from fastapi import (
    Depends,
    FastAPI,
    HTTPException,
    status,
    Request,
    UploadFile,
    File,
    Form,
)


from datetime import datetime, timedelta
from typing import List, Union, Optional

from fastapi import APIRouter
from pydantic import BaseModel
import json

from apps.webui.models.files import Files, FileForm, FileModel, FileResponse
from utils.utils import get_verified_user, get_admin_user
from constants import ERROR_MESSAGES

from importlib import util
import os
import uuid

from config import SRC_LOG_LEVELS, UPLOAD_DIR


import logging

log = logging.getLogger(__name__)
log.setLevel(SRC_LOG_LEVELS["MODELS"])


router = APIRouter()

############################
# Upload File
############################


@router.post("/")
def upload_file(
    file: UploadFile = File(...),
    user=Depends(get_verified_user),
):
    log.info(f"file.content_type: {file.content_type}")
    try:
        unsanitized_filename = file.filename
        filename = os.path.basename(unsanitized_filename)

        # replace filename with uuid
        id = str(uuid.uuid4())
        file_path = f"{UPLOAD_DIR}/{filename}"

        contents = file.file.read()
        with open(file_path, "wb") as f:
            f.write(contents)
            f.close()

        file = Files.insert_new_file(
            user.id,
            FileForm(
                **{
                    "id": id,
                    "filename": filename,
                    "meta": {
                        "content_type": file.content_type,
                        "size": len(contents),
                        "path": file_path,
                    },
                }
            ),
        )

        if file:
            return file
        else:
            raise HTTPException(
                status_code=status.HTTP_400_BAD_REQUEST,
                detail=ERROR_MESSAGES.DEFAULT("Error uploading file"),
            )

    except Exception as e:
        log.exception(e)
        raise HTTPException(
            status_code=status.HTTP_400_BAD_REQUEST,
            detail=ERROR_MESSAGES.DEFAULT(e),
        )


############################
# List Files
############################


@router.get("/", response_model=List[FileModel])
async def list_files(user=Depends(get_verified_user)):
    files = Files.get_files()
    return files


############################
# Get File By Id
############################


@router.get("/{id}", response_model=Optional[FileModel])
async def get_file_by_id(id: str, user=Depends(get_verified_user)):
    file = Files.get_file_by_id(id)

    if file:
        return file
    else:
        raise HTTPException(
            status_code=status.HTTP_401_UNAUTHORIZED,
            detail=ERROR_MESSAGES.NOT_FOUND,
        )


############################
# Delete File By Id
############################


@router.delete("/{id}")
async def delete_file_by_id(id: str, user=Depends(get_verified_user)):
    file = Files.get_file_by_id(id)

    if file:
        result = Files.delete_file_by_id(id)
        if result:
            return {"message": "File deleted successfully"}
        else:
            raise HTTPException(
                status_code=status.HTTP_400_BAD_REQUEST,
                detail=ERROR_MESSAGES.DEFAULT("Error deleting file"),
            )
    else:
        raise HTTPException(
            status_code=status.HTTP_401_UNAUTHORIZED,
            detail=ERROR_MESSAGES.NOT_FOUND,
        )