300 lines
11 KiB
JavaScript
300 lines
11 KiB
JavaScript
let ip = null;
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fetch("https://api.ipify.org?format=json").then(response => {
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if (response.ok) {
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return response.json();
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}
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throw new Error("Network response was not ok.");
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}).then(res => {
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ip = res.ip;
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}).catch(error => {
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if ('caches' in window) {
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caches.match('https://api.ipify.org?format=json').then(response => {
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if (response) {
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return response.json();
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}
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}).then(data => {
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if (ip === null && data !== undefined) {
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ip = JSON.parse(data).ip;
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}
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});
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}
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});
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let goodFortunes = [];
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let badFortunes = [];
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let special_events = [];
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let fortune_generated = false;
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// using async and await to prevent fetching the data too late...
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async function fetch_data() {
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await fetch("./json/fortune.json")
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.then(response => response.json())
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.then(data => {
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goodFortunes = data.goodFortunes;
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badFortunes = data.badFortunes;
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})
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await fetch("./json/special.json")
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.then(response => response.json())
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.then(data => {
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special_events = data.special_events;
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})
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}
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const textColorClass = ["good-fortune", "good-fortune", "good-fortune", "good-fortune", "good-fortune", "middle-fortune", "bad-fortune", "bad-fortune"];
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const fortuneStatus = ["大吉", "中吉", "小吉", "吉", "末吉", "中平", "凶", "大凶"];
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const chineseMonth = ["一", "二", "三", "四", "五", "六", "七", "八", "九", "十", "十一", "十二"];
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const week = ['日', '一', '二', '三', '四', '五', '六'];
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const title = `<span class="title" style="font-size:8vmin;"><b>今日運勢</b></span>`;
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const allGood = `<span class="bad-fortune" style="font-size:6vmin;"><b>萬事皆宜</b></span>`;
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const allBad = `<span class="good-fortune" style="font-size:6vmin;"><b>諸事不宜</b></span>`;
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// date
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const d = new Date();
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const date = d.getDate();
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const day = d.getDay();
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const month = d.getMonth() + 1;
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const year = d.getFullYear();
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function daysDiff(eventIndex) {
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// define the date right now and the special event date
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const startDate = new Date(year, month - 1, date);
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const endDate = new Date(special_events[eventIndex].year, special_events[eventIndex].month - 1, special_events[eventIndex].date);
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// calculate the difference in milliseconds and convert it to days
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const timeDiff = Math.ceil((endDate - startDate) / (1000 * 60 * 60 * 24));
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return timeDiff;
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}
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// pre-search jquery - save to a variable to improve performance
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const J_l_1_event = $('#l-1-event');
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const J_l_1_desc = $('#l-1-desc');
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const J_l_2_event= $('#l-2-event');
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const J_l_2_desc = $('#l-2-desc');
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const J_r_1_event = $('#r-1-event');
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const J_r_1_desc = $('#r-1-desc');
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const J_r_2_event= $('#r-2-event');
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const J_r_2_desc = $('#r-2-desc');
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const J_ip_to_fortune = $('#ip-to-fortune');
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let special = false;
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let special_events_index = 0;
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// init page
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async function init_page() {
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// fetch fortune.json and special.json
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await fetch_data();
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// hide the elements of show fortune page
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$('#result-page').hide();
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// show date before button pressed
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const showMonth = `<span class="date-color" style="font-size:10vmin; -webkit-writing-mode:vertical-lr;"><b>${chineseMonth[month - 1] + "月"}</b></span>`;
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const showDate = `<span class="date-color" style="font-size:25vmin;"><b>${("0" + date).slice(-2)}</b></span>`;
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const showDay = `<span class="date-color" style="font-size:10vmin; -webkit-writing-mode:vertical-lr; margin-right:10%;"><b>${"星期" + week[day]}</b></span>`;
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$('#month').html(showMonth);
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$('#date').html(showDate);
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$('#weekday').html(showDay);
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let showSpecialEventCount = 2, eventIndexPtr = 0;
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let eventIndexList = Array(showSpecialEventCount).fill(-1);
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// check if there is special event today
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for (let i = 0; i < special_events.length; i++) {
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if (daysDiff(i) > 0) {
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if (eventIndexPtr < showSpecialEventCount && eventIndexList[eventIndexPtr] == -1) {
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eventIndexList[eventIndexPtr] = i;
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eventIndexPtr++;
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}
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} else if (daysDiff(i) == 0) {
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special = true;
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special_events_index = i;
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}
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}
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// if there is upcoming event then show
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for (let eventIndex = 0; eventIndex < showSpecialEventCount; eventIndex++) {
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if (eventIndexList[eventIndex] != -1) {
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let days = daysDiff(eventIndexList[eventIndex]);
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let upcoming_event = `<span class="desc" style="font-size:5vmin;">距離<b class="special-event">${special_events[eventIndexList[eventIndex]].event}</b>還剩<b class="special-event">${days}</b>天</span>`;
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$(`#upcoming-event-${eventIndex + 1}`).html(upcoming_event)
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}
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}
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// show special event if today is a special day
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if (special) {
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let special_event_today = `<span class="desc" style="font-size:9vmin;">今日是<b class="good-fortune">${special_events[special_events_index].event}</b></span>`;
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$('#special-day').html(special_event_today);
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}
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let last_date_str = localStorage.getItem('last_date');
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if (last_date_str !== null && last_date_str !== undefined) {
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let now_date = new Date();
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let last_date = new Date(last_date_str);
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if (now_date.getFullYear() === last_date.getFullYear() && now_date.getMonth() === last_date.getMonth() && now_date.getDate() === last_date.getDate()) {
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fortune_generated = true;
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Appear();
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}
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}
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}
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// event bar
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const good_span = event => `<span class="good-fortune" style="font-size:5.6vmin;"><b>宜: </b>${event}</span>`;
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const bad_span = event => `<span class="bad-fortune" style="font-size:5.6vmin;"><b>忌: </b>${event}</span>`;
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const desc_span = desc => `<span class="desc" style="font-size:3.5vmin;">${desc}</span>`;
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function Appear() {
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$('#title').html(title);
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$('#btn').html('打卡成功');
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// disable the btn
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$('#btn').attr("disabled", "disabled");
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//change page
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$('#init-page').hide();
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$('#result-page').show();
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// some lengths
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const goodLen = goodFortunes.length;
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const badLen = badFortunes.length;
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const statusLen = fortuneStatus.length;
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let status_index = -1;
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let seed1 = -1;
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let seed2 = -1;
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if (!fortune_generated) {
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// transform ip to four numbers
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let num = ip.split(".").map(num => parseInt(num));
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// TODO: improve the hash process
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let hashDate = Math.round(Math.log10(year * ((month << (Math.log10(num[3]) + day - 1)) * (date << Math.log10(num[2] << day)))));
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seed1 = (num[0] >> hashDate) * (num[1] >> Math.min(hashDate, 2)) + (num[2] << 1) * (num[3] >> 3) + (date << 3) * (month << hashDate) + (year * day) >> 2;
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seed2 = (num[0] << (hashDate + 2)) * (num[1] << hashDate) + (num[2] << 1) * (num[3] << 2) + (date << (hashDate - 1)) * (month << 4) + year >> hashDate + (date * day) >> 1;
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// decide the status
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status_index = ((seed1 + seed2) % statusLen + statusLen) % statusLen;
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// update last record
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localStorage.setItem('last_date', d.toISOString());
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localStorage.setItem('last_status_index', status_index.toString());
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localStorage.setItem('last_seed1', seed1.toString());
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localStorage.setItem('last_seed2', seed2.toString());
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} else {
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status_index = parseInt(localStorage.getItem('last_status_index'));
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seed1 = parseInt(localStorage.getItem('last_seed1'));
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seed2 = parseInt(localStorage.getItem('last_seed2'));
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}
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let status = `<span class=${textColorClass[status_index]} style="font-size:12vmin;"><b>§ ${fortuneStatus[status_index]} §</b></span>`;
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if (special) {
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status_index = special_events[special_events_index].status_index;
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let special_status = `<span class=${textColorClass[status_index]} style="font-size:12vmin;"><b>§ ${fortuneStatus[status_index]} §</b></span>`;
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J_ip_to_fortune.html(special_status);
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}
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else {
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J_ip_to_fortune.html(status);
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}
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// make sure the events won't collide
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let set = new Set();
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let l1 = (seed1 % goodLen + goodLen) % goodLen;
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set.add(goodFortunes[l1].event);
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let l2 = (((seed1 << 1) + date) % goodLen + goodLen) % goodLen;
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while (set.has(goodFortunes[l2].event)) {
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l2 = (l2 + 1) % goodLen;
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}
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set.add(goodFortunes[l2].event);
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let r1 = (((seed1 >> 1) + (d.getMonth() << 3)) % badLen + badLen) % badLen;
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while (set.has(badFortunes[r1].event)) {
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r1 = (r1 + 2) % badLen;
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}
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set.add(badFortunes[r1].event);
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let r2 = ((((((seed1 << 3) + (d.getFullYear() >> 5) * (date << 2)) % badLen) * seed2) >> 6) % badLen + badLen) % badLen;
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while (set.has(badFortunes[r2].event)) {
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r2 = (r2 + 1) % badLen;
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}
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// organize the stuffs below this line...
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const l1_desc_list = goodFortunes[l1].description;
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const l2_desc_list = goodFortunes[l2].description;
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const r1_desc_list = badFortunes[r1].description;
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const r2_desc_list = badFortunes[r2].description;
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let l_1_event = good_span(goodFortunes[l1].event);
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let l_1_desc = desc_span(l1_desc_list[Math.abs(seed1) % l1_desc_list.length]);
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let l_2_event = good_span(goodFortunes[l2].event);
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let l_2_desc = desc_span(l2_desc_list[Math.abs(seed2) % l2_desc_list.length]);
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let r_1_event = bad_span(badFortunes[r1].event);
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let r_1_desc = desc_span(r1_desc_list[Math.abs(seed1) % r1_desc_list.length]);
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let r_2_event = bad_span(badFortunes[r2].event);
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let r_2_desc = desc_span(r2_desc_list[Math.abs(seed2) % r2_desc_list.length]);
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if (special) {
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// instead clear variable name, use short variable name for here... cuz it's too repetitive
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let Data = special_events[special_events_index];
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if (status_index == 0) {
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J_r_1_event.html(allGood);
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} else {
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J_r_1_event.html(bad_span(Data.badFortunes.r_1_event));
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J_r_1_desc.html(desc_span(Data.badFortunes.r_1_desc));
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J_r_2_event.html(bad_span(Data.badFortunes.r_2_event));
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J_r_2_desc.html(desc_span(Data.badFortunes.r_2_desc));
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if (Data.badFortunes.r_1_event.length == 0) {
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J_r_1_event.html(r_1_event);
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J_r_1_desc.html(r_1_desc);
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}
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if (Data.badFortunes.r_2_event.length == 0) {
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J_r_2_event.html(r_2_event);
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J_r_2_desc.html(r_2_desc);
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}
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}
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if (status_index == statusLen - 1) {
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J_l_1_event.html(allBad);
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} else {
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J_l_1_event.html(good_span(Data.goodFortunes.l_1_event));
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J_l_1_desc.html(desc_span(Data.goodFortunes.l_1_desc));
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J_l_2_event.html(good_span(Data.goodFortunes.l_2_event));
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J_l_2_desc.html(desc_span(Data.goodFortunes.l_2_desc));
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if (Data.goodFortunes.l_1_event.length == 0) {
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J_l_1_event.html(l_1_event);
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J_l_1_desc.html(l_1_desc);
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}
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if (Data.goodFortunes.l_2_event.length == 0) {
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J_l_2_event.html(l_2_event);
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J_l_2_desc.html(l_2_desc);
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}
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}
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}
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else{
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if (status_index == 0) {
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J_r_1_event.html(allGood);
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} else {
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J_r_1_event.html(r_1_event);
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J_r_1_desc.html(r_1_desc);
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J_r_2_event.html(r_2_event);
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J_r_2_desc.html(r_2_desc);
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}
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if (status_index == statusLen - 1) {
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J_l_1_event.html(allBad);
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} else {
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J_l_1_event.html(l_1_event);
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J_l_1_desc.html(l_1_desc);
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J_l_2_event.html(l_2_event);
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J_l_2_desc.html(l_2_desc);
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}
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}
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$("#copy-result").removeClass("d-none");
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}
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function getLuck() {
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Update();
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}
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init_page();
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