implement /packages/{name} as its own route

A few things added with this commit:

- aurweb.packages.util
    - A module providing package and pkgbase helpers.
- aurweb.template.register_filter
    - A decorator that can be used to register a filter:
      @register_filter("some_filter") def f(): pass

Additionally, template partials have been split off a bit
differently. Changes:

- /packages/{name} is defined in packages/show.html.
- partials/packages/package_actions.html is now
  partials/packages/actions.html.
- partials/packages/details.html has been added.
- partials/packages/comments.html has been added.
- partials/packages/comment.html has been added.
- models.dependency_type additions: name and id constants.
- models.relation_type additions: name and id constants.
- models.official_provider additions: base official url constant.

Signed-off-by: Kevin Morris <kevr@0cost.org>

aurweb/models/dependency_type.py

@@ -1,7 +1,13 @@
 from sqlalchemy import Column, Integer
 
+from aurweb import db
 from aurweb.models.declarative import Base
 
+DEPENDS = "depends"
+MAKEDEPENDS = "makedepends"
+CHECKDEPENDS = "checkdepends"
+OPTDEPENDS = "optdepends"
+
 
 class DependencyType(Base):
     __tablename__ = "DependencyTypes"
@@ -12,3 +18,13 @@ class DependencyType(Base):
 
     def __init__(self, Name: str = None):
         self.Name = Name
+
+
+DEPENDS_ID = db.query(DependencyType).filter(
+    DependencyType.Name == DEPENDS).first().ID
+MAKEDEPENDS_ID = db.query(DependencyType).filter(
+    DependencyType.Name == MAKEDEPENDS).first().ID
+CHECKDEPENDS_ID = db.query(DependencyType).filter(
+    DependencyType.Name == CHECKDEPENDS).first().ID
+OPTDEPENDS_ID = db.query(DependencyType).filter(
+    DependencyType.Name == OPTDEPENDS).first().ID

aurweb/models/official_provider.py

@@ -3,6 +3,8 @@ from sqlalchemy.exc import IntegrityError
 
 from aurweb.models.declarative import Base
 
+OFFICIAL_BASE = "https://aur.archlinux.org"
+
 
 class OfficialProvider(Base):
     __tablename__ = "OfficialProviders"

aurweb/models/package_dependency.py

@@ -61,3 +61,12 @@ class PackageDependency(Base):
         self.DepDesc = DepDesc
         self.DepCondition = DepCondition
         self.DepArch = DepArch
+
+    def is_package(self) -> bool:
+        from aurweb import db
+        from aurweb.models.official_provider import OfficialProvider
+        from aurweb.models.package import Package
+        pkg = db.query(Package, Package.Name == self.DepName)
+        official = db.query(OfficialProvider,
+                            OfficialProvider.Name == self.DepName)
+        return pkg.count() > 0 or official.count() > 0

aurweb/models/relation_type.py

@@ -1,7 +1,12 @@
 from sqlalchemy import Column, Integer
 
+from aurweb import db
 from aurweb.models.declarative import Base
 
+CONFLICTS = "conflicts"
+PROVIDES = "provides"
+REPLACES = "replaces"
+
 
 class RelationType(Base):
     __tablename__ = "RelationTypes"
@@ -12,3 +17,11 @@ class RelationType(Base):
 
     def __init__(self, Name: str = None):
         self.Name = Name
+
+
+CONFLICTS_ID = db.query(RelationType).filter(
+    RelationType.Name == CONFLICTS).first().ID
+PROVIDES_ID = db.query(RelationType).filter(
+    RelationType.Name == PROVIDES).first().ID
+REPLACES_ID = db.query(RelationType).filter(
+    RelationType.Name == REPLACES).first().ID