X-Git-Url: https://git.mdrn.pl/redakcja.git/blobdiff_plain/4c48c47d0b84e516114c16ee191359166e93a51c..042196842c177084eb717ed6191e1b3d5d3ef82e:/apps/catalogue/helpers.py?ds=inline diff --git a/apps/catalogue/helpers.py b/apps/catalogue/helpers.py index c9dc0bd9..060d106c 100644 --- a/apps/catalogue/helpers.py +++ b/apps/catalogue/helpers.py @@ -1,6 +1,18 @@ +# -*- coding: utf-8 -*- +import filecmp +import json +import re +from datetime import date from functools import wraps +from inspect import getargspec +from os import listdir +from os.path import join +from shutil import move, rmtree -from django.db.models import Count +from django.conf import settings +from django.http import HttpResponse +from django.template import RequestContext +from django.template.loader import render_to_string def active_tab(tab): @@ -16,50 +28,179 @@ def active_tab(tab): return wrapper -class ChunksList(object): - def __init__(self, chunk_qs): - self.chunk_qs = chunk_qs.annotate( - book_length=Count('book__chunk')).select_related( - 'book', 'stage__name', - 'user') - - self.book_qs = chunk_qs.values('book_id') - - def __getitem__(self, key): - if isinstance(key, slice): - return self.get_slice(key) - elif isinstance(key, int): - return self.get_slice(slice(key, key+1))[0] - else: - raise TypeError('Unsupported list index. Must be a slice or an int.') - - def __len__(self): - return self.book_qs.count() - - def get_slice(self, slice_): - book_ids = [x['book_id'] for x in self.book_qs[slice_]] - chunk_qs = self.chunk_qs.filter(book__in=book_ids) - - chunks_list = [] - book = None - for chunk in chunk_qs: - if chunk.book != book: - book = chunk.book - chunks_list.append(ChoiceChunks(book, [chunk], chunk.book_length)) +def cached_in_field(field_name): + def decorator(f): + @property + @wraps(f) + def wrapped(self, *args, **kwargs): + value = getattr(self, field_name) + if value is None: + value = f(self, *args, **kwargs) + type(self)._default_manager.filter(pk=self.pk).update(**{field_name: value}) + return value + return wrapped + return decorator + + +class AjaxError(Exception): + pass + + +def ajax(method, template=None, login_required=False, permission_required=None): + def decorator(fun): + @wraps(fun) + def ajax_view(request): + kwargs = {} + request_params = None + if method == 'post': + request_params = request.POST + elif method == 'get': + request_params = request.GET + fun_params, xx, fun_kwargs, defaults = getargspec(fun) + if defaults: + required_params = fun_params[1:-len(defaults)] + else: + required_params = fun_params[1:] + missing_params = set(required_params) - set(request_params) + if missing_params: + res = { + 'result': 'error', + 'msg': 'missing params: %s' % ', '.join(missing_params), + } else: - chunks_list[-1].chunks.append(chunk) - return chunks_list + if request_params: + request_params = dict( + (key, json.loads(value)) + for key, value in request_params.iteritems() + if fun_kwargs or key in fun_params) + kwargs.update(request_params) + res = None + if login_required and not request.user.is_authenticated(): + res = {'result': 'error', 'msg': 'logout'} + if (permission_required and + not request.user.has_perm(permission_required)): + res = {'result': 'error', 'msg': 'access denied'} + if not res: + try: + res = fun(request, **kwargs) + if res and template: + res = {'html': render_to_string(template, res, RequestContext(request))} + except AjaxError as e: + res = {'result': e.args[0]} + if 'result' not in res: + res['result'] = 'ok' + return HttpResponse(json.dumps(res), content_type='application/json; charset=utf-8') + return ajax_view -class ChoiceChunks(object): - """ - Associates the given chunks iterable for a book. - """ + return decorator + + +def parse_isodate(isodate): + try: + return date(*[int(p) for p in isodate.split('-')]) + except (AttributeError, TypeError, ValueError): + raise ValueError("Not a date in ISO format.") + + +class GalleryMerger(object): + def __init__(self, dest_gallery, src_gallery): + self.dest = dest_gallery + self.src = src_gallery + self.dest_size = None + self.src_size = None + self.num_deleted = 0 + + @staticmethod + def path(gallery): + return join(settings.MEDIA_ROOT, settings.IMAGE_DIR, gallery) + + @staticmethod + def get_prefix(name): + m = re.match(r"^([0-9])-", name) + if m: + return int(m.groups()[0]) + return None + + @staticmethod + def set_prefix(name, prefix, always=False): + m = not always and re.match(r"^([0-9])-", name) + return "%1d-%s" % (prefix, m and name[2:] or name) + + @property + def was_merged(self): + """Check if we have gallery size recorded""" + return self.dest_size is not None + + def merge(self): + if not self.dest: + return self.src + if not self.src: + return self.dest + + files = listdir(self.path(self.dest)) + files.sort() + self.dest_size = len(files) + files_other = listdir(self.path(self.src)) + files_other.sort() + self.src_size = len(files_other) + + if files and files_other: + print "compare %s with %s" % (files[-1], files_other[0]) + if filecmp.cmp( + join(self.path(self.dest), files[-1]), + join(self.path(self.src), files_other[0]), + False + ): + files_other.pop(0) + self.num_deleted = 1 + + prefixes = {} + renamed_files = {} + renamed_files_other = {} + last_pfx = -1 + + # check if all elements of my files have a prefix + files_prefixed = True + for f in files: + p = self.get_prefix(f) + if p: + if p > last_pfx: + last_pfx = p + else: + files_prefixed = False + break + + # if not, add a 0 prefix to them + if not files_prefixed: + prefixes[0] = 0 + for f in files: + renamed_files[f] = self.set_prefix(f, 0, True) + + # two cases here - either all are prefixed or not. + files_other_prefixed = True + for f in files_other: + pfx = self.get_prefix(f) + if pfx is not None: + if pfx not in prefixes: + last_pfx += 1 + prefixes[pfx] = last_pfx + renamed_files_other[f] = self.set_prefix(f, prefixes[pfx]) + else: + # ops, not all files here were prefixed. + files_other_prefixed = False + break - chunks = None + # just set a 1- prefix to all of them + if not files_other_prefixed: + for f in files_other: + renamed_files_other[f] = self.set_prefix(f, 1, True) - def __init__(self, book, chunks, book_length): - self.book = book - self.chunks = chunks - self.book_length = book_length + # finally, move / rename files. + for frm, to in renamed_files.items(): + move(join(self.path(self.dest), frm), join(self.path(self.dest), to)) + for frm, to in renamed_files_other.items(): + move(join(self.path(self.src), frm), join(self.path(self.dest), to)) + rmtree(join(self.path(self.src))) + return self.dest