// ==UserScript==
// @name         虾米网页播放器
// @namespace    https://github.com/maijz128
// @version      0.2.2
// @description  给虾米网页播放器添加快捷键：音量（E-上调；D-下调）、下一首（F）、上一首（S）
// @author       MaiJZ
// @match        *://www.xiami.com/play*
// @match        *://www.xiami.com/radio/play/*
// @match        *://www.xiami.com
// @match        *://www.xiami.com/index
// @grant        none
// @downloadURL none
// ==/UserScript==



const KEYS = {
    ENTER: 13, SPACE: 32, ESC: 27,
    LEFT: 37, UP: 38, RIGHT: 39, DOWN: 40,
    A: 65, D: 68, E: 69, F: 70, S: 83, W: 87, Z: 90
};

const G = {
    UpVolume: KEYS.E, DownVolume: KEYS.D, PrevSong: KEYS.S, NextSong: KEYS.F
};

(function () {
    main();
})();

function main() {
    if (matchURL('/radio/play/')) {
        //new Radio();
    } else if (matchURL('xiami.com/play')) {
        new OnlinePlayer();
    } else {
        setTimeout(function () {
            tosign();
        }, 1000);
    }
}

// 自动签到
function tosign() {
    var b_tosign = $(' div.content  div.action .tosign');
    if (b_tosign) {
        b_tosign.click();
    }
}

function Radio() {

    onKeyDown();

    function canShortcutKey() {
        // const elSwitch = document.getElementById("mjz_shortcutkeyswitch");
        // if (elSwitch) {
        //     return elSwitch.checked;
        // }
        return true;
    }

    function onKeyDown() {
        document.onkeydown = function (event) {
            var e = event || window.event || arguments.callee.caller.arguments[0];
            if (e && canShortcutKey()) {
                handleKeyDown(e.keyCode);
            }
        };
    }

    function handleKeyDown(keyCode) {
        const player_main = document.getElementById("radioPlayer");
        switch (keyCode) {
            case G.UpVolume:
                console.log(keyCode + ": UpVolume");
                fireKeyEvent(player_main, "keydown", KEYS.UP);
                break;

            case G.DownVolume:
                console.log(keyCode + ": DownVolume");
                fireKeyEvent(player_main, "keydown", KEYS.DOWN);
                break;

            case G.PrevSong:
                console.log(keyCode + ": PrevSong");
                fireKeyEvent(player_main, "keydown", KEYS.LEFT);
                break;

            case G.NextSong:
                console.log(keyCode + ": NextSong");
                fireKeyEvent(player_main, "keydown", KEYS.RIGHT);
                break;

            default:
                break;
        }
    }


}

function OnlinePlayer() {
    playerHQ();
    addShortcutKeySwitch();
    onKeyDown();


    function playerHQ() {
        var timeout = 2000;
        setTimeout(function () {
            const elHQ = document.getElementById("J_playerHQ");
            if (elHQ) {
                elHQ.click();
                closeDialog_clt();
            }
        }, timeout);
    }

    // 当点击切换音质时，出现付费提示，自动关闭它
    function closeDialog_clt() {
        var timeout = 500;
        setTimeout(function () {
            const el_dialog_clt = document.getElementById("dialog_clt");
            // 官方方法
            closedialog();
        }, timeout);
    }


    function addShortcutKeySwitch() {
        var timeout = 1000;
        setTimeout(function () {
            const el = document.querySelector(".player-controls");
            if (el) {
                const elCheckbox = document.createElement("lable");
                elCheckbox.innerHTML =
                    '<input type="checkbox" name="shortchut_key" id="mjz_shortcutkeyswitch" checked="true">快捷键';

                el.appendChild(elCheckbox);
            }
        }, timeout);
    }
    function isShortcutKey() {
        const elSwitch = document.getElementById("mjz_shortcutkeyswitch");
        if (elSwitch) {
            return elSwitch.checked;
        }
        return true;
    }

    function onKeyDown() {
        document.onkeydown = function (event) {
            var e = event || window.event || arguments.callee.caller.arguments[0];
            if (e && isShortcutKey()) {
                handleKeyDown(e.keyCode);
            }
        };
    }

    function handleKeyDown(keyCode) {
        const player_main = document.getElementById("player-main");
        switch (keyCode) {
            case G.UpVolume:
                console.log(keyCode + ": UpVolume");
                fireKeyEvent(player_main, "keydown", KEYS.UP);
                break;

            case G.DownVolume:
                console.log(keyCode + ": DownVolume");
                fireKeyEvent(player_main, "keydown", KEYS.DOWN);
                break;

            case G.PrevSong:
                console.log(keyCode + ": PrevSong");
                fireKeyEvent(player_main, "keydown", KEYS.LEFT);
                break;

            case G.NextSong:
                console.log(keyCode + ": NextSong");
                fireKeyEvent(player_main, "keydown", KEYS.RIGHT);
                break;

            default:
                break;
        }
    }


}

// Usage: fireKeyEvent(input元素, 'keydown', 13);  
// http://blog.csdn.net/lovelyelfpop/article/details/52471878
function fireKeyEvent(el, evtType, keyCode) {
    var doc = el.ownerDocument;
    var win = doc.defaultView || doc.parentWindow,
        evtObj;
    if (doc.createEvent) {
        if (win.KeyEvent) {
            evtObj = doc.createEvent('KeyEvents');
            evtObj.initKeyEvent( evtType, true, true, win, false, false, false, false, keyCode, 0 );
        }
        else {
            evtObj = doc.createEvent('UIEvents');
            Object.defineProperty(evtObj, 'keyCode', {
                get : function () { return this.keyCodeVal; }
            });
            Object.defineProperty(evtObj, 'which', {
                get : function () { return this.keyCodeVal; }
            });
            evtObj.initUIEvent( evtType, true, true, win, 1 );
            evtObj.keyCodeVal = keyCode;
            if (evtObj.keyCode !== keyCode) {
                console.log("keyCode " + evtObj.keyCode + " 和 (" + evtObj.which + ") 不匹配");
            }
        }
        el.dispatchEvent(evtObj);
    }
    else if (doc.createEventObject) {
        evtObj = doc.createEventObject();
        evtObj.keyCode = keyCode;
        el.fireEvent('on' + evtType, evtObj);
    }
}


function matchURL(url) {
    const URL = window.location.href;
    return URL.indexOf(url) > -1;
}

function addStyle(styleContent) {
    var elStyle = document.createElement("style");
    elStyle.innerHTML = styleContent;
    document.head.appendChild(elStyle);
}