//登录存储信息
const setLoginData=function(obj){
	uni.setStorageSync("demu_mes_user_name",obj.mes_user_name); 
	uni.setStorageSync("mes_token",obj.mes_token);
}

const removeLoginData=function(){
	uni.removeStorageSync("demu_mes_user_name"); 
	uni.removeStorageSync("mes_token");
}
// 重定义 弹窗
const toast = function(params){
	uni.showToast({
		title:params.text,
		icon:params.type,
		duration:1000
	})
}

// 0~9 对应小数转换
const numberToChineseLower = function(num) {
    const chineseMonths = {
		'1': '一',
		'2': '二',
		'3': '三',
		'4': '四',
		'5': '五',
		'6': '六',
		'7': '七',
		'8': '八',
		'9': '九',
		'10': '十',
		'11': '十一',
		'12': '十二'
	};
	return chineseMonths[num] || '';
}

const getToday = function() {
    let today = new Date();
    let year = today.getFullYear();
    let month = today.getMonth() + 1;
    let day = today.getDate();

    let formattedMonth = month < 10 ? '0' + month : month;
    let formattedDay = day < 10 ? '0' + day : day;

    // 返回格式化后的日期字符串，格式为 yyyy-mm-dd
    return year + '-' + formattedMonth + '-' + formattedDay;
}

const getDatesOfWeek = function() {
	var now = new Date();
	// 获取当前日期是周几，0表示周日，1表示周一，以此类推
	var dayOfWeek = now.getDay();
	var monday = new Date(now.setDate(now.getDate() - dayOfWeek + (dayOfWeek === 0 ? 0 : 1)));
	var datesOfWeek = [];
	for (var i = 0; i < 7; i++) {
		var currentDate = new Date(monday.getTime() + i * 24 * 60 * 60 * 1000);
		var weekdays = ['日', '一', '二', '三', '四', '五', '六'];
		var weekday = weekdays[currentDate.getDay()];
		
		var dateInfo = {
			date: currentDate.toISOString().split('T')[0],
			name: weekday
		};
		datesOfWeek.push(dateInfo);
	}
	return datesOfWeek;
}

// 往前一周
const getPreviousWeekDatesWithDays = function(date=null) {
	var now = new Date(date);
	var lastMonday = new Date(now);
	lastMonday.setDate(lastMonday.getDate() - 7);
	var datesAndDays = [];

	for (var i = 0; i < 7; i++) {
		var currentDate = new Date(lastMonday.getTime() + i * 24 * 60 * 60 * 1000);
		var weekdays = ['日', '一', '二', '三', '四', '五', '六'];
		datesAndDays.push({
			date: currentDate.toISOString().split('T')[0],
			name: weekdays[currentDate.getDay()]
		});
	}

	return datesAndDays;
}

// 往后一周
const getNextWeekDatesWithDays = function(date = null) {
	var now = new Date(date);
	var nextMonday = new Date(now);
	nextMonday.setDate(nextMonday.getDate() + (8 - now.getDay()) % 7);
	var datesAndDays = [];

	for (var i = 0; i < 7; i++) {
		var currentDate = new Date(nextMonday.getTime() + i * 24 * 60 * 60 * 1000);
		var weekdays = ['日', '一', '二', '三', '四', '五', '六'];
		datesAndDays.push({
		  date: currentDate.toISOString().split('T')[0],
		  name: weekdays[currentDate.getDay()]
		});
	}

	return datesAndDays;
}

// 获取本月日期
// year, month
const getWeeksOfMonth = function() {
	var now = new Date();
	var year = now.getFullYear();
	var month = now.getMonth() + 1;
	const startDate = new Date(year, month - 1, 1);
	const endDate = new Date(year, month, 0);
	const startDateDayOfWeek = startDate.getDay();  // 获取本月第一天是周几
	const totalDays = endDate.getDate(); 			// 获取本月总天数

	let weeks = [];
	let currentWeek = [];
	let currentDate = new Date(startDate);

	// 填充到本周开始
	for (let i = 0; i < startDateDayOfWeek; i++) {
		currentWeek.push(null);
	}

	while (currentDate <= endDate) {
		let textMonth = month<10?'0'+month:month;
		let textDate = currentDate.getDate()<10?'0'+currentDate.getDate():currentDate.getDate();
		currentWeek.push({
			date: year +'-'+ textMonth +'-'+ textDate,
			name: ['一', '二', '三', '四', '五', '六','日'][currentDate.getDay()]
		});
		currentDate.setDate(currentDate.getDate() + 1);

		// 当前周已满，开始新周
		if (currentWeek.length === 7) {
		  weeks.push(currentWeek);
		  currentWeek = [];
		}
	}

	// 处理最后不满一周的情况
	if (currentWeek.length > 0) {
		while (currentWeek.length < 7) {
		  currentWeek.push(null);
		}
		weeks.push(currentWeek);
	}

	return weeks;
}

// 往前推一个月
const getPreviousMonthGroupedByWeek = function(date = null) {
    let now = new Date(date);
    var year = now.getFullYear();
    var month = now.getMonth();
    // 如果当前月份是1月，则年份减1，月份变成12月
    if (month === 0) {
        year--;
        month = 11;
    } else {
        month--;
    }
    let prevMonthFirstDay = new Date(year, month, 1); 		// 获取上一个月的第一天
    let prevMonthLastDay = new Date(year, month + 1, 0); 	// 获取上一个月的最后一天
    let currentDate = new Date(prevMonthFirstDay); 			// 从上一个月的第一天开始
    let weeksData = [];
    let currentWeek = [];

    const weekdays = ['一', '二', '三', '四', '五', '六', '日'];

    while (currentDate <= prevMonthLastDay) {
        // 获取当前日期和星期几
        let date = currentDate.getDate();
        let weekdayIndex = currentDate.getDay();
		
		let textMonth = month<9?'0'+(month+1):(month+1);
		let textDate = date<10?'0'+date:date;
        currentWeek.push({
            date: year + '-' + textMonth + '-' + textDate,
            name: weekdays[weekdayIndex]
        });

        // 如果到达了周日或者已经是最后一日，将当前周添加到weeksData，并重置currentWeek
        if (weekdayIndex === 6 || currentDate.getTime() === prevMonthLastDay.getTime()) {
            weeksData.push(currentWeek);
            currentWeek = [];
        }

        // 前往下一天
        currentDate.setDate(currentDate.getDate() + 1);
    }

    return weeksData;
}

const getNextMonthGroupedByWeek = function(date = null) {
    let now = new Date(date);
    var year = now.getFullYear();
    var month = now.getMonth();
    if (month === 11) {
        year++;
        month = 0;
    } else {
        month++;
    }
    let nextMonthFirstDay = new Date(year, month, 1); 		// 获取下一个月的第一天
    let nextMonthLastDay = new Date(year, month + 1, 0); 	// 获取下一个月的最后一天
    let currentDate = new Date(nextMonthFirstDay); 			// 从下一个月的第一天开始
    let weeksData = []; 
    let currentWeek = [];

    const weekdays = ['一', '二', '三', '四', '五', '六', '日'];

    while (currentDate <= nextMonthLastDay) {
        let date = currentDate.getDate();
        let weekdayIndex = currentDate.getDay();
		
		let textMonth = month<9?'0'+(month+1):(month+1);
		let textDate = date<10?'0'+date:date;
        currentWeek.push({
            date: year + '-' + textMonth + '-' + textDate,
            name: weekdays[weekdayIndex]
        });

        if (weekdayIndex === 6 || currentDate.getTime() === nextMonthLastDay.getTime()) {
            weeksData.push(currentWeek);
            currentWeek = [];
        }

        // 前往下一天
        currentDate.setDate(currentDate.getDate() + 1);
    }

    return weeksData;
}

// 上一个月有几周
const getPreviousMonthWeekCount = function(date = null) {
    let now = new Date(date);
    var year = now.getFullYear();
    var month = now.getMonth();
    if (month === 0) {
        year--;
        month = 11;
    } else {
        month--;
    }
    let prevMonthFirstDay = new Date(year, month, 1); 		// 获取上一个月的第一天
    let prevMonthLastDay = new Date(year, month + 1, 0); 	// 获取上一个月的最后一天
    let totalWeeks = 0;

    // 计算上一个月有几周
    let currentDate = new Date(prevMonthFirstDay);
    while (currentDate <= prevMonthLastDay) {
        let weekdayIndex = currentDate.getDay();
        if (weekdayIndex === 6 || currentDate.getTime() === prevMonthLastDay.getTime()) {
            totalWeeks++;
        }
        currentDate.setDate(currentDate.getDate() + 1);
    }

    return totalWeeks;
}


// 下个月有几周
const getNextMonthWeekCount = function(date = null) {
    let now = new Date(date);
    var year = now.getFullYear();
    var month = now.getMonth();
    if (month === 11) {
        year++;
        month = 0;
    } else {
        month++;
    }
    let nextMonthFirstDay = new Date(year, month, 1); 		// 获取下一个月的第一天
    let nextMonthLastDay = new Date(year, month + 1, 0); 	// 获取下一个月的最后一天
    let totalWeeks = 0;

    let currentDate = new Date(nextMonthFirstDay);
    while (currentDate <= nextMonthLastDay) {
        let weekdayIndex = currentDate.getDay();
        if (weekdayIndex === 6 || currentDate.getTime() === nextMonthLastDay.getTime()) {
            totalWeeks++;
        }
        // 前往下一天
        currentDate.setDate(currentDate.getDate() + 1);
    }

    return totalWeeks;
}

// 获取当前的日期
const getCurrentYearData = function() {
    let today = new Date(); 		// 获取当前日期
    let year = today.getFullYear(); 	// 获取年份
    let yearData = []; 					// 存储当前年份的数据
	
    // 循环遍历每个月份
    for (let month = 0; month < 12; month++) {
		let list = getCurrentMonthData(year,month+1);
        let monthData = {
            month: month + 1, 	// 月份从 1 开始
            weeks: list, 		// 存储该月份的所有周数据
        };

        // 将该月份的数据添加到当前年份的数据中
        yearData.push(monthData);
    }

    return yearData;
}

// 获取上一年的日期
const getPreviousYearData = function(date = null) {
    let currentDate = new Date(date); 						// 获取指定日期或者当前日期
    currentDate.setFullYear(currentDate.getFullYear() - 1); // 获取指定日期的上一年日期
    let year = currentDate.getFullYear(); 					// 获取年份
    let yearData = []; 										// 存储指定日期的上一年的数据
    
    for (let month = 0; month < 12; month++) {
        let list = getCurrentMonthData(year, month + 1);
        let monthData = {
            month: month + 1,
            weeks: list,
        };

        yearData.push(monthData);
    }

    return yearData;
}

// 获取下一年的日期
const getNextYearData = function(date = null) {
    let currentDate = new Date(date); 						// 获取指定日期或者当前日期
    currentDate.setFullYear(currentDate.getFullYear() + 1); // 获取指定日期的上一年日期
    let year = currentDate.getFullYear(); 					// 获取年份
    let yearData = []; 										// 存储指定日期的上一年的数据
    
    for (let month = 0; month < 12; month++) {
        let list = getCurrentMonthData(year, month + 1);
        let monthData = {
            month: month + 1,
            weeks: list,
        };

        yearData.push(monthData);
    }

    return yearData;
}


// 获取当前月的所有周
const getCurrentMonthData = function(year,month) {
	const startDate = new Date(year, month - 1, 1);
	const endDate = new Date(year, month, 0);
	const startDateDayOfWeek = startDate.getDay();  // 获取本月第一天是周几
	const totalDays = endDate.getDate(); 			// 获取本月总天数

	let weeks = [];
	let currentWeek = [];
	let currentDate = new Date(startDate);

	// 填充到本周开始
	for (let i = 0; i < startDateDayOfWeek; i++) {
		currentWeek.push(null);
	}
	while (currentDate <= endDate) {
		let textMonth = month<10?'0'+month:month;
		let textDate = currentDate.getDate()<10?'0'+currentDate.getDate():currentDate.getDate();
		currentWeek.push({
			date: year +'-'+ textMonth +'-'+ textDate,
			name: ['一', '二', '三', '四', '五', '六','日'][currentDate.getDay()]
		});
		currentDate.setDate(currentDate.getDate() + 1);

		// 当前周已满，开始新周
		if (currentWeek.length === 7) {
		  weeks.push(currentWeek);
		  currentWeek = [];
		}
	}

	// 处理最后不满一周的情况
	if (currentWeek.length > 0) {
		while (currentWeek.length < 7) {
		  currentWeek.push(null);
		}
		weeks.push(currentWeek);
	}
	return weeks;
}


export default {
	setLoginData,
	removeLoginData,
	toast,
	numberToChineseLower,
	getToday,
	getDatesOfWeek,
	getPreviousWeekDatesWithDays,
	getNextWeekDatesWithDays,
	getWeeksOfMonth,
	getPreviousMonthGroupedByWeek,
	getNextMonthGroupedByWeek,
	getPreviousMonthWeekCount,
	getNextMonthWeekCount,
	getCurrentYearData,
	getPreviousYearData,
	getNextYearData,
};