import base64
import json
import os
from dataclasses import dataclass
from http import HTTPMethod

import layercake.jsonl as jsonl
import pytest
from layercake.dynamodb import DynamoDBPersistenceLayer

PYTEST_TABLE_NAME = 'pytest'
PK = os.getenv('DYNAMODB_PARTITION_KEY', 'pk')
SK = os.getenv('DYNAMODB_SORT_KEY', 'sk')


@dataclass
class LambdaContext:
    function_name: str = 'test'
    memory_limit_in_mb: int = 128
    invoked_function_arn: str = 'arn:aws:lambda:eu-west-1:809313241:function:test'
    aws_request_id: str = '52fdfc07-2182-154f-163f-5f0f9a621d72'


class HttpApiProxy:
    def __call__(
        self,
        raw_path: str,
        method: str = HTTPMethod.GET,
        body: dict = {},
        *,
        headers: dict = {},
        **kwargs,
    ) -> dict:
        return {
            'version': '2.0',
            'routeKey': '$default',
            'rawPath': raw_path,
            'rawQueryString': 'parameter1=value1&parameter1=value2&parameter2=value',
            'cookies': ['cookie1', 'cookie2'],
            'headers': headers,
            'queryStringParameters': {
                'parameter1': 'value1,value2',
                'parameter2': 'value',
            },
            'requestContext': {
                'accountId': '123456789012',
                'apiId': 'api-id',
                'authorizer': {
                    'lambda': {
                        'user': {
                            'name': 'Sérgio R Siqueira',
                            'email': 'sergio@somosbeta.com.br',
                            'email_verified': 'true',
                            'custom:user_id': '5OxmMjL-ujoR5IMGegQz',
                            'sub': 'c4f30dbd-083e-4b84-aa50-c31afe9b9c01',
                        },
                    },
                    'jwt': {
                        'claims': {'claim1': 'value1', 'claim2': 'value2'},
                        'scopes': ['scope1', 'scope2'],
                    },
                },
                'domainName': 'id.execute-api.us-east-1.amazonaws.com',
                'domainPrefix': 'id',
                'http': {
                    'method': str(method),
                    'path': raw_path,
                    'protocol': 'HTTP/1.1',
                    'sourceIp': '192.168.0.1/32',
                    'userAgent': 'agent',
                },
                'requestId': 'id',
                'routeKey': '$default',
                'stage': '$default',
                'time': '12/Mar/2020:19:03:58 +0000',
                'timeEpoch': 1583348638390,
            },
            'body': _base64_dict(body),
            'pathParameters': {'parameter1': 'value1'},
            'isBase64Encoded': True,
            'stageVariables': {'stageVariable1': 'value1', 'stageVariable2': 'value2'},
        }


def _base64_dict(obj: dict = {}) -> str | None:
    if not obj:
        return None
    return base64.b64encode(json.dumps(obj).encode()).decode()


@pytest.fixture
def lambda_context() -> LambdaContext:
    return LambdaContext()


@pytest.fixture
def http_api_proxy():
    return HttpApiProxy()


@pytest.fixture
def dynamodb_client():
    from boto3clients import dynamodb_client as client

    client.create_table(
        AttributeDefinitions=[
            {'AttributeName': PK, 'AttributeType': 'S'},
            {'AttributeName': SK, 'AttributeType': 'S'},
        ],
        TableName=PYTEST_TABLE_NAME,
        KeySchema=[
            {'AttributeName': PK, 'KeyType': 'HASH'},
            {'AttributeName': SK, 'KeyType': 'RANGE'},
        ],
        ProvisionedThroughput={
            'ReadCapacityUnits': 123,
            'WriteCapacityUnits': 123,
        },
    )

    yield client

    client.delete_table(TableName=PYTEST_TABLE_NAME)


@pytest.fixture()
def dynamodb_persistence_layer(dynamodb_client) -> DynamoDBPersistenceLayer:
    return DynamoDBPersistenceLayer(PYTEST_TABLE_NAME, dynamodb_client)


@pytest.fixture()
def dynamodb_seeds(dynamodb_client):
    with jsonl.readlines('tests/seeds.jsonl') as lines:
        for line in lines:
            dynamodb_client.put_item(TableName=PYTEST_TABLE_NAME, Item=line)


@pytest.fixture
def mock_app(monkeypatch):
    for table_name in ['USER_TABLE', 'COURSE_TABLE']:
        monkeypatch.setenv(table_name, PYTEST_TABLE_NAME)

    import app

    return app