Use internal JSON.

[redakcja.git] / apps / explorer / views.py

diff --git a/apps/explorer/views.py b/apps/explorer/views.py
index acbcd19..18f79b3 100644 (file)
--- a/apps/explorer/views.py
+++ b/apps/explorer/views.py
@@ -1,65 +1,442 @@
-from librarian import html
-import hg, urllib2, json
+# -*- coding: utf-8 -*-
+import urllib2
+import hg
+from librarian import html, parser, dcparser, ParseError, ValidationError

 
 

-from django.views.generic.simple import direct_to_template

 from django.conf import settings
 from django.conf import settings

-from django.http import HttpResponseRedirect
+from django.contrib.auth.decorators import login_required, permission_required
+
+from django.core.urlresolvers import reverse
+from django.http import HttpResponseRedirect, HttpResponse
+from django.utils import simplejson as json
+from django.views.generic.simple import direct_to_template

 
 from explorer import forms, models
 
 from explorer import forms, models

+from toolbar import models as toolbar_models
+
+#
+# Some useful decorators
+
+def file_branch(path, user=None):
+    return ('personal_'+user.username + '_' if user is not None else '') \
+        + 'file_' + path

 
 

-repo = hg.Repository(settings.REPOSITORY_PATH)
+def with_repo(view):
+    """Open a repository for this view"""
+    def view_with_repo(request, *args, **kwargs):          
+        kwargs['repo'] = hg.Repository(settings.REPOSITORY_PATH)
+        return view(request, *args, **kwargs)
+    return view_with_repo
+
+#
+def ajax_login_required(view):
+    """Similar ro @login_required, but instead of redirect, 
+    just return some JSON stuff with error."""
+    def view_with_auth(request, *args, **kwargs):
+        if request.user.is_authenticated():
+            return view(request, *args, **kwargs)
+        # not authenticated
+        return HttpResponse( json.dumps({'result': 'access_denied', 'errors': ['Brak dostępu.']}) );
+    return view_with_auth
+
+#
+# View all files
+#
+@with_repo
+def file_list(request, repo):
+    #
+    latest_default = repo.get_branch_tip('default')
+    files = [ f for f in repo.repo[latest_default] if not f.startswith('.')]
+    bookform = forms.BookUploadForm()

 
 

-def file_list(request):

     return direct_to_template(request, 'explorer/file_list.html', extra_context={
     return direct_to_template(request, 'explorer/file_list.html', extra_context={

-        'objects': repo.all_files(),
+        'files': files, 'bookform': bookform,

     })
 
     })
 

+@permission_required('explorer.can_add_files')
+@with_repo
+def file_upload(request, repo):
+    other_errors = []
+    if request.method == 'POST':
+        form = forms.BookUploadForm(request.POST, request.FILES)
+        if form.is_valid():
+            try:
+                # prepare the data
+                f = request.FILES['file']
+                decoded = f.read().decode('utf-8')
+                path = form.cleaned_data['bookname']
+                
+                def upload_action():
+                    repo._add_file(path ,decoded.encode('utf-8') )
+                    repo._commit(message="File %s uploaded by user %s" % \
+                        (path, request.user.username), user=request.user.username)

 
 

-def file_xml(request, path):
+                repo.in_branch(upload_action, 'default')
+
+                # if everything is ok, redirect to the editor
+                return HttpResponseRedirect( reverse('editor_view',
+                        kwargs={'path': path}) )
+
+            except hg.RepositoryException, e:
+                other_errors.append(u'Błąd repozytorium: ' + unicode(e) )
+            #except UnicodeDecodeError, e:
+            #    other_errors.append(u'Niepoprawne kodowanie pliku: ' + e.reason \
+            #     + u'. Żądane kodowanie: ' + e.encoding)
+        # invalid form
+
+    # get
+    form = forms.BookUploadForm()
+    return direct_to_template(request, 'explorer/file_upload.html',\
+        extra_context = {'form' : form, 'other_errors': other_errors})
+   
+#
+# Edit the file
+#
+
+@ajax_login_required
+@with_repo
+def file_xml(request, repo, path):

     if request.method == 'POST':
     if request.method == 'POST':

+        errors = None
+        warnings = None

         form = forms.BookForm(request.POST)
         if form.is_valid():
         form = forms.BookForm(request.POST)
         if form.is_valid():

-            repo.add_file(path, form.cleaned_data['text'])
-            # issues = _get_issues_for_file(path)
-            # commit_message = _add_references(form.cleaned_data['commit_message'], issued)
-            repo.commit(message=form.cleaned_data['commit_message'], user=form.cleaned_data['user'])
-            return HttpResponseRedirect(request.get_full_path())
-    else:
-        form = forms.BookForm()
-        form.fields['text'].initial = repo.get_file(path).data()
+            print 'Saving whole text.', request.user.username
+            try:
+                # encode it back to UTF-8, so we can put it into repo
+                encoded_data = form.cleaned_data['content'].encode('utf-8')
+
+                def save_action():                    
+                    repo._add_file(path, encoded_data)
+                    repo._commit(message=(form.cleaned_data['commit_message'] or 'Lokalny zapis platformy.'),\
+                         user=request.user.username)
+
+                try:
+                    # wczytaj dokument z ciągu znaków -> weryfikacja
+                    document = parser.WLDocument.from_string(form.cleaned_data['content'])
+                except (ParseError, ValidationError), e:
+                    warnings = [u'Niepoprawny dokument XML: ' + unicode(e.message)]
+
+                #  save to user's branch
+                repo.in_branch(save_action, file_branch(path, request.user) );
+            except UnicodeDecodeError, e:
+                errors = [u'Błąd kodowania danych przed zapisem: ' + unicode(e.message)]
+            except hg.RepositoryException, e:
+                errors = [u'Błąd repozytorium: ' + unicode(e.message)]            
+
+        if not errors:
+            errors = dict( (field[0], field[1].as_text()) for field in form.errors.iteritems() )
+
+        return HttpResponse( json.dumps({'result': errors and 'error' or 'ok',
+            'errors': errors, 'warnings': warnings}) );
+
+    form = forms.BookForm()
+    data = repo.get_file(path, file_branch(path, request.user))
+    form.fields['content'].initial = data
+    return HttpResponse( json.dumps({'result': 'ok', 'content': data}) )
+
+@ajax_login_required
+@with_repo
+def file_update_local(request, path, repo):
+    result = None
+    errors = None

     
     

-    return direct_to_template(request, 'explorer/file_xml.html', extra_context={
-        'hash': path,
-        'form': form,
-        'image_folders_form': forms.ImageFoldersForm(),
-    })
+    wlock = repo.write_lock()
+    try:
+        tipA = repo.get_branch_tip('default')
+        tipB = repo.get_branch_tip( file_branch(path, request.user) )
+
+        nodeA = repo.getnode(tipA)
+        nodeB = repo.getnode(tipB)
+        
+        # do some wild checks - see file_commit() for more info
+        if (repo.common_ancestor(tipA, tipB) == nodeA) \
+        or (nodeB in nodeA.parents()):
+            result = 'nothing-to-do'
+        else:
+            # Case 2+
+            repo.merge_revisions(tipB, tipA, \
+                request.user.username, 'Personal branch update.')
+            result = 'done'
+    except hg.UncleanMerge, e:
+        errors = [e.message]
+        result = 'fatal-error'
+    except hg.RepositoryException, e:
+        errors = [e.message]
+        result = 'fatal-error'
+    finally:
+        wlock.release()
+
+    if result is None:
+        raise Exception("Ouch, this shouldn't happen!")
+    
+    return HttpResponse( json.dumps({'result': result, 'errors': errors}) );
+
+@ajax_login_required
+@with_repo
+def file_commit(request, path, repo):
+    result = None
+    errors = None
+    local_modified = False
+    if request.method == 'POST':
+        form = forms.MergeForm(request.POST)
+
+        if form.is_valid():           
+            wlock = repo.write_lock()
+            try:
+                tipA = repo.get_branch_tip('default')
+                tipB = repo.get_branch_tip( file_branch(path, request.user) )
+
+                nodeA = repo.getnode(tipA)
+                nodeB = repo.getnode(tipB)
+
+                print repr(nodeA), repr(nodeB), repo.common_ancestor(tipA, tipB), repo.common_ancestor(tipB, tipA)
+
+                if repo.common_ancestor(tipB, tipA) == nodeA:
+                    # Case 1:
+                    #         * tipB
+                    #         |
+                    #         * <- can also be here!
+                    #        /|
+                    #       / |
+                    # tipA *  *
+                    #      |  |
+                    # The local branch has been recently updated,
+                    # so we don't need to update yet again, but we need to
+                    # merge down to default branch, even if there was
+                    # no commit's since last update
+                    repo.merge_revisions(tipA, tipB, \
+                        request.user.username, form.cleaned_data['message'])
+                    result = 'done'
+                elif any( p.branch()==nodeB.branch() for p in nodeA.parents()):
+                    # Case 2:
+                    #
+                    # tipA *  * tipB
+                    #      |\ |
+                    #      | \|
+                    #      |  * 
+                    #      |  |
+                    # Default has no changes, to update from this branch
+                    # since the last merge of local to default.
+                    if nodeB not in nodeA.parents():
+                        repo.merge_revisions(tipA, tipB, \
+                            request.user.username, form.cleaned_data['message'])
+                        result = 'done'
+                    else:
+                        result = 'nothing-to-do'
+                elif repo.common_ancestor(tipA, tipB) == nodeB:
+                    # Case 3:
+                    # tipA * 
+                    #      |
+                    #      * <- this case overlaps with previos one
+                    #      |\
+                    #      | \
+                    #      |  * tipB
+                    #      |  |
+                    #
+                    # There was a recent merge to the defaul branch and
+                    # no changes to local branch recently.
+                    # 
+                    # Use the fact, that user is prepared to see changes, to
+                    # update his branch if there are any
+                    if nodeB not in nodeA.parents():
+                        repo.merge_revisions(tipB, tipA, \
+                            request.user.username, 'Personal branch update during merge.')
+                        local_modified = True
+                        result = 'done'
+                    else:
+                        result = 'nothing-to-do'
+                else:
+                    # both branches have changes made to them, so
+                    # first do an update
+                    repo.merge_revisions(tipB, tipA, \
+                        request.user.username, 'Personal branch update during merge.')
+
+                    local_modified = True
+
+                    # fetch the new tip
+                    tipB = repo.get_branch_tip( file_branch(path, request.user) )

 
 

+                    # and merge back to the default
+                    repo.merge_revisions(tipA, tipB, \
+                        request.user.username, form.cleaned_data['message'])
+                    result = 'done'
+            except hg.UncleanMerge, e:
+                errors = [e.message]
+                result = 'fatal-error'
+            except hg.RepositoryException, e:
+                errors = [e.message]
+                result = 'fatal-error'
+            finally:
+                wlock.release()
+                
+        if result is None:
+            errors = [ form.errors['message'].as_text() ]
+            if len(errors) > 0:
+                result = 'fatal-error'

 
 

-def file_html(request, path):
-    return direct_to_template(request, 'explorer/file_html.html', extra_context={
-        'object': html.transform(repo.get_file(path).data(), is_file=False),
-        'hash': path,
-        'image_folders_form': forms.ImageFoldersForm(),
+        return HttpResponse( json.dumps({'result': result, 'errors': errors, 'localmodified': local_modified}) );
+
+    return HttpResponse( json.dumps({'result': 'fatal-error', 'errors': ['No data posted']}) )
+    
+
+@ajax_login_required
+@with_repo
+def file_dc(request, path, repo):
+    errors = None
+
+    if request.method == 'POST':
+        form = forms.DublinCoreForm(request.POST)
+        
+        if form.is_valid():
+            
+            def save_action():
+                file_contents = repo._get_file(path)
+
+                # wczytaj dokument z repozytorium
+                document = parser.WLDocument.from_string(file_contents)                    
+                document.book_info.update(form.cleaned_data)             
+
+                # zapisz
+                repo._write_file(path, document.serialize().encode('utf-8'))
+                repo._commit( \
+                    message=(form.cleaned_data['commit_message'] or 'Lokalny zapis platformy.'), \
+                    user=request.user.username )
+                
+            try:
+                repo.in_branch(save_action, file_branch(path, request.user) )
+            except UnicodeEncodeError, e:
+                errors = ['Bład wewnętrzny: nie można zakodować pliku do utf-8']
+            except (ParseError, ValidationError), e:
+                errors = [e.message]
+
+        if errors is None:
+            errors = ["Pole '%s': %s\n" % (field[0], field[1].as_text()) for field in form.errors.iteritems()]
+
+        return HttpResponse( json.dumps({'result': errors and 'error' or 'ok', 'errors': errors}) );
+    
+    # this is unused currently, but may come in handy 
+    content = []
+    
+    try:
+        fulltext = repo.get_file(path, file_branch(path, request.user))
+        bookinfo = dcparser.BookInfo.from_string(fulltext)
+        content = bookinfo.to_dict()
+    except (ParseError, ValidationError), e:
+        errors = [e.message]
+
+    return HttpResponse( json.dumps({'result': errors and 'error' or 'ok', 
+        'errors': errors, 'content': content }) ) 
+
+# Display the main editor view
+
+@login_required
+@with_repo
+def display_editor(request, path, repo):    
+
+    # this is the only entry point where we create an autobranch for the user
+    # if it doesn't exists. All other views SHOULD fail.
+    def ensure_branch_exists():
+        parent = repo.get_branch_tip('default')
+        repo._create_branch(file_branch(path, request.user), parent)
+        
+    try:
+        repo.with_wlock(ensure_branch_exists)
+        
+        return direct_to_template(request, 'explorer/editor.html', extra_context={
+            'hash': path,
+            'panel_list': ['lewy', 'prawy'],
+            'scriptlets': toolbar_models.Scriptlet.objects.all()
+        })
+    except KeyError:
+        return direct_to_template(request, 'explorer/nofile.html', \
+            extra_context = { 'path': path })
+
+# ===============
+# = Panel views =
+# ===============
+
+@ajax_login_required
+@with_repo
+def xmleditor_panel(request, path, repo):
+    text = repo.get_file(path, file_branch(path, request.user))
+    
+    return direct_to_template(request, 'explorer/panels/xmleditor.html', extra_context={
+        'fpath': path,
+        'text': text,

     })
     })

-  
+    
+
+@ajax_login_required
+def gallery_panel(request, path):
+    return direct_to_template(request, 'explorer/panels/gallery.html', extra_context={
+        'fpath': path,
+        'form': forms.ImageFoldersForm(),
+    })
+
+@ajax_login_required
+@with_repo
+def htmleditor_panel(request, path, repo):
+    user_branch = file_branch(path, request.user)
+    try:
+        return direct_to_template(request, 'explorer/panels/htmleditor.html', extra_context={
+            'fpath': path,
+            'html': html.transform(repo.get_file(path, user_branch), is_file=False),
+        })
+    except (ParseError, ValidationError), e:
+        return direct_to_template(request, 'explorer/panels/parse_error.html', extra_context={
+            'fpath': path, 'exception_type': type(e).__name__, 'exception': e, 'panel_name': 'Edytor HTML'}) 
+
+@ajax_login_required
+@with_repo
+def dceditor_panel(request, path, repo):
+    user_branch = file_branch(path, request.user)
+
+    try:
+        doc_text = repo.get_file(path, user_branch)
+        document = parser.WLDocument.from_string(doc_text)
+        form = forms.DublinCoreForm(info=document.book_info)       
+        return direct_to_template(request, 'explorer/panels/dceditor.html', extra_context={
+            'fpath': path,
+            'form': form,
+        })
+    except (ParseError, ValidationError), e:
+        return direct_to_template(request, 'explorer/panels/parse_error.html', extra_context={
+            'fpath': path, 'exception_type': type(e).__name__, 'exception': e, 
+            'panel_name': 'Edytor DublinCore'}) 
+
+# =================
+# = Utility views =
+# =================
+@ajax_login_required

 def folder_images(request, folder):
     return direct_to_template(request, 'explorer/folder_images.html', extra_context={
         'images': models.get_images_from_folder(folder),
     })
 
 def folder_images(request, folder):
     return direct_to_template(request, 'explorer/folder_images.html', extra_context={
         'images': models.get_images_from_folder(folder),
     })
 

+

 def _add_references(message, issues):
 def _add_references(message, issues):

-    for issue in issues:
-        message += " refs #%d " % issue.id
-    return message
+    return message + " - " + ", ".join(map(lambda issue: "Refs #%d" % issue['id'], issues))

 
 def _get_issues_for_file(path):
     if not path.endswith('.xml'):
         raise ValueError('Path must end with .xml')
 
 
 def _get_issues_for_file(path):
     if not path.endswith('.xml'):
         raise ValueError('Path must end with .xml')
 

-    book_id = path[:-3]
-    uf = urllib2.urlopen(settings.REDMINE_URL + 'publications/%s/issues' % book_id)
+    book_id = path[:-4]
+    uf = None

 
     try:
 
     try:

+        uf = urllib2.urlopen(settings.REDMINE_URL + 'publications/issues/%s.json' % book_id)

         return json.loads(uf.read())
         return json.loads(uf.read())

+    except urllib2.HTTPError:
+        return []

     finally:
     finally:

-        uf.close()
+        if uf: uf.close()
+
+
+# =================
+# = Pull requests =
+# =================
+def pull_requests(request):
+    return direct_to_template(request, 'manager/pull_request.html', extra_context = {
+        'objects': models.PullRequest.objects.all()} )