Add predictions and forecasting analytics
Introduces a new PredictionsChart component and integrates it into the AnalyticsDashboard with a new tab for AI-powered sales, demand, and stock forecasting. Expands analytics-service with types and service functions for predictions, enabling comprehensive future insights for revenue, demand, and inventory.
This commit is contained in:
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428
components/analytics/PredictionsChart.tsx
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428
components/analytics/PredictionsChart.tsx
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"use client";
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import { useState, useEffect } from "react";
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import {
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Card,
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CardContent,
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CardDescription,
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CardHeader,
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CardTitle,
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} from "@/components/ui/card";
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import { Badge } from "@/components/ui/badge";
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import { Button } from "@/components/ui/button";
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import {
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Select,
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SelectContent,
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SelectItem,
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SelectTrigger,
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SelectValue,
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} from "@/components/ui/select";
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import {
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TrendingUp,
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TrendingDown,
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Package,
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DollarSign,
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AlertTriangle,
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RefreshCw,
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Calendar,
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BarChart3,
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} from "lucide-react";
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import { useToast } from "@/hooks/use-toast";
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import { Skeleton } from "@/components/ui/skeleton";
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import {
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getPredictionsOverviewWithStore,
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getStockPredictionsWithStore,
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type PredictionsOverview,
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type StockPredictionsResponse,
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} from "@/lib/services/analytics-service";
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import { formatGBP } from "@/utils/format";
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import {
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Table,
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TableBody,
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TableCell,
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TableHead,
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TableHeader,
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TableRow,
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} from "@/components/ui/table";
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import { format } from "date-fns";
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interface PredictionsChartProps {
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timeRange?: number;
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}
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export default function PredictionsChart({
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timeRange = 30,
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}: PredictionsChartProps) {
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const [predictions, setPredictions] = useState<PredictionsOverview | null>(
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null,
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);
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const [stockPredictions, setStockPredictions] =
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useState<StockPredictionsResponse | null>(null);
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const [loading, setLoading] = useState(true);
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const [daysAhead, setDaysAhead] = useState(7);
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const [activeTab, setActiveTab] = useState<"overview" | "stock">("overview");
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const { toast } = useToast();
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const fetchPredictions = async () => {
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try {
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setLoading(true);
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const [overview, stock] = await Promise.all([
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getPredictionsOverviewWithStore(daysAhead, timeRange),
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getStockPredictionsWithStore(timeRange),
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]);
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setPredictions(overview);
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setStockPredictions(stock);
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} catch (error) {
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console.error("Error fetching predictions:", error);
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toast({
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title: "Error",
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description: "Failed to load predictions",
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variant: "destructive",
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});
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} finally {
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setLoading(false);
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}
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};
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useEffect(() => {
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fetchPredictions();
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}, [daysAhead, timeRange]);
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const getConfidenceColor = (confidence: string) => {
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switch (confidence) {
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case "high":
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return "bg-green-500/10 text-green-700 dark:text-green-400";
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case "medium":
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return "bg-yellow-500/10 text-yellow-700 dark:text-yellow-400";
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case "low":
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return "bg-red-500/10 text-red-700 dark:text-red-400";
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default:
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return "bg-gray-500/10 text-gray-700 dark:text-gray-400";
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}
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};
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if (loading) {
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return (
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<Card>
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<CardHeader>
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<Skeleton className="h-6 w-48" />
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<Skeleton className="h-4 w-72" />
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</CardHeader>
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<CardContent>
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<div className="space-y-4">
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<Skeleton className="h-32 w-full" />
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<Skeleton className="h-32 w-full" />
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<Skeleton className="h-32 w-full" />
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</div>
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</CardContent>
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</Card>
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);
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}
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if (!predictions) {
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return (
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<Card>
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<CardHeader>
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<CardTitle>Predictions</CardTitle>
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<CardDescription>
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Forecast future sales, demand, and stock levels
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</CardDescription>
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</CardHeader>
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<CardContent>
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<p className="text-muted-foreground text-center py-8">
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No prediction data available. Need more historical data.
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</p>
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</CardContent>
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</Card>
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);
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}
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return (
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<Card>
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<CardHeader>
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<div className="flex items-center justify-between">
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<div>
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<CardTitle className="flex items-center gap-2">
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<BarChart3 className="h-5 w-5" />
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Predictions & Forecasting
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</CardTitle>
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<CardDescription>
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AI-powered predictions for sales, demand, and inventory
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</CardDescription>
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</div>
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<div className="flex items-center gap-2">
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<Select
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value={daysAhead.toString()}
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onValueChange={(value) => setDaysAhead(parseInt(value))}
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>
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<SelectTrigger className="w-32">
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<SelectValue />
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</SelectTrigger>
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<SelectContent>
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<SelectItem value="7">7 days</SelectItem>
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<SelectItem value="14">14 days</SelectItem>
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<SelectItem value="30">30 days</SelectItem>
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</SelectContent>
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</Select>
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<Button
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variant="outline"
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size="icon"
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onClick={fetchPredictions}
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disabled={loading}
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>
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<RefreshCw
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className={`h-4 w-4 ${loading ? "animate-spin" : ""}`}
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/>
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</Button>
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</div>
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</div>
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</CardHeader>
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<CardContent>
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<div className="flex gap-2 mb-6">
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<Button
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variant={activeTab === "overview" ? "default" : "outline"}
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onClick={() => setActiveTab("overview")}
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size="sm"
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>
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Overview
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</Button>
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<Button
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variant={activeTab === "stock" ? "default" : "outline"}
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onClick={() => setActiveTab("stock")}
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size="sm"
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>
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Stock Predictions
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</Button>
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</div>
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{activeTab === "overview" && (
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<div className="space-y-6">
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{/* Sales Predictions */}
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<div className="grid grid-cols-1 md:grid-cols-2 gap-4">
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<Card>
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<CardHeader className="pb-3">
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<CardTitle className="text-sm font-medium flex items-center gap-2">
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<DollarSign className="h-4 w-4" />
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Revenue Prediction
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</CardTitle>
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</CardHeader>
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<CardContent>
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{predictions.sales.predicted !== null ? (
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<div className="space-y-2">
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<div className="text-2xl font-bold">
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{formatGBP(predictions.sales.predicted)}
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</div>
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<div className="flex items-center gap-2">
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<Badge
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className={getConfidenceColor(
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predictions.sales.confidence,
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)}
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>
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{predictions.sales.confidence} confidence
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</Badge>
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<span className="text-xs text-muted-foreground">
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Next {daysAhead} days
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</span>
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</div>
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{predictions.sales.predictedOrders && (
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<div className="text-sm text-muted-foreground">
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~{Math.round(predictions.sales.predictedOrders)}{" "}
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orders
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</div>
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)}
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{predictions.sales.minPrediction &&
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predictions.sales.maxPrediction && (
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<div className="text-xs text-muted-foreground">
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Range: {formatGBP(predictions.sales.minPrediction)} -{" "}
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{formatGBP(predictions.sales.maxPrediction)}
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</div>
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)}
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</div>
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) : (
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<div className="text-sm text-muted-foreground">
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{predictions.sales.message ||
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"Insufficient data for prediction"}
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</div>
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)}
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</CardContent>
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</Card>
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<Card>
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<CardHeader className="pb-3">
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<CardTitle className="text-sm font-medium flex items-center gap-2">
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<Package className="h-4 w-4" />
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Demand Prediction
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</CardTitle>
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</CardHeader>
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<CardContent>
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{predictions.demand.predictedDaily !== null ? (
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<div className="space-y-2">
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<div className="text-2xl font-bold">
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{predictions.demand.predictedDaily.toFixed(1)} units/day
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</div>
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<div className="flex items-center gap-2">
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<Badge
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className={getConfidenceColor(
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predictions.demand.confidence,
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)}
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>
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{predictions.demand.confidence} confidence
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</Badge>
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</div>
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{predictions.demand.predictedWeekly && (
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<div className="text-sm text-muted-foreground">
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~{predictions.demand.predictedWeekly.toFixed(0)} units/week
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</div>
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)}
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{predictions.demand.predictedMonthly && (
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<div className="text-sm text-muted-foreground">
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~{predictions.demand.predictedMonthly.toFixed(0)} units/month
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</div>
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)}
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</div>
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) : (
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<div className="text-sm text-muted-foreground">
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{predictions.demand.message ||
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"Insufficient data for prediction"}
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</div>
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)}
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</CardContent>
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</Card>
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</div>
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{/* Daily Predictions Chart */}
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{predictions.sales.dailyPredictions &&
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predictions.sales.dailyPredictions.length > 0 && (
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<Card>
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<CardHeader className="pb-3">
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<CardTitle className="text-sm font-medium">
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Daily Revenue Forecast
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</CardTitle>
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</CardHeader>
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<CardContent>
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<div className="space-y-2">
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{predictions.sales.dailyPredictions.map((day) => (
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<div
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key={day.day}
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className="flex items-center justify-between p-2 rounded-lg border"
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>
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<div className="flex items-center gap-3">
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<Calendar className="h-4 w-4 text-muted-foreground" />
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<div>
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<div className="text-sm font-medium">
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Day {day.day}
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</div>
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<div className="text-xs text-muted-foreground">
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{format(new Date(day.date), "MMM d, yyyy")}
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</div>
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</div>
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</div>
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<div className="text-sm font-semibold">
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{formatGBP(day.predicted)}
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</div>
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</div>
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))}
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</div>
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</CardContent>
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</Card>
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)}
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</div>
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)}
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{activeTab === "stock" && (
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<div className="space-y-4">
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{stockPredictions && stockPredictions.predictions.length > 0 ? (
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<>
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<div className="flex items-center justify-between">
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<div>
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<p className="text-sm text-muted-foreground">
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{stockPredictions.totalProducts} products tracked
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</p>
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{stockPredictions.productsNeedingRestock > 0 && (
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<p className="text-sm font-medium text-orange-600 dark:text-orange-400 mt-1">
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{stockPredictions.productsNeedingRestock} products
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need restocking soon
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</p>
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)}
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</div>
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</div>
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<div className="rounded-md border">
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<Table>
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<TableHeader>
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<TableRow>
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<TableHead>Product</TableHead>
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<TableHead>Current Stock</TableHead>
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<TableHead>Days Until Out</TableHead>
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<TableHead>Estimated Date</TableHead>
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<TableHead>Confidence</TableHead>
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<TableHead>Status</TableHead>
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</TableRow>
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</TableHeader>
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<TableBody>
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{stockPredictions.predictions.map((prediction) => (
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<TableRow key={prediction.productId}>
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<TableCell className="font-medium">
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{prediction.productName}
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</TableCell>
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<TableCell>
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{prediction.currentStock} {prediction.unitType}
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</TableCell>
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<TableCell>
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{prediction.prediction.daysUntilOutOfStock !== null
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? `${prediction.prediction.daysUntilOutOfStock} days`
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: "N/A"}
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</TableCell>
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<TableCell>
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{prediction.prediction.estimatedDate
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? format(
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new Date(
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prediction.prediction.estimatedDate,
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),
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"MMM d, yyyy",
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)
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: "N/A"}
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</TableCell>
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<TableCell>
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<Badge
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className={getConfidenceColor(
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prediction.prediction.confidence,
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)}
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>
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{prediction.prediction.confidence}
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</Badge>
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</TableCell>
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<TableCell>
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{prediction.needsRestock ? (
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<Badge
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variant="destructive"
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className="flex items-center gap-1 w-fit"
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>
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<AlertTriangle className="h-3 w-3" />
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Restock Soon
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</Badge>
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) : (
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<Badge variant="outline">OK</Badge>
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)}
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</TableCell>
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</TableRow>
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))}
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</TableBody>
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</Table>
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</div>
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</>
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) : (
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<div className="text-center py-8 text-muted-foreground">
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<Package className="h-12 w-12 mx-auto mb-2 opacity-50" />
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<p>No stock predictions available</p>
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<p className="text-sm mt-1">
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Enable stock tracking on products to get predictions
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</p>
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</div>
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)}
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</div>
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)}
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</CardContent>
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</Card>
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);
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}
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