ui.py

#!/usr/bin/env python
# -*- coding: utf-8 -*-
# @Author: omi
# @Date:   2014-08-24 21:51:57
'''
网易云音乐 Ui
'''
from __future__ import division
from __future__ import unicode_literals
from __future__ import print_function
from __future__ import absolute_import
from builtins import range
from builtins import str
from builtins import int
from future import standard_library
standard_library.install_aliases()
import hashlib
import re
import curses

from .api import NetEase
from .scrollstring import truelen, scrollstring
from .storage import Storage
from .config import Config
from .utils import notify
from . import logger
from . import terminalsize

log = logger.getLogger(__name__)

try:
    import dbus
    dbus_activity = True
except ImportError:
    dbus_activity = False
    log.warn('Qt dbus module is not installed.')
    log.warn('Osdlyrics is not available.')


def break_str(s, start, max_len=80):
    l = len(s)
    i, x = 0, max_len
    res = []
    while i < l:
        res.append(s[i:i + max_len])
        i += x
    return '\n{}'.format(' ' * start).join(res)


class Ui(object):

    def __init__(self):
        self.screen = curses.initscr()
        self.screen.timeout(100)  # the screen refresh every 100ms
        # charactor break buffer
        curses.cbreak()
        self.screen.keypad(1)
        self.netease = NetEase()

        curses.start_color()
        if Config().get_item('curses_transparency'):
            curses.use_default_colors()
            curses.init_pair(1, curses.COLOR_GREEN, -1)
            curses.init_pair(2, curses.COLOR_CYAN, -1)
            curses.init_pair(3, curses.COLOR_RED, -1)
            curses.init_pair(4, curses.COLOR_YELLOW, -1)
        else:
            curses.init_pair(1, curses.COLOR_GREEN, curses.COLOR_BLACK)
            curses.init_pair(2, curses.COLOR_CYAN, curses.COLOR_BLACK)
            curses.init_pair(3, curses.COLOR_RED, curses.COLOR_BLACK)
            curses.init_pair(4, curses.COLOR_YELLOW, curses.COLOR_BLACK)
        # term resize handling
        size = terminalsize.get_terminal_size()
        self.x = max(size[0], 10)
        self.y = max(size[1], 25)
        self.startcol = int(float(self.x) / 5)
        self.indented_startcol = max(self.startcol - 3, 0)
        self.update_space()
        self.lyric = ''
        self.now_lyric = ''
        self.post_lyric = ''
        self.now_lyric_index = 0
        self.tlyric = ''
        self.storage = Storage()
        self.config = Config()
        self.newversion = False

    def addstr(self, *args):
        if len(args) == 1:
            self.screen.addstr(args[0])
        else:
            self.screen.addstr(args[0], args[1], args[2].encode('utf-8'), *args[3:])

    def notify(self, summary, song, album, artist):
        if summary != 'disable':
            body = '%s\nin %s by %s' % (song, album, artist)
            content = summary + ': ' + body
            notify(content)

    def build_playinfo(self,
                       song_name,
                       artist,
                       album_name,
                       quality,
                       start,
                       pause=False):
        curses.noecho()
        # refresh top 2 line
        self.screen.move(1, 1)
        self.screen.clrtoeol()
        self.screen.move(2, 1)
        self.screen.clrtoeol()
        if pause:
            self.addstr(1, self.indented_startcol,
                        '_ _ z Z Z ' + quality, curses.color_pair(3))
        else:
            self.addstr(1, self.indented_startcol,
                        '♫  ♪ ♫  ♪ ' + quality, curses.color_pair(3))

        self.addstr(
            1, min(self.indented_startcol + 18, self.x - 1),
            song_name + self.space + artist + '  < ' + album_name + ' >',
            curses.color_pair(4))

        self.screen.refresh()

    def build_process_bar(self, now_playing, total_length, playing_flag,
                          pause_flag, playing_mode):
        if (self.storage.database['player_info']['idx'] >=
                len(self.storage.database['player_info']['player_list'])):
            return
        curses.noecho()
        self.screen.move(3, 1)
        self.screen.clrtoeol()
        self.screen.move(4, 1)
        self.screen.clrtoeol()
        self.screen.move(5, 1)
        self.screen.clrtoeol()
        if not playing_flag:
            return
        if total_length <= 0:
            total_length = 1
        if now_playing > total_length or now_playing <= 0:
            now_playing = 0
        if now_playing == 0:
            self.now_lyric_index = 0
            self.now_lyric = ''
            self.post_lyric = ''
        process = '['
        for i in range(0, 33):
            if i < now_playing / total_length * 33:
                if (i + 1) > now_playing / total_length * 33:
                    if not pause_flag:
                        process += '>'
                        continue
                process += '='
            else:
                process += ' '
        process += '] '
        now_minute = int(now_playing / 60)
        if now_minute > 9:
            now_minute = str(now_minute)
        else:
            now_minute = '0' + str(now_minute)
        now_second = int(now_playing - int(now_playing / 60) * 60)
        if now_second > 9:
            now_second = str(now_second)
        else:
            now_second = '0' + str(now_second)
        total_minute = int(total_length / 60)
        if total_minute > 9:
            total_minute = str(total_minute)
        else:
            total_minute = '0' + str(total_minute)
        total_second = int(total_length - int(total_length / 60) * 60)
        if total_second > 9:
            total_second = str(total_second)
        else:
            total_second = '0' + str(total_second)
        process += '(' + now_minute + ':' + now_second + '/' + total_minute + ':' + total_second + ')'  # NOQA
        if playing_mode == 0:
            process = '顺序播放 ' + process
        elif playing_mode == 1:
            process = '顺序循环 ' + process
        elif playing_mode == 2:
            process = '单曲循环 ' + process
        elif playing_mode == 3:
            process = '随机播放 ' + process
        elif playing_mode == 4:
            process = '随机循环 ' + process
        else:
            pass
        self.addstr(3, self.startcol - 2, process, curses.color_pair(1))
        song = self.storage.database['songs'][
            self.storage.database['player_info']['player_list'][
                self.storage.database['player_info']['idx']]]
        if 'lyric' not in song.keys() or len(song['lyric']) <= 0:
            self.now_lyric = '暂无歌词 ~>_<~ \n'
            self.post_lyric = ''
            if dbus_activity and self.config.get_item('osdlyrics'):
                self.now_playing = song['song_name'] + ' - ' + song[
                    'artist'] + '\n'

        else:
            key = now_minute + ':' + now_second
            index = 0
            for line in song['lyric']:
                if key in line:
                    # 计算下一句歌词，判断刷新时的歌词和上一次是否相同来进行index计算
                    if not (self.now_lyric == re.sub('\[.*?\]', '', line)):
                        self.now_lyric_index = self.now_lyric_index + 1
                    if index < len(song['lyric']) - 1 :
                        self.post_lyric = song['lyric'][index + 1]
                    else:
                        self.post_lyric = ''
                    if 'tlyric' not in song.keys() or len(song['tlyric']) <= 0:
                        self.now_lyric = line
                    else:
                        self.now_lyric = line
                        for tline in song['tlyric']:
                            if key in tline and self.config.get_item(
                                    'translation'):
                                self.now_lyric = tline + ' || ' + self.now_lyric  # NOQA
                                if not (self.post_lyric == ''):
                                    self.post_lyric = tline + ' || ' + self.post_lyric
                                #此处已经拿到，直接break即可
                                break
                    #此处已经拿到，直接break即可
                    break
                index += 1
        self.now_lyric = re.sub('\[.*?\]', '', self.now_lyric)
        self.post_lyric = re.sub('\[.*?\]', '', self.post_lyric)
        if dbus_activity and self.config.get_item('osdlyrics'):
            try:
                bus = dbus.SessionBus().get_object('org.musicbox.Bus', '/')
                #TODO 环境问题，没有试过桌面歌词，此处需要了解的人加个刷界面操作
                if self.now_lyric == '暂无歌词 ~>_<~ \n':
                    bus.refresh_lyrics(self.now_playing,
                                       dbus_interface='local.musicbox.Lyrics')
                else:
                    bus.refresh_lyrics(self.now_lyric,
                                       dbus_interface='local.musicbox.Lyrics')
            except Exception as e:
                log.error(e)
                pass
        #根据索引计算双行歌词的显示，其中当前歌词颜色为红色，下一句歌词颜色为白色；
        # 当前歌词从下一句歌词刷新颜色变换，所以当前歌词和下一句歌词位置会交替
        if self.now_lyric_index % 2 == 0:
            self.addstr(4, self.startcol - 2, str(self.now_lyric),
                        curses.color_pair(3))
            self.addstr(5, self.startcol + 1, str(self.post_lyric),
                        curses.A_DIM)
        else:
            self.addstr(4, self.startcol - 2, str(self.post_lyric),
                        curses.A_DIM)
            self.addstr(5, self.startcol + 1, str(self.now_lyric),
                        curses.color_pair(3))
        self.screen.refresh()

    def build_loading(self):
        self.addstr(7, self.startcol, '享受高品质音乐，loading...',
                    curses.color_pair(1))
        self.screen.refresh()

    # start is the timestamp of this function being called
    def build_menu(self, datatype, title, datalist, offset, index, step,
                   start):
        # keep playing info in line 1
        curses.noecho()
        self.screen.move(7, 1)
        self.screen.clrtobot()
        self.addstr(7, self.startcol, title, curses.color_pair(1))

        if len(datalist) == 0:
            self.addstr(8, self.startcol, '这里什么都没有 -，-')

        else:
            if datatype == 'main':
                for i in range(offset, min(len(datalist), offset + step)):
                    if i == index:
                        self.addstr(i - offset + 9,
                                    self.indented_startcol,
                                    '-> ' + str(i) + '. ' + datalist[i],
                                    curses.color_pair(2))
                    else:
                        self.addstr(i - offset + 9, self.startcol,
                                    str(i) + '. ' + datalist[i])

            elif datatype == 'songs' or datatype == 'fmsongs':
                iter_range = min(len(datalist), offset + step)
                for i in range(offset, iter_range):
                    # this item is focus
                    if i == index:
                        self.addstr(i - offset + 8, 0,
                                    ' ' * self.startcol)
                        lead = '-> ' + str(i) + '. '
                        self.addstr(i - offset + 8,
                                    self.indented_startcol, lead,
                                    curses.color_pair(2))
                        name = '{}{}{}  < {} >'.format(
                            datalist[i]['song_name'], self.space,
                            datalist[i]['artist'], datalist[i]['album_name'])

                        # the length decides whether to scoll
                        if truelen(name) < self.x - self.startcol - 1:
                            self.addstr(
                                i - offset + 8,
                                self.indented_startcol + len(lead), name,
                                curses.color_pair(2))
                        else:
                            name = scrollstring(name + '  ', start)
                            self.addstr(
                                i - offset + 8,
                                self.indented_startcol + len(lead), str(name),
                                curses.color_pair(2))
                    else:
                        self.addstr(i - offset + 8, 0,
                                    ' ' * self.startcol)
                        self.addstr(
                            i - offset + 8, self.startcol,
                            '{}. {}{}{}  < {} >'.format(
                                i, datalist[i]['song_name'], self.space,
                                datalist[i]['artist'],
                                datalist[i]['album_name'])[:int(self.x * 2)])

                self.addstr(iter_range - offset + 8, 0, ' ' * self.x)

            elif datatype == 'comments':
                # 被选中的评论在最下方显示全部字符，其余评论仅显示一行
                for i in range(offset, min(len(datalist), offset + step)):
                    maxlength = min(int(1.8 * self.startcol), len(datalist[i]))
                    if i == index:
                        try:
                            self.addstr(
                                20, self.indented_startcol,
                                '-> ' + str(i) + '. ' +
                                break_str(datalist[i], self.indented_startcol, maxlength),
                                curses.color_pair(2))
                        except:
                            self.addstr(
                                20, self.indented_startcol,
                                '-> ' + str(i) + '. ' + 'This comment is invalid',
                                curses.color_pair(2))
                    else:
                        self.addstr(
                            i - offset + 9, self.startcol,
                            str(i) + '. ' + datalist[i][:maxlength])

            elif datatype == 'artists':
                for i in range(offset, min(len(datalist), offset + step)):
                    if i == index:
                        self.addstr(
                            i - offset + 9, self.indented_startcol,
                            '-> ' + str(i) + '. ' + datalist[i]['artists_name'] +
                            self.space + str(datalist[i]['alias']),
                            curses.color_pair(2))
                    else:
                        self.addstr(
                            i - offset + 9, self.startcol,
                            str(i) + '. ' + datalist[i]['artists_name'] +
                            self.space + datalist[i][
                                'alias'])

            elif datatype == 'artist_info':
                for i in range(offset, min(len(datalist), offset + step)):
                    if i == index:
                        self.addstr(
                            i - offset + 9, self.indented_startcol,
                            '-> ' + str(i) + '. ' + datalist[i]['item'],
                            curses.color_pair(2))
                    else:
                        self.addstr(
                            i - offset + 9, self.startcol,
                            str(i) + '. ' + datalist[i]['item'])

            elif datatype == 'albums':
                for i in range(offset, min(len(datalist), offset + step)):
                    if i == index:
                        self.addstr(
                            i - offset + 9, self.indented_startcol,
                            '-> ' + str(i) + '. ' + datalist[i]['albums_name'] +
                            self.space + datalist[i]['artists_name'], curses.color_pair(2))
                    else:
                        self.addstr(
                            i - offset + 9, self.startcol,
                            str(i) + '. ' + datalist[i]['albums_name'] +
                            self.space + datalist[i][
                                'artists_name'])

            elif datatype == 'playlists':
                for i in range(offset, min(len(datalist), offset + step)):
                    if i == index:
                        self.addstr(
                            i - offset + 9, self.indented_startcol,
                            '-> ' + str(i) + '. ' + datalist[i]['title'],
                            curses.color_pair(2))
                    else:
                        self.addstr(
                            i - offset + 9, self.startcol,
                            str(i) + '. ' + datalist[i]['title'])

            elif datatype == 'top_playlists':
                for i in range(offset, min(len(datalist), offset + step)):
                    if i == index:
                        self.addstr(
                            i - offset + 9, self.indented_startcol, '-> ' +
                            str(i) + '. ' + datalist[i]['playlists_name'] +
                            self.space + datalist[i]['creator_name'],
                            curses.color_pair(2))
                    else:
                        self.addstr(
                            i - offset + 9, self.startcol,
                            str(i) + '. ' + datalist[i]['playlists_name'] +
                            self.space + datalist[i][
                                'creator_name'])

            elif datatype == 'toplists':
                for i in range(offset, min(len(datalist), offset + step)):
                    if i == index:
                        self.addstr(i - offset + 9,
                                    self.indented_startcol,
                                    '-> ' + str(i) + '. ' + datalist[i],
                                    curses.color_pair(2))
                    else:
                        self.addstr(i - offset + 9, self.startcol,
                                    str(i) + '. ' + datalist[i])

            elif datatype in ('playlist_classes', 'playlist_class_detail'):
                for i in range(offset, min(len(datalist), offset + step)):
                    if i == index:
                        self.addstr(i - offset + 9,
                                    self.indented_startcol,
                                    '-> ' + str(i) + '. ' + datalist[i],
                                    curses.color_pair(2))
                    else:
                        self.addstr(i - offset + 9, self.startcol,
                                    str(i) + '. ' + datalist[i])

            elif datatype == 'djchannels':
                for i in range(offset, min(len(datalist), offset + step)):
                    if i == index:
                        self.addstr(
                            i - offset + 8, self.indented_startcol,
                            '-> ' + str(i) + '. ' + datalist[i]['song_name'],
                            curses.color_pair(2))
                    else:
                        self.addstr(
                            i - offset + 8, self.startcol,
                            str(i) + '. ' + datalist[i]['song_name'])

            elif datatype == 'search':
                self.screen.move(6, 1)
                self.screen.clrtobot()
                self.screen.timeout(-1)
                self.addstr(8, self.startcol, '选择搜索类型:',
                            curses.color_pair(1))
                for i in range(offset, min(len(datalist), offset + step)):
                    if i == index:
                        self.addstr(
                            i - offset + 10, self.indented_startcol,
                            '-> ' + str(i) + '.' + datalist[i - 1],
                            curses.color_pair(2))
                    else:
                        self.addstr(i - offset + 10, self.startcol,
                                    str(i) + '.' + datalist[i - 1])
                self.screen.timeout(100)

            elif datatype == 'help':
                for i in range(offset, min(len(datalist), offset + step)):
                    if i == index:
                        self.addstr(
                            i - offset + 9, self.indented_startcol,
                            '-> {}. \'{}{}   {}'.format(
                                i, (datalist[i][0] + '\'').ljust(11),
                                datalist[i][1], datalist[i][2]),
                            curses.color_pair(2))
                    else:
                        self.addstr(
                            i - offset + 9, self.startcol,
                            '{}. \'{}{}   {}'.format(
                                i, (datalist[i][0] + '\'').ljust(11),
                                datalist[i][1], datalist[i][2]))

                self.addstr(
                    20, 6, 'NetEase-MusicBox 基于Python，所有版权音乐来源于网易，本地不做任何保存')
                self.addstr(21, 10,
                            '按 [G] 到 Github 了解更多信息，帮助改进，或者Star表示支持~~')
                self.addstr(22, self.startcol,
                            'Build with love to music by omi')

        self.screen.refresh()

    def build_search(self, stype):
        self.screen.timeout(-1)
        netease = self.netease
        if stype == 'songs':
            song_name = self.get_param('搜索歌曲：')
            if song_name == '/return':
                return []
            else:
                try:
                    data = netease.search(song_name, stype=1)
                    song_ids = []
                    if 'songs' in data['result']:
                        if 'mp3Url' in data['result']['songs']:
                            songs = data['result']['songs']

                        # if search song result do not has mp3Url
                        # send ids to get mp3Url
                        else:
                            for i in range(0, len(data['result']['songs'])):
                                song_ids.append(data['result']['songs'][i][
                                    'id'])
                            songs = netease.songs_detail(song_ids)
                        return netease.dig_info(songs, 'songs')
                except Exception as e:
                    log.error(e)
                    return []

        elif stype == 'artists':
            artist_name = self.get_param('搜索艺术家：')
            if artist_name == '/return':
                return []
            else:
                try:
                    data = netease.search(artist_name, stype=100)
                    if 'artists' in data['result']:
                        artists = data['result']['artists']
                        return netease.dig_info(artists, 'artists')
                except Exception as e:
                    log.error(e)
                    return []

        elif stype == 'albums':
            albums_name = self.get_param('搜索专辑：')
            if albums_name == '/return':
                return []
            else:
                try:
                    data = netease.search(albums_name, stype=10)
                    if 'albums' in data['result']:
                        albums = data['result']['albums']
                        return netease.dig_info(albums, 'albums')
                except Exception as e:
                    log.error(e)
                    return []

        elif stype == 'search_playlist':
            search_playlist = self.get_param('搜索网易精选集：')
            if search_playlist == '/return':
                return []
            else:
                try:
                    data = netease.search(search_playlist, stype=1000)
                    if 'playlists' in data['result']:
                        playlists = data['result']['playlists']
                        return netease.dig_info(playlists, 'top_playlists')
                except Exception as e:
                    log.error(e)
                    return []

        return []

    def build_login(self):
        self.build_login_bar()
        local_account = self.get_account()
        local_password = hashlib.md5(self.get_password().encode('utf-8')).hexdigest()
        login_info = self.netease.login(local_account, local_password)
        account = [local_account, local_password]
        if login_info['code'] != 200:
            x = self.build_login_error()
            if x == ord('1'):
                return self.build_login()
            else:
                return -1
        else:
            return [login_info, account]

    def build_login_bar(self):
        curses.noecho()
        self.screen.move(4, 1)
        self.screen.clrtobot()
        self.addstr(5, self.startcol, '请输入登录信息(支持手机登陆)',
                    curses.color_pair(1))
        self.addstr(8, self.startcol, '账号:', curses.color_pair(1))
        self.addstr(9, self.startcol, '密码:', curses.color_pair(1))
        self.screen.move(8, 24)
        self.screen.refresh()

    def build_login_error(self):
        self.screen.move(4, 1)
        self.screen.timeout(-1)  # disable the screen timeout
        self.screen.clrtobot()
        self.addstr(8, self.startcol, '艾玛，登录信息好像不对呢 (O_O)#',
                    curses.color_pair(1))
        self.addstr(10, self.startcol, '[1] 再试一次')
        self.addstr(11, self.startcol, '[2] 稍后再试')
        self.addstr(14, self.startcol, '请键入对应数字:', curses.color_pair(2))
        self.screen.refresh()
        x = self.screen.getch()
        self.screen.timeout(100)  # restore the screen timeout
        return x

    def build_timing(self):
        self.screen.move(6, 1)
        self.screen.clrtobot()
        self.screen.timeout(-1)
        self.addstr(8, self.startcol, '输入定时时间(min):',
                    curses.color_pair(1))
        self.addstr(11, self.startcol, 'ps:定时时间为整数，输入0代表取消定时退出',
                    curses.color_pair(1))
        self.screen.timeout(-1)  # disable the screen timeout
        curses.echo()
        timing_time = self.screen.getstr(8, self.startcol + 19, 60)
        self.screen.timeout(100)  # restore the screen timeout
        return timing_time

    def get_account(self):
        self.screen.timeout(-1)  # disable the screen timeout
        curses.echo()
        account = self.screen.getstr(8, self.startcol + 6, 60)
        self.screen.timeout(100)  # restore the screen timeout
        return account.decode('utf-8')

    def get_password(self):
        self.screen.timeout(-1)  # disable the screen timeout
        curses.noecho()
        password = self.screen.getstr(9, self.startcol + 6, 60)
        self.screen.timeout(100)  # restore the screen timeout
        return password.decode('utf-8')

    def get_param(self, prompt_string):
        # keep playing info in line 1
        curses.echo()
        self.screen.move(4, 1)
        self.screen.clrtobot()
        self.addstr(5, self.startcol, prompt_string,
                    curses.color_pair(1))
        self.screen.refresh()
        info = self.screen.getstr(10, self.startcol, 60)
        if info == '':
            return '/return'
        elif info.strip() is '':
            return self.get_param(prompt_string)
        else:
            return info

    def update_size(self):
        # get terminal size
        size = terminalsize.get_terminal_size()
        x = max(size[0], 10)
        y = max(size[1], 25)
        if (x, y) == (self.x, self.y): # no need to resize
            return
        self.x, self.y = x, y

        # update intendations
        curses.resizeterm(self.y, self.x)
        self.startcol = int(float(self.x) / 5)
        self.indented_startcol = max(self.startcol - 3, 0)
        self.update_space()
        self.screen.clear()
        self.screen.refresh()

    def update_space(self):
        if self.x > 140:
            self.space = '   -   '
        elif self.x > 80:
            self.space = '  -  '
        else:
            self.space = ' - '
        self.screen.refresh()