from auth.authenticate import login_required
from auth.credentials import AuthCredentials
from base.orm import local_session
from base.resolvers import query, mutation
from base.exceptions import ObjectNotExist, BaseHttpException
from orm.draft import DraftCollab, DraftAuthor, DraftTopic
from orm.shout import Shout
from orm.user import User


@query.field("loadDrafts")
@login_required
async def load_drafts(_, info):
    auth: AuthCredentials = info.context["request"].auth
    drafts = []
    with local_session() as session:
        drafts = session.query(DraftCollab).filter(auth.user_id in DraftCollab.authors)
        return drafts


@mutation.field("createDraft") # TODO
@login_required
async def create_draft(_, info, draft_input):
    auth: AuthCredentials = info.context["request"].auth

    with local_session() as session:
        collab = DraftCollab.create(**draft_input)
        session.add(collab)
        session.commit()

    # TODO: email notify to all authors
    return {}


@mutation.field("deleteDraft") # TODO
@login_required
async def delete_draft(_, info, draft: int = 0):
    auth: AuthCredentials = info.context["request"].auth

    with local_session() as session:
        collab = session.query(DraftCollab).where(DraftCollab.id == draft_input.id).one()
        if auth.user_id not in s.authors:
            # raise BaseHttpException("only owner can remove coauthors")
            return {
                "error": "Only authors can update a draft"
            }
        elif not collab:
            return {
                "error": "There is no draft with this id"
            }
        else:
            session.delete(collab)
            session.commit()
            return {}


@mutation.field("updateDraft") # TODO: draft input type
@login_required
async def update_draft(_, info, draft_input):
    auth: AuthCredentials = info.context["request"].auth

    with local_session() as session:
        collab = session.query(DraftCollab).where(DraftCollab.id == draft_input.id).one()  # raises Error when not found
        if auth.user_id not in s.authors:
            # raise BaseHttpException("only owner can remove coauthors")
            return {
                "error": "Only authors can update draft"
            }
        elif not s:
            return {
                "error": "There is no draft with this id"
            }
        else:
            draft_input["updatedAt"] = datetime.now(tz=timezone.utc)
            collab.update(**draft_input)
            session.commit()

    # TODO: email notify
    return {}

@mutation.field("inviteAuthor")
@login_required
async def invite_coauthor(_, info, author: int = 0, draft: int = 0):
    auth: AuthCredentials = info.context["request"].auth

    with local_session() as session:
        c = session.query(DraftCollab).where(DraftCollab.id == draft).one()
        if auth.user_id not in c.authors:
            # raise BaseHttpException("you are not in authors list")
            return {
                "error": "You are not in authors list"
            }
        elif c.id:
            invited_user = session.query(User).where(User.id == author).one()
            da = DraftAuthor.create({
                "accepted": False,
                "collab": c.id,
                "author": invited_user.id
            })
            session.add(da)
            session.commit()
        else:
            return {
                "error": "Draft is not found"
            }

    # TODO: email notify
    return {}


@mutation.field("inviteAccept")
@login_required
async def accept_coauthor(_, info, draft: int):
    auth: AuthCredentials = info.context["request"].auth

    with local_session() as session:
        # c = session.query(DraftCollab).where(DraftCollab.id == draft).one()
        a = session.query(DraftAuthor).where(DraftAuthor.collab == draft).filter(DraftAuthor.author == auth.user_id).one()
        if not a.accepted:
            a.accepted = True
            session.commit()
            # TODO: email notify
            return {}
        elif a.accepted == True:
            return {
                "error": "You have accepted invite before"
            }
        else:
            # raise BaseHttpException("only invited can accept")
            return {
                "error": "You don't have an invitation yet"
            }