prediction charts

src/lib/models/prediction.js

@@ -0,0 +1,30 @@
+import mongoose from 'mongoose';
+
+const predictionSchema = new mongoose.Schema({
+  date: {
+    type: Date,
+    required: true,
+    index: true
+  },
+  predictedPower: {
+    type: Number,
+    required: true
+  },
+  weatherData: {
+    type: Object,
+    required: true
+  },
+  confidence: {
+    type: Number,
+    required: true
+  },
+  lastUpdated: {
+    type: Date,
+    default: Date.now
+  }
+});
+
+// Create compound index for efficient querying
+predictionSchema.index({ date: 1, lastUpdated: 1 });
+
+export const Prediction = mongoose.models.Prediction || mongoose.model('Prediction', predictionSchema);