# -*- coding: utf-8 -*-
# vi:si:et:sw=4:sts=4:ts=4
from __future__ import division
import os.path
import re
from datetime import datetime
from urllib2 import unquote
import json
import mimetypes

from django import forms
from django.core.paginator import Paginator
from django.contrib.auth.decorators import login_required
from django.contrib.auth.models import User
from django.db.models import Q, Avg, Count
from django.http import HttpResponse, Http404
from django.shortcuts import render_to_response, get_object_or_404, get_list_or_404
from django.template import RequestContext
from django.conf import settings

try:
    import simplejson as json
except ImportError:
    from django.utils import simplejson as json

from oxdjango.decorators import login_required_json
from oxdjango.shortcuts import render_to_json_response, get_object_or_404_json, json_response
from oxdjango.http import HttpFileResponse
import oxlib

import models
import utils
from daemon import send_bg_message

from oxuser.models import getUserJSON
from oxuser.views import api_login, api_logout, api_register, api_contact, api_recover, api_preferences

    
def api(request):
    if request.META['REQUEST_METHOD'] == "OPTIONS":
        response = HttpResponse('')
        #response = render_to_json_response({'status': {'code': 200, 'text': 'please use POST'}})
        response['Access-Control-Allow-Origin'] = '*'
        return response
    if not 'action' in request.POST:
        return apidoc(request)
    function = request.POST['action']
    #FIXME: possible to do this in f
    #data = json.loads(request.POST['data'])

    #FIXME: security considerations, web facing api should not call anything in globals!!!
    f = globals().get('api_'+function, None)
    if f:
        response = f(request)
    else:
        response = render_to_json_response(json_response(status=400,
                                text='Unknown function %s' % function))
    #response['Access-Control-Allow-Origin'] = '*'
    return response

def api_hello(request):
    '''
        return {'status': {'code': int, 'text': string},
                'data': {user: object}}
    '''
    response = json_response({})
    if request.user.is_authenticated():
        response['data']['user'] = getUserJSON(request.user)
    else:
        response['data']['user'] = {'name': 'Guest', 'group': 'guest', 'preferences': {}}
    return render_to_json_response(response)

def api_error(request):
    '''
        trows 503 error
    '''
    success = error_is_success
    return render_to_json_response({})

def _order_query(qs, s, prefix='sort__'):
    order_by = []
    for e in s.split(','):
        o = e.split(':')
        if len(o) == 1: o.append('asc')
        order = {'id': 'movieId'}.get(o[0], o[0])
        order = '%s%s' % (prefix, order)
        if o[1] == 'desc':
           order = '-%s' % order
        order_by.append(order)
    if order_by:
        qs = qs.order_by(*order_by)
    return qs

def _parse_query(request):
    get = json.loads(request.POST['data'])
    query = {}
    query['i'] = 0
    query['o'] = 100
    query['s'] = 'title:asc'
    def parse_dict(s):
        d = s.split(",")
        return [i.strip() for i in d]
    _dicts = ['p', ]
    _ints = ['n', ]
    for key in ('s', 'p', 'g', 'l', 'n'):
        if key in get:
            if key in _ints:
                query[key] = int(get[key])
            elif key in _dicts:
                query[key] = parse_dict(get[key])
            else:
                query[key] = get[key]
    query['q'] = models.Movie.objects.find(request)
    if 'r' in get:
        r = get['r'].split(':')
        if len(r) == 1: r.append(0)
        if r[0] == '': r[0] = 0
        if r[1] == '': r[0] = -1
        query['i'] = int(r[0])
        query['o'] = int(r[1])
    #group by only allows sorting by name or number of itmes
    return query

def api_find(request):
    '''
        param data
            {'q': query, 's': sort, 'r': range}
        
            q:  query string, can contain field:search more on query syntax at
                   http://wiki.0xdb.org/wiki/QuerySyntax
            s:  comma seperated list of field:order, default: director:asc,year:desc 
            r:  result ragne, from:to or from
            p:  properties to return, if obmited stats are returned
            g:  group elements by, country, genre, director...

        with p, items is list of dicts with requested properties:
          return {'status': {'code': int, 'text': string},
                'data': {items: array}}

        with g, items contains list of {'title': string, 'items': int}:
          return {'status': {'code': int, 'text': string},
                'data': {items: array}}

        with g + n=1, return number of items in given query
          return {'status': {'code': int, 'text': string},
                'data': {items: int}}

        without p or g, return stats about query:
          return {'status': {'code': int, 'text': string},
                'data': {items=int, files=int, pixels=int, size=int, duration=int}}
    '''
    query = _parse_query(request)
    response = json_response({})
    if 'p' in query:
        response['data']['items'] = []
        qs = _order_query(query['q'], query['s'])
        if 'n' in query:
            response = {'items': qs.count()}
        else:
            _p = query['p']
            def only_p(m):
                r = {}
                if m:
                    m = json.loads(m)
                    for p in _p:
                        r[p] = m[p]
                return r
            qs = qs[query['i']:query['o']]

            response['data']['items'] = [only_p(m['json']) for m in qs.values('json')]

    elif 'g' in query:
        if query['s'].split(':')[0] not in ('name', 'items'):
            query['s'] = 'name'
        #FIXME: also filter lists here
        response['data']['items'] = []
        name = 'name'
        items = 'movies'
        movie_qs = query['q']
        _objects = {
            'country': models.Country.objects,
            'genre': models.Genre.objects,
            'language': models.Language.objects,
            'director': models.Person.objects.filter(cast__role='directors'),
        }
        if query['g'] in _objects:
            qs = _objects[query['g']].filter(movies__id__in=movie_qs).values('name').annotate(movies=Count('movies'))
        elif query['g'] == "year":
            qs = movie_qs.values('imdb__year').annotate(movies=Count('id'))
            name='imdb__year'
        if 'n' in query:
            response['data']['items'] = qs.count()
        else:
            #replace normalized items/name sort with actual db value
            order_by = query['s'].split(":")
            if len(order_by) == 1:
                order_by.append('desc')
            if order_by[0] == 'name':
                order_by = "%s:%s" % (name, order_by[1])
            else:
                order_by = "%s:%s" % (items, order_by[1])
            qs = _order_query(qs, order_by, '')
            qs = qs[query['i']:query['o']]

            response['data']['items'] = [{'title': i[name], 'items': i[items]} for i in qs]

    else:
        #FIXME: also filter lists here
        movies = models.Movie.objects.filter(available=True)
        files = models.File.objects.all()
        response['data']['items'] = movies.count()
        response['data']['files'] = files.count()
        r = files.aggregate(Count('size'), Count('pixels'), Count('duration'))
        response['data']['pixels'] = r['pixels__count']
        response['data']['size'] = r['size__count']
        response['data']['duration'] = r['duration__count']
    return render_to_json_response(response)

def api_getItem(request):
    '''
        param data
            string id

		return item array
    '''
    response = json_response({})
    itemId = json.loads(request.POST['data'])
    item = get_object_or_404_json(models.Movie, movieId=itemId)
	#FIXME: check permissions
	response['data'] = {'item': item.json}
    return render_to_json_response(response)

@login_required_json
def api_editItem(request):
    '''
        param data
            {id: string, key: value,..}
        return {'status': {'code': int, 'text': string},
                'data': {}}
    '''
    data = json.loads(request.POST['data'])
    item = get_object_or_404_json(models.Movie, movieId=data['id'])
    if item.editable(request.user):
        response = json_response(status=501, text='not implemented')
		item.edit(data)
	else:
        response = json_response(status=403, text='permissino denied')
    return render_to_json_response(response)

@login_required_json
def api_removeItem(request):
    '''
        param data
            string id

        return {'status': {'code': int, 'text': string}}
    '''
    response = json_response({})
    itemId = json.loads(request.POST['data'])
    item = get_object_or_404_json(models.Movie, movieId=itemId)
	if item.editable(request.user):
        response = json_response(status=501, text='not implemented')
	else:
        response = json_response(status=403, text='permissino denied')
    return render_to_json_response(response)

@login_required_json
def api_addLayer(request):
    '''
        param data
            {key: value}
        return {'status': {'code': int, 'text': string},
                'data': {}}
    '''
    response = {'status': {'code': 501, 'text': 'not implemented'}}
    return render_to_json_response(response)

@login_required_json
def api_removeLayer(request):
    '''
        param data
            {key: value}
        return {'status': {'code': int, 'text': string},
                'data': {}}
    '''
    response = {'status': {'code': 501, 'text': 'not implemented'}}
    return render_to_json_response(response)

@login_required_json
def api_editLayer(request):
    '''
        param data
            {key: value}
        return {'status': {'code': int, 'text': string},
                'data': {}}
    '''
    response = json_response({})
    data = json.loads(request.POST['data'])
    layer = get_object_or_404_json(models.Layer, pk=data['id'])
	if layer.editable(request.user):
		response = json_response(status=501, text='not implemented')
	else:
		response = json_response(status=403, text='permission denied')
    return render_to_json_response(response)

    response = json_response(status=501, text='not implemented')
    return render_to_json_response(response)

@login_required_json
def api_addListItem(request):
    '''
        param data
            {key: value}
        return {'status': {'code': int, 'text': string},
                'data': {}}
    '''
    response = json_response(status=501, text='not implemented')
    return render_to_json_response(response)

@login_required_json
def api_removeListItem(request):
    '''
        param data
            {key: value}
        return {'status': {'code': int, 'text': string},
                'data': {}}
    '''
    response = json_response(status=501, text='not implemented')
    return render_to_json_response(response)

@login_required_json
def api_addList(request):
    '''
        param data
            {key: value}
        return {'status': {'code': int, 'text': string},
                'data': {}}
    '''
    response = json_response(status=501, text='not implemented')
    return render_to_json_response(response)

@login_required_json
def api_editList(request):
    '''
        param data
            {key: value}
        return {'status': {'code': int, 'text': string},
                'data': {}}
    '''
    response = json_response(status=501, text='not implemented')
    return render_to_json_response(response)

def api_removeList(request):
    '''
        param data
            {key: value}
        return {'status': {'code': int, 'text': string},
                'data': {}}
    '''
    response = json_response(status=501, text='not implemented')
    return render_to_json_response(response)

@login_required_json
def api_addArchive(request):
    '''
        ARCHIVE API NEEDS CLEANUP
        param data
            {name: string}
        return {'status': {'code': int, 'text': string},
                'data': {}}
    '''
    data = json.loads(request.POST['data'])
    try:
        archive = models.Archive.objects.get(name=data['name'])
        response = {'status': {'code': 401, 'text': 'archive with this name exists'}}
    except models.Archive.DoesNotExist:
        archive = models.Archive(name=data['name'])
        archive.save()
        archive.users.add(request.user)
        response = json_response({})
        response['status']['text'] = 'archive created'
    return render_to_json_response(response)

@login_required_json
def api_editArchive(request):
    '''
        ARCHIVE API NEEDS CLEANUP
        param data
            {id: string, key: value,..}
        return {'status': {'code': int, 'text': string},
                'data': {}}
    '''
    data = json.loads(request.POST['data'])
    item = get_object_or_404_json(models.Archive, name=data['name'])
    if item.editable(request.user):
		response = json_response(status=501, text='not implemented')
		item.edit(data)
	else:
		response = json_response(status=403, text='permission denied')
    return render_to_json_response(response)

@login_required_json
def api_removeArchive(request):
    '''
        ARCHIVE API NEEDS CLEANUP
        param data
            string id

        return {'status': {'code': int, 'text': string}}
    '''
    response = json_response({})
    itemId = json.loads(request.POST['data'])
    item = get_object_or_404_json(models.Archive, movieId=itemId)
	if item.editable(request.user):
		response = json_response(status=501, text='not implemented')
	else:
		response = json_response(status=403, text='permission denied')
    return render_to_json_response(response)



#@login_required_json
def api_update(request):
    '''
        param data
            {archive: string, files: json}
        return {'status': {'code': int, 'text': string},
                'data': {info: object, rename: object}}
    '''
    data = json.loads(request.POST['data'])
    archive = data['archive']
    files = data['files']
    archive = get_object_or_404_json(models.Archive, name=archive)
    if archive.editable(request.user):
		needs_data = []
		rename = {}
		for oshash in files:
			data = files[oshash]
			q = models.ArchiveFile.objects.filter(archive=archive, file__oshash=oshash)
			if q.count() == 0:
				#print "adding file", oshash, data['path']
				f = models.ArchiveFile.get_or_create(archive, oshash)
				f.update(data)
				if not f.file.movie:
					send_bg_message({'findMovie': f.file.id})
				#FIXME: only add if it was not in File
			else:
				f = q[0]
				if data['path'] != f.path:
					f.path = data['path']
					f.save()
			if f.file.needs_data:
				needs_data.append(oshash)
			if f.path != f.file.path:
				rename[oshash] = f.file.path
		#print "processed files for", archive.name
		#remove all files not in files.keys() from ArchiveFile
        response = json_response({'info': needs_data, 'rename': rename})
	else:
		response = json_response(status=403, text='permission denied')
    return render_to_json_response(response)

def api_encodingSettings(request):
    '''
        returns Firefogg encoding settings as specified by site
        return {'status': {'code': int, 'text': string},
                'data': {'options': {'videoQuality':...}}}
    '''
    response = json_response({'options': settings.VIDEO_ENCODING[settings.VIDEO_PROFILE]})
    return render_to_json_response(response)

class UploadForm(forms.Form):
    data = forms.TextInput()
    file = forms.FileField()

class VideoChunkForm(forms.Form):
    chunk = forms.FileField()
    done = forms.IntegerField(required=False)

@login_required_json
def api_upload(request): #video, timeline, frame
    '''
        upload video, timeline or frame
        param data
        param file
        return {'status': {'code': int, 'text': string},
                'data': {}}
    '''
    form = UploadForm(request.POST, request.FILES)
    if form.is_valid():
        data = json.loads(request.POST['data'])
        oshash = data['oshash']
        f = get_object_or_404(models.File, oshash=oshash)
        if data['item'] == 'frame':
            ff = form.cleaned_data['file']
            position = data['position']
            frame, created = models.Frame.objects.get_or_create(file=f, position=position)
            if not created and frame.frame:
                frame.frame.delete()
            frame.frame.save(ff.name, ff)
            frame.save()
            response = json_response({'url': frame.frame.url})
            return render_to_json_response(response)
        if data['item'] == 'timeline':
            pass
            #print "not implemented"

    response = json_response(status=501, text='not implemented')
    return render_to_json_response(response)

@login_required_json
def firefogg_upload(request):
    #handle video upload
    if request.method == 'POST':
        #init upload
        if 'oshash' in request.POST:
            #FIXME: what to do if requested oshash is not in db?
            #FIXME: should existing data be reset here? or better, should this fail if an upload was there
            f = get_object_or_404(models.File, oshash=request.POST['oshash'])
            stream = getattr(f, 'stream_%s'%settings.VIDEO_UPLOAD)
            if stream:
                stream.delete()
            f.available = False
            f.save()
            response = {
                'uploadUrl': request.build_absolute_uri('/api/upload/?oshash=%s' % f.oshash),
                'result': 1
            }
            return render_to_json_response(response)
        #post next chunk
        if 'chunk' in request.FILES and 'oshash' in request.GET:
            print "all chunk now"
            f = get_object_or_404(models.File, oshash=request.GET['oshash'])
            form = VideoChunkForm(request.POST, request.FILES)
            #FIXME: 
            if form.is_valid() and f.editable(request.user):
                c = form.cleaned_data['chunk']
                response = {
                    'result': 1,
                    'resultUrl': request.build_absolute_uri('/')
                }
                if not f.save_chunk(c, c.name):
                    response['result'] = -1
                elif form.cleaned_data['done']:
                    #FIXME: send message to encode deamon to create derivates instead
                    f.available = True
                    f.save()
                    response['result'] = 1
                    response['done'] = 1
                return render_to_json_response(response)
    print request.GET, request.POST
    response = json_response(status=400, text='this request requires POST')
    return render_to_json_response(response)

@login_required_json
def api_editFile(request): #FIXME: should this be file.files. or part of update
    '''
        change file / imdb link
    '''
    response = json_response(status=501, text='not implemented')
    return render_to_json_response(response)

def api_parse(request): #parse path and return info
    '''
        param data
            {path: string}
        return {'status': {'code': int, 'text': string},
                data: {imdb: string}}
    '''
    path = json.loads(request.POST['data'])['path']
    response = json_response(utils.parsePath(path))
    return render_to_json_response(response)

def api_getImdbId(request):
    '''
        param data
            {title: string, director: string, year: string}
        return {'status': {'code': int, 'text': string},
                'data': {imdbId:string }}
    '''
    imdbId = oxweb.imdb.guess(search_title, r['director'], timeout=-1)
    if imdbId:
        response = json_response({'imdbId': imdbId})
    else:
		response = json_response(status=404, text='not found')
    return render_to_json_response(response)

def api_fileInfo(request):
    '''
        param data
            oshash string
        return {'status': {'code': int, 'text': string},
                'data': {imdbId:string }}
    '''
    if 'data' in request.POST:
		oshash = json.loads(request.POST['data'])
	elif 'oshash' in request.GET:
		oshash = request.GET['oshash']
    f = models.MovieFile.objects.get(oshash=oshash)
    response = {'data': f.json()}
    return render_to_json_response(response)

def api_subtitles(request):
	'''
	param data
		oshash string
		language string
		subtitle string
	return
		if no language is provided:
			{data: {languages: array}}
		if language is set:
			{data: {subtitle: string}}
		if subtitle is set:
			saves subtitle for given language
	'''
    if 'data' in request.POST:
		data = json.loads(request.POST['data'])
		oshash = data['oshash']
		language = data.get('language', None)
		srt = data.get('subtitle', None)
	if srt:
        user = request.user
        sub = models.Subtitles.objects.get_or_create(user, oshash, language)
        sub.srt = srt
        sub.save()
    else:
        response = json_response({})
        if language:
            q = models.Subtitles.objects.filter(movie_file__oshash=oshash, language=language)
            if q.count() > 0:
				response['data']['subtitle'] = q[0].srt
				return render_to_json_response(response)
        l = models.Subtitles.objects.filter(movie_file__oshash=oshash).values('language')
        response['data']['languages'] = [f['language'] for f in l]
        return render_to_json_response(response)
    
def video(request, id, quality):
    movie = get_object_or_404(models.Movie, movieId=id)
    if quality not in settings.VIDEO_ENCODING:
        raise Http404
    stream = getattr(movie, 'stream_'+quality)
    response = HttpFileResponse(stream.path, content_type='video/ogg')
    #FIXME: movie needs duration field
    #response['Content-Duration'] = movie.duration
    return response

def frame(request, id, position, size):
    movie = get_object_or_404(models.Movie, movieId=id)
    position = oxlib.time2ms(position)/1000
    frame = movie.frame(position, int(size))
    if not frame:
        raise Http404
    return HttpFileResponse(frame, content_type='image/jpeg')

'''
GET list
    > {
      "files": {
        "a41cde31c581e11d": {"path": "E/Example, The/An Example.avi", "size":1646274},
      }
    }
'''
@login_required_json
def list_files(request):
    response = {}
    response['files'] = {}
    qs = models.UserFile.filter(user=request.user)
    p = Paginator(qs, 1000)
    for i in p.page_range:
        page = p.page(i)
        for f in page.object_list:
              response['files'][f.movie_file.oshash] = {'path': f.path, 'size': f.movie_file.size}
    return render_to_json_response(response)

def find_files(request):
    response = {}
    query = _parse_query(request)
    response['files'] = {}
    qs = models.UserFile.filter(user=request.user).filter(movie_file__movie__id__in=query['q'])
    p = Paginator(qs, 1000)
    for i in p.page_range:
        page = p.page(i)
        for f in page.object_list:
              response['files'][f.movie_file.oshash] = {'path': f.path, 'size': f.movie_file.size}
    return render_to_json_response(response)


def apidoc(request):
    '''
        this is used for online documentation at http://127.0.0.1:8000/api/
    '''
    import sys
    def trim(docstring):
        if not docstring:
            return ''
        # Convert tabs to spaces (following the normal Python rules)
        # and split into a list of lines:
        lines = docstring.expandtabs().splitlines()
        # Determine minimum indentation (first line doesn't count):
        indent = sys.maxint
        for line in lines[1:]:
            stripped = line.lstrip()
            if stripped:
                indent = min(indent, len(line) - len(stripped))
        # Remove indentation (first line is special):
        trimmed = [lines[0].strip()]
        if indent < sys.maxint:
            for line in lines[1:]:
                trimmed.append(line[indent:].rstrip())
        # Strip off trailing and leading blank lines:
        while trimmed and not trimmed[-1]:
            trimmed.pop()
        while trimmed and not trimmed[0]:
            trimmed.pop(0)
        # Return a single string:
        return '\n'.join(trimmed)

    functions = filter(lambda x: x.startswith('api_'), globals().keys())
    api = []
    for f in sorted(functions):
        api.append({
            'name': f[4:],
            'doc': trim(globals()[f].__doc__).replace('\n', '<br>\n')
        })
    context = RequestContext(request, {'api': api,
                                       'sitename': settings.SITENAME,})
    return render_to_response('api.html', context)