XPPL/app/views.py

"""
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, light
from flask import Flask, Response, session, render_template, request, redirect, url_for, flash, send_from_directory, jsonify, abort
import json
from functools import wraps
import os
from  sqlalchemy.sql.expression import func, select
from sqlalchemy.sql import except_
from sqlalchemy.ext.serializer import loads, dumps
# from app.forms import UploadForm, EditForm, SearchForm, ChatForm, StackForm, AddtoStackForm, EditStackForm
from app.forms import UploadText, UploadAudio
from app.models import Location, LocationSchema
from app.cover import get_cover
from app.getannot import get_annotations, get_annot_results, get_annot_book
from urllib.parse import quote as urlquote
from app.extractText import extract_text
from os import environ
from flask_socketio import SocketIO, emit
from datetime import datetime
import time
from csv import DictWriter, DictReader
import io
from sqlalchemy.inspection import inspect
import sys
from werkzeug.utils import secure_filename

# import sqlite3
ALLOWED_EXTENSIONS = set(['txt', 'pdf', 'epub', 'chm', 'mobi', "png", "mp3"])


location_schema = LocationSchema()
locations_schema = LocationSchema(many=True)


def allowed_file(filename):
    return '.' in filename and \
           filename.rsplit('.', 1)[1].lower() in ALLOWED_EXTENSIONS
###
# Routing for your application.
###

@app.route('/uploads/<filename>')
def uploaded_file(filename):
    return send_from_directory(app.config['UPLOAD_FOLDER'],
                               filename)

@app.route('/', methods= ['POST','GET'])
def home():

    username = 'librarian'
    server = request.host
    if request.environ.get('HTTP_X_FORWARDED_FOR') is None:
        client =request.environ['REMOTE_ADDR']
    else:
        client = request.environ['HTTP_X_FORWARDED_FOR']

    locations = db.session.query(Location).all()
    serialized = [location_schema.dump(location) for location in locations]
    print(locations)


    return render_template('home.html',domain=DOMAIN, server=server, locations = locations, data_locations = serialized)

@app.route('/hello/<name>')
def hello(name):
    return "Hello " + name



@app.route('/addlocation', methods=['POST', 'GET'])
def add_location():
    if request.method == 'POST':
        data = request.get_json()
        print("UPDATING DATA")
        print(data['longitude'])
        location = Location(data['longitude'],data['latitude'], "mosquito", "", "")
        db.session.add(location)
        db.session.commit()
        return redirect(url_for('home'))



@app.route('/addtext', methods=['POST', 'GET'])
def addtext():
    upload_form = UploadText()
    longitude = request.args.get('longitude')
    latitude = request.args.get('latitude')
    print(longitude)
    print(latitude)

    if request.method == 'POST':
        if upload_form.validate_on_submit():
            #get data from form
            message = upload_form.message.data
            longitude = upload_form.longitude.data
            latitude = upload_form.latitude.data
            location = Location(longitude,latitude, "message", message, "");
            db.session.add(location)
            db.session.commit()
            return redirect(url_for('home'))
    return render_template('addtext.html', form=upload_form, longitude=longitude, latitude=latitude)

@app.route('/addaudio', methods=['POST', 'GET'])
def addaudio():
    upload_form = UploadAudio()
    if request.method == 'GET':
        longitude = request.args.get('longitude')
        latitude = request.args.get('latitude')

    if request.method == 'POST':
        if upload_form.validate_on_submit():
            #get data from form
            message = upload_form.message.data
            longitude = upload_form.longitude.data
            latitude = upload_form.latitude.data
            file = request.files['file']
            print(file.filename)
            locations = db.session.query(Location).all()
            id = len(locations)+1
            # Getting the current date and time
            dt = datetime.now()
            # getting the timestamp
            ts = datetime.timestamp(dt)
            filename = str(id) + "_" + str(ts) +"_"+ secure_filename(file.filename)
            fullpath = os.path.join(app.config['UPLOAD_FOLDER'], filename)
            file.save(fullpath)
            #add to database
            location = Location(longitude,latitude, "audio", message, filename);
            db.session.add(location)
            db.session.commit()
            return redirect(url_for('home'))
    return render_template('addaudio.html', form=upload_form, longitude=longitude, latitude=latitude)




@app.route('/location/<int:id>/delete', methods=['POST', 'GET'])
def delete_location(id):
    if request.method == 'GET':
        Location.query.filter_by(id=id).delete()
        db.session.commit()
        return redirect(url_for('home'))


@app.route('/books/<int:id>')
def show_book_by_id(id):
    book = Book.query.get(id)
    all_instances = db.session.query(Instance).all()
    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

    name= book.file
    annot = get_annotations()
    res = get_annot_book(annot,name)



    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, light=light)
    else:
        return render_template('show_book_detail.html', book=book, previousbook = previousbook, nextbook = nextbook, all_instances=all_instances, name=name, annot=annot, res=res, light=light)




@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
            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)

                    extract_text(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= 'default_cover.gif'
                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');

            book = Book(title, filename, cover, file_extension, category, year_published, message, sameness, diversity, gender, who)
            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)
            i = Instance(request.host, "add")
            existing_ip = db.session.query(Instance).filter_by(ip=request.host).first()
            if existing_ip:
                i.name = existing_ip.name
            book.instances.append(i)
            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, light=light)


# 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
            ))



if __name__ == '__main__':
    # socketio.run(app)
    app.run(debug=True,host="0.0.0.0",port="8080")