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import PushNotifications from 'node-pushnotifications'
import debug from 'debug'
const log = debug('sender')
import { deleteSubscribers } from './http'
import { formatMessage, formatTitle, formatQuote } from './common/MessageUtils'
import config from 'config'

let cfg = /** @type { import('node-pushnotifications').Settings } */ (config)

const apnConfig = (production = true) => {
    const apn = {
        ...cfg.apn,
        token: {
            key: cfg.apn?.token?.key || process.env.JUICK_APN_KEY,
            keyId: cfg.apn?.token?.keyId || process.env.JUICK_APN_KEY_ID,
            teamId: cfg.apn?.token?.teamId || process.env.JUICK_APN_TEAM_ID
        },
        production: production
    }
    return apn
}
const fcmConfig = {
    ...cfg.fcm,
    serviceAccountKey: process.env.JUICK_FCM_SERVICE_ACCOUNT_FILE
}

console.log(`fcm config: ${JSON.stringify(fcmConfig)}`)

const push = new PushNotifications({
    ...config,
    apn: apnConfig(true),
    fcm: fcmConfig,
})
const sandbox = new PushNotifications({
    ...config,
    apn: apnConfig(false),
    fcm: fcmConfig
})

/** @type {string} */
const application = config.get('service.application') || process.env.JUICK_APN_APPLICATION || ''

/**
 * send notification
 * @param {PushNotifications.RegistrationId[]} productionIds
 * @param {PushNotifications.RegistrationId[]} sandboxIds
 * @param {PushNotifications.Data} data
 */
export function sendNotification(productionIds, sandboxIds, data) {
    [productionIds, sandboxIds].map((registrationIds, index) => {
        let sender = index == 0 ? push : sandbox
        if (registrationIds && registrationIds.length) {
            sender.send(registrationIds, data)
                .then((results) => {
                    results.forEach(result => {
                        log(`${result.method}: ${result.success} success, ${result.failure} failure`)
                        if (result.failure) {
                            console.error(`${result.method} failure: ${JSON.stringify(result)}`)
                            console.error(`Failed data: ${JSON.stringify(data)}`)
                        }
                    })
                    results.filter(r => r.method === 'apn')
                        .forEach(async r => {
                            let badTokens = r.message.filter(m =>
                                m.errorMsg === 'BadDeviceToken' || m.errorMsg === 'Unregistered').map(m => {
                                    return { 'type': 'apns', 'token': m.regId }
                                })
                            if (badTokens.length > 0) {
                                await deleteSubscribers(badTokens)
                                log(`${badTokens.length} APNS tokens deleted`)
                            }
                        })
                    results.filter(r => r.method === 'gcm')
                        .forEach(async r => {
                            let badTokens = r.message.filter(m =>
                                m.errorMsg === 'NotRegistered' || m.errorMsg === 'MismatchSenderId'
                                || m.errorMsg === 'InvalidRegistration').map(m => {
                                    return { 'type': 'fcm', 'token': m.regId }
                                })
                            if (badTokens.length > 0) {
                                await deleteSubscribers(badTokens)
                                log(`${badTokens.length} GCM tokens deleted`)
                            }
                        })
                    results.filter(r => r.method === 'mpns')
                        .forEach(async r => {
                            let badTokens = r.message.filter(m => m.errorMsg === 'The channel expired.').map(m => {
                                return { 'type': 'mpns', 'token': m.regId }
                            })
                            if (badTokens.length > 0) {
                                await deleteSubscribers(badTokens)
                                log(`${badTokens.length} MPNS tokens deleted`)
                            }
                        })
                    results.filter(r => r.method === 'webPush')
                        .forEach(async r => {
                            let badTokens = r.message.filter(m => m.error && m.error['statusCode'] === 410).map(m => {
                                return { 'type': 'web', 'token': JSON.stringify(m.regId) }
                            })
                            if (badTokens.length > 0) {
                                await deleteSubscribers(badTokens)
                                log(`${badTokens.length} WebPush tokens deleted`)
                            }
                        })
                })
                .catch((err) => { console.error(JSON.stringify(err)) })
        }
    })
}

/**
 * builds notification object
 * @param {import('../client').SecureUser} user user
 * @param {import('../client').Message} msg message
 * @returns {PushNotifications.Data} notification template
 */
export function buildNotification(user, msg) {
    let template = {
        topic: application,
        custom: {
            message: msg
        },
        timeToLive: 0
    }
    const subscriber = { ...user }
    delete subscriber.tokens
    if (msg.service) {
        template.contentAvailable = true
        template.custom.service = true
        template.custom.user = subscriber
    } else {
        const avatar = `https://i.juick.com/a/${msg.user.uid}.png`
        const title = formatTitle(msg)
        const body = `${formatQuote(msg)}\n${formatMessage(msg)}`
        template.custom.mid = msg.mid
        template.custom.rid = msg.rid
        template.custom.uname = msg.user.uname
        template.custom.avatarUrl = avatar
        template.image1src = avatar
        template.text1 = title
        template.text2 = body
        template.title = title
        template.body = body
        //template.badge = user.unreadCount || 0
        template.mutableContent = 1
        template.color = '#3c77aa'
        template.icon = 'ic_notification'
        template.clickAction = 'com.juick.NEW_EVENT_ACTION'
        const tag = msg.mid == 0 ? msg.user.uname : msg.mid
        template.tag = `${tag}`
        template.fcm_notification = {
            title: title,
            body: body,
            channel_id: 'default'
        }
    }
    return template
}