# _*_ coding: utf-8 _*_

import logging
import GetData_zhihu

# flask
from flask import Flask, session, request
from flask import render_template, flash, redirect, url_for, jsonify

# flask extends
from flask_bootstrap import Bootstrap
from flask_wtf import FlaskForm
from wtforms import StringField, PasswordField, SubmitField
from wtforms.validators import Length, Email

# application
app = Flask(__name__)
app.config["SECRET_KEY"] = "hard to guess string"

# manager and bootstrap
bootstrap = Bootstrap(app=app)

# global data
zhihu_all_topics = GetData_zhihu.get_all_topics()
zhihu_all_topics_key = {}
zhihu_init_topics = GetData_zhihu.get_topic_data(topic_id="19559424", topic_name="数据分析")


# form class
class UserForm(FlaskForm):
    name = StringField("name", validators=[Email(message="邮箱格式不正确！")])
    password = PasswordField("password",  validators=[Length(min=6, message="密码长度至少6位！")])
    submit = SubmitField("提 交")


@app.route("/", methods=["GET", "POST"])
def temp():
    return redirect(url_for("index"))


@app.route("/index/", methods=["GET", "POST"])
def index():
    user_form = UserForm()
    if request.method == "POST":
        if user_form.validate_on_submit():
            session["username"] = user_form.name.data
        else:
            flash(user_form.errors["name"][0] if "name" in user_form.errors else user_form.errors["password"][0])
    else:
        if request.args.get("action") == "login_out":
            flash("您已成功退出系统！")
            session["username"] = None
            return redirect(url_for("index"))
        elif request.args.get("action") == "overview":
            session["page_type"] = "overview"
            return redirect(url_for("index"))
        elif request.args.get("action") == "zhihu_topics":
            session["page_type"] = "zhihu_topics"
            return redirect(url_for("index"))
    return render_template("index.html", name=session.get("username"), page_type=session.get("page_type", "overview"), form=user_form)


@app.route("/zhihu_get_topics_list/", methods=["post"])
def zhihu_get_topics_list():
    key = request.form.get("key")
    result = {"success": 1, "data": []}
    if key:
        if key in zhihu_all_topics_key:
            result = zhihu_all_topics_key[key]
        else:
            for item in zhihu_all_topics:
                if item[1].find(key) >= 0:
                    result["data"].append({"id": item[0], "name": item[1]})
            if len(result["data"]) > 0:
                result["success"] = 1
                zhihu_all_topics_key[key] = result
                logging.debug("all_topics_key increase: %s", len(zhihu_all_topics_key))
    return jsonify(result)


@app.route("/zhihu_get_topics_data/", methods=["post"])
def zhihu_get_topics_data():
    if request.form["id"] == "19554449":
        result = zhihu_init_topics
    else:
        result = GetData_zhihu.get_topic_data(request.form["id"], request.form["name"])
    return jsonify(result)


@app.errorhandler(404)
def page_not_found(excep):
    return render_template("error.html", error=excep, name=session.get("username")), 404


# main process
if __name__ == "__main__":
    logging.basicConfig(level=logging.DEBUG, format="%(asctime)s\t%(levelname)s\t%(message)s")
    logging.debug("app url_map: %s", app.url_map)

    app.run()