# -*- coding: utf-8 -*-

"""
    Main script including controller, rooting, dependancy management, and
    server run.
"""

import os
import hashlib

from datetime import datetime, timedelta

from src import settings, setup_path, Paste

setup_path()

from bottle import (Bottle, route, run, abort,
                    static_file, debug, view, request)


app = Bottle()


@app.route('/')
@view('home')
def index():
    return {}


@app.route('/paste/create', method='POST')
def create_paste():

    try:
        content = unicode(request.forms.get('content', ''), 'utf8')
    except UnicodeDecodeError:
        return {'status': 'error',
                'message': u"Encoding error: the paste couldn't be saved."}

    if content:
        expiration = request.forms.get('expiration', u'burn_after_reading')
        paste = Paste(expiration=expiration, content=content)
        paste.save()
        return {'status': 'ok',
                'paste': paste.uuid}

    return {'status': 'error',
            'message': u"Serveur error: the paste couldn't be saved. Please try later."}


@app.route('/paste/:paste_id')
@view('paste')
def display_paste(paste_id):

    now = datetime.now()
    keep_alive = False
    try:
        paste = Paste.load(paste_id)
        # Delete the paste if it expired:
        if 'burn_after_reading' in str(paste.expiration):
            # burn_after_reading contains the paste creation date
            # if this read appends 10 seconds after the creation date
            # we don't delete the paste because it means it's the redirection
            # to the paste that happens during the paste creation
            try:
                keep_alive = paste.expiration.split('#')[1]
                keep_alive = datetime.strptime(keep_alive,'%Y-%m-%d %H:%M:%S.%f')
                keep_alive = now < keep_alive + timedelta(seconds=10)
            except IndexError:
                keep_alive = False
            if not keep_alive:
                paste.delete()

        elif paste.expiration < now:
            paste.delete()
            raise ValueError()

    except (TypeError, ValueError):
        abort(404, u"This paste doesn't exist or has expired")

    return {'paste': paste, 'keep_alive': keep_alive}


@app.route('/static/<filename:path>')
def server_static(filename):
    return static_file(filename, root=settings.STATIC_FILES_ROOT)


if __name__ == "__main__":
    if settings.DEBUG:
        debug(True)
        run(app, host='localhost', port=8000, reloader=True, server="cherrypy")
    else:
        run(app, host='localhost', port=8000, server="cherrypy")