from flask import Flask, render_template
from random import randrange
from flask.json import jsonify
from pyecharts import options as opts
from pyecharts.charts import Line

# pyecharts 1.X以上默认使用在线资源，此配置修改为本地
# pyecharts-assets文件夹下运行 python -m http.server 启动本地资源服务器
from pyecharts.globals import CurrentConfig
CurrentConfig.ONLINE_HOST = "http://127.0.0.1:8000/assets/"


app = Flask(__name__, static_folder="templates")


def line_base() -> Line:
    line = (
        Line()
        .add_xaxis(["{}".format(i) for i in range(10)])
        .add_yaxis(
            series_name="",
            y_axis=[randrange(50, 80) for _ in range(10)],
            is_smooth=True,
            label_opts=opts.LabelOpts(is_show=False),
        )
        .set_global_opts(
            title_opts=opts.TitleOpts(title="动态数据"),
            xaxis_opts=opts.AxisOpts(type_="value"),
            yaxis_opts=opts.AxisOpts(type_="value"),
        )
    )
    return line


@app.route("/")
def index():
    return render_template("index.html")


@app.route("/lineChart")
def get_line_chart():
    c = line_base()
    return c.dump_options_with_quotes()


idx = 9


@app.route("/lineDynamicData")
def update_line_data():
    global idx
    idx = idx+1
    return jsonify({"name": idx, "value": randrange(50, 80)})


if __name__ == "__main__":
    app.run(debug=True)