Analytics dashboard

"use client";

import * as React from "react";
import { Button } from "@/components/ui/button";
import { Card } from "@/components/ui/card";
import { Select, SelectItem } from "@/components/ui/select";
import { Checkbox } from "@/components/ui/checkbox";
import { Alert, AlertDescription } from "@/components/ui/alert";
import { RevenueChart } from "@/components/blocks/revenue-chart";
import { ChannelChart } from "@/components/blocks/channel-chart";
import { ConversionChart } from "@/components/blocks/conversion-chart";
import { summarizeAnalytics, AnalyticsDataError, analyticsCsv, type AnalyticsRecord } from "@/lib/analytics-model";
import { analyticsCopy, analyticsFormats, type AnalyticsLocale } from "@/lib/analytics-copy";
import { demoAnalytics } from "./analytics-demo";

export interface AnalyticsDashboardProps {
  records: readonly AnalyticsRecord[];
  locale?: AnalyticsLocale;
  currency?: string;
}

/** Read-only reporting: callers own authenticated loading and business data.
 * Props are live inputs; replacing records recalculates this view immediately.
 */
export function AnalyticsDashboard({ records, locale = "en", currency = "USD" }: AnalyticsDashboardProps) {
  const [days, setDays] = React.useState(14);
  const [channel, setChannel] = React.useState<string | undefined>();
  const t = analyticsCopy[locale];
  const result = React.useMemo(() => {
    try { return { data: summarizeAnalytics(records, days, channel), error: false as const }; }
    catch (error) {
      if (!(error instanceof AnalyticsDataError)) throw error;
      return { data: null, error: true as const };
    }
  }, [records, days, channel]);
  const channels = React.useMemo(() => [...new Set(records.map(record => record.channel))].sort(), [records]);
  if (result.error) return <Alert variant="destructive" data-slot="analytics-error"><AlertDescription>{t.invalid}</AlertDescription></Alert>;
  const data = result.data;
  const f = analyticsFormats(locale, currency);
  const metrics = [
    { key: "revenue", label: t.revenue, value: data.observedDays ? f.money(data.totals.revenueCents) : "—" },
    { key: "visits", label: t.visits, value: data.observedDays ? f.number(data.totals.visits) : "—" },
    { key: "converted", label: t.conversions, value: data.observedDays ? f.number(data.totals.convertedVisits) : "—" },
    { key: "conversion", label: t.conversion, value: f.percent(data.conversion) },
  ];
  function exportCsv() {
    const url = URL.createObjectURL(new Blob([analyticsCsv(data)], { type: "text/csv;charset=utf-8" }));
    const link = document.createElement("a");
    link.href = url;
    link.download = `analytics-${data.start}-${data.end}.csv`;
    document.body.append(link);
    link.click();
    link.remove();
    // The download needs a task to consume the URL before it is released.
    window.setTimeout(() => URL.revokeObjectURL(url), 1000);
  }
  return <section data-slot="analytics-dashboard" className="@container/workspace grid min-w-0 gap-7 text-[var(--foreground)]">
    <header className="flex flex-wrap items-start justify-between gap-4"><div className="grid gap-2"><h2 className="text-2xl font-bold leading-tight tracking-tight sm:text-3xl">{t.title}</h2><p className="text-sm text-[var(--muted-foreground)]">{t.intro}</p></div><Button onClick={exportCsv} disabled={!data.observedDays}>{t.export}</Button></header>
    <div className="flex flex-wrap items-end gap-4 rounded-[var(--neu-radius-surface)] bg-transparent py-4 shadow-none">
      <label className="grid min-w-36 flex-1 gap-2 text-xs font-medium">{t.period}<Select value={days} onChange={event => setDays(Number(event.target.value))}>{[7, 14, 30].map(value => <SelectItem key={value} value={value}>{value} {t.days}</SelectItem>)}</Select></label>
      <label className="grid min-w-44 flex-1 gap-2 text-xs font-medium">{t.channel}<Select value={channel === undefined ? "all" : `channel:${channel}`} onChange={event => setChannel(event.target.value === "all" ? undefined : event.target.value.slice(8))}><SelectItem value="all">{t.all}</SelectItem>{channel !== undefined && !channels.includes(channel) && <SelectItem value={`channel:${channel}`}>{channel}</SelectItem>}{channels.map(value => <SelectItem key={value} value={`channel:${value}`}>{value}</SelectItem>)}</Select></label>
      <Button variant="ghost" onClick={() => { setDays(14); setChannel(undefined); }} disabled={days === 14 && channel === undefined}>{t.reset}</Button>
    </div>
    <p role="status" data-slot="analytics-window" className="text-xs leading-relaxed text-[var(--muted-foreground)]">{data.start && `${data.start} – ${data.end} · `}{t.window}: {data.observedDays} / {days}</p>
    <dl data-slot="workspace-metrics" className="grid min-w-0 grid-cols-2 gap-4 @min-[56rem]/workspace:grid-cols-4">
      {metrics.map(metric => (
        <Card key={metric.key} variant={metric.key === "revenue" ? "accent" : "raised"} className="@container/metric grid grid-rows-[minmax(2.5rem,auto)_auto] min-h-32 min-w-0 content-center justify-items-center gap-2 rounded-[calc(var(--neu-radius-surface)*0.5)] px-3 py-5 text-center @min-[36rem]/workspace:px-5">
          <dt className={`row-start-2 min-h-[3em] max-w-full text-balance text-xs font-medium leading-normal [overflow-wrap:anywhere] ${metric.key === "revenue" ? "text-[var(--primary-foreground)]" : "text-[var(--muted-foreground)]"}`}>{metric.label}</dt>
          <dd data-metric={metric.key} className={`row-start-1 m-0 max-w-full self-end font-extrabold leading-[1.1] tracking-tight tabular-nums [overflow-wrap:anywhere] ${metric.key === "revenue" ? "text-[clamp(1rem,14cqi,2.25rem)]" : "text-[clamp(1.375rem,24cqi,2.25rem)]"}`}>{metric.key === "revenue" && data.observedDays ? f.moneyParts(data.totals.revenueCents).map((part, index) => <span key={index} className={part.type === "currency" ? "text-[0.55em] tracking-normal" : undefined}>{part.value}</span>) : metric.value}</dd>
        </Card>
      ))}
    </dl>
    <RevenueChart data={data} locale={locale} currency={currency} />
    <div className="grid min-w-0 gap-6 xl:grid-cols-2"><ChannelChart data={data} locale={locale} /><ConversionChart data={data} locale={locale} /></div>
    <footer className="grid gap-2 text-xs leading-relaxed text-[var(--muted-foreground)]"><p>{t.missing}</p><p>{t.coverage}</p></footer>
  </section>;
}

export function AnalyticsExample({ locale = "en" }: { locale?: AnalyticsLocale }) {
  const [empty, setEmpty] = React.useState(false);
  const t = analyticsCopy[locale];
  return <div className="grid min-w-0 gap-5">
    <AnalyticsDashboard records={empty ? [] : demoAnalytics} locale={locale} />
    <aside data-demo-controls className="flex min-w-0 flex-wrap items-center justify-between gap-3 border-t border-[var(--border)] pt-4">
      <p className="max-w-prose text-xs leading-relaxed text-[var(--muted-foreground)]">{t.sample}</p>
      <label className="flex items-center gap-2 text-xs"><Checkbox checked={empty} onCheckedChange={value => setEmpty(value === true)} />{t.showEmpty}</label>
    </aside>
  </div>;
}

export { demoAnalytics } from "./analytics-demo";
export type { AnalyticsRecord } from "@/lib/analytics-model";