const moment = require('moment');

const { generateService, parseParamsToFindOptions } = require('../../helpers/service.helper');
const userDeviceService = require('./user_device.service');
const notificationDetailService = require('./notification_detail.service');
const pushHelper = require('../../helpers/push.helper');
const models = require('../../core/models');

const extraMethods = {

    createNotification: (data) => {
        return {
            date: data.date,
            title: data.title,
            body: data.body,
            ttl: data.ttl,
            priority: data.priority,
            recipients: data.recipients,
            data: data.data,
            userId: data.userId,
        }
    },

    saveNotification: ({ date, title, body, ttl, priority, recipients, data, userId }) => {
        return models.Notification.create({
            date: moment(date),
            title: title,
            body: body,
            userId: userId,
            ttl: ttl ? ttl : undefined,
            priority: priority ? priority : 'default',
            recipients: recipients,
            data: data,
        });
    },


    sendNotification: (notification, userIds) => {

        console.log('sendNofitication -----------------------------------------------');
        console.log(notification, userIds);

        let getUserDevicesPromise = (userId) => userDeviceService.fetchAll({ params: { userId: userId } }, {}).then(function (result) {
            return new Promise(function (resolve) { resolve(result.rows) });
        });
        let saveNotificationPromise = (notification) => extraMethods.saveNotification(notification);
        let sendNotificationsPromise = (messages) => pushHelper.sendPushMessage(messages);
        let disableUserDevicePromise = (token) => userDeviceService.update({
            params: {
                token: token,
            }
        }, { valid: 0, invalidated: moment() }, {});

        let disableInvalidUserDevicesPromise = (userDevices) => {
            return new Promise(function (resolve) {
                let _userDevices = [];
                userDevices.forEach(async function (userDevice) {
                    if (!userDeviceService.isValidPushToken(userDevice.token)) {
                        await disableUserDevicePromise(userDevice.token);
                    } else {
                        _userDevices.push(userDevice);
                    }
                });

                resolve(_userDevices)
            });
        };

        let disableUserDevicesWithErrorStatus = (messages, tickets) => {
            return new Promise(function (resolve) {
                tickets.forEach(async function (ticket, index) {
                    if ((ticket.status === 'error') && (ticket.details.error === 'DeviceNotRegistered')) {
                        await disableUserDevicePromise(messages[index].to)
                    }
                });
                resolve(true);
            });
        }

        let saveResponseStatusPromise = (messages, tickets) => notificationDetailService.saveNotificationDetails(messages, tickets);


        let buildMessagesPromise = (userDevices) => {
            return new Promise(function (resolve) {
                let messages = [];

                userDevices.forEach(async function (userDevice) {
                    messages.push(pushHelper.createPushMessage({
                        ...notification,
                        userId: userDevice.userId,
                        to: userDevice.token,
                    }));
                });
                resolve(messages)
            });
        };


        let getUserDevicesList = [];

        saveNotificationPromise(notification)
            .then(function (notificationRecord) {
                notification = notificationRecord.toJSON();
                userIds.forEach(function (userId) {
                    getUserDevicesList.push(getUserDevicesPromise(userId));
                });

                return Promise.all(getUserDevicesList)
            }).then(function (userDeviceList) {
                let result = [];
                userDeviceList.forEach(function (elements) {
                    elements.forEach(function (item) {
                        result.push(item)
                    })
                });
                return new Promise(function (resolve) { resolve(result); });
            })
            .then(disableInvalidUserDevicesPromise)
            .then(buildMessagesPromise)
            .then(sendNotificationsPromise)
            .then(function ({ messages, tickets }) {
                let _saveStatus = saveResponseStatusPromise(messages, tickets);
                let _disableDevices = disableUserDevicesWithErrorStatus(messages, tickets);

                return Promise.all([_saveStatus, _disableDevices]);
            })
            .then(function (details) {
                console.log(details);
                return details;
            });
    },



    getNotificationsWithoutReceipt: async () => {

    },

    updateNotificationsWithReceipts: async (receiptIds) => {

        //let receiptIdChunks = expo.chunkPushNotificationReceiptIds(receiptIds);
        //let xxx = await _getPushNotificationsResultAsync(receiptIdChunks);

    }
};

module.exports = generateService(models.Notification, extraMethods);