feat: first commit, auth

config.py

@@ -0,0 +1,41 @@
+import os
+
+from pydantic import Field, ValidationError, computed_field
+from pydantic_settings import BaseSettings, SettingsConfigDict
+
+
+class Settings(BaseSettings):
+    model_config = SettingsConfigDict(env_file=".env")
+
+    postgres_user: str = Field()
+    postgres_password: str = Field()
+    postgres_host: str = Field()
+    postgres_port: str = Field()
+    postgres_db: str = Field()
+
+    private_key_fp: str = Field()
+    public_key_fp: str = Field()
+
+    @computed_field
+    @property
+    def db_url(self) -> str:
+        return f"postgresql+asyncpg://{self.postgres_user}:{self.postgres_password}@{self.postgres_host}:{self.postgres_port}/{self.postgres_db}"
+
+    @computed_field
+    @property
+    def private_key(self) -> bytes:
+        if not os.path.isfile(self.private_key_fp):
+            raise ValidationError("Private key is not found")
+        with open(self.private_key_fp, "rb") as f:
+            return f.read()
+
+    @computed_field
+    @property
+    def public_key(self) -> bytes:
+        if not os.path.isfile(self.public_key_fp):
+            raise ValidationError("Public key is not found")
+        with open(self.public_key_fp, "rb") as f:
+            return f.read()
+
+
+cfg = Settings()  # type: ignore