add auto seasonal lists

script.js

@@ -15,6 +15,19 @@ let plotMaxLength = 550; // Maximum number of characters in the plot
 let trailerMaxLength = 0; // Default value 0; length measured in ms, set to 0 to disable, could be used instead of SponsorBlock
 let startTrailerMuted = true; // Default value true; set to false to start the video unmuted
 
+// Seasonal lists configuration
+let useSeasonalLists = false; // Set to true to enable automatic seasonal list switching
+const seasonalLists = {
+    spring: 'spring_list.txt',        // spring (march-may)
+    summer: 'summer_list.txt',        // summer (june-august)
+    autumn: 'autumn_list.txt',        // autumn (september-november)
+    winter: 'winter_list.txt',        // winter (december-february)
+    newyear: 'newyear_list.txt',      // new year (1.-7. januar)
+    valentine: 'valentine_list.txt',   // valentines day (10.-20. februar)
+    easter: 'easter_list.txt',        // easter (variable dates, March-April)
+    halloween: 'halloween_list.txt'   // halloween (20.-31. october)
+};
+
 
 // Language specific strings
 // currently implemented: en, de, fr, es, it, pl, nl
@@ -91,6 +104,78 @@ const setLanguage = (language) => {
 
 const languageIndex = setLanguage(browserLanguage);
 
+// Seasonal list detection
+const getCurrentSeason = () => {
+    if (!useSeasonalLists) {
+        return null;
+    }
+    
+    const now = new Date();
+    const month = now.getMonth() + 1; // 1-12
+    const day = now.getDate();
+    
+    // Special events (take precedence over seasons)
+    // new year: 1-7 january
+    if (month === 1 && day <= 7) return 'newyear';
+    
+    // valentines day: 10-20 february
+    if (month === 2 && day >= 10 && day <= 20) return 'valentine';
+    
+    // halloween: 20-31 cotober
+    if (month === 10 && day >= 20) return 'halloween';
+    
+    // Easter calculation (simplified - around March-April)
+    const easterStart = getEasterPeriod(now.getFullYear());
+    if (isInEasterPeriod(now, easterStart)) return 'easter';
+    
+    // Regular seasons
+    if (month >= 3 && month <= 5) return 'spring';     // march-may
+    if (month >= 6 && month <= 8) return 'summer';     // june-august
+    if (month >= 9 && month <= 11) return 'autumn';    // september-november
+    if (month === 12 || month <= 2) return 'winter';   // december-february
+    
+    return null;
+};
+
+// Simplified Easter calculation (Western Easter)
+const getEasterPeriod = (year) => {
+    const a = year % 19;
+    const b = Math.floor(year / 100);
+    const c = year % 100;
+    const d = Math.floor(b / 4);
+    const e = b % 4;
+    const f = Math.floor((b + 8) / 25);
+    const g = Math.floor((b - f + 1) / 3);
+    const h = (19 * a + b - d - g + 15) % 30;
+    const i = Math.floor(c / 4);
+    const k = c % 4;
+    const l = (32 + 2 * e + 2 * i - h - k) % 7;
+    const m = Math.floor((a + 11 * h + 22 * l) / 451);
+    const month = Math.floor((h + l - 7 * m + 114) / 31);
+    const day = ((h + l - 7 * m + 114) % 31) + 1;
+    
+    return { month, day };
+};
+
+// Check if current date is in Easter period (2 weeks around Easter)
+const isInEasterPeriod = (currentDate, easter) => {
+    const easterDate = new Date(currentDate.getFullYear(), easter.month - 1, easter.day);
+    const timeDiff = Math.abs(currentDate.getTime() - easterDate.getTime());
+    const daysDiff = Math.ceil(timeDiff / (1000 * 3600 * 24));
+    return daysDiff <= 7; // 1 week before and after Easter
+};
+
+// Get the appropriate list filename based on season
+const getSeasonalListFileName = () => {
+    const season = getCurrentSeason();
+    if (!season || !seasonalLists[season]) {
+        console.log('Using default list:', listFileName);
+        return listFileName;
+    }
+    console.log(`Using seasonal list for ${season}:`, seasonalLists[season]);
+    return seasonalLists[season];
+};
+
 // Get SponsorBlock-Data for the outro/intro segment of the trailer
 const fetchSponsorBlockData = async (videoId) => {
     try {
@@ -679,8 +764,9 @@ const checkBackdropAndLogo = movie => {
     ).catch(() => fetchRandomMovie());
 };
 
-const readCustomList = () =>
-    fetch(listFileName + '?' + new Date().getTime())
+const readCustomList = () => {
+    const currentListFile = getSeasonalListFileName();
+    return fetch(currentListFile + '?' + new Date().getTime())
         .then(response => response.ok ? response.text() : null)
         .then(text => {
             if (!text || !text.trim()) {
@@ -723,6 +809,7 @@ const readCustomList = () =>
             console.error('Error reading List.txt. Falling back to random selection.');
             return null;
         });
+};
 
 
 const fetchRandomMovie = () => {