[PR] Merge pull request #62 from LS-KR/main

[O] Reduce the amount of reading at night

src/logic/sunset.ts

@@ -0,0 +1,51 @@
+export interface Time {
+    hour: number;
+    minute: number;
+    second: number;
+}
+
+function degToRad(deg: number): number {
+    return deg * Math.PI / 180;
+}
+
+function radToDeg(rad: number): number {
+    return rad * 180.0 / Math.PI;
+}
+
+function isLeap(year: number): boolean {
+    return (year % 400 == 0) || ((year % 4 == 0) && (year % 100 != 0));
+}
+
+function numberOfDay(year: number, month: number, day: number): number {
+    const days = [0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31]
+    let n = day;
+    if (month > 2) n += isLeap(year) ? 1 : 0;
+    while ((--month) > 0) n += days[month];
+    return n;
+}
+
+function sunset(year: number, month: number, day: number, latitude: number): number {
+    const dec = -degToRad(23.44) * Math.cos(2 * Math.PI / (365 + (isLeap(year) ? 1 : 0)) * (numberOfDay(year, month, day) + 10));
+    return -Math.tan(degToRad(latitude)) * Math.tan(dec);
+}
+
+function radToTime(rad: number): Time {
+    if (rad > Math.PI) rad -= 2 * Math.PI;
+    const sec = Math.floor(43200 + (rad * 43200 / Math.PI));
+    const hour = Math.floor(sec / 3600);
+    const minute = Math.floor((sec - 3600 * hour) / 60);
+    const second = Math.floor((sec - 3600 * hour) % 60);
+    return {
+        hour: hour,
+        minute: minute,
+        second: second,
+    }
+}
+
+export function sunsetTime(year: number, month: number, day: number, latitude: number): Time {
+    return radToTime(Math.acos(sunset(year, month, day, latitude)));
+}
+
+export function sunriseTime(year: number, month: number, day: number, latitude: number): Time {
+    return radToTime(-Math.acos(sunset(year, month, day, latitude)));
+}

src/views/Profile.vue

@@ -20,6 +20,7 @@ import {balloons, dataHost, Lang, limit, peopleUrl, replaceUrlVars, setLang, t}
 import {parsePeopleJson, Person} from "@/logic/data";
 import {handleEasterEgg} from '@/logic/easterEgg'
 import {fetchWithLang, randint, scheduledTask, trim} from "@/logic/helper";
+import {sunriseTime, sunsetTime} from "@/logic/sunset";
 import ProfileComments from "@/views/ProfileComments.vue";
 import Swal from 'sweetalert2';
 import urljoin from "url-join";
@@ -90,7 +91,29 @@ export default class Profile extends Vue {
     checkViewLimit(): boolean | void {
         if (this.screenshotMode) return
 
-        const config = limit
+        const config = (() => {
+            const now = new Date();
+            const sunset = sunsetTime(now.getFullYear(), now.getMonth() + 1, now.getDate(), 45.0);
+            const sunrise = sunriseTime(now.getFullYear(), now.getMonth() + 1, now.getDate(), 45.0);
+
+            if (now.getTime() > (new Date(now.getFullYear(), now.getMonth(), now.getDate(), sunset.hour + 2, sunset.minute, sunset.second).getTime())) {
+                return {
+                    warningLimit: Math.floor(limit.warningLimit / 2),
+                    errorLimit: Math.floor(limit.errorLimit / 2),
+                    cooldown: limit.cooldown
+                }
+            }
+            else if (now.getTime() < (new Date(now.getFullYear(), now.getMonth(), now.getDate(), Math.floor(sunrise.hour * 0.5 + 2), sunrise.minute, sunrise.second).getTime())) {
+                return {
+                    warningLimit: Math.floor(limit.warningLimit / 2),
+                    errorLimit: Math.floor(limit.errorLimit / 2),
+                    cooldown: limit.cooldown
+                }
+            }
+            return limit
+        })()
+
+        console.log(config)
 
         const now = new Date()
         const [_time, _entries] = [localStorage.getItem("view_limit_time"), localStorage.getItem("view_limit_entries")]