/*############################################################################
#    Web PDF Report Preview & Print
#    Copyright 2014 wangbuke <wangbuke@gmail.com>
#
#    This program is free software: you can redistribute it and/or modify
#    it under the terms of the GNU Affero General Public License as
#    published by the Free Software Foundation, either version 3 of the
#    License, or (at your option) any later version.
#
#    This program is distributed in the hope that it will be useful,
#    but WITHOUT ANY WARRANTY; without even the implied warranty of
#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#    GNU Affero General Public License for more details.
#
#    You should have received a copy of the GNU Affero General Public License
#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
#
############################################################################*/

openerp.web_pdf_preview = function(instance) {
    var wkhtmltopdf_state;

    var trigger_download = function(self, response, c) {
        var params = {
            data: JSON.stringify(response),
            token: new Date().getTime()
        };
        var url = self.session.url('/report/preview', params);
        //window.open('/report/preview?data=' + encodeURIComponent(JSON.stringify(response)) + '&token=' + new Date().getTime() + '&session_id=' + self.session.session_id, 'report', '');
        window.open(url, 'report', '');
        instance.web.unblockUI();
        return;
    }

    instance.web.ActionManager = instance.web.ActionManager.extend({
        ir_actions_report_xml: function(action, options) {
            var self = this;
            instance.web.blockUI();
            action = _.clone(action);
            _t =  instance.web._t;

            // QWeb reports
            if ('report_type' in action && (action.report_type == 'qweb-html' || action.report_type == 'qweb-pdf' || action.report_type == 'controller')) {
                var report_url = '';
                switch (action.report_type) {
                    case 'qweb-html':
                        report_url = '/report/html/' + action.report_name;
                        break;
                    case 'qweb-pdf':
                        report_url = '/report/pdf/' + action.report_name;
                        break;
                    case 'controller':
                        report_url = action.report_file;
                        break;
                    default:
                        report_url = '/report/html/' + action.report_name;
                        break;
                }

                // generic report: no query string
                // particular: query string of action.data.form and context
                if (!('data' in action) || !(action.data)) {
                    if ('active_ids' in action.context) {
                        report_url += "/" + action.context.active_ids.join(',');
                    }
                } else {
                    report_url += "?options=" + encodeURIComponent(JSON.stringify(action.data));
                    report_url += "&context=" + encodeURIComponent(JSON.stringify(action.context));
                }

                var response = new Array();
                response[0] = report_url;
                response[1] = action.report_type;
                var c = openerp.webclient.crashmanager;

                if (action.report_type == 'qweb-html') {
                    window.open(report_url, '_blank', 'scrollbars=1,height=900,width=1280');
                    instance.web.unblockUI();
                } else if (action.report_type === 'qweb-pdf') {
                    // Trigger the download of the pdf/controller report
                    (wkhtmltopdf_state = wkhtmltopdf_state || openerp.session.rpc('/report/check_wkhtmltopdf')).then(function (presence) {
                        // Fallback on html if wkhtmltopdf is not installed or if OpenERP is started with one worker
                        if (presence === 'install') {
                            self.do_notify(_t('Report'), _t('Unable to find Wkhtmltopdf on this \
system. The report will be shown in html.<br><br><a href="http://wkhtmltopdf.org/" target="_blank">\
wkhtmltopdf.org</a>'), true);
                            report_url = report_url.substring(12)
                            window.open('/report/html/' + report_url, '_blank', 'height=768,width=1024');
                            instance.web.unblockUI();
                            return;
                        } else if (presence === 'workers') {
                            self.do_notify(_t('Report'), _t('You need to start OpenERP with at least two \
workers to print a pdf version of the reports.'), true);
                            report_url = report_url.substring(12)
                            window.open('/report/html/' + report_url, '_blank', 'height=768,width=1024');
                            instance.web.unblockUI();
                            return;
                        } else if (presence === 'upgrade') {
                            self.do_notify(_t('Report'), _t('You should upgrade your version of\
 Wkhtmltopdf to at least 0.12.0 in order to get a correct display of headers and footers as well as\
 support for table-breaking between pages.<br><br><a href="http://wkhtmltopdf.org/" \
 target="_blank">wkhtmltopdf.org</a>'), true);
                        }
                        return trigger_download(self, response, c);
                    });
                } else if (action.report_type === 'controller') {
                    return trigger_download(self, response, c);
                }
            } else {
                var params = {
                    action: JSON.stringify(action),
                    token: new Date().getTime()
                };
                var url = self.session.url('/web/report', params);
                window.open(url, 'report', '');
                instance.web.unblockUI();
                return;
            }
        },
    });


};