app/querybuilder.py

   1 from .models import db, PackageType, Package, ForumTopic, License, MinetestRelease, PackageRelease, User, Tag, Tags, ContentWarning
   2 from .utils import isNo, isYes, get_int_or_abort
   3 from sqlalchemy.sql.expression import func
   4 from flask import abort
   5 from sqlalchemy import or_
   6
   7 class QueryBuilder:
   8         title  = None
   9         types  = None
  10         search = None
  11
  12         def __init__(self, args):
  13                 title = "Packages"
  14
  15                 # Get request types
  16                 types = args.getlist("type")
  17                 types = [PackageType.get(tname) for tname in types]
  18                 types = [type for type in types if type is not None]
  19                 if len(types) > 0:
  20                         title = ", ".join([type.value + "s" for type in types])
  21
  22                 # Get tags types
  23                 tags = args.getlist("tag")
  24                 tags = [Tag.query.filter_by(name=tname).first() for tname in tags]
  25                 tags = [tag for tag in tags if tag is not None]
  26
  27                 # Hide
  28                 hide_flags = args.getlist("hide")
  29
  30
  31                 self.title  = title
  32                 self.types  = types
  33                 self.tags   = tags
  34
  35                 self.random = "random" in args
  36                 self.lucky  = "lucky" in args
  37                 self.limit  = 1 if self.lucky else None
  38                 self.order_by  = args.get("sort")
  39                 self.order_dir = args.get("order") or "desc"
  40
  41                 self.hide_nonfree = "nonfree" in hide_flags
  42                 self.hide_flags = set(hide_flags)
  43                 self.hide_flags.discard("nonfree")
  44
  45                 # Filters
  46
  47                 self.search = args.get("q")
  48                 self.minetest_version = args.get("engine_version")
  49                 self.protocol_version = get_int_or_abort(args.get("protocol_version"))
  50                 self.author = args.get("author")
  51
  52                 self.show_discarded = isYes(args.get("show_discarded"))
  53                 self.show_added = args.get("show_added")
  54                 if self.show_added is not None:
  55                         self.show_added = isYes(self.show_added)
  56
  57                 if self.search is not None and self.search.strip() == "":
  58                         self.search = None
  59
  60         def setSortIfNone(self, name, dir="desc"):
  61                 if self.order_by is None:
  62                         self.order_by = name
  63                         self.order_dir = dir
  64
  65         def getMinetestVersion(self):
  66                 if not self.protocol_version and not self.minetest_version:
  67                         return None
  68
  69                 return MinetestRelease.get(self.minetest_version, self.protocol_version)
  70
  71         def buildPackageQuery(self):
  72                 query = Package.query.filter_by(soft_deleted=False, approved=True)
  73
  74                 if len(self.types) > 0:
  75                         query = query.filter(Package.type.in_(self.types))
  76
  77                 if self.search:
  78                         query = query.search(self.search, sort=self.order_by is None)
  79
  80                 if self.random:
  81                         query = query.order_by(func.random())
  82                 else:
  83                         to_order = None
  84                         if self.order_by is None and self.search:
  85                                 pass
  86                         elif self.order_by is None or self.order_by == "score":
  87                                 to_order = Package.score
  88                         elif self.order_by == "name":
  89                                 to_order = Package.name
  90                         elif self.order_by == "title":
  91                                 to_order = Package.title
  92                         elif self.order_by == "downloads":
  93                                 to_order = Package.downloads
  94                         elif self.order_by == "created_at" or self.order_by == "date":
  95                                 to_order = Package.created_at
  96                         else:
  97                                 abort(400)
  98
  99                         if to_order:
 100                                 if self.order_dir == "asc":
 101                                         to_order = db.asc(to_order)
 102                                 elif self.order_dir == "desc":
 103                                         to_order = db.desc(to_order)
 104                                 else:
 105                                         abort(400)
 106
 107                                 query = query.order_by(to_order)
 108
 109                 if self.author:
 110                         author = User.query.filter_by(username=self.author).first()
 111                         if not author:
 112                                 abort(404)
 113
 114                         query = query.filter_by(author=author)
 115
 116                 for tag in self.tags:
 117                         query = query.filter(Package.tags.any(Tag.id == tag.id))
 118
 119                 if "android_default" in self.hide_flags:
 120                         query = query.filter(~ Package.content_warnings.any())
 121                 else:
 122                         for flag in self.hide_flags:
 123                                 warning = ContentWarning.query.filter_by(name=flag).first()
 124                                 if warning:
 125                                         query = query.filter(~ Package.content_warnings.any(ContentWarning.id == warning.id))
 126
 127                 if self.hide_nonfree:
 128                         query = query.filter(Package.license.has(License.is_foss == True))
 129                         query = query.filter(Package.media_license.has(License.is_foss == True))
 130
 131                 if self.protocol_version or self.minetest_version:
 132                         version = self.getMinetestVersion()
 133                         if version:
 134                                 query = query.join(Package.releases) \
 135                                         .filter(PackageRelease.approved==True) \
 136                                         .filter(or_(PackageRelease.min_rel_id==None, PackageRelease.min_rel_id<=version.id)) \
 137                                         .filter(or_(PackageRelease.max_rel_id==None, PackageRelease.max_rel_id>=version.id))
 138
 139                 if self.limit:
 140                         query = query.limit(self.limit)
 141
 142                 return query
 143
 144         def buildTopicQuery(self, show_added=False):
 145                 query = ForumTopic.query
 146
 147                 if not self.show_discarded:
 148                         query = query.filter_by(discarded=False)
 149
 150                 show_added = self.show_added == True or (self.show_added is None and show_added)
 151                 if not show_added:
 152                         query = query.filter(~ db.exists().where(Package.forums==ForumTopic.topic_id))
 153
 154                 if self.order_by is None or self.order_by == "name":
 155                         query = query.order_by(db.asc(ForumTopic.wip), db.asc(ForumTopic.name), db.asc(ForumTopic.title))
 156                 elif self.order_by == "views":
 157                         query = query.order_by(db.desc(ForumTopic.views))
 158                 elif self.order_by == "created_at" or self.order_by == "date":
 159                         query = query.order_by(db.asc(ForumTopic.created_at))
 160
 161                 if self.search:
 162                         query = query.filter(ForumTopic.title.ilike('%' + self.search + '%'))
 163
 164                 if len(self.types) > 0:
 165                         query = query.filter(ForumTopic.type.in_(self.types))
 166
 167                 if self.limit:
 168                         query = query.limit(self.limit)
 169
 170                 return query