drpy-node/apps/cron-generator/index.html at af7a7b9dbc3a2c063a5ad6aafea398c22c51f626 · hjdhnx/drpy-node · GitHub

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<!doctype html>
<html lang="zh-CN">
<head>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width,initial-scale=1" />
    <title>Cron 表达式生成器</title>
    <style>
        :root{--bg:#0f1724;--card:#0b1220;--muted:#94a3b8;--accent:#7c3aed;--glass: rgba(255,255,255,0.03)}
        html,body{height:100%;margin:0;font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,'Helvetica Neue',Arial;color:#e6eef8;background:linear-gradient(180deg,#071025 0%, #081226 60%);-webkit-font-smoothing:antialiased}
        .wrap{max-width:980px;margin:28px auto;padding:20px}
        .card{background:linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01));border-radius:14px;padding:18px;box-shadow:0 6px 30px rgba(2,6,23,0.6);border:1px solid rgba(255,255,255,0.03)}
        h1{margin:0 0 6px;font-size:20px}
        p.lead{margin:0 0 16px;color:var(--muted);font-size:13px}

        .grid{display:grid;grid-template-columns:1fr 320px;gap:16px}
        @media(max-width:880px){.grid{grid-template-columns:1fr} .right{order:2}}

        .field{display:flex;flex-direction:column;margin-bottom:10px}
        label{font-size:13px;color:var(--muted);margin-bottom:6px}
        select,input[type="time"],input[type="number"],input[type="text"]{background:var(--glass);border:1px solid rgba(255,255,255,0.04);padding:10px;border-radius:8px;color:#e6eef8}
        .row{display:flex;gap:10px}
        .btn{display:inline-flex;align-items:center;gap:8px;padding:10px 12px;border-radius:10px;border:none;cursor:pointer}
        .btn-primary{background:linear-gradient(90deg,var(--accent),#4f46e5);color:white}
        .btn-ghost{background:transparent;border:1px solid rgba(255,255,255,0.04);color:var(--muted)}

        .preset-list{display:flex;flex-wrap:wrap;gap:8px}
        .chip{background:rgba(255,255,255,0.03);padding:8px 10px;border-radius:999px;font-size:13px;color:var(--muted);cursor:pointer;border:1px solid rgba(255,255,255,0.02)}

        pre.preview{background:#020617;padding:12px;border-radius:8px;color:#c7f9d7;overflow:auto}
        .meta{font-size:13px;color:var(--muted);margin-top:8px}

        .small{font-size:12px;color:var(--muted)}
        .footer{display:flex;justify-content:space-between;align-items:center;margin-top:12px}

        /* mobile tweaks */
        @media(max-width:420px){.wrap{padding:12px} h1{font-size:18px}}
    </style>
</head>
<body>
<div class="wrap">
    <div class="card">
        <h1>Cron 表达式生成器</h1>
        <p class="lead">以友好的交互方式选择时间/频率，自动生成支持 6 字段（秒 分 时 日 月 周）格式的 cron 表达式。移动端自适应。</p>

        <div class="grid">
            <div class="left">
                <div class="field">
                    <label>调度类型</label>
                    <select id="mode">
                        <option value="every">每隔（间隔）</option>
                        <option value="daily">每天特定时间</option>
                        <option value="weekly">每周（指定星期几）</option>
                        <option value="monthly">每月（指定日）</option>
                        <option value="custom">高级自定义（直接编辑字段）</option>
                    </select>
                </div>

                <div id="intervalBox" class="field">
                    <label>间隔设置</label>
                    <div class="row">
                        <select id="intervalUnit">
                            <option value="minutes">分钟</option>
                            <option value="hours">小时</option>
                            <option value="days">天</option>
                        </select>
                        <input id="intervalValue" type="number" min="1" value="5" style="width:100px" />
                    </div>
                    <div class="small">示例：每 5 分钟</div>
                </div>

                <div id="dailyBox" class="field" style="display:none">
                    <label>每天执行时间</label>
                    <input id="dailyTime" type="time" value="09:00" />
                    <div class="small">指定本地时间（例如 Asia/Shanghai）</div>
                </div>

                <div id="weeklyBox" class="field" style="display:none">
                    <label>每周选择</label>
                    <div class="row" style="flex-wrap:wrap">
                        <label><input type="checkbox" value="0" class="weekday" /> 周日</label>
                        <label><input type="checkbox" value="1" class="weekday" /> 周一</label>
                        <label><input type="checkbox" value="2" class="weekday" /> 周二</label>
                        <label><input type="checkbox" value="3" class="weekday" /> 周三</label>
                        <label><input type="checkbox" value="4" class="weekday" /> 周四</label>
                        <label><input type="checkbox" value="5" class="weekday" /> 周五</label>
                        <label><input type="checkbox" value="6" class="weekday" /> 周六</label>
                    </div>
                    <div class="field" style="margin-top:8px">
                        <label>执行时间</label>
                        <input id="weeklyTime" type="time" value="09:00" />
                    </div>
                </div>

                <div id="monthlyBox" class="field" style="display:none">
                    <label>每月的哪一天</label>
                    <input id="monthDay" type="number" min="1" max="31" value="1" />
                    <div class="field" style="margin-top:8px">
                        <label>执行时间</label>
                        <input id="monthlyTime" type="time" value="09:00" />
                    </div>
                </div>

                <div id="customBox" class="field" style="display:none">
                    <label>自定义字段（秒 分 时 日 月 周）</label>
                    <input id="customFields" type="text" placeholder="例: 0 0 9 * * *" />
                    <div class="small">请提供 6 个字段的 cron 表达式，秒为首位。</div>
                </div>

                <div class="field">
                    <label>时区（可选）</label>
                    <select id="timezone">
                        <option value="">默认 (系统时区)</option>
                        <option value="Asia/Shanghai">Asia/Shanghai (北京时间)</option>
                        <option value="UTC">UTC</option>
                        <option value="Europe/London">Europe/London</option>
                        <option value="America/New_York">America/New_York</option>
                    </select>
                    <div class="small">如果你希望在特定时区执行，请选择。否则使用服务器默认时区。</div>
                </div>

                <div class="field">
                    <label>执行次数限制（说明）</label>
                    <input id="limitCount" type="number" min="0" value="0" />
                    <div class="small">注意：cron 本身无法限制总执行次数。填写 >0 仅会在下方显示建议的实现方式。</div>
                </div>

                <div style="margin-top:10px;display:flex;gap:8px;flex-wrap:wrap">
                    <button id="generate" class="btn btn-primary">生成 Cron</button>
                    <button id="copy" class="btn btn-ghost">复制到剪贴板</button>
                    <button id="reset" class="btn btn-ghost">重置</button>
                </div>

                <div style="margin-top:12px">
                    <div class="preset-list">
                        <div class="chip" data-preset="@every_minute">每分钟</div>
                        <div class="chip" data-preset="@hourly">每小时</div>
                        <div class="chip" data-preset="@daily">每天 00:00</div>
                        <div class="chip" data-preset="@weekday9">工作日 09:00</div>
                        <div class="chip" data-preset="@monthly1">每月 1 日 09:00</div>
                    </div>
                </div>

            </div>

            <div class="right card" style="padding:14px">
                <h2 style="margin-top:0">预览</h2>
                <pre id="cronPreview" class="preview"># 生成的 cron 表达式会在这里显示</pre>
                <div class="meta" id="metaZone">时区: <span id="metaTz">系统时区</span></div>
                <div class="meta" id="metaLimit" style="margin-top:6px;color:var(--muted)"></div>
                <div class="footer">
                    <div class="small">支持 6 字段 cron（秒 分 时 日 月 周）</div>
                    <div style="display:flex;gap:8px">
                        <button id="explain" class="btn btn-ghost">字段说明</button>
                        <button id="download" class="btn btn-ghost">下载 .txt</button>
                    </div>
                </div>
            </div>
        </div>

    </div>
</div>

<script>
    // DOM refs
    const mode = document.getElementById('mode');
    const intervalBox = document.getElementById('intervalBox');
    const dailyBox = document.getElementById('dailyBox');
    const weeklyBox = document.getElementById('weeklyBox');
    const monthlyBox = document.getElementById('monthlyBox');
    const customBox = document.getElementById('customBox');
    const intervalUnit = document.getElementById('intervalUnit');
    const intervalValue = document.getElementById('intervalValue');
    const dailyTime = document.getElementById('dailyTime');
    const weeklyTime = document.getElementById('weeklyTime');
    const monthDay = document.getElementById('monthDay');
    const monthlyTime = document.getElementById('monthlyTime');
    const customFields = document.getElementById('customFields');
    const timezone = document.getElementById('timezone');
    const generate = document.getElementById('generate');
    const copyBtn = document.getElementById('copy');
    const cronPreview = document.getElementById('cronPreview');
    const metaTz = document.getElementById('metaTz');
    const limitCount = document.getElementById('limitCount');
    const reset = document.getElementById('reset');
    const chips = document.querySelectorAll('.chip');
    const explain = document.getElementById('explain');
    const download = document.getElementById('download');

    function showBoxes() {
        intervalBox.style.display = mode.value === 'every' ? 'block' : 'none';
        dailyBox.style.display = mode.value === 'daily' ? 'block' : 'none';
        weeklyBox.style.display = mode.value === 'weekly' ? 'block' : 'none';
        monthlyBox.style.display = mode.value === 'monthly' ? 'block' : 'none';
        customBox.style.display = mode.value === 'custom' ? 'block' : 'none';
    }

    mode.addEventListener('change', showBoxes);
    showBoxes();

    chips.forEach(c => c.addEventListener('click', (e) => {
        const p = e.currentTarget.dataset.preset;
        if(p==='@every_minute'){ mode.value='every'; intervalUnit.value='minutes'; intervalValue.value=1; }
        if(p==='@hourly'){ mode.value='daily'; dailyTime.value='00:00'; }
        if(p==='@daily'){ mode.value='daily'; dailyTime.value='00:00'; }
        if(p==='@weekday9'){ mode.value='weekly'; weeklyTime.value='09:00'; document.querySelectorAll('.weekday').forEach(cb=>{cb.checked = ['1','2','3','4','5'].includes(cb.value)}); }
        if(p==='@monthly1'){ mode.value='monthly'; monthDay.value=1; monthlyTime.value='09:00'; }
        showBoxes();
    }));

    function pad(v){ return v.toString().padStart(2,'0'); }

    function buildCron(){
        let cron = '';
        const tz = timezone.value;
        metaTz.textContent = tz || '系统时区';

        if(mode.value==='every'){
            const unit = intervalUnit.value;
            const val = Math.max(1, Math.floor(Number(intervalValue.value)||1));
            if(unit==='minutes'){
                // 每 N 分钟： 秒 分 时 日 月 周 -> 0 */N * * * *
                cron = `0 */${val} * * * *`;
            } else if(unit==='hours'){
                // 每 N 小时： 0 0 */N * * *
                cron = `0 0 */${val} * * *`;
            } else if(unit==='days'){
                // 每 N 天： 0 0 0 */N * *  (执行于每天 00:00 的间隔)
                cron = `0 0 0 */${val} * *`;
            }
        }

        if(mode.value==='daily'){
            // dailyTime -> HH:MM
            const [hh,mm] = dailyTime.value.split(':');
            cron = `0 ${parseInt(mm,10)} ${parseInt(hh,10)} * * *`;
        }

        if(mode.value==='weekly'){
            const days = Array.from(document.querySelectorAll('.weekday:checked')).map(i=>i.value);
            const [hh,mm] = weeklyTime.value.split(':');
            const dayField = days.length ? days.join(',') : '*';
            cron = `0 ${parseInt(mm,10)} ${parseInt(hh,10)} * * ${dayField}`;
        }

        if(mode.value==='monthly'){
            const day = Math.min(31, Math.max(1, Number(monthDay.value||1)));
            const [hh,mm] = monthlyTime.value.split(':');
            cron = `0 ${parseInt(mm,10)} ${parseInt(hh,10)} ${day} * *`;
        }

        if(mode.value==='custom'){
            const txt = customFields.value.trim();
            cron = txt || '';
        }

        if(!cron) cron = '# 请选择调度后点击 生成 Cron';
        return { cron, tz };
    }

    function validateSixFields(expr){
        if(!expr) return false;
        const parts = expr.trim().split(/\s+/);
        return parts.length === 6;
    }

    generate.addEventListener('click', ()=>{
        const {cron, tz} = buildCron();
        cronPreview.textContent = cron + (tz?`\n(timezone: ${tz})`:'');

        // 显示 limit 建议
        const limit = Number(limitCount.value||0);
        const metaLimit = document.getElementById('metaLimit');
        if(limit>0){
            metaLimit.textContent = `执行次数限制：你填写了 ${limit} 次。建议在你的任务代码中记录并在达到次数后停止调度，或用外部调度器配合。`;
        } else { metaLimit.textContent = '' }
    });

    copyBtn.addEventListener('click', async ()=>{
        const text = cronPreview.textContent;
        try{
            await navigator.clipboard.writeText(text);
            copyBtn.textContent = '已复制';
            setTimeout(()=>copyBtn.textContent='复制到剪贴板',1200);
        }catch(e){
            alert('复制失败，请手动复制');
        }
    });

    reset.addEventListener('click', ()=>{ location.reload(); });

    explain.addEventListener('click', ()=>{
        alert('字段说明（6 字段）:\n秒 分 时 日 月 周\n示例: 0 0 9 * * * -> 每天 09:00 执行（秒:0 分:0 时:9）');
    });

    download.addEventListener('click', ()=>{
        const blob = new Blob([cronPreview.textContent], {type:'text/plain;charset=utf-8'});
        const url = URL.createObjectURL(blob);
        const a = document.createElement('a'); a.href = url; a.download = 'cron.txt'; a.click(); URL.revokeObjectURL(url);
    });

    // 初始生成
    document.getElementById('generate').click();
</script>
</body>
</html>