import pygame
import tkinter as tk
from tkinter import messagebox
from tkinter.filedialog import askdirectory
import os,time

window = tk.Tk()
window.title('播放器')
window.geometry('300x300')
pygame.mixer.init()

value = []
count = [0,0]
flag = []
filepath,musiclist = [],[]
flag.append(False)
value.append(50)

def play_music(musiclist,count,times,flag):
    if flag[0] == False:
        path.set(filepath[0] + '/' + musiclist[count[0]])
        filename = musiclist[count[0]].split('.')
        pygame.mixer.music.load(musiclist[count[0]])
        pygame.mixer.music.set_volume(value[0] / 100)
        pygame.mixer.music.play(loops = times,start = 0.0)
        flag[0] = True

def selectPath():
    path_ = askdirectory()
    path.set(path_)

def startMusic():
    filepath.clear()
    musiclist.clear()
    count[1] = 0
    filepath.append(path.get())
    flag[0] = False
    try:
        os.chdir(path.get())
        for music in os.listdir(path.get()):
            filename = music.split('.')
            if filename[-1] == 'mp3' or filename[-1] == 'flac':
                musiclist.append(music)
                count[0] = 0
                count[1] += 1
                times = 1
        play_music(musiclist,count,times,flag)
    except Exception as e:
        print(e)
        tk.messagebox.showerror('错误','请正确选择文件夹')

def quitMusic():
    pygame.mixer.music.stop()
    window.destroy()

def pauseMusic():
    pygame.mixer.music.pause()

def continueMusic():
    pygame.mixer.music.unpause()

def nextMusic():
    count[0] += 1
    if count[0] <= count[1] - 1:
        flag[0] = False
        times = 1
        play_music(musiclist,count,times,flag)
    elif count[0] == count[1]:
        count[0] = 0
        flag[0] = False
        times = 1
        play_music(musiclist,count,times,flag)

def singleMusic():
    pygame.mixer.music.play(loops = -1)

def soundAdd():
    value[0] += 5
    pygame.mixer.music.set_volume(value[0] / 100)

def soundReduce():
    value[0] -= 5
    pygame.mixer.music.set_volume(value[0] / 100)

path = tk.StringVar()
#path.set('E:/Music')
entry_1 = tk.Entry(window,textvariable = path).place(x = 100,y = 30,width = 180,height = 30)
button_1 = tk.Button(window,text = '选择目录',command = selectPath)
button_1.place(x = 30,y = 30,width = 60,height = 30)
button_2 = tk.Button(window,text = '播放',command = startMusic)
button_2.place(x = 30,y = 80,width = 100,height = 30)
button_3 = tk.Button(window,text = '下一曲',command = nextMusic)
button_3.place(x = 180,y = 80,width = 100,height = 30)
button_4 = tk.Button(window,text = '暂停',command = pauseMusic)
button_4.place(x = 30,y = 140,width = 100,height = 30)
button_5 = tk.Button(window,text = '继续',command = continueMusic)
button_5.place(x = 180,y = 140,width = 100,height = 30)
button_6 = tk.Button(window,text = '升高音量',command = soundAdd)
button_6.place(x = 30,y = 200,width = 100,height = 30)
button_7 = tk.Button(window,text = '降低音量',command = soundReduce)
button_7.place(x = 180,y = 200,width = 100,height = 30)
button_8 = tk.Button(window,text = '单曲循环',command = singleMusic)
button_8.place(x = 30,y = 260,width = 100,height = 30)
button_9 = tk.Button(window,text = '退出',command = quitMusic)
button_9.place(x = 180,y = 260,width = 100,height = 30)
window.mainloop()