const film_fix = function() {

    // This function will set cn_disable to the following values:
    //  0 == Apple device of a full supported browser (Chrome, Firefox, Edge), also Android 
    //  1 == Device that cannot play HLS videos only MP4
    //  2 == Device that cannot play any video at all

    cn_disable = -1;
    home_events = -1;

    const t = {
        ua: window.navigator.userAgent
    };
    const u_agent = t.ua.toLowerCase();


    const cn_disable_0_u_agents = [
        "apple", 
        "iphone",
        "ipad",
        "mac",
        "safari"
    ]

    const cn_disable_1_u_agents = [
        "36kr",
        "acfun",
        "aliapp",
        "baidu",
        "bili",
        "buildup",
        "byte",
        "dingtalk",
        "himalaya",
        "ijkplayer",
        "imgotv",
        "iting",
        "keep",
        "kuai",
        "kwai",
        "live4iphone",
        "mango",
        "maoyan",
        "mgtv",
        "micromessenger",
        "migu",
        "mihome",
        "moji",
        "moo",
        "netease",
        "pgbm",
        "ppstream",
        "qbwebview",
        "qq",
        "qiyi",
        "qunar",
        "qyplayer",
        "smz",
        "sogou",
        "sohu",
        "sspai",
        "tencent",
        "ucbrowser",
        "variflight",
        "walkman",
        "windvane",
        "youdao",
        "youku",
        "yuedong",
        "zhihu",
        "kswebview",
        "weibo",

        "facebook",
        "pinterest",
        "snapchat",
        "yahoo",
        "naver",
        "kaokao",
        "toss",
        "instagram"
    ];

    const cn_disable_2_u_agents = [
        "iqoo",
        "ireader"
    ]

    const events_0_u_agents = [
        "chrome",
        "crios",
        "firefox",
        "fxios",
        "edge",
        "android",
        "linux",
        "wechat",
        "weixin"
    ]

    // if Apple device then can play everything
    cn_disable_0_u_agents.some(agent => {
        if(u_agent.indexOf(agent) > -1) {
            if ((u_agent.indexOf("android") < 0) && (u_agent.indexOf("linux") < 0)) {
                cn_disable = 0;
            }
        }
    })

    // if mp4 compatible app then set to mp4
    if (cn_disable < 0) { 
        cn_disable_1_u_agents.some(agent => {
            if(u_agent.indexOf(agent) > -1) {
                cn_disable = 1;
            }
        })
    }

    // if lowest app don't play any video
    if (cn_disable < 0) { 
        cn_disable_2_u_agents.some(agent => {
            if(u_agent.indexOf(agent) > -1) {
                cn_disable = 2;
            }
        })
    }

    if (cn_disable <= 0) {
        home_events = 0;

        cn_disable_1_u_agents.some(agent => {
            if(u_agent.indexOf(agent) > -1) {
                home_events = 1;
            }
        })
        cn_disable_2_u_agents.some(agent => {
            if(u_agent.indexOf(agent) > -1) {
                home_events = 1;
            }
        })
        events_0_u_agents.some(agent => {
            if(u_agent.indexOf(agent) > -1) {
                home_events = 1;
            }
        })
    } else {
        home_events = 1;
    }

    // default in case user agent has no match, roll to default website behavior (aka, do nothing)
    if (cn_disable === -1) cn_disable = 0;
    if (home_events === -1) home_events = 0;
}

window.onload = film_fix();