#! /usr/bin/python3
# -*- coding: utf-8 -*-
###########################################################################
# Copyright 2019 (C) Hui Lan <hui.lan@cantab.net>
# Written permission must be obtained from the author for commercial uses.
###########################################################################
from WordFreq import WordFreq
from wordfreqCMD import youdao_link, sort_in_descending_order
from UseSqlite import InsertQuery, RecordQuery
import pickle_idea, pickle_idea2
import os
import random, glob
from datetime import datetime
from flask import Flask, request, redirect, render_template, url_for, session, abort, flash
from difficulty import get_difficulty_level, text_difficulty_level, user_difficulty_level
app = Flask(__name__)
app.secret_key = 'lunch.time!'
path_prefix = '/var/www/wordfreq/wordfreq/'
path_prefix = './' # comment this line in deployment
def get_random_image(path):
img_path = random.choice(glob.glob(os.path.join(path, '*.jpg')))
return img_path[img_path.rfind('/static'):]
def get_random_ads():
ads = random.choice(['个性化分析精准提升', '你的专有单词本', '智能捕捉阅读弱点，针对性提高你的阅读水平'])
return ads + '。 <a href="/signup">试试</a>吧！'
def load_freq_history(path):
d = {}
if os.path.exists(path):
d = pickle_idea.load_record(path)
return d
def verify_user(username, password):
rq = RecordQuery(path_prefix + 'static/wordfreqapp.db')
rq.instructions_with_parameters("SELECT * FROM user WHERE name=? AND password=?", (username, password))
rq.do_with_parameters()
result = rq.get_results()
return result != []
def add_user(username, password):
start_date = datetime.now().strftime('%Y%m%d')
expiry_date = '20211230'
rq = InsertQuery(path_prefix + 'static/wordfreqapp.db')
rq.instructions("INSERT INTO user Values ('%s', '%s', '%s', '%s')" % (username, password, start_date, expiry_date))
rq.do()
def check_username_availability(username):
rq = RecordQuery(path_prefix + 'static/wordfreqapp.db')
rq.instructions("SELECT * FROM user WHERE name='%s'" % (username))
rq.do()
result = rq.get_results()
return result == []
def get_expiry_date(username):
rq = RecordQuery(path_prefix + 'static/wordfreqapp.db')
rq.instructions("SELECT expiry_date FROM user WHERE name='%s'" % (username))
rq.do()
result = rq.get_results()
if len(result) > 0:
return result[0]['expiry_date']
else:
return '20191024'
def within_range(x, y, r):
return x > y and abs(x - y) <= r
def get_today_article(user_word_list, articleID):
rq = RecordQuery(path_prefix + 'static/wordfreqapp.db')
if articleID == None:
rq.instructions("SELECT * FROM article")
else:
rq.instructions('SELECT * FROM article WHERE article_id=%d' % (articleID))
rq.do()
result = rq.get_results()
# Choose article according to reader's level
d1 = load_freq_history(path_prefix + 'static/frequency/frequency.p')
d2 = load_freq_history(path_prefix + 'static/words_and_tests.p')
d3 = get_difficulty_level(d1, d2)
d = {}
d_user = load_freq_history(user_word_list)
user_level = user_difficulty_level(d_user, d3) # more consideration as user's behaviour is dynamic. Time factor should be considered.
random.shuffle(result) # shuffle list
d = random.choice(result)
text_level = text_difficulty_level(d['text'], d3)
if articleID == None:
for reading in result:
text_level = text_difficulty_level(reading['text'], d3)
#print('TEXT_LEVEL %4.2f' % (text_level))
if within_range(text_level, user_level, 0.5):
d = reading
break
s = '<p><i>According to your word list, your level is <b>%4.2f</b> and we have chosen an article with a difficulty level of <b>%4.2f</b> for you.</i></p>' % (user_level, text_level)
s += '<p><b>%s</b></p>' % (d['date'])
s += '<p><font size=+2>%s</font></p>' % (d['text'])
s += '<p><i>%s</i></p>' % (d['source'])
s += '<p><b>%s</b></p>' % (get_question_part(d['question']))
s = s.replace('\n', '<br/>')
s += '%s' % (get_answer_part(d['question']))
session['articleID'] = d['article_id']
return s
def appears_in_test(word, d):
if not word in d:
return ''
else:
return ','.join(d[word])
def get_time():
return datetime.now().strftime('%Y%m%d%H%M') # upper to minutes
def get_question_part(s):
s = s.strip()
result = []
flag = 0
for line in s.split('\n'):
line = line.strip()
if line == 'QUESTION':
result.append(line)
flag = 1
elif line == 'ANSWER':
flag = 0
elif flag == 1:
result.append(line)
return '\n'.join(result)
def get_answer_part(s):
s = s.strip()
result = []
flag = 0
for line in s.split('\n'):
line = line.strip()
if line == 'ANSWER':
flag = 1
elif flag == 1:
result.append(line)
# https://css-tricks.com/snippets/javascript/showhide-element/
js = '''
<script type="text/javascript">
function toggle_visibility(id) {
var e = document.getElementById(id);
if(e.style.display == 'block')
e.style.display = 'none';
else
e.style.display = 'block';
}
</script>
'''
html_code = js
html_code += '\n'
html_code += '<button onclick="toggle_visibility(\'answer\');">ANSWER</button>\n'
html_code += '<div id="answer" style="display:none;">%s</div>\n' % ('\n'.join(result))
return html_code
@app.route("/<username>/reset", methods=['GET', 'POST'])
def user_reset(username):
if request.method == 'GET':
session['articleID'] = None
return redirect(url_for('userpage', username=username))
else:
return 'Under construction'
@app.route("/mark", methods=['GET', 'POST'])
def mark_word():
if request.method == 'POST':
d = load_freq_history(path_prefix + 'static/frequency/frequency.p')
lst_history = pickle_idea.dict2lst(d)
lst = []
for word in request.form.getlist('marked'):
lst.append((word, 1))
d = pickle_idea.merge_frequency(lst, lst_history)
pickle_idea.save_frequency_to_pickle(d, path_prefix + 'static/frequency/frequency.p')
return redirect(url_for('mainpage'))
else:
return 'Under construction'
@app.route("/", methods=['GET', 'POST'])
def mainpage():
if request.method == 'POST': # when we submit a form
content = request.form['content']
f = WordFreq(content)
lst = f.get_freq()
page = '<form method="post" action="/mark">\n'
count = 1
for x in lst:
page += '<p><font color="grey">%d</font>: <a href="%s">%s</a> (%d) <input type="checkbox" name="marked" value="%s"></p>\n' % (count, youdao_link(x[0]), x[0], x[1], x[0])
count += 1
page += ' <input type="submit" value="确定并返回"/>\n'
page += '</form>\n'
# save history
d = load_freq_history(path_prefix + 'static/frequency/frequency.p')
lst_history = pickle_idea.dict2lst(d)
d = pickle_idea.merge_frequency(lst, lst_history)
pickle_idea.save_frequency_to_pickle(d, path_prefix + 'static/frequency/frequency.p')
return page
elif request.method == 'GET': # when we load a html page
page = '''
<html lang="zh">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0, minimum-scale=0.5, maximum-scale=3.0, user-scalable=yes" />
<title>EnglishPal 英文单词高效记</title>
</head>
<body>
'''
page += '<p><b><font size="+3" color="red">English Pal - Learn English in a smart way!</font></b></p>'
if session.get('logged_in'):
page += ' <a href="%s">%s</a></p>\n' % (session['username'], session['username'])
else:
page += '<p><a href="/login">登录</a> <a href="/signup">成为会员</a> <a href="/static/usr/instructions.html">使用说明</a></p>\n'
#page += '<p><img src="%s" width="400px" alt="advertisement"/></p>' % (get_random_image(path_prefix + 'static/img/'))
page += '<p><b>%s</b></p>' % (get_random_ads())
page += '<p>粘帖1篇文章 (English only)</p>'
page += '<form method="post" action="/">'
page += ' <textarea name="content" rows="10" cols="120"></textarea><br/>'
page += ' <input type="submit" value="get文章中的词频"/>'
page += ' <input type="reset" value="清除"/>'
page += '</form>'
d = load_freq_history(path_prefix + 'static/frequency/frequency.p')
if len(d) > 0:
page += '<p><b>最常见的词</b></p>'
for x in sort_in_descending_order(pickle_idea.dict2lst(d)):
if x[1] <= 99:
break
page += '<a href="%s">%s</a> %d\n' % (youdao_link(x[0]), x[0], x[1])
page += '</body></html>'
return page
@app.route("/<username>/mark", methods=['GET', 'POST'])
def user_mark_word(username):
username = session[username]
user_freq_record = path_prefix + 'static/frequency/' + 'frequency_%s.pickle' % (username)
if request.method == 'POST':
d = load_freq_history(user_freq_record)
lst_history = pickle_idea2.dict2lst(d)
lst = []
for word in request.form.getlist('marked'):
lst.append((word, [get_time()]))
d = pickle_idea2.merge_frequency(lst, lst_history)
pickle_idea2.save_frequency_to_pickle(d, user_freq_record)
return redirect(url_for('userpage', username=username))
else:
return 'Under construction'
@app.route("/<username>", methods=['GET', 'POST'])
def userpage(username):
if not session.get('logged_in'):
return '<p>请先<a href="/login">登录</a>。</p>'
user_expiry_date = session.get('expiry_date')
if datetime.now().strftime('%Y%m%d') > user_expiry_date:
return '<p>账号 %s 过期。</p><p>为了提高服务质量，English Pal 收取会员费用， 每天0元。</p> <p>请决定你要试用的时间长度，扫描下面支付宝二维码支付。 支付时请注明<i>English Pal Membership Fee</i>。 我们会于12小时内激活账号。</p><p><img src="static/donate-the-author-hidden.jpg" width="120px" alt="支付宝二维码" /></p><p>如果有问题，请加开发者微信 torontohui。</p> <p><a href="/logout">登出</a></p>' % (username)
username = session.get('username')
user_freq_record = path_prefix + 'static/frequency/' + 'frequency_%s.pickle' % (username)
if request.method == 'POST': # when we submit a form
content = request.form['content']
f = WordFreq(content)
lst = f.get_freq()
page = '<meta charset="UTF8">'
page += '<meta name="viewport" content="width=device-width, initial-scale=1.0, minimum-scale=0.5, maximum-scale=3.0, user-scalable=yes" />'
page += '<p>勾选不认识的单词</p>'
page += '<form method="post" action="/%s/mark">\n' % (username)
page += ' <input type="submit" name="add-btn" value="加入我的生词簿"/>\n'
count = 1
words_tests_dict = pickle_idea.load_record(path_prefix + 'static/words_and_tests.p')
for x in lst:
page += '<p><font color="grey">%d</font>: <a href="%s" title="%s">%s</a> (%d) <input type="checkbox" name="marked" value="%s"></p>\n' % (count, youdao_link(x[0]), appears_in_test(x[0], words_tests_dict), x[0], x[1], x[0])
count += 1
page += '</form>\n'
return page
elif request.method == 'GET': # when we load a html page
page = '<meta charset="UTF8">\n'
page += '<meta name="viewport" content="width=device-width, initial-scale=1.0, minimum-scale=0.5, maximum-scale=3.0, user-scalable=yes" />\n'
page += '<meta name="format-detection" content="telephone=no" />\n' # forbid treating numbers as cell numbers in smart phones
page += '<title>EnglishPal Study Room for %s</title>' % (username)
page += '<p><b>English Pal for <font color="red">%s</font></b> <a href="/logout">登出</a></p>' % (username)
page += '<p><a href="/%s/reset">下一篇</a></p>' % (username)
page += '<p><b>阅读文章并回答问题</b></p>\n'
page += '<div id="text-content">%s</div>' % (get_today_article(user_freq_record, session['articleID']))
page += '<p><b>收集生词吧</b> （可以在正文中划词，也可以复制黏贴）</p>'
page += '<form method="post" action="/%s">' % (username)
page += ' <textarea name="content" id="selected-words" rows="10" cols="120"></textarea><br/>'
page += ' <input type="submit" value="get 所有词的频率"/>'
page += ' <input type="reset" value="清除"/>'
page += '</form>\n'
page += '''
<script>
function getWord(){
var word = window.getSelection?window.getSelection():document.selection.createRange().text;
return word;
}
function fillinWord(){
var element = document.getElementById("selected-words");
element.value = element.value + " " + getWord();
}
document.getElementById("text-content").addEventListener("click", fillinWord, false);
document.getElementById("text-content").addEventListener("touchstart", fillinWord, false);
</script>
'''
d = load_freq_history(user_freq_record)
if len(d) > 0:
page += '<p><b>我的生词簿</b></p>'
lst = pickle_idea2.dict2lst(d)
lst2 = []
for t in lst:
lst2.append((t[0], len(t[1])))
for x in sort_in_descending_order(lst2):
word = x[0]
freq = x[1]
if isinstance(d[word], list): # d[word] is a list of dates
if freq > 1:
page += '<p class="new-word"> <a href="%s">%s</a> (<a title="%s">%d</a>) </p>\n' % (youdao_link(word), word, '; '.join(d[word]), freq)
else:
page += '<p class="new-word"> <a href="%s">%s</a> <font color="white">(<a title="%s">%d</a>)</font> </p>\n' % (youdao_link(word), word, '; '.join(d[word]), freq)
elif isinstance(d[word], int): # d[word] is a frequency. to migrate from old format.
page += '<a href="%s">%s</a>%d\n' % (youdao_link(word), word, freq)
return page
### Sign-up, login, logout ###
@app.route("/signup", methods=['GET', 'POST'])
def signup():
if request.method == 'GET':
return render_template('signup.html')
elif request.method == 'POST':
username = request.form['username']
password = request.form['password']
available = check_username_availability(username)
if not available:
flash('用户名 %s 已经被注册。' % (username))
return render_template('signup.html')
elif len(password.strip()) < 4:
return '密码过于简单。'
else:
add_user(username, password)
verified = verify_user(username, password)
if verified:
session['logged_in'] = True
session[username] = username
session['username'] = username
return '<p>恭喜，你已成功注册， 你的用户名是 <a href="%s">%s</a>。</p>\
<p><a href="/%s">开始使用</a> <a href="/">返回首页</a><p/>' % (username, username, username)
else:
return '用户名密码验证失败。'
@app.route("/login", methods=['GET', 'POST'])
def login():
if request.method == 'GET':
if not session.get('logged_in'):
return render_template('login.html')
else:
return '你已登录 <a href="/%s">%s</a>。 登出点击<a href="/logout">这里</a>。' % (session['username'], session['username'])
elif request.method == 'POST':
# check database and verify user
username = request.form['username']
password = request.form['password']
verified = verify_user(username, password)
if verified:
session['logged_in'] = True
session[username] = username
session['username'] = username
user_expiry_date = get_expiry_date(username)
session['expiry_date'] = user_expiry_date
session['articleID'] = None
return redirect(url_for('userpage', username=username))
else:
return '无法通过验证。'
@app.route("/logout", methods=['GET', 'POST'])
def logout():
session['logged_in'] = False
return redirect(url_for('mainpage'))
if __name__ == '__main__':
#app.secret_key = os.urandom(16)
#app.run(debug=False, port='6000')
app.run(debug=True)
#app.run(debug=True, port='6000')
#app.run(host='0.0.0.0', debug=True, port='6000')