# -*- coding: utf-8 -*-
from openerp import http
from werkzeug.wrappers import Response
from werkzeug.datastructures import Headers
from gzip import GzipFile
from StringIO import StringIO as IO
import simplejson as json
import helpers as hp
import logging

LOGGER = logging.getLogger(__name__)
GZIP_COMPRESSION_LEVEL = 9

def make_gzip_response(data=None, status=200):
    gzip_buffer = IO()

    with GzipFile(mode='wb', compresslevel=GZIP_COMPRESSION_LEVEL, fileobj=gzip_buffer) as gzip_file:
        gzip_file.write(json.dumps(data))

    value = gzip_buffer.getvalue()
    gzip_buffer.close()

    headers = Headers()
    headers.add('Content-Encoding', 'gzip')
    headers.add('Vary', 'Accept-Encoding')
    headers.add('Content-Length', len(value))

    return Response(value, status=status, headers=headers, content_type='application/json')

class ReportController(http.Controller):

    # HISTORICO DE COMPRAS
    @http.route('/report-purchase-history', auth='user', methods=['GET', 'POST'])
    def getPurchaseHistory(self, **kw):
        return make_gzip_response({
            'invoices': hp.get_account_invoice_purchase(),
            'vouchers': hp.get_account_voucher_supplier(),
        })

    # ANALISIS DE COMPRAS
    @http.route('/report-purchase-analytic', auth='user', methods=['GET', 'POST'])
    def getPurchaseAnalytic(self, **kw):
        return make_gzip_response({
            'invoice_lines': hp.get_account_invoice_line_purchase(),
        })