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// timePointUtils.js
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class TimePointUtils {
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constructor() {
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this.timePoints = this.generateTimePoints();
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}
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// 生成时间点数组,格式如下：[{"HHmm":"0000","package":0},{"HHmm":"0005","package":1},{"HHmm":"0010","package":2},...]
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generateTimePoints() {
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const points = [];
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for (let hour = 0; hour < 24; hour++) {
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for (let minute = 0; minute < 60; minute += 5) {
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const hh = hour.toString().padStart(2, '0');
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const mm = minute.toString().padStart(2, '0');
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const packageNum = hour * 12 + minute / 5;
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points.push({
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HHmm: hh + mm,
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package: packageNum
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});
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}
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}
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return points;
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}
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// 通过HHmm获取package编号
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getPackageByHHmm(hhmm) {
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if (!/^([0-1][0-9]|2[0-3])([0-5][0-9])$/.test(hhmm)) {
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console.error('Invalid HHmm format, should be like "0000", "2355"');
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return null;
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}
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const point = this.timePoints.find(item => item.HHmm === hhmm);
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return point ? point.package : null;
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}
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// 通过package编号获取HHmm
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getHHmmByPackage(packageNum) {
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if (packageNum < 0 || packageNum > 287 || !Number.isInteger(packageNum)) {
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console.error('Invalid package number, should be integer between 0 and 287');
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return null;
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}
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const point = this.timePoints.find(item => item.package === packageNum);
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return point ? point.HHmm : null;
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}
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/**
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* 从yyyy-MM-dd-HH-mm格式的时间字符串中提取HHmm部分
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* @param {string} datetime - 格式为"yyyy-MM-dd-HH-mm"的时间字符串，例如"2025-06-27-10-40"
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* @returns {string} 返回HHmm格式的时间字符串，例如"1040"
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*/
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getHHmmFromDateTime(datetime) {
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// 验证输入格式
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if (!/^\d{4}-\d{2}-\d{2}-\d{2}-\d{2}$/.test(datetime)) {
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console.error('Invalid datetime format, should be "yyyy-MM-dd-HH-mm"');
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return null;
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}
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// 分割字符串获取小时和分钟部分
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const parts = datetime.split('-');
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const hours = parts[3]; // 小时部分
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const minutes = parts[4]; // 分钟部分
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// 组合成HHmm格式
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return hours + minutes;
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}
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}
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// 导出单例
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const timePointUtils = new TimePointUtils();
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export default timePointUtils; |
