Tampermonkeyにて、Scrapboxで日記ページを作るためのUserScript

scrapbox_add_diary.user.js

// ==UserScript==
// @name         scrapbox_add_diary
// @version      1.3
// @description  Scrapboxにその日の日付の日記ページを追加する。ページが存在する場合は打刻してページを開く。
// @author       yuki2021
// @match        https://scrapbox.io/*
// ==/UserScript==

function diffDate(date, diffDays, diffMonths = 0, diffYears = 0) {
    var d = new Date(date);
    d.setDate(d.getDate() + diffDays);
    d.setMonth(d.getMonth() + diffMonths);
    d.setFullYear(d.getFullYear() + diffYears);
    var a = [
        d.getFullYear(),
        ('00' + (1 + d.getMonth())).slice(-2),
        ('00' + d.getDate()).slice(-2)
    ];
    return a.join('/');
}

function getCurrentDateString() {
    var d = new Date();
    var year = d.getFullYear();
    var dt = d.getDate();
    var month = d.getMonth() + 1;
    var date = [
        year,
        ('00' + month).slice(-2),
        ('00' + dt).slice(-2)
    ];
    return date.join('/');
}

function getPageTags(projectUrl, dateStr) {
    var days = ["日", "月", "火", "水", "木", "金", "土"];
    var d = new Date(dateStr);
    var year = d.getFullYear();
    var month = d.getMonth() + 1;
    var day = days[d.getDay()];

    return [
        '[← ' + projectUrl + encodeURIComponent(diffDate(dateStr, -1)) + ']',
        '#' + year,
        '#' + month + '月',
        '#' + day + '曜日',
        '[1ヶ月前 ' + projectUrl + encodeURIComponent(diffDate(dateStr, 0, -1)) + ']',
        '[3ヶ月前 ' + projectUrl + encodeURIComponent(diffDate(dateStr, 0, -3)) + ']',
        '[1年前 ' + projectUrl + encodeURIComponent(diffDate(dateStr, 0, 0, -1)) + ']',
        '[→ ' + projectUrl + encodeURIComponent(diffDate(dateStr, +1)) + ']'
    ];
}

async function pageExists(scrapboxProject, title) {
    const response = await fetch(`https://scrapbox.io/api/pages/${scrapboxProject}/${encodeURIComponent(title)}`);
    const data = await response.json();
    return data.descriptions && data.descriptions.length > 0;
}

async function handleKeyPress(event) {
    if (event.altKey && event.code === 'KeyD') {
        // 特殊文字入力阻止
        event.preventDefault();
        const title = getCurrentDateString();
        const scrapboxProject = location.href.match(/scrapbox.io\/([^\/.]*)/)[1];
        const projectUrl = 'https://scrapbox.io/' + scrapboxProject + '/';
        const scrapboxUrl = 'https://scrapbox.io/' + scrapboxProject + '/' + encodeURIComponent(title);

        if (await pageExists(scrapboxProject, title)) {
            const now = new Date();
            const hour = now.getHours();
            const minute = now.getMinutes();
            const second = now.getSeconds();
            const writeTime = encodeURIComponent('\t' + title + ' ' + hour + ':' + minute + ':' + second);
            window.open(scrapboxUrl + '?body=' + writeTime);
        } else {
            const tags = getPageTags(projectUrl, title);
            const tagsStr = encodeURIComponent(tags.join(' '));
            window.open(scrapboxUrl + '?body=' + tagsStr);
        }
    }
}

document.addEventListener('keydown', handleKeyPress, true);