from datetime import UTC, datetime, timedelta

import allure
import pytest
from fastapi import HTTPException
from jose import jwt

from src.models.configs_read.env import env_settings
from src.service.auth.jwt import Hashes, Jwt


@pytest.mark.unit
class TestJwt:

    @pytest.mark.parametrize("data", [
        pytest.param({"sub": "123"}, id="full_sub")
    ])
    def test_access_create_positive(self, jwt_service:Jwt, data:dict)->None:
        
        with allure.step("create correct access token"):
            token = jwt_service.create_access_token(data)
            parts=token.split(".")
            assert isinstance(token, str)
            assert len(parts)==3
                    
               
                    
    @pytest.mark.parametrize("data, expected_exception",[
        pytest.param("", AttributeError,id="not_dict_value"),
        pytest.param({"sub":""},HTTPException, id="empty_value"),
        pytest.param({"":""},HTTPException, id="empty_key_value")
    ])
    def test_access_create_negative(self, jwt_service:Jwt, data:dict, expected_exception)->None:
        with allure.step("create invalid access token"),pytest.raises(expected_exception):
            jwt_service.create_access_token(data)
    
    
    
    @pytest.mark.parametrize("data", [
        pytest.param({"sub": "123"}, id="full_sub")
    ])
    def test_refresh_create_positive(self, jwt_service:Jwt, data:dict)->None:
        
        with allure.step("create correct access token"):
            token = jwt_service.create_refresh_token(data)
            parts=token[0].split(".")
            assert isinstance(token[0], str)
            assert isinstance(token[1], str)
            assert len(parts)==3
                    
                    
    @pytest.mark.parametrize("data, expected_exception",[
        pytest.param("", AttributeError,id="not_dict_value"),
        pytest.param({"sub":""},HTTPException, id="empty_value"),
        pytest.param({"":""},HTTPException, id="empty_key_value")
    ])
    def test_refresh_create_negative(self, jwt_service:Jwt, data, expected_exception)->None:
        with allure.step("create invalid access token"), pytest.raises(expected_exception):
            jwt_service.create_refresh_token(data)
    
    
    @pytest.mark.parametrize("data", [
        pytest.param({"sub": "123", "exp":datetime.now(UTC)+timedelta(minutes=15), "token_type":"access"}, id="correct_data"),
    ])
    def test_jwt_decode_positive(self, data:dict, monkeypatch, jwt_service:Jwt)->None:
        
        with allure.step("patch a create token function"):
            def fake_create_access_token(data:dict)->str:
                return jwt.encode(data, env_settings.SECRET_KEY, env_settings.ALGORITHM)
            monkeypatch.setattr(jwt_service, "create_access_token", fake_create_access_token)
            
        with allure.step("create and decode correct token"):
            fake_token = jwt_service.create_access_token(data)
            payload=jwt_service.jwt_decode(fake_token)
            assert payload.get("sub")
            assert payload.get("exp")
            assert payload.get("token_type")
            
    @pytest.mark.parametrize("data, expected_exception", [
        pytest.param({"sub": "123", "exp":datetime.now(UTC)-timedelta(minutes=15), "token_type":"access"}, HTTPException, id="wrong_exp"),
        pytest.param({"sub": "123", "exp":datetime.now(UTC)+timedelta(minutes=15)}, HTTPException, id="no_token_type"),
        pytest.param({"sub": "123", "token_type":"access"}, HTTPException,id="no_exp"),
        pytest.param({}, HTTPException, id="empty_data"),
        pytest.param("", AttributeError, id="not_dict_data")
    ])
    def test_jwt_decode_invalid(self,jwt_service:Jwt, expected_exception, data, monkeypatch)->None:
        with allure.step("patch a create token function"):
            def fake_create_access_token(data:dict)->str:
                return jwt.encode(data, env_settings.SECRET_KEY, env_settings.ALGORITHM)
            monkeypatch.setattr(jwt_service, "create_access_token", fake_create_access_token)
        
        with allure.step("create and decode invalid token"), pytest.raises(expected_exception):
            fake_token=jwt_service.create_access_token(data)
            jwt_service.jwt_decode(fake_token)
            
            
    @pytest.mark.parametrize("time, key, algorithm", [
        pytest.param(15, "wrong_key", "HS256",id="wrong_key"),
        pytest.param(-15, "correct_key", "HS256", id="wrong_time"),
        pytest.param(15, "correct_key", "HS512", id="wrong_algorithm"),
    ])
    def test_jwt_decode_wrong_env(self, monkeypatch, time:int, key:str, algorithm:str, jwt_service)->None:
        
        with allure.step("patch a create token function"):
            def fake_create_access_token(data:dict, key:str, algorithm:str)->str:
                data.update({"exp":datetime.now(UTC)+timedelta(minutes=time)})
                return jwt.encode(data, key, algorithm)
            monkeypatch.setattr(jwt_service, "create_access_token", fake_create_access_token)
        
        with allure.step("create and decode token with wrong data inside"), pytest.raises(HTTPException):
            fake_token=jwt_service.create_access_token({"sub": "123", "token_type":"access"}, key, algorithm)
            jwt_service.jwt_decode(fake_token)
        
    
    @pytest.mark.parametrize("password",[
        pytest.param("plain_password", id="correct_plain_password")
    ])
    def test_hash_and_veryfy_positive(self, password:str, hash_service:Hashes)->None:
        
        with allure.step("encode password"):
            encoded_password=hash_service.plain_to_hash(password)
            assert isinstance(encoded_password, str)
            assert encoded_password!=password
            
        with allure.step("decode password"):
            assert hash_service.verify_password(password, encoded_password) is True

    

    def test_verify_wrong_password(self, hash_service:Hashes)->None:
        
        with allure.step("encode password"):
            encoded_password=hash_service.plain_to_hash("plain_password")

        with allure.step("decode password"):
            assert hash_service.verify_password("wrong_password", encoded_password) is False
            
        
    def test_token_to_hash_determistic(self, hash_service:Hashes)->None:
        assert hash_service.token_to_hash("abc")==hash_service.token_to_hash("abc")
    
    def test_token_to_hash_different_input(self, hash_service:Hashes)->None:
        assert hash_service.token_to_hash("abc")!=hash_service.token_to_hash("xyz")