# userscript版

// ==UserScript==
// @name kinico_timeseeker
// @version 0.1
// @description 帰ニコ用時間移動スクリプト
// @match https://www.nicovideo.jp/watch/*
// @grant none
// @run-at document-start
// ==/UserScript==

(function () {

    /** @return {HTMLElement} */
    let tag = (tagname = "div", {a, s, e, t} = {})=>{
        let dom = document.createElement(tagname);
        for(let k in a)dom.setAttribute(k, a[k]);
        for(let k in s)dom.style[k] = s[k];
        for(let k in e)dom.addEventListener(k, e[k]);
        if(t)dom.textContent = t;
        return dom;
    };

    const buttonStyle = {borderRadius: "5px", padding: "0px 3px 0px 3px", border: "solid 1px #000", background: "#ddd", color: "#000"};

    const containerBuild = (
        title = [],
        menu = [],
        body = [],
        onRemoveTodo = [],
    )=>{
        let container = tag("div", {
            s: {border: "2px solid #000", padding: 0, margin: 0},
        });

        let header = tag("div", {
            s: {border: "2px solid #666", display: "grid", grid: "auto-flow/auto max-content"},
        });
        header.append(
            ...title,
            tag("button", {t: "\u2026", s: buttonStyle, e: {click: (e)=>{
                e.stopPropagation();
                menuDom.toggleAttribute("hidden");
            }}}),
        );

        let menuDom = tag("div", {a: {hidden: "hidden"}, s: {textAlign: "right"}});
        menuDom.append(
            ...menu,
            tag("button", {t: "remove", s: buttonStyle, e: {click: ()=>{[...onRemoveTodo].map(v=>v());}}}),
        );
        container.append(
            header,
            menuDom,
            ...body,
        );
        container.remove();
        onRemoveTodo.push(()=>{container.remove();});
        return container;
    };

    (async()=>{
        let endFlag = false;
        let onRemoveTodo = [()=>{endFlag = true; onRemoveTodo = [];}];
        try{
            let playerOpp;
            let containerAdder;
            const playerOppFinder = ()=>{
                let rootDom = document.querySelector("main");
                if(!rootDom)return;
                let root = rootDom[Object.keys(rootDom).find(v=>v.startsWith("__reactFiber"))];
                if(!root)return;

                let pool = [root];
                let r;
                while(pool[0] && !r){
                    let t = pool.pop();
                    if(t?.memoizedProps?.playerOperation){
                        r = t.memoizedProps.playerOperation;
                    }
                    if(t.sibling)pool.push(t.sibling);
                    if(t.child)pool.push(t.child);
                }
                return r;
            };
            const containerAddFuncMake = ()=>{
                let videoElement = document.querySelector(`main video`);
                let commentInput = document.querySelector(`main textarea`);
                if(!videoElement || !commentInput)return;
                let videoWrapper = videoElement;
                while(!videoWrapper.parentElement.contains(commentInput)){
                    videoWrapper = videoWrapper.parentElement;
                }
                return (element)=>{
                    videoWrapper.parentElement.insertBefore(element, videoWrapper.nextSibling);
                };
            };
            {
                // page match
                let i = 10;
                while(
                    !(playerOpp ??= playerOppFinder()) ||
                    !(containerAdder ??= containerAddFuncMake())
                ){
                    if(i < 0)throw "target page not match";
                    await new Promise(res=>setTimeout(res, 500));
                    i--;
                }
            }
            let uiBody = tag("div", {s: {display: "grid", grid: "auto-flow/repeat(5, 1fr) 12ex repeat(5, 1fr)", height: "2lh"}});
            {
                // ui build
                const seek = (time)=>{
                    playerOpp.currentTime.set(
                        Math.min(playerOpp.duration, Math.max(0, time)),
                    );
                };
                const seekButtonBuilder = (str = "", moveVpos)=>tag(
                    "button",
                    {
                        t: str,
                        e: {
                            click: ()=>{
                                seek((Math.floor(playerOpp.currentTime.get() * 100) + moveVpos + 0.1) / 100);
                            },
                        },
                        s: buttonStyle,
                    });

                /** @type {HTMLInputElement} */
                let timeShow = tag("input", {a: {type: "text"}, s: {color: "#000", backgroundColor: "#ddd"}, e: {
                    change: ()=>{
                    /** @type {string} */
                        let valText = timeShow.value ?? "";
                        let {1:hour = "0", 2:min = "0", 3:sec = "0", 4:subsec = ".0"} = valText.replace(/\s/, "")
                            .match(/(?:(?:([0-9]*):)?([0-9]*):)?([0-9]+)(\.[0-9]+)?/) ?? {};

                        let targetTime = ((hour - 0) * 60 + (min - 0)) * 60 + ((sec + subsec) - 0);
                        seek(targetTime + (subsec.length < 4 ? 0.001 : 0));
                    },
                }});
                const timeShowUpdate = ()=>{
                    if(endFlag)return;
                    if(document.activeElement != timeShow){
                        let vpos = Math.floor(playerOpp.currentTime.get() * 100);
                        let subsec = vpos % 100;
                        let sec = (vpos - subsec) % 6000;
                        let min = vpos - sec - subsec;
                        const strMake = (v)=>Math.round(v).toString().padStart(2, "0");

                        timeShow.value = `${strMake(min / 6000)}:${strMake(sec / 100)}.${strMake(subsec)}`;
                    }
                    window.requestAnimationFrame(timeShowUpdate);
                };
                timeShowUpdate();

                uiBody.append(
                    seekButtonBuilder("-10  ", -1000),
                    seekButtonBuilder("-3   ", -300),
                    seekButtonBuilder("-1   ", -100),
                    seekButtonBuilder("-0.1 ", -10),
                    seekButtonBuilder("-0.01", -1),
                    timeShow,
                    seekButtonBuilder("+0.01", +1),
                    seekButtonBuilder("+0.1 ", +10),
                    seekButtonBuilder("+1   ", +100),
                    seekButtonBuilder("+3   ", +300),
                    seekButtonBuilder("+10  ", +1000),
                );
            }

            console.log(playerOpp);
            let container = containerBuild(
                ["KiNico timeseeker 0.1"],
                [],
                [uiBody],
                onRemoveTodo,
            );
            containerAdder(container);

        }catch(e){
            console.log(e); // eslint-disable-line
            onRemoveTodo.map(v=>v());
        }
    })();

})();
# 帰ニコ用時間移動スクリプト

# ブックマークレット版

# userscript版
