//本地模拟已签到日期天数
var localDate = {
    date: []
}
for(var j = 0; j < 30; j++) {
    var a = Math.ceil(Math.random() * 11);
    if(a < 10) {
        a = "0" + a;
    }
    var b = Math.ceil(Math.random() * 30);
    if(b < 10) {
        b = "0" + b;
    }
    var c = a.toString() + b.toString();
    localDate.date.push(c);
}

//初始化日期数据
var slidate = new Date();
var x = slidate.getMonth() + 1;
var n = slidate.getMonth();
var monthFirst = new Date(slidate.getFullYear(), parseInt(n), 1).getDay(); //获取当月的1日等于星期几
var m = slidate.getMonth() + 1;
var d = new Date(slidate.getFullYear(), parseInt(m), 0); //获取月
var conter = d.getDate(); //获取当前月的天数
var monthNum = "0" + (slidate.getMonth() + 1) + "月";
var monthCheck = (slidate.getMonth() + 1);
var y = slidate.getDate();

function initall() {
    dateHandler(monthFirst, d, conter, monthNum);
    checkDate(monthCheck);
}

function dateHandler(monthFirst, d, conter, monthNum) {
    var u = 1;
    var blank = true;
    var $tbody = $('#tbody'),
        $month = $("#month"),
        _nullnei = '';
    var p = document.createElement("p");
    var monthText = document.createTextNode(monthNum);
    p.appendChild(monthText);
    $month.append(p);
    //遍历日历网格
    for(var i = 1; i <= 6; i++) {
        _nullnei += "<tr>";
        for(var j = 1; j <= 7; j++) {
            _nullnei += '<td></td>';
        }
        _nullnei += "</tr>";
    }
    $tbody.html(_nullnei);

    //遍历网格内容
    var $slitd = $tbody.find("td");
    for(var i = 0; i < conter; i++) {
        $slitd.eq(i + monthFirst).html("<p>" + parseInt(i + 1) + "</p>")
    }
    //给有日期的td加上id
    var dayBlock = document.getElementsByTagName("td");
    for(var i = 0; i < dayBlock.length; i++) {
        if(dayBlock[i].textContent != "") {
            dayBlock[i].setAttribute("id", "td" + u);
            u++;
        }
    }
    //若日期不足排满每一行的tr，则删除最后一个tr
    var blankTr = document.getElementsByTagName("tr");
    var blankTd = blankTr[5].getElementsByTagName("td");
    for(var i = 0; i < blankTd.length; i++) {
        if(blankTd[i].textContent != "") {
            blank = false;
        }
    }
    if(blank == true) {
        blankTr[5].remove();
    }
}

function checkDate(prep) {
    var dateArray = [];
    var newArray = [];
    //删除不是本月的日期
    for(var i = 0; i < localDate.date.length; i++) {
        dateArray.push(localDate.date[i]);
    }
    for(var i = 0; i < dateArray.length; i++) {
        if(dateArray[i].charAt(1) != prep) {
            dateArray[i] = undefined;
        }
    }
    for(var i = 0; i < dateArray.length; i++) {
        if(dateArray[i] != undefined) {
            newArray.push(dateArray[i]);
        }
    }
    //遍历数组为已签到日期添加class
//        for(var i = 0; i < newArray.length; i++) {
//            if(newArray[i].charAt(2) == 0) {
//                for(var j = 0; j < 10; j++) {
//                    if(newArray[i].charAt(3) == j) {
//                        var checked = "#td" + j;
//                        $(checked).addClass("qiandao");
//                    }
//                }
//            } else if(newArray[i].charAt(2) == 1) {
//                for(var j = 0; j < 10; j++) {
//                    if(newArray[i].charAt(3) == j) {
//                        var checked = "#td1" + j;
//                        $(checked).addClass("qiandao");
//                    }
//                }
//            } else {
//                for(var j = 0; j < 10; j++) {
//                    if(newArray[i].charAt(3) == j) {
//                        var checked = "#td2" + j;
//                        $(checked).addClass("qiandao");
//                    }
//                }
//            }
//        }
}
//当天签到添加样式
$("#button").on("click", function() {
    $("tr").remove();
    $("p").remove();
    dateHandler(monthFirst, d, conter, monthNum);
    checkDate(monthCheck);
    var thisDay = "#td" + y;
    var checkPic = false;
    if(m > 10 && y < 10) {
        var thisBlock = m.toString() + y.toString();
    } else if(m < 10 && y > 10){
        var thisBlock = "0" + m.toString() + y.toString();
    }else if(m > 10 && y < 10){
        var thisBlock = m.toString() + "0" + y.toString();
    }else if(m < 10 && y < 10){
        var thisBlock = "0" + m.toString() + "0" + y.toString();
    }
    for(var e = 0; e < localDate.date.length; e++) {
        if(localDate.date[e] === thisBlock) {
            checkPic = true;
        }
    }
    if(checkPic == true) {
        alert("您今天已经签到了！");
       $(thisDay).addClass("sign_in");
       return false;
    } else {
        $(thisDay).addClass("sign_in");
        alert("已签到！");
        localDate.date.push(thisBlock);
    }
})

//查询已签到天数
$("#button2").on("click", function() {
    alert("您已经签到了" + localDate.date.length + "天！");
})
//查询历史记录
$("#button3").on("click", function() {
    $("tr").remove();
    $("p").remove();
    if(m > 0 && n > 0) {
        m--, n--;
    }
    var monthFirst = new Date(slidate.getFullYear(), parseInt(n), 1).getDay(); //获取当月的1日等于星期几
    var d = new Date(slidate.getFullYear(), parseInt(m), 0); //获取月
    var conter = d.getDate(); //获取当前月的天数
    var monthNum = "0" + (m) + "月";
    var monthCheck = m;
    dateHandler(monthFirst, d, conter, monthNum);
    checkDate(monthCheck);
})
//返回上月记录
$("#button4").on("click", function() {
    $("tr").remove();
    $("p").remove();
    if(m < x) {
        m++, n++;
    }
    var monthFirst = new Date(slidate.getFullYear(), parseInt(n), 1).getDay(); //获取当月的1日等于星期几
    var d = new Date(slidate.getFullYear(), parseInt(m), 0); //获取月
    var conter = d.getDate(); //获取当前月的天数
    var monthNum = "0" + (m) + "月";
    var monthCheck = m;
    dateHandler(monthFirst, d, conter, monthNum);
    checkDate(monthCheck);
})

window.addEventListener("load", initall, false);