Print-errors update. (#53)

## Изменения
Добавлены русские описания ошибок, возникающих при попытке печати файла.

## Реализации
В хэндлеры добавлены новые поля с русским описанием ошибок.

## Детали
В каждый хэндлер, в возвращаемый JSON добавлено поле 'ru', содержащее
русское описание ошибки.

## Check-List
- [x] Вы проверили свой код перед отправкой запроса?
- [x] Вы написали тесты к реализованным функциям? - **НЕ ТРЕБУЕТСЯ**
- [x] Вы не забыли применить black и isort?

***P.S. Проставьте x в квадратные скобки в нужных пунктах. Example:
[x]***

print_service/base.py

@@ -15,3 +15,4 @@ class Config:
 class StatusResponseModel(Base):
     status: str
     message: str
+    ru: str

print_service/routes/exc_handlers.py

@@ -1,3 +1,4 @@
+import requests.models
 import starlette.requests
 from starlette.responses import JSONResponse
 
@@ -22,126 +23,183 @@
     UserNotFound,
 )
 from print_service.routes.base import app
+from print_service.settings import get_settings
+
+
+settings = get_settings()
 
 
 @app.exception_handler(TooLargeSize)
 async def too_large_size(req: starlette.requests.Request, exc: TooLargeSize):
     return JSONResponse(
-        content=StatusResponseModel(status="Error", message=f"{exc}").dict(), status_code=413
+        content=StatusResponseModel(
+            status="Error",
+            message=f"{exc}",
+            ru=f"Размер файла превышает максимально допустимый: {settings.MAX_SIZE}",
+        ).dict(),
+        status_code=413,
     )
 
 
 @app.exception_handler(TooManyPages)
 async def too_many_pages(req: starlette.requests.Request, exc: TooManyPages):
     return JSONResponse(
-        content=StatusResponseModel(status="Error", message=f"{exc}").dict(), status_code=413
+        content=StatusResponseModel(
+            status="Error",
+            message=f"{exc}",
+            ru=f"Количество запрошенных страниц превышает допустимое число: {settings.MAX_PAGE_COUNT}",
+        ).dict(),
+        status_code=413,
     )
 
 
 @app.exception_handler(InvalidPageRequest)
 async def invalid_format(req: starlette.requests.Request, exc: TooManyPages):
     return JSONResponse(
-        content=StatusResponseModel(status="Error", message=f"{exc}").dict(), status_code=416
+        content=StatusResponseModel(
+            status="Error",
+            message=f"{exc}",
+            ru="Количество запрошенных страниц превышает их количество в файле",
+        ).dict(),
+        status_code=416,
     )
 
 
 @app.exception_handler(TerminalQRNotFound)
 async def terminal_not_found_by_qr(req: starlette.requests.Request, exc: TerminalQRNotFound):
     return JSONResponse(
-        content=StatusResponseModel(status="Error", message=f"Terminal not found by QR").dict(),
+        content=StatusResponseModel(
+            status="Error", message="Terminal not found by QR", ru="QR-код не найден"
+        ).dict(),
         status_code=400,
     )
 
 
 @app.exception_handler(TerminalTokenNotFound)
 async def terminal_not_found_by_token(req: starlette.requests.Request, exc: TerminalTokenNotFound):
     return JSONResponse(
-        content=StatusResponseModel(status="Error", message=f"Terminal not found by token").dict(),
+        content=StatusResponseModel(
+            status="Error", message="Terminal not found by token", ru="Токен не найден"
+        ).dict(),
         status_code=400,
     )
 
 
 @app.exception_handler(UserNotFound)
 async def user_not_found(req: starlette.requests.Request, exc: UserNotFound):
     return JSONResponse(
-        content=StatusResponseModel(status="Error", message=f"User not found").dict(), status_code=404
+        content=StatusResponseModel(
+            status="Error", message="User not found", ru="Пользователь не найден"
+        ).dict(),
+        status_code=404,
     )
 
 
 @app.exception_handler(UnionStudentDuplicate)
 async def student_duplicate(req: starlette.requests.Request, exc: UnionStudentDuplicate):
     return JSONResponse(
-        content=StatusResponseModel(status="Error", message=f"{exc}").dict(), status_code=400
+        content=StatusResponseModel(
+            status="Error",
+            message=f"{exc}",
+            ru="Один или более пользователей в списке не являются уникальными",
+        ).dict(),
+        status_code=400,
     )
 
 
 @app.exception_handler(NotInUnion)
 async def not_in_union(req: starlette.requests.Request, exc: NotInUnion):
     return JSONResponse(
-        content=StatusResponseModel(status="Error", message=f"{exc}").dict(), status_code=403
+        content=StatusResponseModel(
+            status="Error",
+            message=f"{exc}",
+            ru="Отсутствует членство в профсоюзе",
+        ).dict(),
+        status_code=403,
     )
 
 
 @app.exception_handler(PINGenerateError)
 async def generate_error(req: starlette.requests.Request, exc: PINGenerateError):
     return JSONResponse(
-        content=StatusResponseModel(status="Error", message=f"{exc}").dict(), status_code=500
+        content=StatusResponseModel(
+            status="Error",
+            message=f"{exc}",
+            ru="Ошибка генерации ПИН-кода",
+        ).dict(),
+        status_code=500,
     )
 
 
 @app.exception_handler(FileIsNotReceived)
 async def file_not_received(req: starlette.requests.Request, exc: FileIsNotReceived):
     return JSONResponse(
-        content=StatusResponseModel(status="Error", message=f"{exc}").dict(), status_code=400
+        content=StatusResponseModel(status="Error", message=f"{exc}", ru="Файл не получен").dict(),
+        status_code=400,
     )
 
 
 @app.exception_handler(PINNotFound)
 async def pin_not_found(req: starlette.requests.Request, exc: PINNotFound):
     return JSONResponse(
-        content=StatusResponseModel(status="Error", message=f"Pin {exc.pin} not found").dict(),
+        content=StatusResponseModel(
+            status="Error", message=f"Pin {exc.pin} not found", ru="ПИН не найден"
+        ).dict(),
         status_code=404,
     )
 
 
 @app.exception_handler(InvalidType)
 async def invalid_type(req: starlette.requests.Request, exc: InvalidType):
     return JSONResponse(
-        content=StatusResponseModel(status="Error", message=f"{exc}").dict(), status_code=415
+        content=StatusResponseModel(
+            status="Error",
+            message=f"{exc}",
+            ru=f"Неподдерживаемый формат файла. Допустимые: {', '.join(settings.CONTENT_TYPES)}",
+        ).dict(),
+        status_code=415,
     )
 
 
 @app.exception_handler(AlreadyUploaded)
 async def already_upload(req: starlette.requests.Request, exc: AlreadyUploaded):
     return JSONResponse(
-        content=StatusResponseModel(status="Error", message=f"{exc}").dict(), status_code=415
+        content=StatusResponseModel(status="Error", message=f"{exc}", ru="Файл уже загружен").dict(),
+        status_code=415,
     )
 
 
 @app.exception_handler(IsCorrupted)
 async def is_corrupted(req: starlette.requests.Request, exc: IsCorrupted):
     return JSONResponse(
-        content=StatusResponseModel(status="Error", message=f"{exc}").dict(), status_code=415
+        content=StatusResponseModel(status="Error", message=f"{exc}", ru="Файл повреждён").dict(),
+        status_code=415,
     )
 
 
 @app.exception_handler(UnprocessableFileInstance)
 async def unprocessable_file_instance(req: starlette.requests.Request, exc: UnprocessableFileInstance):
     return JSONResponse(
-        content=StatusResponseModel(status="Error", message=f"{exc}").dict(), status_code=422
+        content=StatusResponseModel(
+            status="Error", message=f"{exc}", ru="Необрабатываемый экземпляр файла"
+        ).dict(),
+        status_code=422,
     )
 
 
 @app.exception_handler(FileNotFound)
 async def file_not_found(req: starlette.requests.Request, exc: FileNotFound):
     return JSONResponse(
-        content=StatusResponseModel(status="Error", message=f"{exc.count} file(s) not found").dict(),
+        content=StatusResponseModel(
+            status="Error", message=f"{exc.count} file(s) not found", ru="Файл не найден"
+        ).dict(),
         status_code=404,
     )
 
 
 @app.exception_handler(IsNotUploaded)
 async def not_uploaded(req: starlette.requests.Request, exc: IsNotUploaded):
     return JSONResponse(
-        content=StatusResponseModel(status="Error", message=f"{exc}").dict(), status_code=415
+        content=StatusResponseModel(status="Error", message=f"{exc}", ru="Файл не загружен").dict(),
+        status_code=415,
     )

print_service/routes/file.py

@@ -11,6 +11,7 @@
 from pydantic import Field, validator
 from sqlalchemy import func, or_
 
+from print_service.base import StatusResponseModel
 from print_service.exceptions import (
     AlreadyUploaded,
     FileIsNotReceived,
@@ -100,7 +101,8 @@ class ReceiveOutput(BaseModel):
 @router.post(
     '',
     responses={
-        403: {'detail': 'User error'},
+        403: {'model': StatusResponseModel, 'detail': 'User error'},
+        500: {'model': StatusResponseModel, 'detail': 'PIN generate error'},
     },
     response_model=SendOutput,
 )
@@ -124,7 +126,7 @@ async def send(inp: SendInput, settings: Settings = Depends(get_settings)):
     try:
         pin = generate_pin(db.session)
     except RuntimeError:
-        raise PINGenerateError
+        raise PINGenerateError()
     filename = generate_filename(inp.filename)
     file_model = FileModel(pin=pin, file=filename)
     file_model.owner = user
@@ -147,8 +149,11 @@ async def send(inp: SendInput, settings: Settings = Depends(get_settings)):
 @router.post(
     '/{pin:str}',
     responses={
-        404: {'detail': 'Pin not found'},
-        415: {'detail': 'File error'},
+        400: {'model': StatusResponseModel, 'detail': 'File is not received'},
+        404: {'model': StatusResponseModel, 'detail': 'Pin not found'},
+        415: {'model': StatusResponseModel, 'detail': 'File error'},
+        413: {'model': StatusResponseModel, 'detail': 'Too large file'},
+        416: {'model': StatusResponseModel, 'detail': 'Invalid page request'},
     },
     response_model=SendOutput,
 )
@@ -216,7 +221,9 @@ async def upload_file(
 @router.patch(
     '/{pin:str}',
     responses={
-        404: {'detail': 'Pin not found'},
+        404: {'model': StatusResponseModel, 'detail': 'Pin not found'},
+        413: {'model': StatusResponseModel, 'detail': 'Too many pages'},
+        416: {'model': StatusResponseModel, 'detail': 'Invalid page request'},
     },
     response_model=SendOutput,
 )
@@ -261,8 +268,9 @@ async def update_file_options(
 @router.get(
     '/{pin:str}',
     responses={
-        404: {'detail': 'Pin not found'},
-        415: {'detail': 'File error'},
+        404: {'model': StatusResponseModel, 'detail': 'Pin not found'},
+        415: {'model': StatusResponseModel, 'detail': 'File error'},
+        416: {'model': StatusResponseModel, 'detail': 'Invalid page request'},
     },
     response_model=ReceiveOutput,
 )