# -*- coding: utf-8 -*-
from matplotlib import pyplot as plt
import matplotlib
import settings
import re

plt.rcParams['font.family'] = settings.FONT

class view:

    def __init__(self, itemList):
        self.id = itemList[0]
        self.string = itemList[1]

    def getFont():  # 列出可用的字体
        font = sorted([f.name for f in matplotlib.font_manager.fontManager.ttflist])
        for i in font:
            print(i)

    def main(self):

        def str2data(string) -> list:
            reg = r"[+-]?([0-9]*\.?[0-9]+|[0-9]+\.?[0-9]*)"
            pattern = re.compile(reg)
            return pattern.findall(string)

        def show(itemList):

            x = []
            y = []

            while itemList:
                temp = itemList.pop()

                date = temp[0] + "月" + temp[1] + "日"
                price = "￥" + temp[2] + "元"
                x.append(date)
                y.append(price)

                date = temp[3] + "月" + temp[4] + "日"
                price = "￥" + temp[5] + "元"
                x.append(date)
                y.append(price)

            plt.title("价格趋势")
            plt.bar(x, y, color = 'g', align = 'center')
            plt.xticks(size = 10.0, rotation = 45)
            plt.xlabel("日期")
            plt.ylabel("价格")
            plt.plot(x, y, color = 'red', linewidth = 5.0, linestyle = '--')  

            plt.show()

        itemList = []
        for astr in self.string.split(';'):
            strList = str2data(astr)
            try:
                print(astr)
                itemList.append(strList)
            except BaseException:
                break
        show(itemList)

def getData():
    pass