//项目所需以每周五为周第一天  周四结束   可在createYear 方法中修改
let dayTime = 1000 * 60 * 60 * 24;

export const createYear = (year) => {
    let arr = [];
    let yearStart = new Date(`${year}-01-01`);
    let yearEnd = new Date(`${year}-12-31`);
    let startTime;
    if (yearStart.getDay() < 5) {
        startTime = yearStart.getTime() + (5 - yearStart.getDay()) * dayTime;
    } else if (yearStart.getDay() > 5) {
        startTime = yearStart.getTime() + 6 * dayTime;
    } else {
        startTime = yearStart.getTime();
    }
    let endTime = yearEnd.getDay() < 4 ? yearEnd.getTime() + (4 - yearEnd.getDay()) * dayTime : yearEnd
        .getTime();
    formatWeek(startTime, endTime, arr, 0);
    return arr
}

function formatWeek(start, end, weeks, index) {
    let currentTimes = new Date().getTime();
    weeks.push({
        week: index + 1,
        value: `${formatDate(start)}至${formatDate(start  + 6 * dayTime)}`,
        weekValue: `第${index+1}周`,
        start: formatDate(start),
        end: formatDate(start + 6 * dayTime)
    })
    if (start + 6 * dayTime < currentTimes && start + 6 * dayTime < end) {
        formatWeek(start + 7 * dayTime, end, weeks, index + 1)
    }
}

function formatDate(timer) {
    let times = new Date(timer);
    let [y, m, d] = [times.getFullYear(), times.getMonth() + 1, times.getDate()];
    return `${y}-${m<10?'0'+m:m}-${d<10?'0'+d:d}`
}