Первый коммит

app/core/error_handlers.py

@@ -0,0 +1,37 @@
+from fastapi import FastAPI, Request
+from fastapi.responses import JSONResponse
+from pydantic import ValidationError
+
+from app.core.exceptions import AppError
+from app.schemas.common import ModuleName
+
+
+def register_error_handlers(app: FastAPI) -> None:
+    @app.exception_handler(AppError)
+    async def app_error_handler(_: Request, exc: AppError) -> JSONResponse:
+        return JSONResponse(
+            status_code=400,
+            content={"code": exc.code, "desc": exc.desc, "module": exc.module.value},
+        )
+
+    @app.exception_handler(ValidationError)
+    async def validation_error_handler(_: Request, exc: ValidationError) -> JSONResponse:
+        return JSONResponse(
+            status_code=422,
+            content={
+                "code": "validation_error",
+                "desc": str(exc),
+                "module": ModuleName.BACKEND.value,
+            },
+        )
+
+    @app.exception_handler(Exception)
+    async def generic_error_handler(_: Request, exc: Exception) -> JSONResponse:
+        return JSONResponse(
+            status_code=500,
+            content={
+                "code": "internal_error",
+                "desc": str(exc),
+                "module": ModuleName.BACKEND.value,
+            },
+        )