/
mobi.py
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mobi.py
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# -*- coding: utf-8 -*-
"""
Mobi
~~~~~~
"Mobile garage sale" takes the hassle out of buying and selling stuff on-the-go.
"""
from gevent import monkey
monkey.patch_all()
import os, sys
import json, sqlite3
from flask import Flask, render_template, g, request, flash, redirect, url_for, session, Markup
import requests
import config
from flask.ext.socketio import SocketIO, emit, disconnect, join_room, leave_room, send
from flask.ext.login import LoginManager, login_required, login_user, logout_user, current_user
from forms import LoginForm, WishlistSearchForm, InventoryAddForm
from models import User
import hashlib
import geohash
app = Flask(__name__)
lm = LoginManager()
lm.init_app(app)
"""
DB-related
"""
# Load/override default config
app.config.update(dict(
DATABASE=os.path.join(app.root_path, 'mobi.db'),
DEBUG=config.DEBUG,
SECRET_KEY=config.SECRET_KEY
))
socketio = SocketIO(app)
def connect_db():
""" connect to the specific database """
rv = sqlite3.connect(app.config['DATABASE'])
rv.row_factory = sqlite3.Row
return rv
def get_db():
""" open a new database connection if there is none yet for the current application context """
if not hasattr(g, 'sqlite_db'):
g.sqlite_db = connect_db()
return g.sqlite_db
def init_db():
""" initialize the database """
with app.app_context():
db = get_db()
with app.open_resource('schema.sql', mode='r') as f:
db.cursor().executescript(f.read())
db.commit()
@app.teardown_appcontext
def close_db(error):
""" close the database connection """
if hasattr(g, 'sqlite_db'):
g.sqlite_db.close()
"""
View functions
"""
@app.route("/")
@app.route("/<asklocation>")
def index(asklocation=''):
""" show front page """
return render_template('index.html',user=g.user,asklocation=asklocation)
@app.route("/chat")
@login_required
def chat():
""" show chat page """
return render_template('chat.html',user=g.user)
@app.route("/private/<u1>/<u2>/<item>")
@login_required
def chat_pairwise(u1,u2,item):
""" show pairwise chat page """
db = get_db()
cur = db.execute('select itm_name from items where itm_id=?',[item])
result = cur.fetchone()
item_name = None
if len(result) > 0:
item_name = result[0]
else:
return redirect(url_for('chat'))
if g.user.id not in [u1,u2]:
return redirect(url_for('chat'))
pair = [u1,u2]
pair.remove(g.user.id)
otheruser=pair[0]
socketio.emit('response', {'data': g.user.id+' wants to chat with you about '+item_name+'!', 'url':'/private/'+u1+'/'+u2+'/'+item}, room=otheruser, namespace='/personal')
return render_template('chat_pairwise.html',room='|'.join(sorted([u1,u2])),user=g.user,otheruser=otheruser,about_item=item_name)
@app.route("/login", methods=["GET", "POST"])
def login():
db = get_db()
form = LoginForm()
if form.validate_on_submit():
# login and validate the user...
user = User.get(request.form['usr'])
cur = db.execute('select pas from users where usr=?',[request.form['usr']])
user.password = cur.fetchone()[0]
if (user and user.password == hashlib.sha224(request.form['usr']+':'+request.form['pas']).hexdigest()):
login_user(user)
flash("Logged in successfully.", 'success')
return redirect(url_for('index',asklocation='askgeo'))
else:
flash('Username or password incorrect.', 'danger')
return render_template("login.html", user=g.user, form=form)
def require_login():
flash("You must login to view this page!", 'danger')
return redirect(url_for('login'))
@app.route("/logout")
@login_required
def logout():
logout_user()
flash("You have logged out successfully.", 'success')
return redirect(url_for('index'))
@app.route("/settings")
@login_required
def settings():
pass
"""
Geolocation
"""
@app.route("/geolocation/update",methods=["POST"])
@login_required
def update_geolocation():
lat = float(request.form['latitude'])
lon = float(request.form['longitude'])
db = get_db()
print "lat: "+str(lat)
print "lon: "+str(lon)
gh = geohash.encode(lat,lon)[:5]
db.execute("update users set lat=?, lon=?, geohash=? where usr=?",[lat,lon,gh,g.user.id])
db.commit()
return "[]"
def get_user_geohash(userid=None):
if userid is None:
userid = g.user.id
db = get_db()
cur = db.execute("select geohash from users where usr=?",[g.user.id])
gh = cur.fetchone()[0]
return gh
"""
Inventory
"""
@app.route("/inventory",methods=['GET','POST'])
@login_required
def inventory():
db = get_db()
form=InventoryAddForm()
if form.validate_on_submit():
item_name = Markup.escape(request.form['item']) # escape the search term before broadcasting it!
price = Markup.escape(request.form['price'])
db.execute("insert into items (itm_name, usr, prc) values(?, ?, ?);",[item_name,g.user.id, price])
db.commit()
cur = db.execute("select itm_id, itm_name, prc from items where usr=?",[g.user.id])
items = cur.fetchall()
return render_template("inventory.html", user=g.user, items=items, form=form)
@app.route("/inventory/delete/<id>", methods=["GET"])
@login_required
def inventory_delete(id):
id = Markup.escape(id) # escape
db = get_db()
db.execute("delete from items where usr=? and itm_id=?",[g.user.id, id])
db.commit()
return redirect(url_for('inventory'))
@app.route("/wishlist/nearby")
@login_required
def wishlist_nearby():
gh = get_user_geohash()
neighbors = geohash.neighbors(gh)
neighbors.append(gh)
neighborhood = "('"+"','".join(neighbors)+"')"
db = get_db()
cur = db.execute("select I.itm_name, I.prc, U.usr as owner, I.itm_id from items as I join users as U on I.usr=U.usr join (select * from wishlists as WI join users as US on WI.usr = US.usr) as W where U.usr!=? and W.usr=? and I.itm_name like '%'||W.wishstr||'%' and U.geohash in "+neighborhood+";",[g.user.id, g.user.id])
items = cur.fetchall()
return render_template("wishlist_nearby.html", user=g.user, items=items)
@app.route("/wishlist/search/delete/<term>", methods=["GET"])
@login_required
def wishlist_search_delete(term):
term = Markup.escape(term) # escape
db = get_db()
db.execute("delete from wishlists where usr=? and wishstr=?",[g.user.id, term])
db.commit()
return redirect(url_for('wishlist_search'))
@app.route("/wishlist/search", methods=["GET", "POST"])
@login_required
def wishlist_search():
db = get_db()
form=WishlistSearchForm()
if form.validate_on_submit():
term = Markup.escape(request.form['search']) # escape the search term before broadcasting it!
db.execute("insert into wishlists (usr,wishstr) values(?,?)",[g.user.id, term])
db.commit()
cur = db.execute("select wishstr from wishlists where usr=?",[g.user.id])
items = cur.fetchall()
items = [i[0] for i in items]
return render_template("wishlist_search.html", user=g.user, items=items, form=form)
"""
Users and login
"""
@lm.user_loader
def load_user(userid):
return User.get(userid)
lm.unauthorized_handler(require_login)
@app.before_request
def before_request():
g.user = current_user
"""
SocketIO
"""
@socketio.on('message', namespace='/thechat')
def send_message(message):
if current_user.is_authenticated():
escaped_message = Markup.escape(message['data']) # escape the message before broadcasting it!
emit('response',{'data': escaped_message, 'user': current_user.id},broadcast=True)
else:
disconnect()
@socketio.on('disconnect request', namespace='/thechat')
def disconnect_request():
emit('response',{'data': 'You have been disconnected.', 'user': 'system'})
disconnect()
@socketio.on('connect', namespace='/thechat')
def thechat_connect():
if current_user.is_authenticated():
emit('response', {'data': 'You are now connected.', 'user': 'system'})
else:
disconnect()
@socketio.on('disconnect', namespace='/thechat')
def thechat_disconnect():
print('The client has disconnected.')
# Private rooms
@socketio.on('connect', namespace='/private')
def private_connect():
if current_user.is_authenticated():
emit('response', {'data': 'You are now connected.', 'user': 'system'})
else:
disconnect()
@socketio.on('disconnect', namespace='/private')
def private_disconnect():
print('The client has disconnected.')
@socketio.on('join', namespace='/private')
def private_on_join(data):
username = current_user.id
room = data['room']
if username in room.split('|'):
join_room(room)
send(username + ' has entered the room.', room=room)
@socketio.on('leave', namespace='/private')
def private_on_leave(data):
username = current_user.id
room = data['room']
if username in room.split('|'):
leave_room(room)
send(username + ' has left the room.', room=room)
@socketio.on('message', namespace='/private')
def private_send_message(message):
username = current_user.id
room = message['room']
if current_user.is_authenticated() and username in room.split('|'):
escaped_message = Markup.escape(message['data']) # escape the message before broadcasting it!
emit('response',{'data': escaped_message, 'user': current_user.id},room=message['room'], broadcast=True)
else:
disconnect()
"""
Personal
"""
@socketio.on('connect', namespace='/personal')
def personal_connect():
if current_user.is_authenticated():
#emit('response', {'data': 'You are now connected.', 'user': 'system'})
join_room(current_user.id)
else:
disconnect()
@socketio.on('disconnect', namespace='/personal')
def personal_disconnect():
print('The client has disconnected.')
# if this module is called directly, run the app
if __name__ == "__main__":
socketio.run(app)