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path: root/main/models.py
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from django.db import models
from django.contrib.auth.models import User
from django.contrib.sites.models import Site

from main.utils import cache_function
from packages.models import PackageRelation

class UserProfile(models.Model):
    id = models.AutoField(primary_key=True) # not technically needed
    notify = models.BooleanField(
        "Send notifications",
        default=True,
        help_text="When enabled, send user 'flag out of date' notifications")
    alias = models.CharField(
        max_length=50,
        help_text="Required field")
    public_email = models.CharField(
        max_length=50,
        help_text="Required field")
    other_contact = models.CharField(max_length=100, null=True, blank=True)
    website = models.CharField(max_length=200, null=True, blank=True)
    yob = models.IntegerField("Year of birth", null=True, blank=True)
    location = models.CharField(max_length=50, null=True, blank=True)
    languages = models.CharField(max_length=50, null=True, blank=True)
    interests = models.CharField(max_length=255, null=True, blank=True)
    occupation = models.CharField(max_length=50, null=True, blank=True)
    roles = models.CharField(max_length=255, null=True, blank=True)
    favorite_distros = models.CharField(max_length=255, null=True, blank=True)
    picture = models.FileField(upload_to='devs', default='devs/silhouette.png',
        help_text="Ideally 125px by 125px")
    user = models.OneToOneField(User, related_name='userprofile')
    allowed_repos = models.ManyToManyField('Repo', blank=True)
    class Meta:
        db_table = 'user_profiles'
        verbose_name = 'Additional Profile Data'
        verbose_name_plural = 'Additional Profile Data'


class TodolistManager(models.Manager):
    def incomplete(self):
        return self.filter(todolistpkg__complete=False).distinct()

class PackageManager(models.Manager):
    def flagged(self):
        return self.get_query_set().filter(flag_date__isnull=False)


class Donor(models.Model):
    id = models.AutoField(primary_key=True)
    name = models.CharField(max_length=255, unique=True)
    visible = models.BooleanField(default=True,
            help_text="Should we show this donor on the public page?")

    def __unicode__(self):
        return self.name

    class Meta:
        db_table = 'donors'
        ordering = ['name']

class Arch(models.Model):
    id = models.AutoField(primary_key=True)
    name = models.CharField(max_length=255, unique=True)
    agnostic = models.BooleanField(default=False,
            help_text="Is this architecture non-platform specific?")

    def __unicode__(self):
        return self.name

    class Meta:
        db_table = 'arches'
        ordering = ['name']
        verbose_name_plural = 'arches'

class Repo(models.Model):
    id = models.AutoField(primary_key=True)
    name = models.CharField(max_length=255, unique=True)
    testing = models.BooleanField(default=False,
            help_text="Is this repo meant for package testing?")
    bugs_project = models.SmallIntegerField(default=1,
            help_text="Flyspray project ID for this repository.")
    svn_root = models.CharField(max_length=64,
            help_text="SVN root (e.g. path) for this repository.")

    def __unicode__(self):
        return self.name

    class Meta:
        db_table = 'repos'
        ordering = ['name']
        verbose_name_plural = 'repos'

class Package(models.Model):
    id = models.AutoField(primary_key=True)
    repo = models.ForeignKey(Repo, related_name="packages")
    arch = models.ForeignKey(Arch, related_name="packages")
    pkgname = models.CharField(max_length=255, db_index=True)
    pkgbase = models.CharField(max_length=255, db_index=True)
    pkgver = models.CharField(max_length=255)
    pkgrel = models.CharField(max_length=255)
    pkgdesc = models.CharField(max_length=255, null=True)
    url = models.CharField(max_length=255, null=True)
    filename = models.CharField(max_length=255)
    # TODO: it would be nice to have the >0 check constraint back here
    compressed_size = models.BigIntegerField(null=True)
    installed_size = models.BigIntegerField(null=True)
    build_date = models.DateTimeField(null=True)
    last_update = models.DateTimeField(null=True, blank=True)
    files_last_update = models.DateTimeField(null=True, blank=True)
    license = models.CharField(max_length=255, null=True)
    packager_str = models.CharField(max_length=255)
    packager = models.ForeignKey(User, null=True)
    flag_date = models.DateTimeField(null=True)

    objects = PackageManager()
    class Meta:
        db_table = 'packages'
        ordering = ('pkgname',)
        #get_latest_by = 'last_update'
        #ordering = ('-last_update',)

    def __unicode__(self):
        return self.pkgname

    def get_absolute_url(self):
        return '/packages/%s/%s/%s/' % (self.repo.name.lower(),
                self.arch.name, self.pkgname)

    def get_full_url(self, proto='http'):
        '''get a URL suitable for things like email including the domain'''
        domain = Site.objects.get_current().domain
        return '%s://%s%s' % (proto, domain, self.get_absolute_url())

    @property
    def maintainers(self):
        return User.objects.filter(
                package_relations__pkgbase=self.pkgbase,
                package_relations__type=PackageRelation.MAINTAINER)

    @property
    def signoffs(self):
        if 'signoffs_cache' in dir(self):
            return self.signoffs_cache
        self.signoffs_cache = list(Signoff.objects.filter(
            pkg=self,
            pkgver=self.pkgver,
            pkgrel=self.pkgrel))
        return self.signoffs_cache

    def approved_for_signoff(self):
        return len(self.signoffs) >= 2

    @cache_function(300)
    def get_requiredby(self):
        """
        Returns a list of package objects.
        """
        arches = list(Arch.objects.filter(agnostic=True))
        arches.append(self.arch)
        requiredby = Package.objects.select_related('arch', 'repo').filter(
                packagedepend__depname=self.pkgname,
                arch__in=arches).distinct()
        return requiredby.order_by('pkgname')

    @cache_function(300)
    def get_depends(self):
        """
        Returns a list of dicts. Each dict contains ('pkg' and 'dep').
        If it represents a found package both vars will be available;
        else pkg will be None if it is a 'virtual' dependency.
        """
        deps = []
        arches = list(Arch.objects.filter(agnostic=True))
        arches.append(self.arch)
        # TODO: we can use list comprehension and an 'in' query to make this more effective
        for dep in self.packagedepend_set.order_by('depname'):
            pkgs = Package.objects.select_related('arch', 'repo').filter(
                    pkgname=dep.depname)
            if not self.arch.agnostic:
                # make sure we match architectures if possible
                pkgs = pkgs.filter(arch__in=arches)
            if len(pkgs) == 0:
                # couldn't find a package in the DB
                # it should be a virtual depend (or a removed package)
                pkg = None
            elif len(pkgs) == 1:
                pkg = pkgs[0]
            else:
                # more than one package, see if we can't shrink it down
                # grab the first though in case we fail
                pkg = pkgs[0]
                if self.repo.testing:
                    pkgs = pkgs.filter(repo__testing=True)
                else:
                    pkgs = pkgs.filter(repo__testing=False)
                if len(pkgs) > 0:
                    pkg = pkgs[0]
            deps.append({'dep': dep, 'pkg': pkg})
        return deps

    def base_package(self):
        """
        Locate the base package for this package. It may be this very package,
        or if it was built in a way that the base package isn't real, will
        return None.
        """
        try:
            # start by looking for something in this repo
            return Package.objects.get(arch=self.arch,
                    repo=self.repo, pkgname=self.pkgbase)
        except Package.DoesNotExist:
            # this package might be split across repos? just find one
            # that matches the correct [testing] repo flag
            pkglist = Package.objects.filter(arch=self.arch,
                    repo__testing=self.repo.testing, pkgname=self.pkgbase)
            if len(pkglist) > 0:
                return pkglist[0]
            return None

    def split_packages(self):
        """
        Return all packages that were built with this one (e.g. share a pkgbase
        value). The package this method is called on will never be in the list,
        and we will never return a package that does not have the same
        repo.testing flag. For any non-split packages, the return value will be
        an empty list.
        """
        return Package.objects.filter(arch=self.arch,
                repo__testing=self.repo.testing, pkgbase=self.pkgbase).exclude(id=self.id)

    def get_svn_link(self, svnpath):
        linkbase = "http://repos.archlinux.org/wsvn/%s/%s/%s/"
        return linkbase % (self.repo.svn_root, self.pkgbase, svnpath)

    def get_arch_svn_link(self):
        repo = self.repo.name.lower()
        return self.get_svn_link("repos/%s-%s" % (repo, self.arch.name))

    def get_trunk_svn_link(self):
        return self.get_svn_link("trunk")

    def get_bugs_link(self):
        return "https://bugs.archlinux.org/?project=%d&string=%s" % \
                (self.repo.bugs_project, self.pkgname)

    def is_same_version(self, other):
        'is this package similar, name and version-wise, to another'
        return self.pkgname == other.pkgname \
                and self.pkgver == other.pkgver \
                and self.pkgrel == other.pkgrel

    def in_testing(self):
        '''attempt to locate this package in a testing repo; if we are in
        a testing repo we will always return None.'''
        if self.repo.testing:
            return None
        try:
            return Package.objects.get(repo__testing=True,
                    pkgname=self.pkgname, arch=self.arch)
        except Package.DoesNotExist:
            return None

    def elsewhere(self):
        '''attempt to locate this package anywhere else, regardless of
        architecture or repository. Excludes this package from the list.'''
        return Package.objects.select_related('arch', 'repo').filter(
                pkgname=self.pkgname).exclude(id=self.id).order_by(
                'arch__name', 'repo__name')

class Signoff(models.Model):
    pkg = models.ForeignKey(Package)
    pkgver = models.CharField(max_length=255)
    pkgrel = models.CharField(max_length=255)
    packager = models.ForeignKey(User)

class PackageFile(models.Model):
    id = models.AutoField(primary_key=True)
    pkg = models.ForeignKey('Package')
    path = models.CharField(max_length=255)
    class Meta:
        db_table = 'package_files'

class PackageDepend(models.Model):
    id = models.AutoField(primary_key=True)
    pkg = models.ForeignKey('Package')
    depname = models.CharField(db_index=True, max_length=255)
    depvcmp = models.CharField(max_length=255)
    class Meta:
        db_table = 'package_depends'

class Todolist(models.Model):
    id = models.AutoField(primary_key=True)
    creator = models.ForeignKey(User)
    name = models.CharField(max_length=255)
    description = models.TextField()
    date_added = models.DateField(auto_now_add=True)
    objects = TodolistManager()
    def __unicode__(self):
        return self.name

    @property
    def packages(self):
        # select_related() does not use LEFT OUTER JOIN for nullable ForeignKey
        # fields. That is why we need to explicitly list the ones we want.
        return TodolistPkg.objects.select_related(
            'pkg__repo', 'pkg__arch').filter(list=self).order_by('pkg')

    @property
    def package_names(self):
        # depends on packages property returning a queryset
        return self.packages.values_list('pkg__pkgname', flat=True).distinct()

    class Meta:
        db_table = 'todolists'

    def get_absolute_url(self):
        return '/todo/%i/' % self.id

class TodolistPkg(models.Model):
    id = models.AutoField(primary_key=True)
    list = models.ForeignKey('Todolist')
    pkg = models.ForeignKey('Package')
    complete = models.BooleanField(default=False)
    class Meta:
        db_table = 'todolist_pkgs'
        unique_together = (('list','pkg'),)

# vim: set ts=4 sw=4 et: