from .. import db, socketio
from ..decorators import background
from ..models import Corpus, CorpusFile, QueryResult


@background
def build_corpus(corpus_id, *args, **kwargs):
    app = kwargs['app']
    with app.app_context():
        corpus = Corpus.query.get(corpus_id)
        if corpus is None:
            raise Exception('Corpus {} not found'.format(corpus_id))
        corpus.build()
        db.session.commit()
        event = 'user_{}_patch'.format(corpus.user_id)
        jsonpatch = [{'op': 'replace', 'path': '/corpora/{}/last_edited_date'.format(corpus.id), 'value': corpus.last_edited_date.timestamp()},  # noqa
                     {'op': 'replace', 'path': '/corpora/{}/status'.format(corpus.id), 'value': corpus.status}]  # noqa
        room = 'user_{}'.format(corpus.user_id)
        socketio.emit(event, jsonpatch, room=room)


@background
def delete_corpus(corpus_id, *args, **kwargs):
    with kwargs['app'].app_context():
        corpus = Corpus.query.get(corpus_id)
        if corpus is None:
            raise Exception('Corpus {} not found'.format(corpus_id))
        event = 'user_{}_patch'.format(corpus.user_id)
        jsonpatch = [{'op': 'remove', 'path': '/corpora/{}'.format(corpus.id)}]
        room = 'user_{}'.format(corpus.user_id)
        corpus.delete()
        db.session.commit()
        socketio.emit(event, jsonpatch, room=room)


@background
def delete_corpus_file(corpus_file_id, *args, **kwargs):
    with kwargs['app'].app_context():
        corpus_file = CorpusFile.query.get(corpus_file_id)
        if corpus_file is None:
            raise Exception('Corpus file {} not found'.format(corpus_file_id))
        event = 'user_{}_patch'.format(corpus_file.corpus.user_id)
        jsonpatch = [{'op': 'remove', 'path': '/corpora/{}/files/{}'.format(corpus_file.corpus_id, corpus_file.id)},  # noqa
                     {'op': 'replace', 'path': '/corpora/{}/status'.format(corpus_file.corpus_id), 'value': corpus_file.corpus.status}]  # noqa
        room = 'user_{}'.format(corpus_file.corpus.user_id)
        corpus_file.delete()
        db.session.commit()
        socketio.emit(event, jsonpatch, room=room)


@background
def delete_query_result(query_result_id, *args, **kwargs):
    with kwargs['app'].app_context():
        query_result = QueryResult.query.get(query_result_id)
        if query_result is None:
            raise Exception('QueryResult {} not found'.format(query_result_id))
        event = 'user_{}_patch'.format(query_result.user_id)
        jsonpatch = [{'op': 'remove', 'path': '/query_results/{}'.format(query_result.id)}]  # noqa
        room = 'user_{}'.format(query_result.user_id)
        query_result.delete()
        db.session.commit()
        socketio.emit(event, jsonpatch, room=room)