    models.PersonTrip.objects.filter(person_expedition__expedition=expedition).delete()
    expowebbase = os.path.join(settings.EXPOWEB, "years")  
    year = str(expedition.year)
    for lyear, lloc, parsefunc in yearlinks:
        if lyear == year:
            break
    fin = open(os.path.join(expowebbase, lloc))
    txt = fin.read()
    fin.close()
    parsefunc(year, expedition, txt)
    SetDatesFromLogbookEntries(expedition)
    return "TOLOAD: " + year + "  " + str(expedition.personexpedition_set.all()[1].logbookentry_set.count()) + "  " + str(models.PersonTrip.objects.filter(person_expedition__expedition=expedition).count())


def LoadLogbooks():
    models.LogbookEntry.objects.all().delete()
    expowebbase = os.path.join(settings.EXPOWEB, "years")  
    #yearlinks = [ ("2001", "2001/log.htm", Parseloghtml01), ] #overwrite
    #yearlinks = [ ("1997", "1997/log.htm", Parseloghtml01),] # overwrite

    for year, lloc, parsefunc in yearlinks:
        expedition = models.Expedition.objects.filter(year = year)[0]
        fin = open(os.path.join(expowebbase, lloc))
        txt = fin.read()
        fin.close()
        parsefunc(year, expedition, txt)
        SetDatesFromLogbookEntries(expedition)