Fix coin tracker data persistence issue

- Updated API URLs from localhost:3000 to localhost:3001 in script.js
- Added CORS headers to server.js to enable cross-origin requests
- Changed server port from 3000 to 3001 to avoid port conflicts
- Updated CSP in index.html to allow connections to localhost:3001
- Coin tracker entries now persist across page refreshes

html/rechner/index.html

@@ -8,7 +8,7 @@
     script-src 'self' 'unsafe-inline' 'unsafe-eval' https://cdn.jsdelivr.net;
     style-src 'self' 'unsafe-inline';
     img-src 'self' data:;
-    connect-src 'self' http://localhost:3000;
+    connect-src 'self' http://localhost:3001;
   ">
   <title>Rechner</title>
   

html/rechner/script.js

@@ -1,4 +1,4 @@
-"use strict";
+  "use strict";
 (() => {
   // Helper functions
   const $ = id => {
@@ -32,7 +32,7 @@
   const updateCoinTrackersToBackend = (trackers) => {
     console.log("Saving trackers to backend:", trackers);
     
-    fetch('/api/coinTrackers', {
+    fetch('http://localhost:3001/api/coinTrackers', {
       method: 'POST',
       headers: {
         'Content-Type': 'application/json',
@@ -1182,7 +1182,7 @@
   const loadCoinTrackers = () => {
     console.log("Loading trackers from backend...");
     
-    fetch('/api/coinTrackers')
+    fetch('http://localhost:3001/api/coinTrackers')
     .then(response => {
       if (!response.ok) {
         throw new Error('Network response was not ok');
@@ -1507,34 +1507,55 @@
     console.log("updateAnalysisTable called");
     console.trace("Call stack for updateAnalysisTable");
     
-    // Get reinvestment rate from the dedicated analysis input - NOT the main calculator
+    // FIXED: Use main calculator inputs first, fallback to analysis settings if needed
+    const mainInitialPrincipal = parseFloat($('initialPrincipal')?.value) || 0;
+    const mainDailyRate = parseFloat($('dailyRate')?.value) || 0;
+    const mainTermDays = parseInt($('termDays')?.value) || 0;
+    const mainReinvestRate = parseFloat($('reinvestRate')?.value) || 0;
+    
+    // Get analysis settings as fallback/override
     const reinvestRateElement = document.getElementById('analysisReinvestRate');
     const analysisDaysElement = document.getElementById('analysisDays');
     
     console.log("Elements found:", !!reinvestRateElement, !!analysisDaysElement);
-    console.log("Elements:", reinvestRateElement, analysisDaysElement);
+    console.log("Main calculator values:", {mainInitialPrincipal, mainDailyRate, mainTermDays, mainReinvestRate});
-    if (reinvestRateElement) {
-      console.log("Reinvest rate value:", reinvestRateElement.value);
-      console.log("Reinvest rate attribute:", reinvestRateElement.getAttribute('value'));
-      console.log("Reinvest rate type:", typeof reinvestRateElement.value);
-    }
-    if (analysisDaysElement) {
-      console.log("Days value:", analysisDaysElement.value);
-      console.log("Days attribute:", analysisDaysElement.getAttribute('value'));
-      console.log("Days type:", typeof analysisDaysElement.value);
-    }
     
-    const reinvestRate = reinvestRateElement ? parseFloat(reinvestRateElement.value) || 0 : 0;
+    // Use main calculator values, but allow analysis settings to override if they have non-zero values
-    const days = analysisDaysElement ? parseInt(analysisDaysElement.value) || 30 : 30;
+    let reinvestRate = mainReinvestRate;
+    let days = mainTermDays;
+    let initialPrincipal = mainInitialPrincipal;
+    let dailyRate = mainDailyRate;
+    
+    // Override with analysis settings ONLY if they have meaningful values different from defaults
+    if (reinvestRateElement && reinvestRateElement.value !== "" && reinvestRateElement.value !== "0") {
+      const analysisReinvestRate = parseFloat(reinvestRateElement.value);
+      if (analysisReinvestRate > 0) {
+        reinvestRate = analysisReinvestRate;
+      }
+    }
+    if (analysisDaysElement && analysisDaysElement.value !== "" && analysisDaysElement.value !== "30") {
+      const analysisDays = parseInt(analysisDaysElement.value);
+      if (analysisDays > 0 && analysisDays !== 30) {
+        days = analysisDays;
+      }
+    }
     
     console.log("Parsed values - Reinvest Rate:", reinvestRate, "Days:", days);
+    console.log("Using values - Initial Principal:", initialPrincipal, "Daily Rate:", dailyRate);
     
+    // If we have main calculator values, use those for initial investment and yield
+    // Otherwise fall back to coin tracker data
+    let totalInvestment = initialPrincipal;
+    let weightedAverageDailyYield = dailyRate;
+    
+    // Only use coin tracker data if main calculator has no values
+    if (totalInvestment === 0 || weightedAverageDailyYield === 0) {
       // Get data from active coin trackers
       const container = $('coinTrackerContainer');
       const trackerDivs = container.getElementsByClassName("coin-tracker");
       
       // Initialize total investment and weighted yield
-    let totalInvestment = 0;
+      totalInvestment = 0;
       let weightedYieldSum = 0;
       
       // Calculate total investment and weighted yield
@@ -1557,7 +1578,8 @@
       });
     
       // Calculate weighted average daily yield
-    const weightedAverageDailyYield = totalInvestment > 0 ? (weightedYieldSum / totalInvestment) : 0;
+      weightedAverageDailyYield = totalInvestment > 0 ? (weightedYieldSum / totalInvestment) : 0;
+    }
     
     console.log("Analysis values - Reinvest Rate:", reinvestRate, "Days:", days);
     console.log("Total Investment:", totalInvestment, "Weighted Yield:", weightedAverageDailyYield);
@@ -1617,7 +1639,7 @@
     document.getElementById('createBackupBtn').textContent = 'Creating backup...';
     
     // Make request to API
-    fetch(`/api/backup/create${backupName ? `?name=${encodeURIComponent(backupName)}` : ''}`)
+    fetch(`http://localhost:3001/api/backup/create${backupName ? `?name=${encodeURIComponent(backupName)}` : ''}`)
       .then(response => {
         if (!response.ok) {
           throw new Error(`Network error: ${response.status}`);
@@ -1648,7 +1670,7 @@
 
   // Function to load the list of available backups
   const loadBackupList = () => {
-    fetch('/api/backup/list')
+    fetch('http://localhost:3001/api/backup/list')
       .then(response => {
         if (!response.ok) {
           throw new Error('Network response was not ok');
@@ -1773,7 +1795,7 @@
       return;
     }
     
-    fetch(`/api/backup/restore/${filename}`)
+    fetch(`http://localhost:3001/api/backup/restore/${filename}`)
       .then(response => {
         if (!response.ok) {
           throw new Error('Network response was not ok');

html/rechner/server.js

@@ -5,12 +5,20 @@ const fs = require('fs');
 const path = require('path');
 const cron = require('node-cron');
 const app = express();
-const port = 3000;
+const port = 3001;
 
 // Serve static files from the current directory
 app.use(express.static(__dirname));
 app.use(bodyParser.json());
 
+// Add CORS middleware
+app.use((req, res, next) => {
+  res.header('Access-Control-Allow-Origin', '*');
+  res.header('Access-Control-Allow-Methods', 'GET, POST, PUT, DELETE, OPTIONS');
+  res.header('Access-Control-Allow-Headers', 'Origin, X-Requested-With, Content-Type, Accept');
+  next();
+});
+
 // Create backups directory if it doesn't exist
 const backupDir = path.join(__dirname, 'backups');
 if (!fs.existsSync(backupDir)) {