import datetime
import os.path
import re
import operator
from collections import OrderedDict

import django.db.models
from django.db.models import Min, Max
from django.shortcuts import render
from django.template import Context, loader
from django.template.defaultfilters import slugify
from django.utils import timezone
#from django.views.generic.list import ListView

from troggle.core.models.troggle import Expedition, Person, PersonExpedition, DataIssue
from troggle.core.models.caves import Cave, LogbookEntry, Entrance
from troggle.core.models.survex import SurvexBlock, SurvexStation
from troggle.parsers.people import GetPersonExpeditionNameLookup, foreign_friends

import troggle.settings as settings

'''Very simple report pages summarizing data about the whole set of expeditions and of
the status of data inconsistencies
'''

def pathsreport(request):
    pathsdict = OrderedDict()
    try:
        pathsdict = {
#       "BOGUS" : str( settings.BOGUS),
        "JSLIB_URL" : str( settings.JSLIB_URL),
        "JSLIB_ROOT" : str( settings.JSLIB_ROOT),
#       "CSSLIB_URL" : str( settings.CSSLIB_URL),
        "CAVEDESCRIPTIONS" : str( settings.CAVEDESCRIPTIONS),
        "DIR_ROOT" : str( settings.DIR_ROOT),
        "ENTRANCEDESCRIPTIONS" : str( settings.ENTRANCEDESCRIPTIONS),
        "EXPOUSER_EMAIL" : str( settings.EXPOUSER_EMAIL),
        "EXPOUSERPASS" : str("<redacted>"),
        "EXPOUSER" : str( settings.EXPOUSER),
        "EXPOWEB" : str( settings.EXPOWEB),
        "EXPOWEB_URL" : str( settings.EXPOWEB_URL),
#       "FILES" : str( settings.FILES),
        "LIBDIR" : str( settings.LIBDIR),
        "LOGFILE" : str( settings.LOGFILE),
        "LOGIN_REDIRECT_URL" : str( settings.LOGIN_REDIRECT_URL),
        "MEDIA_ROOT" : str( settings.MEDIA_ROOT),
        "MEDIA_URL" : str( settings.MEDIA_URL),
        "PHOTOS_URL" : str( settings.PHOTOS_URL),
        "PYTHON_PATH" : str( settings.PYTHON_PATH),
        "REPOS_ROOT_PATH" : str( settings.REPOS_ROOT_PATH),
        "ROOT_URLCONF" : str( settings.ROOT_URLCONF),
        "STATIC_URL" : str( settings.STATIC_URL),
        "SURVEX_DATA" : str( settings.SURVEX_DATA),
        "SCANS_ROOT" : str( settings.SCANS_ROOT),
#       "SURVEYS" : str( settings.SURVEYS),
#       "SCANS_URL" : str( settings.SCANS_URL),
        "SURVEXPORT" : str( settings.SURVEXPORT),
        "DRAWINGS_DATA" : str( settings.DRAWINGS_DATA),
        "URL_ROOT" : str( settings.URL_ROOT)
        }
    except:
        pathsdict["! EXCEPTION !"] = "missing or exta string constant in troggle/settings"

    pathstype = OrderedDict()
    try:
        pathstype = {
#       "BOGUS" : type(settings.BOGUS),
        "JSLIB_URL" : type(settings.JSLIB_URL),
        "JSLIB_ROOT" : type( settings.JSLIB_ROOT),
#       "CSSLIB_URL" : type(settings.CSSLIB_URL),
        "CAVEDESCRIPTIONS" : type(settings.CAVEDESCRIPTIONS),
        "DIR_ROOT" : type(settings.DIR_ROOT),
        "ENTRANCEDESCRIPTIONS" : type(settings.ENTRANCEDESCRIPTIONS),
        "EXPOUSER_EMAIL" : type(settings.EXPOUSER_EMAIL),
        "EXPOUSERPASS" : type(settings.EXPOUSERPASS),
        "EXPOUSER" : type(settings.EXPOUSER),
        "EXPOWEB" : type(settings.EXPOWEB),
        "EXPOWEB_URL" : type(settings.EXPOWEB_URL),
#       "FILES" : type(settings.FILES),
        "LIBDIR" : type( settings.LIBDIR),
        "LOGFILE" : type(settings.LOGFILE),
        "LOGIN_REDIRECT_URL" : type(settings.LOGIN_REDIRECT_URL),
        "MEDIA_ROOT" : type(settings.MEDIA_ROOT),
        "MEDIA_URL" : type(settings.MEDIA_URL),
        "PHOTOS_URL" : type(settings.PHOTOS_URL),
        "PYTHON_PATH" : type(settings.PYTHON_PATH),
        "REPOS_ROOT_PATH" : type(settings.REPOS_ROOT_PATH),
        "ROOT_URLCONF" : type(settings.ROOT_URLCONF),
        "STATIC_URL" : type(settings.STATIC_URL),
        "SURVEX_DATA" : type(settings.SURVEX_DATA),
        "SCANS_ROOT" : type(settings.SCANS_ROOT),
#       "SURVEYS" : type(settings.SURVEYS),
#       "SCANS_URL" : type(settings.SCANS_URL),
        "SURVEXPORT" : type(settings.SURVEXPORT),
        "DRAWINGS_DATA" : type(settings.DRAWINGS_DATA),
        "URL_ROOT" : type(settings.URL_ROOT)
        }
    except:
        pathstype["! EXCEPTION !"] = "missing or exta string constant in troggle/settings"
        raise

    # settings are unique by paths are not
    ncodes = len(pathsdict)
    bycodeslist = sorted(pathsdict.items()) # a list of tuples
    bycodeslist2 = []

    for k, p in bycodeslist:
        bycodeslist2.append((k, p, str(pathstype[k])))
    
    bypaths = sorted(pathsdict.values()) # a list 
    bypathslist = []
    
    for p in bypaths:
        for k in pathsdict.keys():
            if pathsdict[k] == p:
                bypathslist.append((p, k, str(pathstype[k])))
                del pathsdict[k]
                break

    return render(request, 'pathsreport.html', { 
        "pathsdict":pathsdict, 
        "bycodeslist":bycodeslist2, 
        "bypathslist":bypathslist, 
        "ncodes":ncodes})

def stats(request):
    statsDict={}
    statsDict['expoCount'] = "{:,}".format(Expedition.objects.count())
    statsDict['caveCount'] = "{:,}".format(Cave.objects.count())
    statsDict['personCount'] = "{:,}".format(Person.objects.count())
    statsDict['logbookEntryCount'] = "{:,}".format(LogbookEntry.objects.count())

    legsbyexpo = [ ]
    addupsurvexlength = 0
    addupsurvexlegs = 0
    for expedition in Expedition.objects.all():
        survexblocks = expedition.survexblock_set.all()
        legsyear=0
        survexleglength = 0.0
        for survexblock in survexblocks:
            survexleglength += survexblock.legslength
            legsyear += int(survexblock.legsall)
        addupsurvexlength += survexleglength
        addupsurvexlegs += legsyear
        legsbyexpo.append((expedition, {"nsurvexlegs": "{:,}".format(legsyear), 
                "survexleglength":"{:,.0f}".format(survexleglength)}))
    legsbyexpo.reverse() 

    renderDict = {**statsDict, **{ "addupsurvexlength":addupsurvexlength/1000, "legsbyexpo":legsbyexpo, "nsurvexlegs":addupsurvexlegs }} # new syntax
    return render(request,'statistics.html',  renderDict)

def dataissues(request):
    '''Each issue has a parser, a message and a url linking to the offending object after loading
    '''
    def myFunc(di):
        return di.parser.lower() + di.message.lower()
        
    dilist = list(DataIssue.objects.all())
    dilist.sort(key = myFunc)        
 
    return render(request,'dataissues.html',  {'didict': dilist})

def eastings(request):
    '''report each Northing/Easting pair wherever recorded
    '''
    ents = []
    entrances = Entrance.objects.all()
    for e in entrances:
        if e.easting or e.northing:
            ents.append(e)
 
    stations = SurvexStation.objects.all()
 
    return render(request,'eastings.html',  {'ents': ents, 'stations': stations})
    
def aliases(request, year):
    '''Page which displays a list of all the person aliases in a specific year 
    '''
    
    if not year:
        year = 1998
    expo = Expedition.objects.filter(year=year)[0] # returns a set, even though we know there is only one
    personexpeditions = PersonExpedition.objects.filter(expedition=expo)
    persons = list(Person.objects.all().order_by('last_name'))
   
   
    aliases = GetPersonExpeditionNameLookup(expo)
    
    aliasdict={}
    for i in sorted(aliases):
       aliasdict[i]=aliases[i]
    invert ={}

 
    return render(request,'aliases.html',  {'year': year, 'aliasdict': aliasdict, 
        'foreign_friends': foreign_friends, 'invert': invert,'personexpeditions': personexpeditions, 'persons': persons})