Add start of a settings (config) system

7 files changed, 188 insertions, 22 deletions

diff --git a/core/admin.py b/core/admin.py
new file mode 100644
index 0000000..e4a6ad0
--- /dev/null
+++ b/core/admin.py
@@ -0,0 +1,8 @@
+from django.contrib import admin
+
+from core.models import Config
+
+
+@admin.register(Config)
+class ConfigAdmin(admin.ModelAdmin):
+    list_display = ["id", "key", "user", "identity"]
diff --git a/core/config.py b/core/config.py
deleted file mode 100644
index b9f6878..0000000
--- a/core/config.py
+++ /dev/null
@@ -1,20 +0,0 @@
-import pydantic
-
-
-class Config(pydantic.BaseModel):
-
-    # Basic configuration options
-    site_name: str = "takahē"
-    identity_max_age: int = 24 * 60 * 60
-
-    # Cached ORM object storage
-    __singleton__ = None
-
-    class Config:
-        env_prefix = "takahe_"
-
-    @classmethod
-    def load(cls) -> "Config":
-        if cls.__singleton__ is None:
-            cls.__singleton__ = cls()
-        return cls.__singleton__
diff --git a/core/context.py b/core/context.py
index 17617b9..4346cbb 100644
--- a/core/context.py
+++ b/core/context.py
@@ -1,7 +1,10 @@
-from core.config import Config
+from core.models import Config
 
 
 def config_context(request):
     return {
-        "config": Config.load(),
+        "config": Config.load_system(),
+        "config_identity": (
+            Config.load_identity(request.identity) if request.identity else None
+        ),
     }
diff --git a/core/migrations/0001_initial.py b/core/migrations/0001_initial.py
new file mode 100644
index 0000000..2c4731f
--- /dev/null
+++ b/core/migrations/0001_initial.py
@@ -0,0 +1,63 @@
+# Generated by Django 4.1.3 on 2022-11-16 21:23
+
+import django.db.models.deletion
+from django.conf import settings
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = [
+        ("users", "0002_identity_public_key_id"),
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name="Config",
+            fields=[
+                (
+                    "id",
+                    models.BigAutoField(
+                        auto_created=True,
+                        primary_key=True,
+                        serialize=False,
+                        verbose_name="ID",
+                    ),
+                ),
+                ("key", models.CharField(max_length=500)),
+                ("json", models.JSONField(blank=True, null=True)),
+                (
+                    "image",
+                    models.ImageField(
+                        blank=True, null=True, upload_to="config/%Y/%m/%d/"
+                    ),
+                ),
+                (
+                    "identity",
+                    models.ForeignKey(
+                        blank=True,
+                        null=True,
+                        on_delete=django.db.models.deletion.CASCADE,
+                        related_name="configs",
+                        to="users.identity",
+                    ),
+                ),
+                (
+                    "user",
+                    models.ForeignKey(
+                        blank=True,
+                        null=True,
+                        on_delete=django.db.models.deletion.CASCADE,
+                        related_name="configs",
+                        to=settings.AUTH_USER_MODEL,
+                    ),
+                ),
+            ],
+            options={
+                "unique_together": {("key", "user", "identity")},
+            },
+        ),
+    ]
diff --git a/core/migrations/__init__.py b/core/migrations/__init__.py
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/core/migrations/__init__.py
diff --git a/core/models/__init__.py b/core/models/__init__.py
new file mode 100644
index 0000000..87bfe4e
--- /dev/null
+++ b/core/models/__init__.py
@@ -0,0 +1 @@
+from .config import Config  # noqa
diff --git a/core/models/config.py b/core/models/config.py
new file mode 100644
index 0000000..8a2e40b
--- /dev/null
+++ b/core/models/config.py
@@ -0,0 +1,111 @@
+from typing import ClassVar
+
+import pydantic
+from django.db import models
+from django.utils.functional import classproperty
+
+
+class Config(models.Model):
+    """
+    A configuration setting for either the server or a specific user or identity.
+
+    The possible options and their defaults are defined at the bottom of the file.
+    """
+
+    key = models.CharField(max_length=500)
+
+    user = models.ForeignKey(
+        "users.user",
+        blank=True,
+        null=True,
+        related_name="configs",
+        on_delete=models.CASCADE,
+    )
+
+    identity = models.ForeignKey(
+        "users.identity",
+        blank=True,
+        null=True,
+        related_name="configs",
+        on_delete=models.CASCADE,
+    )
+
+    json = models.JSONField(blank=True, null=True)
+    image = models.ImageField(blank=True, null=True, upload_to="config/%Y/%m/%d/")
+
+    class Meta:
+        unique_together = [
+            ("key", "user", "identity"),
+        ]
+
+    @classproperty
+    def system(cls):
+        cls.system = cls.load_system()
+        return cls.system
+
+    system: ClassVar["Config.ConfigOptions"]  # type: ignore
+
+    @classmethod
+    def load_system(cls):
+        """
+        Load all of the system config options and return an object with them
+        """
+        values = {}
+        for config in cls.objects.filter(user__isnull=True, identity__isnull=True):
+            values[config.key] = config.image or config.json
+        return cls.SystemOptions(**values)
+
+    @classmethod
+    def load_user(cls, user):
+        """
+        Load all of the user config options and return an object with them
+        """
+        values = {}
+        for config in cls.objects.filter(user=user, identity__isnull=True):
+            values[config.key] = config.image or config.json
+        return cls.UserOptions(**values)
+
+    @classmethod
+    def load_identity(cls, identity):
+        """
+        Load all of the identity config options and return an object with them
+        """
+        values = {}
+        for config in cls.objects.filter(user__isnull=True, identity=identity):
+            values[config.key] = config.image or config.json
+        return cls.IdentityOptions(**values)
+
+    @classmethod
+    def set_system(cls, key, value):
+        config_field = cls.SystemOptions.__fields__[key]
+        if not isinstance(value, config_field.type_):
+            raise ValueError(f"Invalid type for {key}: {type(value)}")
+        cls.objects.update_or_create(
+            key=key,
+            defaults={"json": value},
+        )
+
+    @classmethod
+    def set_identity(cls, identity, key, value):
+        config_field = cls.IdentityOptions.__fields__[key]
+        if not isinstance(value, config_field.type_):
+            raise ValueError(f"Invalid type for {key}: {type(value)}")
+        cls.objects.update_or_create(
+            identity=identity,
+            key=key,
+            defaults={"json": value},
+        )
+
+    class SystemOptions(pydantic.BaseModel):
+
+        site_name: str = "takahē"
+        highlight_color: str = "#449c8c"
+        identity_max_age: int = 24 * 60 * 60
+
+    class UserOptions(pydantic.BaseModel):
+
+        pass
+
+    class IdentityOptions(pydantic.BaseModel):
+
+        toot_mode: bool = False