#!/usr/bin/python

# Mouchak Server -

# A Flask Application (http://flask.pocoo.org/)

###############################################################################

# TODO: While moving rendering, routing and controlling to server side, the API

# has to change and improve. The API should be as follows:-

# --

# For Pages

#

# [GET] /mouchak/api/v1a/pages/ - Retrieve list of all the pages

# [GET] /mouchak/api/v1a/pages/<id> - Retrieve specfic page

# [POST] /mouchak/api/v1a/pages - Create a new page, with data in payload

# [PUT] /mouchak/api/v1a/pages/<id> - Update a specific page, with data in

# payload

# [DELETE] /mouchak/api/v1a/pages/<id> - Delete a specific page

# --

#

# For Sitemap (There is only one instance of sitemap in a given website, hence

# the API is quite simple.

#

# [GET] /mouchak/api/v1a/sitemap - Retrieve the sitemap

# [PUT] /mouchak/api/v1a/sitemap - Update the sitemap

###############################################################################

import flask

import pymongo

import bson

import conf

import os

import json

from werkzeug import secure_filename

from datetime import datetime

PLUGIN_UPLOAD_FOLDER = os.path.join(os.path.dirname(os.path.abspath(__file__))

                                    + '/static/user_plugins')

ALLOWED_EXTENSIONS = set(['js', 'css', 'jpg', 'JPG', 'png', 'gif', 'PNG',

                          'svg', 'pdf'])

#ALLOWED_EXTENSIONS = set(['js', 'css'])

FILE_UPLOAD_FOLDER = os.path.join(os.path.dirname(os.path.abspath(__file__)) +

                                  '/static/uploads')

app = flask.Flask(__name__)

dbClient = pymongo.MongoClient()

db = dbClient[conf.DB]

siteContent = db['content']

siteMenu = db['menu']

lastUpdated = db['last_updated']

analytics_coll = db['analytics']

if siteMenu.find_one() == None:

    siteMenu.insert({'customMenu': False, 'menuOrder': [], 'html': ''})

siteFooter = db['footer']

if siteFooter.find_one() == None:

    siteFooter.insert({'html': ''})

siteHeader = db['header']

if siteHeader.find_one() == None:

    siteHeader.insert({'html': ''})

# handy reference to otherwise long name

bson.ObjId = bson.objectid.ObjectId

def getContent():

    content = []

    for i in siteContent.find():

        objId = bson.ObjId(i['_id'])

        del(i['_id'])

        i['id'] = str(objId)

        content.append(i)

    menu = siteMenu.find_one()

    objId = bson.ObjId(menu['_id'])

    del(menu['_id'])

    menu['id'] = str(objId)

    footer = siteFooter.find_one()

    objId = bson.ObjId(footer['_id'])

    del(footer['_id'])

    footer['id'] = str(objId)

    header = siteHeader.find_one()

    objId = bson.ObjId(header['_id'])

    del(header['_id'])

    header['id'] = str(objId)

    last_updated = lastUpdated.find_one()

    last_updated_date = last_updated['last_updated']

    return {'content': content, 'menu': menu, 'footer': footer, 'header':

            header, 'last_updated': last_updated_date.isoformat()}

def allowed_file(filename):

    return '.' in filename and \

            filename.rsplit('.', 1)[1] in ALLOWED_EXTENSIONS

@app.errorhandler(404)

def pageNotFound(e):

    return flask.render_template('404.html'), 404

@app.route('/', methods=['GET'])

def index():

    return flask.render_template('index.html', content=getContent(),

                                 title=conf.SITE_TITLE)

@app.route('/edit', methods=['GET'])

def edit():

    if "logged_in" in flask.session:

        flask.session['key'] = conf.SECRET_KEY

        return flask.render_template('editor.html', content=getContent(),

                                     title=conf.SITE_TITLE)

    else:

        return flask.redirect(flask.url_for('login'))

@app.route('/pages', methods=['GET'])

def listPages():

    # if limit and offset are given as query string params,

    # send pages with that limit starting from the offset

    if flask.request.args.get('limit'):

        content = []

        limit = int(flask.request.args.get('limit'))

        if flask.request.args.get('offset'):

            offset = int(flask.request.args.get('offset'))

        else:

            offset = 0

        for page in siteContent.find().sort('_id', 1)[offset:offset+limit]:

            del(page['_id'])

            content.append(page)

        #print len(content)

        return flask.make_response(json.dumps(content), '200 OK',

                                   {'Content-Type': 'application/json'})

    else:

        content = getContent()['content']

        return flask.make_response(json.dumps(content), '200 OK',

                               {'Content-Type': 'application/json'})

@app.route('/pages/<_id>', methods=['GET'])

def listPage(_id):

    try:

        page = siteContent.find_one({'_id': bson.ObjId(_id)})

        del(page['_id'])

        #print page

        return flask.jsonify(page)

    except:

        return flask.abort(404)

@app.route('/page', methods=['POST'])

def insertPage():

    newpage = flask.request.json

    #print newpage

    res = siteContent.insert(newpage)

    _id = bson.ObjId(res)

    newpage['id'] = str(_id)

    del(newpage['_id'])

    #print newpage

    # FIXME: handle errors

    #return flask.jsonify(status='ok', page=newpage)

    return flask.jsonify(newpage)

@app.route('/page/<_id>', methods=['PUT', 'DELETE'])

def updatePage(_id):

    if flask.request.method == 'PUT':

        changedPage = flask.request.json

        print changedPage

        print '======='

        res = siteContent.update({'_id': bson.ObjId(_id)},

                                changedPage)

        print res

        if res['err'] == None:

            print changedPage

            #return flask.jsonify(status='ok', page=changedPage)

            return flask.jsonify(changedPage)

    elif flask.request.method == 'DELETE':

        delPage = flask.request.url

        print delPage

        print _id

        res = siteContent.remove({'_id': bson.ObjId(_id)})

        print res

        if res['err'] == None:

            return flask.jsonify(status='ok')

        else:

            return flask.jsonify(error=res['err'], status='error')

@app.route('/footer', methods=['POST'])

def insertFooter():

    return '200 OK'

@app.route('/footer/<_id>', methods=['PUT'])

def updateFooter(_id):

    if flask.request.method == 'PUT':

        changedFooter = flask.request.json

        print "changed footer:"

        print changedFooter

        res = siteFooter.update({'_id': bson.ObjId(_id)}, changedFooter)

        print res

        return flask.jsonify(changedFooter)

@app.route('/header', methods=['POST'])

def insertHeader():

    return '200 OK'

@app.route('/header/<_id>', methods=['PUT'])

def updateHeader(_id):

    if flask.request.method == 'PUT':

        changedHeader = flask.request.json

        print "changed header:"

        print changedHeader

        res = siteHeader.update({'_id': bson.ObjId(_id)}, changedHeader)

        print res

        return flask.jsonify(changedHeader)

@app.route('/menu', methods=['POST'])

def insertMenu():

    #newmenu = flask.request.json

    #print newmenu

    #res = siteMenu.insert(newmenu)

    #print res

    #return flask.jsonify(status='success')#, content=getContent())

    return '200 OK'

@app.route('/menu/<_id>', methods=['PUT'])

def updateMenu(_id):

    if flask.request.method == 'PUT':

        changedMenu = flask.request.json

        print "changed menu:"

        print changedMenu

        res = siteMenu.update({'_id': bson.ObjId(_id)}, changedMenu)

        print res

        #return flask.jsonify(status='ok', menu=changedMenu)

        return flask.jsonify(changedMenu)

    #elif flask.request.method == 'DELETE':

    #    delMenu = flask.request.url

    #    print delMenu

    #    print _id

    #    res = siteMenu.remove({'_id': bson.ObjId(_id)})

    #    return flask.jsonify(status='deleted')

# Basic login for one single admin user whose credentials are in conf.py

@app.route('/login', methods=['GET', 'POST'])

def login():

    error = None

    if flask.request.method == 'POST':

        if flask.request.form['username'] != conf.ADMIN_USERNAME:

            error = 'Invalid username'

        elif flask.request.form['password'] != conf.ADMIN_PASSWORD:

            error = 'Invaid password'

        else:

            flask.session['logged_in'] = True

            flask.session['key'] = conf.SECRET_KEY

            flask.flash('You were logged in')

            return flask.redirect(flask.url_for('edit'))

    return flask.render_template('login.html', error=error)

@app.route('/logout')

def logout():

    flask.session.pop('logged_in', None)

    flask.flash('You were logged out')

    return flask.redirect(flask.url_for('login'))

#TODO: refactor these code to classes

#TODO: find out if this is a good method for saving plugins..

@app.route('/static/user_plugins/<filename>', methods=['POST'])

def savePlugin(filename):

    if flask.request.method == 'POST':

        if filename and allowed_file(filename):

            data = flask.request.form['code']

            filename = secure_filename(filename)

            fh = open(os.path.join(PLUGIN_UPLOAD_FOLDER + '/' + filename), 'w')

            fh.write(data)

            fh.close()

            return flask.jsonify(saved = True)

#TODO: find out if this is a good method for uploading plugins..

@app.route('/upload/plugin', methods=['POST'])

def uploadPlugin():

    if flask.request.method == 'POST':

        print flask.request.files

        file = flask.request.files['plugin-file']

        if file and allowed_file(file.filename):

            filename = secure_filename(file.filename)

            file.save(os.path.join(app.config['PLUGIN_UPLOAD_FOLDER'],

                                   filename))

            #return flask.redirect(flask.url_for('uploaded_file',

            #            filename=filename))

            return flask.jsonify(uploaded = True,

                                 path=flask.url_for('static', filename =\

                                                    'user_plugins/'+ filename))

@app.route('/upload', methods=['GET', 'POST'])

def upload():

    if flask.request.method == 'POST':

        print flask.request.files

        file = flask.request.files['upload-file']

        if file and allowed_file(file.filename):

            print 'file ok'

            filename = secure_filename(file.filename)

            file.save(os.path.join(app.config['FILE_UPLOAD_FOLDER'], filename))

            return flask.jsonify(uploaded = True, path =\

                                 flask.url_for('static', filename =\

                                               'uploads/' + filename))

        else:

            resp = flask.make_response()

            print 'file not ok'

            resp.status_code = 400

            return resp

    if flask.request.method == 'GET':

        uploaded_files = os.listdir(app.config['FILE_UPLOAD_FOLDER'])

        print uploaded_files

        return flask.jsonify({'uploaded_files': uploaded_files})

@app.route('/upload/<filename>', methods=['DELETE'])

def removeFile(filename):

    filepath = os.path.join(app.config['FILE_UPLOAD_FOLDER'], filename)

    print filepath

    res = os.remove(filepath)

    print res

    return '200 OK'

# KHMDL needs analytics. So adding analytics to their website.

@app.route('/analytics', methods=['GET', 'POST'])

def analytics():

    response = flask.make_response()

    if flask.request.method == 'GET':

        #TODO: gather analytics data from db and send back a HTML rendering it

        pass

    elif flask.request.method == 'POST':

        if 'type' not in flask.request.form:

            abort(400)

        data = {}

        data['type'] = flask.request.form['type']

        if data['type'] == 'pageview':

            data['page'] = flask.request.form['page']

        analytics_coll.insert(data)

        total_hits = analytics_coll.find({'type': 'pageview'}).count()

    return flask.jsonify(total_hits=total_hits)

@app.route('/updated-content', methods=['POST'])

def updateLastUpdated():

    if "logged_in" not in flask.session:

        abort(403)

    response = flask.make_response()

    last_updated = lastUpdated.find_one()

    if last_updated == None:

        lastUpdated.insert({'last_updated': datetime.utcnow()})

    else:

        lastUpdated.update({'_id': last_updated['_id']},

                                 {'last_updated': datetime.utcnow()})

    response.status_code = 200

    return response

@app.route('/robots.txt')

@app.route('/crossdomain.xml')

def static_from_root():

    return flask.send_from_directory(app.static_folder, request.path[1:])

app.config.from_object(conf)

app.config['PLUGIN_UPLOAD_FOLDER'] = PLUGIN_UPLOAD_FOLDER

app.config['FILE_UPLOAD_FOLDER'] = FILE_UPLOAD_FOLDER

import logging,os

from logging import FileHandler

fil = FileHandler(os.path.join(os.path.dirname(__file__),'logme'),mode='a')

fil.setLevel(logging.ERROR)

app.logger.addHandler(fil)

if __name__ == "__main__":

    app.run(debug=True, host=conf.HOST, port=conf.PORT)