// ==UserScript==
// @name         動畫瘋-自動觀看廣告
// @namespace    https://shinoharahare.github.io/
// @version      0.2
// @description  自動觀看動畫瘋廣告
// @author       Hare
// @match        https://ani.gamer.com.tw/animeVideo.php?sn=*
// @match        https://imasdk.googleapis.com/js/core/bridge*
// @grant        none
// @downloadURL none
// ==/UserScript==

(async () => {
    'use strict';

    if (location.href.includes('ani.gamer.com.tw')) {
        if (await checkAD()) {
            registerMessageHandlerTop()
            await trigger('#adult', 'click')
            document.querySelector('video[title=Advertisement]').addEventListener('play', ({ target }) => target.muted = true)

            await sleep(30000)

            await postMessage2Ima({ type: 'skip' })

            const video = document.querySelector('#ani_video_html5_api')
            video.addEventListener('loadeddata', () => {
                const t = () => video.pause() || video.removeEventListener('play', t)
                video.addEventListener('play', t)
            })
        }

    } else if (location.href.includes('imasdk.googleapis.com')) {
        if (window.self != window.top) {
            registerMessageHandlerIma()
        }
    }
})();

function registerMessageHandlerTop() {
    window.resolves = {}
    window.addEventListener('message', ({ data }) => {
        const id = data._id
        if (id in window.resolves) {
            window.resolves[id]()
            delete window.resolves[id]
        }
    })
}

function registerMessageHandlerIma() {
    window.addEventListener('message', ({ data, source }) => {
        if (data._id) {
            switch (data.type) {
                case 'skip': {
                    document.querySelector('.videoAdUiSkipButton').click()
                    break
                }
            }
            source.postMessage(data, 'https://ani.gamer.com.tw')
        }
    })
}

function postMessage2Ima(msg) {
    const win = document.querySelector('iframe[src^="https://imasdk.googleapis.com/js/core/"]').contentWindow
    return new Promise(resolve => {
        const id = performance.now()
        window.resolves[id] = resolve
        win.postMessage({
            _id: id,
            ...msg
        }, 'https://imasdk.googleapis.com')
    })
}

async function checkAD() {
    const res = await fetch(`/ajax/token.php?sn=${animefun.videoSn}`)
    const json = await res.json()
    return json.time == 0
}

function trigger(selector, action) {
    return new Promise(resolve => {
        let i = setInterval(() => {
            let el = document.querySelector(selector)
            if (el) {
                el[action]()
                clearInterval(i)
                resolve()
            }
        }, 500)
    })
}

function sleep(ms) {
    return new Promise(resolve => setTimeout(resolve, ms))
}