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ADS System
[edumed.git] / catalogue / models.py
diff --git a/catalogue/models.py b/catalogue/models.py
index 8ff6be4..ee07651 100644 (file)
--- a/catalogue/models.py
+++ b/catalogue/models.py
@@ -1,92 +1,318 @@
+# -*- coding: utf-8
 from django.core.files import File
 from django.core.files import File
+from django.core.urlresolvers import reverse
 from django.db import models
 from django.db import models
-from curriculum.models import Level
+from jsonfield import JSONField
+from fnpdjango.storage import BofhFileSystemStorage
+from curriculum.models import Level, Curriculum, CurriculumCourse
+import logging
+
+bofh_storage = BofhFileSystemStorage()
+
 
 class Section(models.Model):
     title = models.CharField(max_length=255, unique=True)
 
 class Section(models.Model):
     title = models.CharField(max_length=255, unique=True)
-    slug = models.SlugField(unique=True)
+    slug = models.SlugField(max_length=255, unique=True)
     order = models.IntegerField()
     order = models.IntegerField()
+    xml_file = models.FileField(
+        upload_to="catalogue/section/xml",
+        null=True, blank=True, max_length=255,
+        storage=bofh_storage)
+    image = models.ImageField(upload_to="catalogue/section/image", null=True, blank=True)
+
+    pic = models.ImageField(upload_to="catalogue/section/pic", null=True, blank=True)
+    pic_attribution = models.CharField(max_length=255, null=True, blank=True)
+    pic_src = models.URLField(null=True, blank=True)
+    
+    summary = models.TextField(blank=True, null=True)
 
     class Meta:
         ordering = ['order']
 
 
     class Meta:
         ordering = ['order']
 
+    class IncompleteError(BaseException):
+        pass
+
     def __unicode__(self):
         return self.title
 
     def __unicode__(self):
         return self.title
 
+    def get_absolute_url(self):
+        return "%s#gimnazjum_%s" % (reverse("catalogue_lessons"), self.slug)
+
+    @classmethod
+    def publish(cls, infile, ignore_incomplete=False):
+        from librarian.parser import WLDocument
+        from django.core.files.base import ContentFile
+        xml = infile.get_string()
+        wldoc = WLDocument.from_string(xml)
+
+        lessons = []
+        for part in wldoc.book_info.parts:
+            try:
+                lessons.append(Lesson.objects.get(slug=part.slug))
+            except Lesson.DoesNotExist, e:
+                if not ignore_incomplete:
+                    raise cls.IncompleteError(part.slug)
+
+        slug = wldoc.book_info.url.slug
+        try:
+            section = cls.objects.get(slug=slug)
+        except cls.DoesNotExist:
+            section = cls(slug=slug, order=0)
+
+        # Save XML file
+        section.xml_file.save('%s.xml' % slug, ContentFile(xml), save=False)
+        section.title = wldoc.book_info.title
+        section.save()
+
+        section.lesson_set.all().update(section=None)
+        for i, lesson in enumerate(lessons):
+            lesson.section = section
+            lesson.order = i
+            lesson.save()
+
+        return section
+
+    def syntetic_lesson(self, level):
+        try:
+            return self.lesson_set.filter(type='synthetic', level=level)[0]
+        except IndexError:
+            return None
+
+
 class Lesson(models.Model):
 class Lesson(models.Model):
-    section = models.ForeignKey(Section)
+    section = models.ForeignKey(Section, null=True, blank=True)
     level = models.ForeignKey(Level)
     title = models.CharField(max_length=255)
     level = models.ForeignKey(Level)
     title = models.CharField(max_length=255)
-    slug = models.SlugField(unique=True)
-    depth = models.IntegerField()
-    order = models.IntegerField()
+    slug = models.SlugField(max_length=255, unique=True)
+    type = models.CharField(max_length=15, db_index=True)
+    order = models.IntegerField(db_index=True)
+    dc = JSONField(default='{}')
+    curriculum_courses = models.ManyToManyField(CurriculumCourse, blank=True)
+    description = models.TextField(null=True, blank=True)
 
 
-    xml_file = models.FileField(upload_to="catalogue/lesson/xml",
-        null=True, blank=True) # FIXME: slug in paths
-    html_file = models.FileField(upload_to="catalogue/lesson/html",
-        null=True, blank=True)
-    package = models.FileField(upload_to="catalogue/lesson/pack",
-        null=True, blank=True)
-    student_package = models.FileField(upload_to="catalogue/lesson/student_pack",
-        null=True, blank=True)
-    pdf = models.FileField(upload_to="catalogue/lesson/pdf",
-        null=True, blank=True)
-    student_pdf = models.FileField(upload_to="catalogue/lesson/student_pdf",
-        null=True, blank=True)
+    xml_file = models.FileField(
+        upload_to="catalogue/lesson/xml",
+        null=True, blank=True, max_length=255, storage=bofh_storage)
+    html_file = models.FileField(
+        upload_to="catalogue/lesson/html",
+        null=True, blank=True, max_length=255, storage=bofh_storage)
+    package = models.FileField(
+        upload_to="catalogue/lesson/pack",
+        null=True, blank=True, max_length=255, storage=bofh_storage)
+    student_package = models.FileField(
+        upload_to="catalogue/lesson/student_pack",
+        null=True, blank=True, max_length=255, storage=bofh_storage)
+    pdf = models.FileField(
+        upload_to="catalogue/lesson/pdf",
+        null=True, blank=True, max_length=255, storage=bofh_storage)
+    student_pdf = models.FileField(
+        upload_to="catalogue/lesson/student_pdf",
+        null=True, blank=True, max_length=255, storage=bofh_storage)
 
     class Meta:
 
     class Meta:
-        ordering = ['section', 'level', 'depth', 'order']
+        ordering = ['section', 'level', 'order']
 
     def __unicode__(self):
         return self.title
 
     @models.permalink
     def get_absolute_url(self):
 
     def __unicode__(self):
         return self.title
 
     @models.permalink
     def get_absolute_url(self):
-        return ('catalogue_lesson', [self.slug])
+        return 'catalogue_lesson', [self.slug]
 
     @classmethod
 
     @classmethod
-    def publish(cls, infile):
+    def publish(cls, infile, ignore_incomplete=False):
         from librarian.parser import WLDocument
         from django.core.files.base import ContentFile
         from librarian.parser import WLDocument
         from django.core.files.base import ContentFile
-        # infile should be IOFile, now it's a regular file
-        xml = infile.read()
+        xml = infile.get_string()
         wldoc = WLDocument.from_string(xml)
         wldoc = WLDocument.from_string(xml)
-        slug = wldoc.book_info.url.slug
 
 
+        # Check if not section metadata block.
+        if wldoc.book_info.parts:
+            return Section.publish(infile, ignore_incomplete=ignore_incomplete)
+
+        slug = wldoc.book_info.url.slug
         try:
             lesson = cls.objects.get(slug=slug)
         try:
             lesson = cls.objects.get(slug=slug)
+            lesson.attachment_set.all().delete()
         except cls.DoesNotExist:
         except cls.DoesNotExist:
-            lesson = cls(slug=slug)
+            lesson = cls(slug=slug, order=0)
 
         # Save XML file
         lesson.xml_file.save('%s.xml' % slug, ContentFile(xml), save=False)
         lesson.title = wldoc.book_info.title
 
         # Save XML file
         lesson.xml_file.save('%s.xml' % slug, ContentFile(xml), save=False)
         lesson.title = wldoc.book_info.title
-        #book.extra_info = wldoc.book_info.to_dict()
-
-        # FIXME: 
-        #lesson.level = Level.objects.get(slug=wldoc.book_info.audience)
-        lesson.level = Level.objects.get(name=wldoc.book_info.audience)
-        # TODO: no xml data?
-        lesson.section = Section.objects.all()[0]
-        lesson.order = 1
-        lesson.depth = 1
-
-        # Build HTML.
-        html = wldoc.as_html()
-        lesson.html_file.save("%s.html" % slug,
-            File(open(html.get_filename())), save=False)
-        lesson.save()
+
+        lesson.level = Level.objects.get(meta_name=wldoc.book_info.audience)
+        lesson.populate_dc()
+        lesson.populate_description(wldoc=wldoc)
+        lesson.build_html(infile=infile)
+        lesson.build_pdf()
+        lesson.build_package()
+        if lesson.type != 'project':
+            lesson.build_pdf(student=True)
+            lesson.build_package(student=True)
         return lesson
 
         return lesson
 
+    def populate_dc(self):
+        from librarian.parser import WLDocument
+        wldoc = WLDocument.from_file(self.xml_file.path)
+        self.dc = wldoc.book_info.to_dict()
+        self.type = self.dc["type"]
+        assert self.type in ('appendix', 'course', 'synthetic', 'project', 'added', 'added-var'), \
+            u"Unknown lesson type: %s" % self.type
+        self.save()
+
+        courses = set()
+        for identifier in wldoc.book_info.curriculum:
+            identifier = (identifier or "").replace(' ', '')
+            if not identifier:
+                continue
+            try:
+                curr = Curriculum.objects.get(identifier__iexact=identifier)
+            except Curriculum.DoesNotExist:
+                logging.warn('Unknown curriculum course %s in lesson %s' % (identifier, self.slug))
+                pass
+            else:
+                courses.add(curr.course)
+        self.curriculum_courses = courses
+
+    def populate_description(self, wldoc=None, infile=None):
+        if wldoc is None:
+            wldoc = self.wldocument(infile)
+        if self.type == 'project':
+            lookup = u'Zadanie'
+        else:
+            lookup = u'Pomysł na lekcję'
+        for header in wldoc.edoc.findall('.//naglowek_rozdzial'):
+            if (header.text or '').strip() == lookup:
+                from lxml import etree
+                self.description = etree.tostring(
+                    header.getnext(), method='text', encoding='unicode').strip()
+                self.save()
+                return
+
+    def wldocument(self, infile=None):
+        from librarian import IOFile
+        from librarian.parser import WLDocument
+        from .publish import OrmDocProvider
+
+        if infile is None:
+            infile = IOFile.from_filename(self.xml_file.path)
+            for att in self.attachment_set.all():
+                infile.attachments["%s.%s" % (att.slug, att.ext)] = \
+                    IOFile.from_filename(att.file.path)
+        return WLDocument(infile, provider=OrmDocProvider())
+
+    def build_html(self, infile=None):
+        from .publish import HtmlFormat
+        wldoc = self.wldocument(infile)
+        html = HtmlFormat(wldoc).build()
+        self.html_file.save("%s.html" % self.slug, File(open(html.get_filename())))
+
+    def build_pdf(self, student=False):
+        from .publish import PdfFormat
+        # PDF uses document with attachments already saved as media,
+        # otherwise sorl.thumbnail complains about SuspiciousOperations.
+        wldoc = self.wldocument()
+        if student:
+            pdf = PdfFormat(wldoc).build()
+            self.student_pdf.save("%s.pdf" % self.slug, File(open(pdf.get_filename())))
+        else:
+            pdf = PdfFormat(wldoc, teacher=True).build()
+            self.pdf.save("%s.pdf" % self.slug, File(open(pdf.get_filename())))
+
+    def add_to_zip(self, zipf, student=False, prefix=''):
+        pdf = self.student_pdf if student else self.pdf
+        if pdf:
+            zipf.write(pdf.path, "%s%s%s.pdf" % (prefix, self.slug, "_student" if student else ""))
+            for attachment in self.attachment_set.all():
+                zipf.write(attachment.file.path, u"%smaterialy/%s.%s" % (prefix, attachment.slug, attachment.ext))
+            zipf.write(self.xml_file.path, "%spliki-zrodlowe/%s.xml" % (prefix, self.slug))
+
+    def build_package(self, student=False):
+        from StringIO import StringIO
+        import zipfile
+        from django.core.files.base import ContentFile
+        buff = StringIO()
+        zipf = zipfile.ZipFile(buff, 'w', zipfile.ZIP_STORED)
+        self.add_to_zip(zipf, student)
+        zipf.close()
+        fieldname = "student_package" if student else "package"
+        getattr(self, fieldname).save(
+            "%s%s.zip" % (self.slug, "_student" if student else ""),
+            ContentFile(buff.getvalue()))
+
+    def get_syntetic(self):
+        if self.section is None:
+            return None
+        return self.section.syntetic_lesson(self.level)
+
+    def get_other_level(self):
+        if self.section is None:
+            return None
+        other_levels = self.section.lesson_set.exclude(level=self.level)
+        if other_levels.exists():
+            return other_levels[0].level
+
+    def get_previous(self):
+        if self.section is None:
+            return None
+        try:
+            return self.section.lesson_set.filter(
+                type=self.type, level=self.level,
+                order__lt=self.order).order_by('-order')[0]
+        except IndexError:
+            return None
+
+    def get_next(self):
+        if self.section is None:
+            return None
+        try:
+            return self.section.lesson_set.filter(
+                type=self.type, level=self.level,
+                order__gt=self.order).order_by('order')[0]
+        except IndexError:
+            return None
+
+    def requires_internet(self):
+        return 'internet' in self.dc.get('requires', [])
+
 
 class Attachment(models.Model):
 
 class Attachment(models.Model):
+    slug = models.CharField(max_length=255)
+    ext = models.CharField(max_length=15)
     lesson = models.ForeignKey(Lesson)
     lesson = models.ForeignKey(Lesson)
-    file = models.FileField(upload_to="catalogue/attachment")
+    file = models.FileField(upload_to="catalogue/attachment", storage=bofh_storage)
+
+    class Meta:
+        ordering = ['slug', 'ext']
+        unique_together = ['lesson', 'slug', 'ext']
+
+    def __unicode__(self):
+        return "%s.%s" % (self.slug, self.ext)
 
 
 class Part(models.Model):
     lesson = models.ForeignKey(Lesson)
 
 
 class Part(models.Model):
     lesson = models.ForeignKey(Lesson)
-    pdf = models.FileField(upload_to="catalogue/part/pdf",
-        null=True, blank=True)
-    student_pdf = models.FileField(upload_to="catalogue/part/student_pdf",
-        null=True, blank=True)
+    pdf = models.FileField(upload_to="catalogue/part/pdf", null=True, blank=True)
+    student_pdf = models.FileField(upload_to="catalogue/part/student_pdf", null=True, blank=True)
+
+
+class LessonStub(models.Model):
+    section = models.ForeignKey(Section, null=True, blank=True)
+    level = models.ForeignKey(Level)
+    title = models.CharField(max_length=255)
+    type = models.CharField(max_length=15, db_index=True)
+    order = models.IntegerField(db_index=True)
+
+    class Meta:
+        ordering = ['section', 'level', 'order']
+
+    def __unicode__(self):
+        return self.title
+
+    @property
+    def slug(self):
+        return ''
+
+    def add_to_zip(self, *args, **kwargs):
+        pass