var push = (function(){
  var push = { settings: {}, disabled: false }
  // var pushPlugin
  push.init = function(){
    if (! ('device' in window) || (device.platform || "").toLowerCase() !== "ios") {
      console.log("push disabled")
      push.disabled = true
      return
    }

    console.log("push init")

    // Register handlers
    FirebasePlugin.onMessageReceived(function(message) {
      try {
        console.log("onMessageReceived")
        console.dir(message)
        if (message.messageType === "notification") {
          push.got_push_notification(message)
        }
      } catch(e) {
        console.error("Exception in onMessageReceived callback: " + e.message)
      }
    }, function(error) {
      console.error("Failed receiving FirebasePlugin message", error);
    })

    checkNotificationPermission(false) // Check permission then get token
    FirebasePlugin.setBadgeNumber(0)
  }

  var checkNotificationPermission = function(requested) {
    FirebasePlugin.hasPermission(function(hasPermission) {
      if (hasPermission) {
        // Granted
        console.log("Remote notifications permission granted")
        push.disabled = false
        getAPNSToken()
      } else if (!requested) {
        // Request permission
        console.log("Requesting remote notifications permission")
        FirebasePlugin.grantPermission(checkNotificationPermission.bind(this, true))
      } else {
        // Denied
        push.disabled = true
        console.error("Notifications won't be shown as permission is denied")
      }
    })
  }

  var getAPNSToken = function() {
    FirebasePlugin.getAPNSToken(function(token) {
      console.log("Got APNS token: " + token)
      if (!token) {
        console.log("Token is null, probably in simulator")
        return
      }
      push.did_initialize()
      push.got_registration(token)
    }, function(error) {
      console.error("Failed to get APNS token", error)
    })
  }

  push.did_initialize = function() {
    console.log("push did initialize")
    var hub_status = localStorage.getItem("yoox.push_hub")
    var store_status = localStorage.getItem("yoox.push_store")
    
    push.settings.requested = localStorage.getItem("yoox.push_requested") == "true"
    push.settings.hub = hub_status == "true"
    push.settings.store = store_status == "true"
  }

  push.got_registration = function(registrationId){
    var oldRegistrationId = localStorage.getItem("yoox.registrationId")
    if (registrationId !== oldRegistrationId || ! push.settings.requested) {
      localStorage.setItem("yoox.push_requested", "true")
      localStorage.setItem("yoox.registrationId", registrationId)
      push.settings.requested = true
      push.subscribe("hub")
      push.subscribe("store")
    }
  }

  push.subscribe = function(channel, cb){
    if (push.disabled) return
    push.settings[channel] = true
    localStorage.setItem("yoox.push_" + channel, "true")
    var data = {
      registrationId: localStorage.getItem("yoox.registrationId"),
      channel: channel,
      platform: device.platform,
    }
    FirebasePlugin.subscribe(channel, function(){
      console.log("Subscribed to topic")
    }, function(error){
      console.error("Error subscribing to topic: " + error)
    })
    $.ajax({
      method: "POST",
      url: push.url('add'),
      data: data,
      contentType: 'application/x-www-form-urlencoded; charset=UTF-8',
      success: function(){
        console.log("subscribed to", channel)
        cb && cb()
      },
      error: push.error,
    })
  }
  push.unsubscribe = function(channel, cb){
    if (push.disabled) return
    push.settings[channel] = false
    localStorage.setItem("yoox.push_" + channel, "false")
    var data = {
      registrationId: localStorage.getItem("yoox.registrationId"),
      channel: channel,
      platform: device.platform,
    }
    FirebasePlugin.unsubscribe(channel, function(){
        console.log("Unsubscribed from topic");
    }, function(error){
         console.error("Error unsubscribing from topic: " + error);
    })
    $.ajax({
      method: "POST",
      url: push.url('remove'),
      data: data,
      contentType: 'application/x-www-form-urlencoded; charset=UTF-8',
      success: function(){
        console.log("unsubscribed from", channel)
        cb && cb()
      },
      error: push.error,
    })
  }
  push.url = function(key){
    return sdk.cms() + '/_services/push/' + key
  }
  push.got_push_notification = function(message) {
    // console.log('We received this push notification: ' + JSON.stringify(push_obj));
    app.blog.refresh()
    
    var is_hub = true

    FirebasePlugin.setBadgeNumber(0)

    try {
      is_hub = !! JSON.stringify(push_obj || {}).match(/hub/i)
    } catch (e) { }

    if (is_hub) {
      app.intro.$alert.show().html("[ HUB UPDATED ]")
      analytics.sendPageView("push/open/hub")
      app.router.go("intro")
    } else {
      auth.clear_cart()
      app.intro.$alert.show().html("[ STORE UPDATED ]")
      analytics.sendPageView("push/open/store")
      app.router.go("intro")
    }
  }
  push.error = function(e){
    console.log("push error")
  }
  return push
})()