import pytest
from dataclasses import fields

from twhatter.output import Database
from twhatter.output.sqlalchemy import Tweet, User as DbUser
from twhatter.parser import *


@pytest.fixture
def db_url():
    return "sqlite://"


@pytest.fixture(scope="function")
def output(db_url):
    return Database(db_url)


@pytest.fixture(scope="function")
def session(output):
    session = output.session_maker()
    yield session
    session.close()


class TestTweetsOutput:
    testdata = [
        pytest.param('tests/fixtures/tweets/text_only_10.yaml', TweetTextOnly,
                     id="text-only"),
        pytest.param('tests/fixtures/tweets/retweet_10.yaml', TweetRetweet,
                     id="retweets"),
        pytest.param('tests/fixtures/tweets/link_10.yaml', TweetLink,
                     id="link"),
        pytest.param('tests/fixtures/tweets/reaction_9.yaml', TweetReaction,
                     id="reaction"),
    ]

    @pytest.fixture(scope="function")
    def tweets_output_factory(self, tweets_factory, output):
        """Tweets that have been output"""

        def _tweets_output_factory(fixtures_file):
            tweets = tweets_factory(fixtures_file)
            output.start()
            output.output_tweets(tweets)
            output.stop()
            return tweets

        return _tweets_output_factory

    @pytest.mark.parametrize("fixtures_file, raw_class", testdata)
    def test_presence(self, tweets_factory, output, fixtures_file, session, raw_class):
        tweets = tweets_factory(fixtures_file)
        output.start()
        output.output_tweets(tweets)
        output.stop()

        for t in tweets:
            assert session.query(Tweet).filter(Tweet.id == t.id).one()


    @pytest.mark.parametrize("fixtures_file, raw_class", testdata)
    def test_twice(self, tweets_factory, output, fixtures_file, session, raw_class):
        tweets = tweets_factory(fixtures_file)
        output.start()
        output.output_tweets(tweets)
        output.stop()

        output.start()
        output.output_tweets(tweets)
        output.stop()

        for t in tweets:
            assert session.query(Tweet).filter(Tweet.id == t.id).one()


    @pytest.mark.parametrize("field_name, fixtures_file, raw_tweet_cls", [
        pytest.param(
            field.name,
            *td.values,
            id="{}-{}".format(td.id, field.name)
        )
        for td in testdata
        for field in fields(TweetTextOnly)
        if field.name != 'media'
    ])
    def test_attributes(self, tweets_output_factory, fixtures_file, session, raw_tweet_cls, field_name):
        tweets = tweets_output_factory(fixtures_file)

        for t in tweets:
            db_tweet = session.query(Tweet).filter(Tweet.id == t.id).one()
            assert getattr(db_tweet, field_name) == getattr(t, field_name)


class TestUsersOutput:
    testdata = [
        pytest.param('tests/fixtures/users/users_1.yaml', User,
                     id="users"),
    ]

    @pytest.fixture(scope="function")
    def users_output_factory(self, users_factory, output):
        """Factory for users that have been output"""
        def _users_output_factory(fixtures_file):
            users = users_factory(fixtures_file)
            output.start()
            output.output_users(users)
            output.stop()
            return users

        return _users_output_factory

    @pytest.mark.parametrize("fixtures_file, raw_class", testdata)
    def test_presence(self, users_factory, output, fixtures_file, session, raw_class):
        users = users_factory(fixtures_file)
        output.start()
        output.output_users(users)
        output.stop()

        for u in users:
            assert session.query(DbUser).filter(DbUser.id == u.id).one()


    @pytest.mark.parametrize("fixtures_file, raw_class", testdata)
    def test_twice(self, users_factory, output, fixtures_file, session, raw_class):
        users = users_factory(fixtures_file)
        output.start()
        output.output_users(users)
        output.stop()

        output.start()
        output.output_users(users)
        output.stop()

        for u in users:
            assert session.query(DbUser).filter(DbUser.id == u.id).one()


    @pytest.mark.parametrize("field_name, fixtures_file, raw_tweet_cls", [
        pytest.param(
            field.name,
            *td.values,
            id="{}-{}".format(td.id, field.name)
        )
        for td in testdata
        for field in fields(User)
    ])
    def test_attributes(self, users_output_factory, fixtures_file, session, raw_tweet_cls, field_name):
        users = users_output_factory(fixtures_file)

        for u in users:
            db_tweet = session.query(DbUser).filter(DbUser.id == u.id).one()
            assert getattr(db_tweet, field_name) == getattr(u, field_name)