angular.module('odoo')

.factory('leadsRemoteFactory', function (config, odoo, sqlFactory, leadsStorageFactory, asyncLoop) {
    var server = {};
    var local = {};

    // Retrieve leads data from server
    server.retrieve = function (success, error) {
        config(function (configuration) {
            odoo.read('crm.lead', [['active', '=', true]], configuration, function (leads) {
                success(leads);
            }, function (odooErr) {
                error(odooErr);
            });
        }, function (configErr) {
            error(configErr);
        });
    }

    // Retrieve lead by id
    server.retrieveById = function (id, success, error) {
        config(function (configuration) {
            odoo.read('crm.lead', [['id', '=', id]], configuration, function (response) {
                success(response);
            }, function (odooReadErr) {
                error(odooReadErr)
            });
        }, function (configErr) {
            error(configErr);
        });
    }

    // Update leads remote data
    server.update = function (id, data, success, error) {
        config(function (configuration) {
            odoo.write('crm.lead', id, data, configuration, function (response) {
                success(response);
            }, function (odooWriteErr) {
                error(odooWriteErr);
            });
        }, function (configErr) {
            error(configErr);
        });
    }

    // Remove lead from server
    server.remove = function (id, success, error) {
        config(function (configuration) {
            odoo.unlink('crm.lead', id, configuration, function (response) {
                success(response);
            }, function (odooUnlinkErr) {
                error(odooUnlinkErr);
            });
        }, function (configErr) {
            error(configErr);
        });
    }

    // Create leads on remote data
    server.send = function (data, success, error) {
        config(function (configuration) {
            odoo.create('crm.lead', data, configuration, function (response) {
                success(response);
            }, function (odooCreateErr) {
                error(odooCreateErr);
            });
        }, function (configErr) {
            error(configErr);
        });
    }

    // Select leads from local storage
    local.retrieve = function (contraint, success, error) {
        sqlFactory.selectByConstraint('lead', contraint, function (leads) {
            success(leads);
        }, function (err) {
            error(err);
        });
    }

    // Sync leads data between local and remote storage
    var sync = function (success, error) {
        local.retrieve('remote_id = 0', function (newLeads) {
            console.log(newLeads);
            asyncLoop(newLeads.length, function (loop) {
                var data = newLeads.item(loop.iteration());

                // Avoid odoo server warning message
                delete data.id;
                delete data.remote_id;
                delete data.modified;
                delete data.modifiedDate;
                delete data.priority;

                server.send(data, function (response) {
                    console.log(response);
                    loop.next();
                }, function (sendErr) {
                    loop.break();
                });
            // End loop
            }, function () {
                console.log('New data sended success');

                local.retrieve('remote_id != 0 AND modified = 1', function (modifiedLeads) {
                    asyncLoop(modifiedLeads.length, function (loop) {
                        var localData = modifiedLeads.item(loop.iteration());

                        server.retrieveById(localData.remote_id, function (leads) {
                            if (leads.length == 1) {
                                var remoteData = leads[0];

                                var remoteModifiedDate = new Date(remoteData.__last_update);
                                var localModifiedDate = new Date(localData.modifiedDate);


                                if (localModifiedDate > remoteModifiedDate) {
                                    var id = localData.remote_id;

                                    // Avoid odoo server warning message
                                    delete localData.id;
                                    delete localData.remote_id;
                                    delete localData.modified;
                                    delete localData.modifiedDate;
                                    delete localData.priority;

                                    server.update(id, localData, function (response) {
                                        loop.next();
                                    }, function (updateErr) {
                                        console.log(updateErr);
                                        loop.next();
                                    });
                                } else {
                                    loop.next();
                                }
                            } {
                                loop.next();
                            }
                        }, function (retrieveByIdErr) {
                            console.log(retrieveByIdErr);
                            loop.next();
                        });

                    // End loop
                    }, function () {
                        console.log('Modified data sended success');

                        local.retrieve('remote_id != 0 AND modified = 2', function (deletedLeads) {
                            asyncLoop(deletedLeads.length, function (loop) {
                                var id = deletedLeads.item(loop.iteration()).remote_id;

                                server.remove(id, function (response) {
                                    loop.next();
                                }, function (removeErr) {
                                    console.log(removeErr);
                                    loop.next();
                                });

                            // End loop
                            }, function () {

                                console.log('Remote data deleted success');
                                server.retrieve(function (updatedLeads) {
                                    console.log(updatedLeads);

                                    leadsStorageFactory.removeAll(function () {
                                        console.log('Removed All');

                                        asyncLoop(updatedLeads.length, function (loop) {
                                            var data = updatedLeads[loop.iteration()];

                                            // Set id for save on local database
                                            data.remote_id = data.id;
                                            delete data.id;

                                            leadsStorageFactory.save(data, function (leadId) {
                                                loop.next();
                                            }, function (saveLeadErr) {
                                                console.log(saveLeadErr);
                                                loop.next();
                                            });

                                        // End loop
                                        }, function () {

                                            console.log('Remote data downloaded success');
                                            success(updatedLeads);
                                        });
                                    }, function (removeLeadsErr) {
                                        error(removeLeadsErr);
                                    });
                                }, function (retrieveErr) {
                                    error(retrieveErr);
                                });
                            });
                        }, function (selectErr) {
                            error(selectErr);
                        });
                    });
                }, function (selectErr) {
                    error(selectErr);
                });
            });
        }, function (selectErr) {
            error(selectErr);
        });
    }

    return {
        retrieve: server.retrieve,
        update: server.update,
        send: server.send,
        sync: sync
    }
});