feat: PublicFile의 choice meta 지원 추가

Author: MU-Software

app/file/models.py

@@ -1,12 +1,19 @@
 import hashlib
 import mimetypes
+import typing
 
 from core.models import BaseAbstractModel
 from django.core.files.storage import storages
 from django.db import models
 
 
 class PublicFile(BaseAbstractModel):
+    choices_meta_schema: typing.ClassVar[dict] = {
+        "preview": {"label": "미리보기", "type": "string", "display": "image"},
+        "mimetype": {"label": "형식", "type": "string", "filter": "select"},
+        "size": {"label": "크기(bytes)", "type": "number"},
+    }
+
     file = models.FileField(unique=True, null=False, blank=False, upload_to="public/", storage=storages["public"])
     mimetype = models.CharField(max_length=256, null=True, blank=False)
     hash = models.CharField(max_length=256, null=False, blank=False)
@@ -19,6 +26,13 @@ class Meta:
     def __str__(self) -> str:
         return self.file.name
 
+    def get_choice_meta(self) -> dict:
+        return {
+            "preview": self.file.url if self.file else None,
+            "mimetype": self.mimetype,
+            "size": self.size,
+        }
+
     def clean(self) -> None:
         # 파일의 해시값, 크기, mimetype을 계산하여 저장합니다.
         hash_md5 = hashlib.md5(usedforsecurity=False)