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Python

"""
Flask Documentation: http://flask.pocoo.org/docs/
Jinja2 Documentation: http://jinja.pocoo.org/2/documentation/
Werkzeug Documentation: http://werkzeug.pocoo.org/documentation/
This file creates your application.
"""
from app import app, db, socketio, DOMAIN
from flask import Flask, Response, render_template, request, redirect, url_for, flash, send_from_directory, jsonify, abort
import json
from sqlalchemy.sql.expression import func, select
from sqlalchemy.sql import except_
from app.forms import UploadForm, EditForm, SearchForm, ChatForm, StackForm, AddtoStackForm, EditStackForm
from app.models import Book, BookSchema, Author, AuthorSchema, Stack, StackSchema, UserIns, Chat, ChatSchema, Potential
from app.cover import get_cover
from os import environ
from flask_socketio import SocketIO, emit
from weasyprint import HTML
import datetime
import time
import autocomplete
import sys
import os
from werkzeug.utils import secure_filename
# import sqlite3
ALLOWED_EXTENSIONS = set(['txt', 'pdf', 'epub', 'chm', 'mobi'])
author_schema = AuthorSchema()
authors_schema = AuthorSchema(many=True)
book_schema = BookSchema()
books_schema = BookSchema(many=True)
stack_schema = StackSchema()
stacks_schema = StackSchema(many=True)
chat_schema = ChatSchema()
chats_schema = ChatSchema(many=True)
def allowed_file(filename):
return '.' in filename and \
filename.rsplit('.', 1)[1].lower() in ALLOWED_EXTENSIONS
###
# Routing for your application.
###
@app.route('/', methods= ['POST','GET'])
def home():
chat_form = ChatForm()
chat_messages = db.session.query(Chat).all()
username = 'librarian'
# if request.method == 'POST':
# if chat_form.validate_on_submit():
# message = chat_form.message.data
# msg = Chat(message)
# db.session.add(msg)
# db.session.commit()
return render_template('home.html',domain=DOMAIN,chat=chat_messages, channel = 1, username=username)
@app.route('/hello/<name>')
def hello(name):
return "Hello " + name
@app.route('/about/')
def about():
"""Render the website's about page."""
return render_template('about.html', name="Mary Jane")
@app.route('/uploads/<filename>')
def uploaded_file(filename):
return send_from_directory(app.config['UPLOAD_FOLDER'],
filename)
@app.route('/uploads/cover/<filename>')
def uploaded_file_cover(filename):
return send_from_directory(app.config['UPLOAD_FOLDER_COVER'],
filename)
@app.route('/updates', methods=['POST', 'GET'])
def get_updates():
userin = UserIns.query.filter_by(title="lastViewed").first()
allbooks = db.session.query(Book).all()
id = len(allbooks)
latest_upload = allbooks[-1]
return "This is the XPPL ~ Library XPUB ~ Updates / / / / / / / Last viewed: " + userin.info + " / / / / / / / " + str(len(allbooks)) + " Books online "+ " / / / / / / / " + "Latest upload: " + latest_upload.title
@app.route('/scape', methods=['POST', 'GET'])
def scape():
if request.method == 'POST':
data = request.form
book = Book.query.get(data['id'])
print(book.scapeX)
book.scapeX = data['x']
book.scapeY = data['y']
db.session.commit()
books = db.session.query(Book).all() # or you could have used User.query.all()
return render_template('scape.html', books=books)
@app.route('/books_grid')
def show_books_grid():
books = db.session.query(Book).all() # or you could have used User.query.all()
return render_template('show_books_grid.html', books=books)
@app.route('/books/<int:id>')
def show_book_by_id(id):
book = Book.query.get(id)
previousbook = Book.query.filter_by(id=id - 1).first()
nextbook = Book.query.filter_by(id=id + 1).first()
allbooks = db.session.query(Book).all()
edge = len(allbooks)
if id == 1:
previousbook = None
if id == edge:
nextbook = None
userin = UserIns.query.filter_by(title="lastViewed").first()
if userin != None:
userin.info = book.title
db.session.commit()
else:
user_info = UserIns("lastViewed", book.title)
db.session.add(user_info)
db.session.commit()
if not book:
return render_template('red_link.html', id=id)
else:
return render_template('show_book_detail.html', book=book, previousbook = previousbook, nextbook = nextbook)
@app.route('/books/<int:id>/delete', methods=['POST', 'GET'])
def remove_book_by_id(id):
book_to_edit = Book.query.filter_by(id=id).first()
title = book_to_edit.title
Book.query.filter_by(id=id).delete()
#author_table = Author.query.filter_by(book_id=book_to_edit.id).delete()
db.session.commit()
flash("%s deleted from library" % (title))
return redirect(url_for('show_books'))
@app.route('/books/<int:id>/edit', methods=['POST', 'GET'])
def edit_book_by_id(id):
book_to_edit = Book.query.filter_by(id=id).first()
user_form = EditForm(title = book_to_edit.title, author =book_to_edit.authors, category = book_to_edit.category, year_published= book_to_edit.year_published, message= book_to_edit.message)
if request.method == 'POST':
if user_form.validate_on_submit():
# on submit, check fields
title = user_form.title.data
input_authors = user_form.author.data
category = user_form.category.data
year_published = user_form.year_published.data
message = user_form.message.data
if year_published=="":
year_published = None
book = Book.query.filter_by(id=id).first()
book.title = title
book.category = category
book.year_published = year_published
book.message = message
#authors update
book.authors.clear()
for i, author in enumerate(input_authors):
author_name = author.get("author_name")
if author_name:
a = db.session.query(Author).filter_by(author_name=author_name).first()
if a == None:
a = Author(author_name=author_name)
db.session.add(a)
book.authors.append(a)
# editing / uploading new file
if user_form.file.data:
file = request.files['file']
if file.filename == '':
flash('No selected file')
return redirect(request.url)
if file and allowed_file(file.filename):
allbooks = db.session.query(Book).all()
id = book.id
filename = str(id) + "_" + secure_filename(file.filename)
fullpath = os.path.join(app.config['UPLOAD_FOLDER'], filename)
name, file_extension = os.path.splitext(filename)
file.save(fullpath)
book.cover = get_cover(fullpath, name)
book.file = filename
else:
flash('allowed file formats: %s' % ALLOWED_EXTENSIONS)
db.session.commit()
flash("%s updated" % (title))
return redirect(url_for('show_book_by_id', id=id))
return render_template('edit_book_detail.html', book=book_to_edit, form=user_form)
@app.route('/add-book', methods=['POST', 'GET'])
def add_book():
upload_form = UploadForm()
allbooks = db.session.query(Book).all()
books_all = len(allbooks)
allauthors = db.session.query(Author).all()
authors_all = len(allauthors)
stacks_all = [s.stack_name for s in db.session.query(Stack.stack_name)]
categories = [r.category for r in db.session.query(Book.category).distinct()]
allpotential = db.session.query(Book).filter(Book.file.contains('potential.pdf')).all()
books_potential = len(allpotential)
earliest = db.session.query(func.min(Book.year_published)).scalar()
latest = db.session.query(func.max(Book.year_published)).scalar()
if request.method == 'POST':
if upload_form.validate_on_submit():
#get data from form
title = upload_form.title.data
authors = upload_form.author.data
category = upload_form.category.data
message = upload_form.message.data
year_published = upload_form.year_published.data
sameness = upload_form.sameness.data
gender = upload_form.gender.data
diversity = upload_form.diversity.data
time = upload_form.time.data
who = upload_form.who.data
if year_published=="":
year_published = None
#if upload with file
if upload_form.upload.data:
# check if the post request has the file part
if 'file' not in request.files:
flash('No file part')
return redirect(request.url)
file = request.files['file']
# if user does not select file, browser also
# submit a empty part without filename
if file.filename == '':
flash('No selected file')
return redirect(request.url)
if file and allowed_file(file.filename):
allbooks = db.session.query(Book).all()
id = len(allbooks)+1
filename = str(id) + "_" + secure_filename(file.filename)
fullpath = os.path.join(app.config['UPLOAD_FOLDER'], filename)
name, file_extension = os.path.splitext(filename)
file.save(fullpath)
cover = get_cover(fullpath, name)
else:
flash('allowed file formats: %s' % ALLOWED_EXTENSIONS)
#if upload without file -> wishform, with potential PDF
if upload_form.wish.data:
#pdf generator
filename = 'potential.pdf'
file_extension = '.pdf'
cover= ''
ptitle = upload_form.title.data
pbook = Potential(ptitle)
db.session.add(pbook)
db.session.commit()
pbooks = Potential.query.all()
template = 'app/templates/potential_pdf.html'
html_string = render_template('potential_pdf.html', pbooks = pbooks)
html = HTML(string=html_string)
html.write_pdf(target='app/uploads/potential.pdf');
print ('potential_pdf')
book = Book(title, filename, cover, file_extension, category, year_published, message, sameness, diversity, gender, who, time)
db.session.add(book)
for author in authors:
author_name = author.get("author_name")
if author_name:
a = db.session.query(Author).filter_by(author_name=author_name).first()
if a == None:
a = Author(author_name=author_name)
db.session.add(a)
book.authors.append(a)
db.session.commit()
flash("%s added to the library" % (title))
return redirect(url_for('show_books'))
flash_errors(upload_form)
return render_template('add_book.html', form=upload_form, books_all=books_all, authors_all=authors_all, categories=categories, stacks_all=stacks_all, books_potential=books_potential, earliest=earliest, latest=latest)
# Flash errors from the form if validation fails
def flash_errors(form):
for field, errors in form.errors.items():
for error in errors:
flash(u"Error in the %s field - %s" % (
getattr(form, field).label.text,
error
))
#Authors
@app.route('/authors/<int:id>')
def show_author_by_id(id):
author = Author.query.get(id)
if not author:
abort (404)
else:
return render_template('show_author_detail.html', author=author)
@app.route('/authors/<int:id>/edit', methods=['POST', 'GET'])
def edit_author_by_id(id):
return "Ask the programmer."
##stacks
@app.route('/stacks')
def show_stacks():
stacks = db.session.query(Stack).all()
return render_template('show_stacks.html', stacks=stacks)
@app.route('/stacks/add_stack', methods=['POST', 'GET'])
def add_stack():
form = StackForm()
stacks = db.session.query(Stack).all()
if form.validate_on_submit():
stack_name = form.stack_name.data
stack_description = form.stack_description.data
stack_author = form.stack_author.data
stack = Stack(stack_name, stack_description, stack_author)
if form.stack_name.data:
stack = Stack(stack_name, stack_description, stack_author)
db.session.add(stack)
stacks = db.session.query(Stack).all()
return redirect(url_for('show_stacks'))
flash("%s stack created" % (stack_name))
return render_template('add_stack.html', stacks=stacks, form=form)
@app.route('/stacks/tab/<int:id>', methods=['POST', 'GET'])
def show_stack_in_tab(id):
return show_stack_by_id(id, is_tab=True)
@app.route('/stacks/<int:id>', methods=['POST', 'GET'])
def show_stack_by_id(id, is_tab=False):
stack = Stack.query.get(id)
if not stack:
abort (404)
else:
if is_tab == False:
return render_template('show_stack_detail.html', stack=stack)
else:
return render_template('show_stack_detail_tab.html', stack=stack)
@app.route('/stacks/<int:id>/delete', methods=['POST', 'GET'])
def remove_stack_by_id(id):
Stack.query.filter_by(id=id).delete()
db.session.commit()
return redirect(url_for('show_stacks'))
@app.route('/stacks/<int:id>/edit', methods=['POST', 'GET'])
def edit_stack_by_id(id):
stack = Stack.query.filter_by(id=id).first()
form = EditStackForm(edit_stack_name = stack.stack_name, edit_stack_description = stack.stack_description)
if request.method == 'POST':
if form.validate_on_submit():
stack_name = form.edit_stack_name.data
stack_description = form.edit_stack_description.data
stack.stack_name = stack_name
stack.stack_description = stack_description
db.session.commit()
return redirect(url_for('show_stack_by_id', id=id))
return render_template('edit_stack_detail.html', stack=stack, form=form)
@app.route('/stacks/<int:stackid>/remove/<int:bookid>', methods=['POST', 'GET'])
def remove_from_stack(bookid, stackid):
book = Book.query.get(bookid)
stack = Stack.query.get(stackid)
if book not in stack.books:
return render_template('show_book_detail.html', book=book)
stack.books.remove(book)
db.session.commit()
return render_template('show_book_detail.html', book=book)
## search
view = ['1']
@app.route('/books', methods= ['POST','GET'])
def show_books():
books = db.session.query(Book).order_by(Book.title)
search = SearchForm(request.form)
view.append('1')
viewby = '1'
if search.grid.data:
viewby = '2'
view.append('2')
return render_template ('show_books_grid.html', books=books, form=search)
if search.listview.data:
viewby = '1'
view.append('1')
return render_template ('show_books.html', books=books, form=search)
if request.method == 'POST':
newmsg = 'searched for: ' + search.search.data
socketio.emit('channel-' + str(1), {
'username': 'Search form',
'text': search.search.data,
'time': str(datetime.datetime.utcnow().strftime("%d.%m.%Y %H:%M"))}, broadcast=True)
# Save message
my_new_chat = Chat(message=newmsg)
db.session.add(my_new_chat)
try:
db.session.commit()
except:
db.session.rollback()
return redirect((url_for('search_results', searchtype=search.select.data, query=search.search.data, viewby=viewby)))
return render_template('show_books.html', books=books, form=search)
@app.route('/search/<searchtype>/<viewby>/<query>', methods=['POST', 'GET'])
def search_results(searchtype, query, viewby):
search = SearchForm(request.form, search=query)
results=Book.query.filter(Book.title.contains(query)).order_by(Book.title)
allbooks = set(Book.query.all())
viewby = view[-1]
if searchtype == 'Title':
results=Book.query.filter(Book.title.contains(query)).order_by(Book.title)
if searchtype == 'Category':
results=Book.query.filter(Book.category.contains(query)).order_by(Book.title)
if searchtype== 'Author':
results=db.session.query(Book).join(Book.authors).filter(Author.author_name.contains(query)).order_by(Book.title)
if searchtype== 'Stack':
results=db.session.query(Book).join(Book.stacks).filter(Stack.stack_name.contains(query)).order_by(Book.title)
if searchtype== 'All':
# results=Book.query.whoosh_search(query)
results=Book.query.filter(Book.title.contains(query))
results=results.union(Book.query.filter(Book.category.contains(query)))
results=results.union(Book.query.filter(Book.year_published.contains(query)))
results=results.union(db.session.query(Book).join(Book.authors).filter(Author.author_name.contains(query)))
results=results.union(db.session.query(Book).join(Book.stacks).filter(Stack.stack_name.contains(query)))
results=results.union(db.session.query(Book).join(Book.stacks).filter(Stack.stack_description.contains(query))).order_by(Book.title)
if results.count() == 0:
books = Book.query.filter(Book.file.like('potential.pdf'))
upload_form = UploadForm(title= query, author='')
return render_template('red_link.html', form=upload_form, title=query, books=books)
count = results.count()
whole = Book.query.count()
percentage = float(count / whole * 100)
fbooks = set(results)
books_all = allbooks - fbooks
if search.listview.data:
view.append('1')
return render_template('results.html', books=results, form=search, query=query, books_all=books_all, searchtype=search.select.data, count = count, whole = whole, percentage = percentage)
if search.grid.data:
view.append('2')
return render_template('results_grid.html', books=results, form=search, query=query, books_all=books_all, searchtype=search.select.data, count = count, whole = whole, percentage = percentage)
if request.method == 'POST':
newmsg = 'searched for: ' + search.search.data
socketio.emit('channel-' + str(1), {
'username': 'Search form',
'text': search.search.data,
'time': str(datetime.datetime.utcnow().strftime("%d.%m.%Y %H:%M"))}, broadcast=True)
# Save message
my_new_chat = Chat(message=newmsg)
db.session.add(my_new_chat)
try:
db.session.commit()
except:
db.session.rollback()
query = search.search.data
results = []
if viewby == '1':
print (view[-1])
return redirect((url_for('search_results', searchtype=search.select.data, query=search.search.data, viewby=viewby)))
else:
return redirect((url_for('search_results', searchtype=search.select.data, query=search.search.data, viewby=viewby)))
if viewby == '2':
return render_template('results_grid.html', form=search, books=results, books_all=books_all, searchtype=search.select.data, query=query, count = count, whole = whole, percentage = percentage)
else:
return render_template('results.html', form=search, books=results, books_all=books_all, searchtype=search.select.data, query=query, count = count, whole = whole, percentage = percentage)
# ## Search - autocomplete
# autocomplete_suggestions = []
# @app.route('/autocomplete_suggestions', methods=['GET', 'POST'])
# def test1():
# if request.method == 'POST':
# autocomplete.load()
# query = request.form['search']
# query_tokenized = query.lower().split()
# print(query_tokenized)
# word_1 = query_tokenized[-2]
# word_2 = query_tokenized[-1]
# #print(word_1)
# autocomplete_output = autocomplete.predict(word_1 , word_2)
# autocomplete_suggestions.clear()
# for suggestion, score in autocomplete_output:
# autocomplete_suggestions.append(suggestion)
# print(autocomplete_suggestions)
# return Response(json.dumps(autocomplete_suggestions), mimetype='application/json')
@app.route('/add_to_stack/<int:id>', methods=['GET', 'POST'])
def add_to_stack(id):
stacks = db.session.query(Stack).all()
add_form = AddtoStackForm(request.form)
add_form.select_stack.choices = [(stack.id, stack.stack_name) for stack in stacks]
if request.method == 'GET':
book = Book.query.get(id)
return render_template('add_to_stacks.html', id=id, stacks=stacks, book=book, add_form=add_form)
else:
stack = Stack.query.get(int(add_form.select_stack.data))
book = Book.query.get(id)
stack.books.append(book)
db.session.commit()
return render_template('show_stack_detail.html', stack=stack)
from csv import DictWriter
import io
@app.route('/export/csv', methods=['GET'])
def export_csv ():
output = io.StringIO()
fieldnames = ['title', 'authors']
csv = DictWriter(output,fieldnames)
csv.writeheader()
# for i in range(10):
# csv.writerow({'ID': i, 'fruit': "Tomato"})
for book in Book.query.order_by("title"):
authors = ", ".join([x.author_name for x in book.authors])
csv.writerow({"title": book.title, "authors": authors})
resp = Response(output.getvalue(), mimetype="text/plain")
# resp.headers["Content-Disposition"] = "attachment;filename=export.csv"
return resp
###
# The API
###
@app.route('/api/books', methods=['GET'])
def get_books():
books = Book.query.all()
data = books_schema.dump(books)
#print(errors)
return jsonify({'books': data})
@app.route('/api/books/<int:id>', methods=['GET'])
def get_book_by_id(id):
book = Book.query.get(id)
data = book_schema.dump(book)
if not data:
return jsonify({"message": "Book could not be found."}), 400
else:
return jsonify({'book': data })
@app.route('/api/chats', methods=['GET'])
def get_chat():
chats = Chat.query.all()
data = chats_schema.dump(chats)
#print(errors)
return jsonify({'chat': data})
###
# The functions below should be applicable to all Flask apps.
###
@app.route('/<file_name>.txt')
def send_text_file(file_name):
"""Send your static text file."""
file_dot_text = file_name + '.txt'
return app.send_static_file(file_dot_text)
@app.after_request
def add_header(response):
"""
Add headers to both force latest IE rendering engine or Chrome Frame,
and also to cache the rendered page for 10 minutes.
"""
response.headers['X-UA-Compatible'] = 'IE=Edge,chrome=1'
response.headers['Cache-Control'] = 'public, max-age=600'
return response
@app.errorhandler(404)
def page_not_found(error):
"""Custom 404 page."""
return render_template('404.html'), 404
@socketio.on('new_message')
def new_message(message):
# Send message to alls users
print("new message")
emit('channel-' + str(message['channel']), {
'username': message['username'],
'text': message['text'],
'time': str(datetime.datetime.utcnow().strftime("%d.%m.%Y %H:%M"))
},
broadcast=True
)
# Save message
my_new_chat = Chat(
message=message['text']
)
db.session.add(my_new_chat)
try:
db.session.commit()
except:
db.session.rollback()
if __name__ == '__main__':
socketio.run(app)
#app.run(debug=True,host="0.0.0.0",port="8080")