#!/usr/bin/env python
# -*- coding: utf-8 -*-
# **************************************************************************
# Copyright © 2016 jianglin
# File Name: views.py
# Author: jianglin
# Email: xiyang0807@gmail.com
# Created: 2016-12-22 21:49:05 (CST)
# Last Update: Wednesday 2019-05-08 15:09:18 (CST)
#          By:
# Description:
# **************************************************************************
from flask import render_template, request

from forums.api.tag.db import Tags
from forums.api.topic.db import Topic
from forums.api.collect.db import Collect
from forums.api.user.db import User
from forums.common.response import HTTPResponse
from forums.common.views import IsAuthMethodView as MethodView
from forums.api.message.db import MessageClient


class FollowingTagsView(MethodView):
    def get(self):
        user = request.user
        page, number = self.pageinfo
        filter_dict = {'followers__username': user.username}
        tags = Tags.query.filter_by(**filter_dict).paginate(page, number, True)
        data = {'tags': tags}
        return render_template('follow/following_tags.html', **data)

    def post(self):
        user = request.user
        post_data = request.data
        tag_id = post_data.pop('tagId', None)
        if tag_id is not None and not User.query.filter_by(
                following_tags__id=tag_id).exists():
            tag = Tags.query.filter_by(id=tag_id).first_or_404()
            user.following_tags.append(tag)
            user.save()
        return HTTPResponse(HTTPResponse.NORMAL_STATUS).to_response()

    def delete(self):
        user = request.user
        post_data = request.data
        tag_id = post_data.pop('tagId', None)
        if tag_id is not None and User.query.filter_by(
                following_tags__id=tag_id).exists():
            tag = Tags.query.filter_by(id=tag_id).first_or_404()
            user.following_tags.remove(tag)
            user.save()
        return HTTPResponse(HTTPResponse.NORMAL_STATUS).to_response()


class FollowingTopicsView(MethodView):
    def get(self):
        user = request.user
        page, number = self.pageinfo
        filter_dict = {'followers__username': user.username}
        topics = Topic.query.filter_by(**filter_dict).paginate(page, number,
                                                               True)
        data = {'topics': topics}
        return render_template('follow/following_topics.html', **data)

    def post(self):
        user = request.user
        post_data = request.data
        topic_id = post_data.pop('pk', None)
        if topic_id is not None and not User.query.filter_by(
                following_topics__id=topic_id).exists():
            topic = Topic.query.filter_by(id=topic_id).first_or_404()
            user.following_topics.append(topic)
            user.save()
            # notice
            MessageClient.follow(topic)
        return HTTPResponse(HTTPResponse.NORMAL_STATUS).to_response()

    def delete(self):
        user = request.user
        post_data = request.data
        topic_id = post_data.pop('pk', None)
        if topic_id is not None and User.query.filter_by(
                following_topics__id=topic_id).exists():
            topic = Topic.query.filter_by(id=topic_id).first_or_404()
            user.following_topics.remove(topic)
            user.save()
        return HTTPResponse(HTTPResponse.NORMAL_STATUS).to_response()


class FollowingUsersView(MethodView):
    def get(self):
        user = request.user
        page, number = self.pageinfo
        users = user.following_users.paginate(page, number, True)
        data = {'users': users}
        return render_template('follow/following_users.html', **data)

    def post(self):
        user = request.user
        post_data = request.data
        user_id = post_data.pop('userId', None)
        if user_id is not None:
            f_user = User.query.filter_by(id=user_id).first_or_404()
            if not f_user.is_followed(user):
                user.following_users.append(f_user)
                user.save()
            MessageClient.follow(f_user)
        return HTTPResponse(HTTPResponse.NORMAL_STATUS).to_response()

    def delete(self):
        user = request.user
        post_data = request.data
        user_id = post_data.pop('userId', None)
        if user_id is not None:
            f_user = User.query.filter_by(id=user_id).first_or_404()
            if f_user.is_followed(user):
                user.following_users.remove(f_user)
                user.save()
        return HTTPResponse(HTTPResponse.NORMAL_STATUS).to_response()


class FollowingCollectsView(MethodView):
    def get(self):
        user = request.user
        page, number = self.pageinfo
        filter_dict = {'followers__username': user.username}
        collects = Collect.query.filter_by(**filter_dict).paginate(
            page, number, True)

        data = {'collects': collects}
        return render_template('follow/following_collects.html', **data)

    def post(self):
        user = request.user
        post_data = request.data
        collect_id = post_data.pop('collectId', None)
        if collect_id is not None and not User.query.filter_by(
                following_collects__id=collect_id).exists():
            collect = Collect.query.filter_by(id=collect_id).first_or_404()
            user.following_collects.append(collect)
            user.save()
        return HTTPResponse(HTTPResponse.NORMAL_STATUS).to_response()

    def delete(self):
        user = request.user
        post_data = request.data
        collect_id = post_data.pop('collectId', None)
        if collect_id is not None and User.query.filter_by(
                following_collects__id=collect_id).exists():
            collect = Collect.query.filter_by(id=collect_id).first_or_404()
            user.following_collects.remove(collect)
            user.save()
        return HTTPResponse(HTTPResponse.NORMAL_STATUS).to_response()