function formatTime(time) {
	if (typeof time !== 'number' || time < 0) {
		return time
	}

	var hour = parseInt(time / 3600)
	time = time % 3600
	var minute = parseInt(time / 60)
	time = time % 60
	var second = time

	return ([hour, minute, second]).map(function (n) {
		n = n.toString()
		return n[1] ? n : '0' + n
	}).join(':')
}

	
function formatTimeByDuration(result, timeShowBlock = 1) {
	let h = Math.floor(result / 3600) < 10 ? '0' + Math.floor(result / 3600) : Math.floor(result / 3600);
	let m = Math.floor((result / 60 % 60)) < 10 ? '0' + Math.floor((result / 60 % 60)) : Math.floor((result / 60 % 60));
	let s = Math.floor((result % 60)) < 10 ? '0' + Math.floor((result % 60)) : Math.floor((result % 60));
	
	if (timeShowBlock === 2)
		return result = h + ':' + m + ':' + s;
	else
		return result = m + ':' + s;
}

function formatLocation(longitude, latitude) {
	if (typeof longitude === 'string' && typeof latitude === 'string') {
		longitude = parseFloat(longitude)
		latitude = parseFloat(latitude)
	}

	longitude = longitude.toFixed(2)
	latitude = latitude.toFixed(2)

	return {
		longitude: longitude.toString().split('.'),
		latitude: latitude.toString().split('.')
	}
}
var dateUtils = {
	UNITS: {
		'年': 31557600000,
		'月': 2629800000,
		'天': 86400000,
		'小时': 3600000,
		'分钟': 60000,
		'秒': 1000
	},
	humanize: function (milliseconds) {
		var humanize = '';
		for (var key in this.UNITS) {
			if (milliseconds >= this.UNITS[key]) {
				humanize = Math.floor(milliseconds / this.UNITS[key]) + key + '前';
				break;
			}
		}
		return humanize || '刚刚';
	},
	format: function (dateStr) {
		var date = this.parse(dateStr)
		var diff = Date.now() - date.getTime();
		if (diff < this.UNITS['天']) {
			return this.humanize(diff);
		}
		var _format = function (number) {
			return (number < 10 ? ('0' + number) : number);
		};
		return date.getFullYear() + '/' + _format(date.getMonth() + 1) + '/' + _format(date.getDay()) + '-' +
			_format(date.getHours()) + ':' + _format(date.getMinutes());
	},
	parse: function (str) { //将"yyyy-mm-dd HH:MM:ss"格式的字符串，转化为一个Date对象
		var a = str.split(/[^0-9]/);
		return new Date(a[0], a[1] - 1, a[2], a[3], a[4], a[5]);
	}
};

function debounce(func, wait, immediate) {
    let timeout, result;

    return function() {
      let context = this;
      let args = arguments;
      if (timeout) clearTimeout(timeout);

      let later = function() {
        timeout = null;
        if (!immediate) result = func.apply(context, args);
      };

      let callNow = immediate && !timeout;
      timeout = setTimeout(later, wait);
      if (callNow) result = func.apply(this, args);

      return result;
    };
  }

export default {
	formatTime: formatTime,
	formatLocation: formatLocation,
	dateUtils: dateUtils,
	debounce: debounce,
	formatTimeByDuration: formatTimeByDuration
}