WIP

BudgetApp/wwwroot/js/chart-interop.js

@@ -90,6 +90,14 @@ window.chartInterop = {
         const storedLabels = this.transactionLabels[canvasId];
         const salaryIndices = salaryDayIndices || [];
 
+        const allVals = datasets.flatMap(ds => ds.data);
+        const yMin = allVals.length ? Math.min(...allVals) : 0;
+        const yMax = allVals.length ? Math.max(...allVals) : 0;
+        const yRange = yMax - yMin;
+        const yPad = yRange > 0 ? yRange * 0.15 : (Math.abs(yMin) * 0.15 || 100);
+        const ySuggestedMin = yMin - yPad;
+        const ySuggestedMax = yMax + yPad;
+
         // Salary payday highlight plugin — subtle green band + 💰 marker
         const salaryPlugin = {
             id: 'salaryDays',
@@ -158,6 +166,8 @@ window.chartInterop = {
                         }
                     },
                     y: {
+                        suggestedMin: ySuggestedMin,
+                        suggestedMax: ySuggestedMax,
                         ticks: {
                             callback: function (value) {
                                 return sym + value.toFixed(0);
@@ -306,3 +316,15 @@ document.addEventListener('focusin', function (e) {
         e.target.select();
     }
 });
+
+window.downloadCsv = function (filename, content) {
+    const blob = new Blob([content], { type: 'text/csv;charset=utf-8;' });
+    const url = URL.createObjectURL(blob);
+    const link = document.createElement('a');
+    link.href = url;
+    link.download = filename;
+    document.body.appendChild(link);
+    link.click();
+    document.body.removeChild(link);
+    URL.revokeObjectURL(url);
+};