app/models.py

   1 # Content DB
   2 # Copyright (C) 2018  rubenwardy
   3 #
   4 # This program is free software: you can redistribute it and/or modify
   5 # it under the terms of the GNU General Public License as published by
   6 # the Free Software Foundation, either version 3 of the License, or
   7 # (at your option) any later version.
   8 #
   9 # This program is distributed in the hope that it will be useful,
  10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 # GNU General Public License for more details.
  13 #
  14 # You should have received a copy of the GNU General Public License
  15 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
  16
  17
  18 from flask import Flask, url_for
  19 from flask_sqlalchemy import SQLAlchemy
  20 from flask_migrate import Migrate
  21 from urllib.parse import urlparse
  22 from app import app
  23 from datetime import datetime
  24 from sqlalchemy.orm import validates
  25 from flask_user import login_required, UserManager, UserMixin, SQLAlchemyAdapter
  26 import enum
  27
  28 # Initialise database
  29 db = SQLAlchemy(app)
  30 migrate = Migrate(app, db)
  31
  32
  33 class UserRank(enum.Enum):
  34         BANNED         = 0
  35         NOT_JOINED     = 1
  36         NEW_MEMBER     = 2
  37         MEMBER         = 3
  38         TRUSTED_MEMBER = 4
  39         EDITOR         = 5
  40         MODERATOR      = 6
  41         ADMIN          = 7
  42
  43         def atLeast(self, min):
  44                 return self.value >= min.value
  45
  46         def getTitle(self):
  47                 return self.name.replace("_", " ").title()
  48
  49         def toName(self):
  50                 return self.name.lower()
  51
  52         def __str__(self):
  53                 return self.name
  54
  55         @classmethod
  56         def choices(cls):
  57                 return [(choice, choice.getTitle()) for choice in cls]
  58
  59         @classmethod
  60         def coerce(cls, item):
  61                 return item if type(item) == UserRank else UserRank[item]
  62
  63
  64 class Permission(enum.Enum):
  65         EDIT_PACKAGE       = "EDIT_PACKAGE"
  66         APPROVE_CHANGES    = "APPROVE_CHANGES"
  67         DELETE_PACKAGE     = "DELETE_PACKAGE"
  68         CHANGE_AUTHOR      = "CHANGE_AUTHOR"
  69         MAKE_RELEASE       = "MAKE_RELEASE"
  70         ADD_SCREENSHOTS    = "ADD_SCREENSHOTS"
  71         APPROVE_SCREENSHOT = "APPROVE_SCREENSHOT"
  72         APPROVE_RELEASE    = "APPROVE_RELEASE"
  73         APPROVE_NEW        = "APPROVE_NEW"
  74         CHANGE_RELEASE_URL = "CHANGE_RELEASE_URL"
  75         CHANGE_DNAME       = "CHANGE_DNAME"
  76         CHANGE_RANK        = "CHANGE_RANK"
  77         CHANGE_EMAIL       = "CHANGE_EMAIL"
  78         EDIT_EDITREQUEST   = "EDIT_EDITREQUEST"
  79
  80         # Only return true if the permission is valid for *all* contexts
  81         # See Package.checkPerm for package-specific contexts
  82         def check(self, user):
  83                 if not user.is_authenticated:
  84                         return False
  85
  86                 if self == Permission.APPROVE_NEW or \
  87                                 self == Permission.APPROVE_CHANGES or \
  88                                 self == Permission.APPROVE_RELEASE or \
  89                                 self == Permission.APPROVE_SCREENSHOT:
  90                         return user.rank.atLeast(UserRank.EDITOR)
  91                 else:
  92                         raise Exception("Non-global permission checked globally. Use Package.checkPerm or User.checkPerm instead.")
  93
  94
  95 class User(db.Model, UserMixin):
  96         id = db.Column(db.Integer, primary_key=True)
  97
  98         # User authentication information
  99         username = db.Column(db.String(50), nullable=False, unique=True)
 100         password = db.Column(db.String(255), nullable=False, server_default="")
 101         reset_password_token = db.Column(db.String(100), nullable=False, server_default="")
 102
 103         rank = db.Column(db.Enum(UserRank))
 104
 105         # Account linking
 106         github_username = db.Column(db.String(50), nullable=True, unique=True)
 107         forums_username = db.Column(db.String(50), nullable=True, unique=True)
 108
 109         # User email information
 110         email = db.Column(db.String(255), nullable=True, unique=True)
 111         confirmed_at = db.Column(db.DateTime())
 112
 113         # User information
 114         active = db.Column("is_active", db.Boolean, nullable=False, server_default="0")
 115         display_name = db.Column(db.String(100), nullable=False, server_default="")
 116
 117         # Content
 118         notifications = db.relationship("Notification", primaryjoin="User.id==Notification.user_id")
 119
 120         # causednotifs  = db.relationship("Notification", backref="causer", lazy="dynamic")
 121         packages      = db.relationship("Package", backref="author", lazy="dynamic")
 122         requests      = db.relationship("EditRequest", backref="author", lazy="dynamic")
 123
 124         def __init__(self, username):
 125                 import datetime
 126
 127                 self.username = username
 128                 self.confirmed_at = datetime.datetime.now() - datetime.timedelta(days=6000)
 129                 self.display_name = username
 130                 self.rank = UserRank.NOT_JOINED
 131
 132         def canAccessTodoList(self):
 133                 return Permission.APPROVE_NEW.check(self) or \
 134                                 Permission.APPROVE_RELEASE.check(self) or \
 135                                 Permission.APPROVE_CHANGES.check(self)
 136
 137         def isClaimed(self):
 138                 return self.rank.atLeast(UserRank.NEW_MEMBER)
 139
 140         def checkPerm(self, user, perm):
 141                 if not user.is_authenticated:
 142                         return False
 143
 144                 if type(perm) == str:
 145                         perm = Permission[perm]
 146                 elif type(perm) != Permission:
 147                         raise Exception("Unknown permission given to User.checkPerm()")
 148
 149                 # Members can edit their own packages, and editors can edit any packages
 150                 if perm == Permission.CHANGE_AUTHOR:
 151                         return user.rank.atLeast(UserRank.EDITOR)
 152                 elif perm == Permission.CHANGE_RANK or perm == Permission.CHANGE_DNAME:
 153                         return user.rank.atLeast(UserRank.MODERATOR)
 154                 elif perm == Permission.CHANGE_EMAIL:
 155                         return user == self or (user.rank.atLeast(UserRank.MODERATOR) and user.rank.atLeast(self.rank))
 156                 else:
 157                         raise Exception("Permission {} is not related to users".format(perm.name))
 158
 159 class UserEmailVerification(db.Model):
 160         id      = db.Column(db.Integer, primary_key=True)
 161         user_id = db.Column(db.Integer, db.ForeignKey("user.id"))
 162         email   = db.Column(db.String(100))
 163         token   = db.Column(db.String(32))
 164         user    = db.relationship("User", foreign_keys=[user_id])
 165
 166 class Notification(db.Model):
 167         id        = db.Column(db.Integer, primary_key=True)
 168         user_id   = db.Column(db.Integer, db.ForeignKey("user.id"))
 169         causer_id = db.Column(db.Integer, db.ForeignKey("user.id"))
 170         user      = db.relationship("User", foreign_keys=[user_id])
 171         causer    = db.relationship("User", foreign_keys=[causer_id])
 172
 173         title     = db.Column(db.String(100), nullable=False)
 174         url       = db.Column(db.String(200), nullable=True)
 175
 176         def __init__(self, us, cau, titl, ur):
 177                 self.user   = us
 178                 self.causer = cau
 179                 self.title  = titl
 180                 self.url    = ur
 181
 182
 183 class License(db.Model):
 184         id = db.Column(db.Integer, primary_key=True)
 185         name = db.Column(db.String(50), nullable=False, unique=True)
 186         packages = db.relationship("Package", backref="license", lazy="dynamic")
 187
 188         def __init__(self, v):
 189                 self.name = v
 190
 191         def __str__(self):
 192                 return self.name
 193
 194
 195 class PackageType(enum.Enum):
 196         MOD  = "Mod"
 197         GAME = "Game"
 198         TXP  = "Texture Pack"
 199
 200         def toName(self):
 201                 return self.name.lower()
 202
 203         def __str__(self):
 204                 return self.name
 205
 206         @classmethod
 207         def choices(cls):
 208                 return [(choice, choice.value) for choice in cls]
 209
 210         @classmethod
 211         def coerce(cls, item):
 212                 return item if type(item) == PackageType else PackageType[item]
 213
 214
 215 class PackagePropertyKey(enum.Enum):
 216         name         = "Name"
 217         title        = "Title"
 218         shortDesc    = "Short Description"
 219         desc         = "Description"
 220         type         = "Type"
 221         license      = "License"
 222         tags         = "Tags"
 223         provides     = "Provides"
 224         repo         = "Repository"
 225         website      = "Website"
 226         issueTracker = "Issue Tracker"
 227         forums       = "Forum Topic ID"
 228
 229         def convert(self, value):
 230                 if self == PackagePropertyKey.tags:
 231                         return ",".join([t.title for t in value])
 232                 elif self == PackagePropertyKey.provides:
 233                         return ",".join([t.name for t in value])
 234                 else:
 235                         return str(value)
 236
 237 provides = db.Table("provides",
 238         db.Column("package_id",    db.Integer, db.ForeignKey("package.id"), primary_key=True),
 239     db.Column("metapackage_id", db.Integer, db.ForeignKey("meta_package.id"), primary_key=True)
 240 )
 241
 242 tags = db.Table("tags",
 243     db.Column("tag_id", db.Integer, db.ForeignKey("tag.id"), primary_key=True),
 244     db.Column("package_id", db.Integer, db.ForeignKey("package.id"), primary_key=True)
 245 )
 246
 247 class Dependency(db.Model):
 248         id              = db.Column(db.Integer, primary_key=True)
 249         depender_id     = db.Column(db.Integer, db.ForeignKey("package.id"),     nullable=True)
 250         package_id      = db.Column(db.Integer, db.ForeignKey("package.id"),     nullable=True)
 251         package         = db.relationship("Package", foreign_keys=[package_id])
 252         meta_package_id = db.Column(db.Integer, db.ForeignKey("meta_package.id"), nullable=True)
 253         optional        = db.Column(db.Boolean, nullable=False, default=False)
 254         __table_args__  = (db.UniqueConstraint('depender_id', 'package_id', 'meta_package_id', name='_dependency_uc'), )
 255
 256         def __init__(self, depender=None, package=None, meta=None):
 257                 if depender is None:
 258                         return
 259
 260                 self.depender = depender
 261
 262                 packageProvided = package is not None
 263                 metaProvided = meta is not None
 264
 265                 if packageProvided and not metaProvided:
 266                         self.package = package
 267                 elif metaProvided and not packageProvided:
 268                         self.meta_package = meta
 269                 else:
 270                         raise Exception("Either meta or package must be given, but not both!")
 271
 272         def __str__(self):
 273                 if self.package is not None:
 274                         return self.package.author.username + "/" + self.package.name
 275                 elif self.meta_package is not None:
 276                         return self.meta_package.name
 277                 else:
 278                         raise Exception("Meta and package are both none!")
 279
 280         @staticmethod
 281         def SpecToList(depender, spec, cache={}):
 282                 retval = []
 283                 arr = spec.split(",")
 284
 285                 import re
 286                 pattern1 = re.compile("^([a-z0-9_]+)$")
 287                 pattern2 = re.compile("^([A-Za-z0-9_]+)/([a-z0-9_]+)$")
 288
 289                 for x in arr:
 290                         x = x.strip()
 291                         if x == "":
 292                                 continue
 293
 294                         if pattern1.match(x):
 295                                 meta = MetaPackage.GetOrCreate(x, cache)
 296                                 retval.append(Dependency(depender, meta=meta))
 297                         else:
 298                                 m = pattern2.match(x)
 299                                 username = m.group(1)
 300                                 name     = m.group(2)
 301                                 user = User.query.filter_by(username=username).first()
 302                                 if user is None:
 303                                         raise Exception("Unable to find user " + username)
 304
 305                                 package = Package.query.filter_by(author=user, name=name).first()
 306                                 if package is None:
 307                                         raise Exception("Unable to find package " + name + " by " + username)
 308
 309                                 retval.append(Dependency(depender, package=package))
 310
 311                 return retval
 312
 313
 314
 315 class Package(db.Model):
 316         id           = db.Column(db.Integer, primary_key=True)
 317
 318         # Basic details
 319         author_id    = db.Column(db.Integer, db.ForeignKey("user.id"))
 320         name         = db.Column(db.String(100), nullable=False)
 321         title        = db.Column(db.String(100), nullable=False)
 322         shortDesc    = db.Column(db.String(200), nullable=False)
 323         desc         = db.Column(db.Text, nullable=True)
 324         type         = db.Column(db.Enum(PackageType))
 325         created_at   = db.Column(db.DateTime, nullable=False, default=datetime.utcnow)
 326
 327         license_id   = db.Column(db.Integer, db.ForeignKey("license.id"))
 328
 329         approved     = db.Column(db.Boolean, nullable=False, default=False)
 330         soft_deleted = db.Column(db.Boolean, nullable=False, default=False)
 331
 332         # Downloads
 333         repo         = db.Column(db.String(200), nullable=True)
 334         website      = db.Column(db.String(200), nullable=True)
 335         issueTracker = db.Column(db.String(200), nullable=True)
 336         forums       = db.Column(db.Integer,     nullable=True)
 337
 338         provides = db.relationship("MetaPackage", secondary=provides, lazy="subquery",
 339                         backref=db.backref("packages", lazy=True))
 340
 341         dependencies = db.relationship("Dependency", backref="depender", lazy="dynamic", foreign_keys=[Dependency.depender_id])
 342
 343         tags = db.relationship("Tag", secondary=tags, lazy="subquery",
 344                         backref=db.backref("packages", lazy=True))
 345
 346         releases = db.relationship("PackageRelease", backref="package",
 347                         lazy="dynamic", order_by=db.desc("package_release_releaseDate"))
 348
 349         screenshots = db.relationship("PackageScreenshot", backref="package",
 350                         lazy="dynamic")
 351
 352         requests = db.relationship("EditRequest", backref="package",
 353                         lazy="dynamic")
 354
 355         def __init__(self, package=None):
 356                 if package is None:
 357                         return
 358
 359                 self.author_id = package.author_id
 360                 self.created_at = package.created_at
 361                 self.approved = package.approved
 362
 363                 for e in PackagePropertyKey:
 364                         setattr(self, e.name, getattr(package, e.name))
 365
 366         def getAsDictionary(self, base_url):
 367                 return {
 368                         "name": self.name,
 369                         "title": self.title,
 370                         "author": self.author.display_name,
 371                         "shortDesc": self.shortDesc,
 372                         "type": self.type.toName(),
 373                         "license": self.license.name,
 374                         "repo": self.repo,
 375                         "url": base_url + self.getDownloadURL(),
 376                         "release": self.getDownloadRelease().id if self.getDownloadRelease() is not None else None,
 377                         "screenshots": [base_url + ss.url for ss in self.screenshots],
 378                         "thumbnail": base_url + self.getThumbnailURL()
 379                 }
 380
 381         def getThumbnailURL(self):
 382                 screenshot = self.screenshots.filter_by(approved=True).first()
 383                 return screenshot.getThumbnailURL() if screenshot is not None else None
 384
 385         def getMainScreenshotURL(self):
 386                 screenshot = self.screenshots.filter_by(approved=True).first()
 387                 return screenshot.url if screenshot is not None else None
 388
 389         def getDetailsURL(self):
 390                 return url_for("package_page",
 391                                 author=self.author.username, name=self.name)
 392
 393         def getEditURL(self):
 394                 return url_for("create_edit_package_page",
 395                                 author=self.author.username, name=self.name)
 396
 397         def getApproveURL(self):
 398                 return url_for("approve_package_page",
 399                                 author=self.author.username, name=self.name)
 400
 401         def getDeleteURL(self):
 402                 return url_for("delete_package_page",
 403                                 author=self.author.username, name=self.name)
 404
 405         def getNewScreenshotURL(self):
 406                 return url_for("create_screenshot_page",
 407                                 author=self.author.username, name=self.name)
 408
 409         def getCreateReleaseURL(self):
 410                 return url_for("create_release_page",
 411                                 author=self.author.username, name=self.name)
 412
 413         def getCreateEditRequestURL(self):
 414                 return url_for("create_edit_editrequest_page",
 415                                 author=self.author.username, name=self.name)
 416
 417         def getDownloadURL(self):
 418                 return url_for("package_download_page",
 419                                 author=self.author.username, name=self.name)
 420
 421         def getDownloadRelease(self):
 422                 for rel in self.releases:
 423                         if rel.approved:
 424                                 return rel
 425
 426                 return None
 427
 428         def canImportScreenshot(self):
 429                 if self.repo is None:
 430                         return False
 431
 432                 url = urlparse(self.repo)
 433                 if url.netloc == "github.com":
 434                         return True
 435
 436                 return False
 437
 438         def canMakeReleaseFromVCS(self):
 439                 if self.repo is None:
 440                         return False
 441
 442                 url = urlparse(self.repo)
 443                 if url.netloc == "github.com":
 444                         return True
 445
 446                 return False
 447
 448         def checkPerm(self, user, perm):
 449                 if not user.is_authenticated:
 450                         return False
 451
 452                 if type(perm) == str:
 453                         perm = Permission[perm]
 454                 elif type(perm) != Permission:
 455                         raise Exception("Unknown permission given to Package.checkPerm()")
 456
 457                 isOwner = user == self.author
 458
 459                 # Members can edit their own packages, and editors can edit any packages
 460                 if perm == Permission.MAKE_RELEASE or perm == Permission.ADD_SCREENSHOTS:
 461                         return isOwner or user.rank.atLeast(UserRank.EDITOR)
 462
 463                 if perm == Permission.EDIT_PACKAGE or perm == Permission.APPROVE_CHANGES:
 464                         if isOwner:
 465                                 return user.rank.atLeast(UserRank.MEMBER if self.approved else UserRank.NEW_MEMBER)
 466                         else:
 467                                 return user.rank.atLeast(UserRank.EDITOR)
 468
 469                 # Editors can change authors
 470                 elif perm == Permission.CHANGE_AUTHOR:
 471                         return user.rank.atLeast(UserRank.EDITOR)
 472
 473                 elif perm == Permission.APPROVE_NEW or perm == Permission.APPROVE_RELEASE \
 474                                 or perm == Permission.APPROVE_SCREENSHOT:
 475                         return user.rank.atLeast(UserRank.TRUSTED_MEMBER if isOwner else UserRank.EDITOR)
 476
 477                 # Moderators can delete packages
 478                 elif perm == Permission.DELETE_PACKAGE or perm == Permission.CHANGE_RELEASE_URL:
 479                         return user.rank.atLeast(UserRank.MODERATOR)
 480
 481                 else:
 482                         raise Exception("Permission {} is not related to packages".format(perm.name))
 483
 484 class MetaPackage(db.Model):
 485         id           = db.Column(db.Integer, primary_key=True)
 486         name         = db.Column(db.String(100), unique=True, nullable=False)
 487         dependencies = db.relationship("Dependency", backref="meta_package", lazy="dynamic")
 488
 489         def __init__(self, name=None):
 490                 self.name = name
 491
 492         def __str__(self):
 493                 return self.name
 494
 495         @staticmethod
 496         def ListToSpec(list):
 497                 return ",".join([str(x) for x in list])
 498
 499         @staticmethod
 500         def GetOrCreate(name, cache={}):
 501                 mp = cache.get(name)
 502                 if mp is None:
 503                         mp = MetaPackage.query.filter_by(name=name).first()
 504
 505                 if mp is None:
 506                         mp = MetaPackage(name)
 507                         db.session.add(mp)
 508
 509                 cache[name] = mp
 510                 return mp
 511
 512         @staticmethod
 513         def SpecToList(spec, cache={}):
 514                 retval = []
 515                 arr = spec.split(",")
 516
 517                 import re
 518                 pattern = re.compile("^([a-z0-9_]+)$")
 519
 520                 for x in arr:
 521                         x = x.strip()
 522                         if x == "":
 523                                 continue
 524
 525                         if not pattern.match(x):
 526                                 continue
 527
 528                         retval.append(MetaPackage.GetOrCreate(x, cache))
 529
 530                 return retval
 531
 532 class Tag(db.Model):
 533         id              = db.Column(db.Integer,    primary_key=True)
 534         name            = db.Column(db.String(100), unique=True, nullable=False)
 535         title           = db.Column(db.String(100), nullable=False)
 536         backgroundColor = db.Column(db.String(6),   nullable=False)
 537         textColor       = db.Column(db.String(6),   nullable=False)
 538
 539         def __init__(self, title, backgroundColor="000000", textColor="ffffff"):
 540                 self.title           = title
 541                 self.backgroundColor = backgroundColor
 542                 self.textColor       = textColor
 543
 544                 import re
 545                 regex = re.compile("[^a-z_]")
 546                 self.name = regex.sub("", self.title.lower().replace(" ", "_"))
 547
 548 class PackageRelease(db.Model):
 549         id           = db.Column(db.Integer, primary_key=True)
 550
 551         package_id   = db.Column(db.Integer, db.ForeignKey("package.id"))
 552         title        = db.Column(db.String(100), nullable=False)
 553         releaseDate  = db.Column(db.DateTime,        nullable=False)
 554         url          = db.Column(db.String(200), nullable=False)
 555         approved     = db.Column(db.Boolean, nullable=False, default=False)
 556         task_id      = db.Column(db.String(37), nullable=True)
 557
 558
 559         def getEditURL(self):
 560                 return url_for("edit_release_page",
 561                                 author=self.package.author.username,
 562                                 name=self.package.name,
 563                                 id=self.id)
 564
 565         def __init__(self):
 566                 self.releaseDate = datetime.now()
 567
 568 class PackageScreenshot(db.Model):
 569         id         = db.Column(db.Integer, primary_key=True)
 570         package_id = db.Column(db.Integer, db.ForeignKey("package.id"))
 571         title      = db.Column(db.String(100), nullable=False)
 572         url        = db.Column(db.String(100), nullable=False)
 573         approved   = db.Column(db.Boolean, nullable=False, default=False)
 574
 575
 576         def getEditURL(self):
 577                 return url_for("edit_screenshot_page",
 578                                 author=self.package.author.username,
 579                                 name=self.package.name,
 580                                 id=self.id)
 581
 582         def getThumbnailURL(self):
 583                 return self.url.replace("/uploads/", "/thumbnails/350x233/")
 584
 585 class EditRequest(db.Model):
 586         id           = db.Column(db.Integer, primary_key=True)
 587
 588         package_id   = db.Column(db.Integer, db.ForeignKey("package.id"))
 589         author_id    = db.Column(db.Integer, db.ForeignKey("user.id"))
 590
 591         title        = db.Column(db.String(100), nullable=False)
 592         desc         = db.Column(db.String(1000), nullable=True)
 593
 594         # 0 - open
 595         # 1 - merged
 596         # 2 - rejected
 597         status       = db.Column(db.Integer, nullable=False, default=0)
 598
 599         changes = db.relationship("EditRequestChange", backref="request",
 600                         lazy="dynamic")
 601
 602         def getURL(self):
 603                 return url_for("view_editrequest_page",
 604                                 author=self.package.author.username,
 605                                 name=self.package.name,
 606                                 id=self.id)
 607
 608         def getApproveURL(self):
 609                 return url_for("approve_editrequest_page",
 610                                 author=self.package.author.username,
 611                                 name=self.package.name,
 612                                 id=self.id)
 613
 614         def getRejectURL(self):
 615                 return url_for("reject_editrequest_page",
 616                                 author=self.package.author.username,
 617                                 name=self.package.name,
 618                                 id=self.id)
 619
 620         def getEditURL(self):
 621                 return url_for("create_edit_editrequest_page",
 622                                 author=self.package.author.username,
 623                                 name=self.package.name,
 624                                 id=self.id)
 625
 626         def applyAll(self, package):
 627                 for change in self.changes:
 628                         change.apply(package)
 629
 630
 631         def checkPerm(self, user, perm):
 632                 if not user.is_authenticated:
 633                         return False
 634
 635                 if type(perm) == str:
 636                         perm = Permission[perm]
 637                 elif type(perm) != Permission:
 638                         raise Exception("Unknown permission given to EditRequest.checkPerm()")
 639
 640                 isOwner = user == self.author
 641
 642                 # Members can edit their own packages, and editors can edit any packages
 643                 if perm == Permission.EDIT_EDITREQUEST:
 644                         return isOwner or user.rank.atLeast(UserRank.EDITOR)
 645
 646                 else:
 647                         raise Exception("Permission {} is not related to packages".format(perm.name))
 648
 649
 650
 651
 652 class EditRequestChange(db.Model):
 653         id           = db.Column(db.Integer, primary_key=True)
 654
 655         request_id   = db.Column(db.Integer, db.ForeignKey("edit_request.id"))
 656         key          = db.Column(db.Enum(PackagePropertyKey), nullable=False)
 657
 658         # TODO: make diff instead
 659         oldValue     = db.Column(db.Text, nullable=True)
 660         newValue     = db.Column(db.Text, nullable=True)
 661
 662         def apply(self, package):
 663                 if self.key == PackagePropertyKey.tags:
 664                         package.tags.clear()
 665                         for tagTitle in self.newValue.split(","):
 666                                 tag = Tag.query.filter_by(title=tagTitle.strip()).first()
 667                                 package.tags.append(tag)
 668
 669                 else:
 670                         setattr(package, self.key.name, self.newValue)
 671
 672 # Setup Flask-User
 673 db_adapter = SQLAlchemyAdapter(db, User)        # Register the User model
 674 user_manager = UserManager(db_adapter, app)     # Initialize Flask-User