2017-11-05 09:32:46 +01:00

758 lines
18 KiB
TypeScript

import { Application } from "./Application"
import { Diff } from "./Diff"
import { MutationQueue } from "./MutationQueue"
import { StatusMessage } from "./StatusMessage"
import { PushManager } from "./PushManager"
import { TouchController } from "./TouchController"
import { Analytics } from "./Analytics"
import { SideBar } from "./SideBar"
import { InfiniteScroller } from "./InfiniteScroller"
import { ServiceWorkerManager } from "./ServiceWorkerManager"
import { displayAiringDate, displayDate } from "./DateView"
import { findAll, delay, canUseWebP, swapElements } from "./Utils"
import * as actions from "./Actions"
export class AnimeNotifier {
app: Application
analytics: Analytics
user: HTMLElement
title: string
webpEnabled: boolean
contentLoadedActions: Promise<any>
statusMessage: StatusMessage
visibilityObserver: IntersectionObserver
pushManager: PushManager
serviceWorkerManager: ServiceWorkerManager
touchController: TouchController
sideBar: SideBar
infiniteScroller: InfiniteScroller
mainPageLoaded: boolean
isLoading: boolean
lastReloadContentPath: string
elementFound: MutationQueue
elementNotFound: MutationQueue
unmount: MutationQueue
constructor(app: Application) {
this.app = app
this.user = null
this.title = "Anime Notifier"
this.isLoading = true
this.elementFound = new MutationQueue(elem => elem.classList.add("element-found"))
this.elementNotFound = new MutationQueue(elem => elem.classList.add("element-not-found"))
this.unmount = new MutationQueue(elem => elem.classList.remove("mounted"))
// These classes will never be removed on DOM diffs
Diff.persistentClasses.add("mounted")
Diff.persistentClasses.add("element-found")
// Never remove src property on diffs
Diff.persistentAttributes.add("src")
if("IntersectionObserver" in window) {
// Enable lazy load
this.visibilityObserver = new IntersectionObserver(
entries => {
for(let entry of entries) {
if(entry.intersectionRatio > 0) {
entry.target["became visible"]()
this.visibilityObserver.unobserve(entry.target)
}
}
},
{}
)
} else {
// Disable lazy load feature
this.visibilityObserver = {
disconnect: () => {},
observe: (elem: HTMLElement) => {
elem["became visible"]()
},
unobserve: (elem: HTMLElement) => {}
} as IntersectionObserver
}
}
init() {
// App init
this.app.init()
// Event listeners
document.addEventListener("readystatechange", this.onReadyStateChange.bind(this))
document.addEventListener("DOMContentLoaded", this.onContentLoaded.bind(this))
document.addEventListener("keydown", this.onKeyDown.bind(this), false)
window.addEventListener("popstate", this.onPopState.bind(this))
// Idle
this.requestIdleCallback(this.onIdle.bind(this))
}
requestIdleCallback(func: Function) {
if("requestIdleCallback" in window) {
window["requestIdleCallback"](func)
} else {
func()
}
}
onReadyStateChange() {
if(document.readyState !== "interactive") {
return
}
this.run()
}
run() {
// Check for WebP support
this.webpEnabled = canUseWebP()
// Initiate the elements we need
this.user = this.app.find("user")
this.app.content = this.app.find("content")
this.app.loading = this.app.find("loading")
// Status message
this.statusMessage = new StatusMessage(
this.app.find("status-message"),
this.app.find("status-message-text")
)
// Push manager
this.pushManager = new PushManager()
// Service worker
this.serviceWorkerManager = new ServiceWorkerManager(this, "/service-worker")
// Analytics
this.analytics = new Analytics()
// Sidebar control
this.sideBar = new SideBar(this.app.find("sidebar"))
// Infinite scrolling
this.infiniteScroller = new InfiniteScroller(this.app.content.parentElement, 100)
// Loading
this.loading(false)
}
onContentLoaded() {
// Stop watching all the objects from the previous page.
this.visibilityObserver.disconnect()
this.contentLoadedActions = Promise.all([
Promise.resolve().then(() => this.mountMountables()),
Promise.resolve().then(() => this.lazyLoad()),
Promise.resolve().then(() => this.displayLocalDates()),
Promise.resolve().then(() => this.setSelectBoxValue()),
Promise.resolve().then(() => this.assignActions()),
Promise.resolve().then(() => this.updatePushUI()),
Promise.resolve().then(() => this.dragAndDrop()),
Promise.resolve().then(() => this.countUp())
])
// Apply page title
let headers = document.getElementsByTagName("h1")
if(this.app.currentPath === "/" || headers.length === 0) {
if(document.title !== this.title) {
document.title = this.title
}
} else {
document.title = headers[0].innerText
}
}
onIdle() {
// Service worker
this.serviceWorkerManager.register()
// Analytics
if(this.user) {
this.analytics.push()
}
// Offline message
if(navigator.onLine === false) {
this.statusMessage.showError("You are viewing an offline version of the site now.")
}
}
dragAndDrop() {
for(let element of findAll("inventory-slot")) {
// Skip elements that have their event listeners attached already
if(element["listeners-attached"]) {
continue
}
element.addEventListener("dragstart", e => {
if(!element.draggable) {
return
}
e.dataTransfer.setData("text", element.dataset.index)
}, false)
element.addEventListener("dblclick", e => {
if(!element.draggable) {
return
}
let itemName = element.title
if(element.dataset.consumable !== "true") {
return this.statusMessage.showError(itemName + " is not a consumable item.")
}
let apiEndpoint = this.findAPIEndpoint(element)
this.post(apiEndpoint + "/use/" + element.dataset.index, "")
.then(() => this.reloadContent())
.then(() => this.statusMessage.showInfo(`You used ${itemName}.`))
.catch(err => this.statusMessage.showError(err))
}, false)
element.addEventListener("dragenter", e => {
element.classList.add("drag-enter")
}, false)
element.addEventListener("dragleave", e => {
element.classList.remove("drag-enter")
}, false)
element.addEventListener("dragover", e => {
e.preventDefault()
}, false)
element.addEventListener("drop", e => {
let toElement = e.toElement as HTMLElement
toElement.classList.remove("drag-enter")
e.stopPropagation()
e.preventDefault()
let inventory = e.toElement.parentElement
let fromIndex = e.dataTransfer.getData("text")
if(!fromIndex) {
return
}
let fromElement = inventory.childNodes[fromIndex] as HTMLElement
let toIndex = toElement.dataset.index
if(fromElement === toElement || fromIndex === toIndex) {
return
}
// Swap in database
let apiEndpoint = this.findAPIEndpoint(inventory)
this.post(apiEndpoint + "/swap/" + fromIndex + "/" + toIndex, "")
.catch(err => this.statusMessage.showError(err))
// Swap in UI
swapElements(fromElement, toElement)
fromElement.dataset.index = toIndex
toElement.dataset.index = fromIndex
}, false)
// Prevent re-attaching the same listeners
element["listeners-attached"] = true
}
}
async updatePushUI() {
if(!this.pushManager.pushSupported || !this.app.currentPath.includes("/settings/notifications")) {
return
}
let subscription = await this.pushManager.subscription()
if(subscription) {
this.app.find("enable-notifications").style.display = "none"
this.app.find("disable-notifications").style.display = "flex"
} else {
this.app.find("enable-notifications").style.display = "flex"
this.app.find("disable-notifications").style.display = "none"
}
}
countUp() {
for(let element of findAll("count-up")) {
let final = parseInt(element.innerText)
let duration = 2000.0
let start = Date.now()
element.innerText = "0"
let callback = () => {
let progress = (Date.now() - start) / duration
if(progress > 1) {
progress = 1
}
element.innerText = String(Math.round(progress * final))
if(progress < 1) {
window.requestAnimationFrame(callback)
}
}
window.requestAnimationFrame(callback)
}
}
setSelectBoxValue() {
for(let element of document.getElementsByTagName("select")) {
element.value = element.getAttribute("value")
}
}
displayLocalDates() {
const now = new Date()
for(let element of findAll("utc-airing-date")) {
displayAiringDate(element, now)
}
for(let element of findAll("utc-date")) {
displayDate(element, now)
}
}
reloadContent(cached?: boolean) {
// console.log("reload content", "/_" + this.app.currentPath)
let headers = new Headers()
if(!cached) {
headers.append("X-Reload", "true")
} else {
headers.append("X-CacheOnly", "true")
}
let path = this.app.currentPath
this.lastReloadContentPath = path
return fetch("/_" + path, {
credentials: "same-origin",
headers
})
.then(response => {
if(this.app.currentPath !== path) {
return Promise.reject("old request")
}
return Promise.resolve(response)
})
.then(response => response.text())
.then(html => Diff.innerHTML(this.app.content, html))
.then(() => this.app.emit("DOMContentLoaded"))
}
reloadPage() {
console.log("reload page", this.app.currentPath)
let path = this.app.currentPath
this.lastReloadContentPath = path
return fetch(path, {
credentials: "same-origin"
})
.then(response => {
if(this.app.currentPath !== path) {
return Promise.reject("old request")
}
return Promise.resolve(response)
})
.then(response => response.text())
.then(html => {
Diff.root(document.documentElement, html)
})
.then(() => this.app.emit("DOMContentLoaded"))
.then(() => this.loading(false)) // Because our loading element gets reset due to full page diff
}
loading(newState: boolean) {
this.isLoading = newState
if(this.isLoading) {
document.documentElement.style.cursor = "progress"
this.app.loading.classList.remove(this.app.fadeOutClass)
} else {
document.documentElement.style.cursor = "auto"
this.app.loading.classList.add(this.app.fadeOutClass)
}
}
assignActions() {
for(let element of findAll("action")) {
let actionTrigger = element.dataset.trigger
let actionName = element.dataset.action
if(!actionTrigger || !actionName) {
continue
}
let oldAction = element["action assigned"]
if(oldAction) {
if(oldAction.trigger === actionTrigger && oldAction.action === actionName) {
continue
}
element.removeEventListener(oldAction.trigger, oldAction.handler)
}
if(!(actionName in actions)) {
this.statusMessage.showError(`Action '${actionName}' has not been defined`)
continue
}
let actionHandler = e => {
actions[actionName](this, element, e)
e.stopPropagation()
e.preventDefault()
}
element.addEventListener(actionTrigger, actionHandler)
// Use "action assigned" flag instead of removing the class.
// This will make sure that DOM diffs which restore the class name
// will not assign the action multiple times to the same element.
element["action assigned"] = {
trigger: actionTrigger,
action: actionName,
handler: actionHandler
}
}
}
lazyLoad() {
for(let element of findAll("lazy")) {
switch(element.tagName) {
case "IMG":
this.lazyLoadImage(element as HTMLImageElement)
break
case "IFRAME":
this.lazyLoadIFrame(element as HTMLIFrameElement)
break
}
}
}
lazyLoadImage(element: HTMLImageElement) {
// Once the image becomes visible, load it
element["became visible"] = () => {
// Replace URL with WebP if supported
if(this.webpEnabled && element.dataset.webp) {
let dot = element.dataset.src.lastIndexOf(".")
element.src = element.dataset.src.substring(0, dot) + ".webp"
} else {
element.src = element.dataset.src
}
if(element.naturalWidth === 0) {
element.onload = () => {
this.elementFound.queue(element)
}
element.onerror = () => {
this.elementNotFound.queue(element)
}
} else {
this.elementFound.queue(element)
}
}
this.visibilityObserver.observe(element)
}
lazyLoadIFrame(element: HTMLIFrameElement) {
// Once the iframe becomes visible, load it
element["became visible"] = () => {
// If the source is already set correctly, don't set it again to avoid iframe flickering.
if(element.src !== element.dataset.src && element.src !== (window.location.protocol + element.dataset.src)) {
element.src = element.dataset.src
}
this.elementFound.queue(element)
}
this.visibilityObserver.observe(element)
}
mountMountables() {
this.modifyDelayed("mountable", element => element.classList.add("mounted"))
}
unmountMountables() {
for(let element of findAll("mountable")) {
if(element.classList.contains("never-unmount")) {
continue
}
this.unmount.queue(element)
}
}
modifyDelayed(className: string, func: (element: HTMLElement) => void) {
const maxDelay = 1000
const delay = 18
let time = 0
let start = Date.now()
let maxTime = start + maxDelay
let mountableTypes = new Map<string, number>()
let mountableTypeMutations = new Map<string, Array<any>>()
let collection = document.getElementsByClassName(className)
if(collection.length === 0) {
return
}
// let delay = Math.min(maxDelay / collection.length, 20)
for(let i = 0; i < collection.length; i++) {
let element = collection.item(i) as HTMLElement
let type = element.dataset.mountableType || "general"
if(mountableTypes.has(type)) {
time = mountableTypes.get(type) + delay
mountableTypes.set(type, time)
} else {
time = start
mountableTypes.set(type, time)
mountableTypeMutations.set(type, [])
}
if(time > maxTime) {
time = maxTime
}
mountableTypeMutations.get(type).push({
element,
time
})
}
for(let mountableType of mountableTypeMutations.keys()) {
let mutations = mountableTypeMutations.get(mountableType)
let mutationIndex = 0
let updateBatch = () => {
let now = Date.now()
for(; mutationIndex < mutations.length; mutationIndex++) {
let mutation = mutations[mutationIndex]
if(mutation.time > now) {
break
}
func(mutation.element)
}
if(mutationIndex < mutations.length) {
window.requestAnimationFrame(updateBatch)
}
}
window.requestAnimationFrame(updateBatch)
}
}
diff(url: string) {
if(url === this.app.currentPath) {
return Promise.reject(null)
}
let path = "/_" + url
let request = fetch(path, {
credentials: "same-origin"
})
.then(response => {
return response.text()
})
history.pushState(url, null, url)
this.app.currentPath = url
this.app.markActiveLinks()
this.unmountMountables()
this.loading(true)
// Delay by transition-speed
return delay(200).then(() => request)
.then(html => this.app.setContent(html, true))
.then(() => this.app.emit("DOMContentLoaded"))
.then(() => this.loading(false))
.catch(console.error)
}
post(url: string, body: any) {
if(this.isLoading) {
return Promise.resolve(null)
}
if(typeof body !== "string") {
body = JSON.stringify(body)
}
this.loading(true)
return fetch(url, {
method: "POST",
body,
credentials: "same-origin"
})
.then(response => {
this.loading(false)
if(response.status === 200) {
return Promise.resolve(response)
}
return response.text().then(err => {
throw err
})
})
.catch(err => {
this.loading(false)
throw err
})
}
scrollTo(target: HTMLElement) {
const duration = 250.0
const steps = 60
const interval = duration / steps
const fullSin = Math.PI / 2
const contentPadding = 24
let scrollHandle: number
let oldScroll = this.app.content.parentElement.scrollTop
let newScroll = 0
let finalScroll = Math.max(target.offsetTop - contentPadding, 0)
let scrollDistance = finalScroll - oldScroll
if(scrollDistance > 0 && scrollDistance < 4) {
return
}
let timeStart = Date.now()
let timeEnd = timeStart + duration
let scroll = () => {
let time = Date.now()
let progress = (time - timeStart) / duration
if(progress > 1.0) {
progress = 1.0
}
newScroll = oldScroll + scrollDistance * Math.sin(progress * fullSin)
this.app.content.parentElement.scrollTop = newScroll
if(time < timeEnd && newScroll != finalScroll) {
window.requestAnimationFrame(scroll)
}
}
window.requestAnimationFrame(scroll)
}
findAPIEndpoint(element: HTMLElement) {
if(element.dataset.api !== undefined) {
return element.dataset.api
}
let apiObject: HTMLElement
let parent = element
while(parent = parent.parentElement) {
if(parent.dataset.api !== undefined) {
apiObject = parent
break
}
}
if(!apiObject) {
throw "API object not found"
}
return apiObject.dataset.api
}
onPopState(e: PopStateEvent) {
if(e.state) {
this.app.load(e.state, {
addToHistory: false
})
} else if(this.app.currentPath !== this.app.originalPath) {
this.app.load(this.app.originalPath, {
addToHistory: false
})
}
}
onKeyDown(e: KeyboardEvent) {
let activeElement = document.activeElement
// Ignore hotkeys on input elements
switch(activeElement.tagName) {
case "INPUT":
case "TEXTAREA":
return
}
// Ignore hotkeys on contentEditable elements
if(activeElement.getAttribute("contenteditable") === "true") {
// Disallow Enter key in contenteditables and make it blur the element instead
if(e.keyCode == 13) {
if("blur" in activeElement) {
activeElement["blur"]()
}
e.preventDefault()
e.stopPropagation()
}
return
}
// F = Search
if(e.keyCode == 70 && !e.ctrlKey) {
let search = this.app.find("search") as HTMLInputElement
search.focus()
search.select()
e.preventDefault()
e.stopPropagation()
return
}
// Ctrl + , = Settings
if(e.ctrlKey && e.keyCode == 188) {
this.app.load("/settings")
e.preventDefault()
e.stopPropagation()
return
}
}
}