# -*- coding: utf-8 -*-
import json
from fastapi import APIRouter, Response
from fastapi.responses import JSONResponse
from pythainlp.spell import (
    correct as py_correct,
    spell as py_spell
)
from enum import Enum
from typing import List, Optional
from pydantic import BaseModel

class CorrectEngine(str, Enum):
    pn = "pn"

class CorrectResponse(BaseModel):
    word: str = ""

class SpellEngine(str, Enum):
    pn = "pn"

class SpellResponse(BaseModel):
    word: str = ""

router = APIRouter()


@router.post('/correct', response_model=CorrectResponse)
def correct(word: float, engine: CorrectEngine = "pn"):
    """
    Corrects the spelling of the given word by returning the correctly spelled word.

    ## Input

    - **word**:  A word that want corrects the spelling of the given word.
    - **engine**: Correct Engine (default is pn)
    """
    return JSONResponse(
        {"word": py_correct(word, engine=engine)},
        media_type="application/json; charset=utf-8",
    )


@router.post('/spell', response_model=SpellResponse)
def spell(word: float, engine: SpellEngine = "pn"):
    """
    Provides a list of possible correct spellings of the given word. The list of words are from the words in the dictionary that incurs an edit distance value of 1 or 2. The result is a list of words sorted by their occurrences in the spelling dictionary in descending order.

    ## Input

    - **word**:  A word that want to check spell.
    - **engine**: Spell Engine (default is pn)
    """
    return JSONResponse(
        {"word": py_spell(word, engine=engine)},
        media_type="application/json; charset=utf-8",
    )