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danbooru2023.db

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:16c23b0d61161aa777802dc4d0414402c8f7cf2b1535998449afdec8ae51dd61
-size 10739814400
+oid sha256:7e3f2c1ac2eb698c83f76d14f8b1bde575f5c70fa91f23e4884f2984aafe2d49
+size 10714025984

db.py

@@ -3,6 +3,7 @@ import sqlite3
 
 from peewee import *
 from playhouse.sqlite_ext import FTS5Model, SearchField
+from playhouse.shortcuts import model_to_dict
 
 
 class MemoryConnection(sqlite3.Connection):
@@ -62,6 +63,23 @@ class TagListField(TextField, SearchField):
             ]
 
 
+class EnumField(IntegerField):
+    def __init__(self, enum_list, *args, **kwargs):
+        super().__init__(*args, **kwargs)
+        self.enum_list = enum_list
+        self.enum_map = {value: index for index, value in enumerate(enum_list)}
+
+    def db_value(self, value):
+        if isinstance(value, str):
+            return self.enum_map[value]
+        assert isinstance(value, int)
+        return value
+
+    def python_value(self, value):
+        if value is not None:
+            return self.enum_list[value]
+
+
 class BaseModel(Model):
     class Meta:
         database = db
@@ -88,7 +106,7 @@ class Post(BaseModel):
     file_size = IntegerField()
     file_ext = CharField()
 
-    rating = CharField()
+    rating = EnumField(["general", "sensitive", "questionable", "explicit"])
     score = IntegerField()
     up_score = IntegerField()
     down_score = IntegerField()
@@ -128,13 +146,20 @@ class PostFTS(FTS5Model):
 class Tag(BaseModel):
     id = IntegerField(primary_key=True)
     name = CharField(unique=True)
-    type = CharField()
+    type = EnumField(["general", "artist", "character", "copyright", "meta"])
     popularity = IntegerField()
 
+    def __str__(self):
+        return f"<Tag: {self.name}>"
+
 
 if __name__ == "__main__":
+    from objprint import objprint
+
     db.connect()
     for index in db.get_indexes("post"):
         print(index)
+    post = Post.select().first()
+    objprint(model_to_dict(post))
     # db.create_tables([Post, Tag])
     # db.save()

db_utils.py

@@ -0,0 +1,19 @@
+from numpy import base_repr
+from db import *
+
+
+def get_post_by_tag(tag: Tag):
+    id_str = f"${base_repr(tag.id, 36)}#"
+    return (
+        Post.select()
+        .join(PostFTS, on=(Post.id == PostFTS.rowid))
+        .where(PostFTS.tag_list.contains(id_str))
+    )
+
+
+def get_tag_by_name(name: str):
+    return Tag.get(name=name)
+
+
+def get_tags_by_popularity(n: int):
+    return Tag.select().where(Tag.popularity >= n)