"use client";

import { Bar, BarChart, Cell, ResponsiveContainer, Tooltip, XAxis, YAxis } from "recharts";
import type { SynopStation } from "@/types/imgw";
import { Card } from "@/components/ui/card";
import { useI18n } from "@/lib/i18n";
import { useWeatherStore } from "@/lib/store";
import { convertWindSpeed, getWindSpeedUnitLabel } from "@/lib/weather-utils";

const INITIAL_CHART_DIMENSION = { width: 1, height: 1 };
const SNAPSHOT_COLORS = [
  "hsl(var(--chart-temperature))",
  "hsl(var(--chart-feels-like))",
  "hsl(var(--chart-rainfall))",
];

export function SnapshotChart({ station }: { station: SynopStation }) {
  const { t } = useI18n();
  const windSpeedUnit = useWeatherStore((state) => state.windSpeedUnit);
  const windDigits = windSpeedUnit === "ms" ? 1 : 0;
  const windSpeed = station.windSpeed === null ? null : Number(convertWindSpeed(station.windSpeed, windSpeedUnit).toFixed(windDigits));
  const windMax = windSpeedUnit === "ms" ? 20 : windSpeedUnit === "kmh" ? 72 : 45;
  const rows = [
    { name: t("weather.humidity"), value: station.humidity, unit: "%", max: 100, color: SNAPSHOT_COLORS[0] },
    { name: t("weather.wind"), value: windSpeed, unit: getWindSpeedUnitLabel(windSpeedUnit), max: windMax, color: SNAPSHOT_COLORS[1] },
    { name: t("weather.rainfall"), value: station.rainfall, unit: "mm", max: 30, color: SNAPSHOT_COLORS[2] },
  ].filter((row) => row.value !== null).map((row) => ({ ...row, normalized: Math.min(100, ((row.value ?? 0) / row.max) * 100) }));

  return (
    <Card className="p-5">
      <p className="section-kicker">{t("snapshot.label")}</p>
      <h2 className="mt-2 text-xl font-semibold tracking-tight">{t("snapshot.title")}</h2>
      <p className="mt-1 text-sm leading-6 text-muted">{t("snapshot.description")}</p>
      <div className="mt-5 h-52 min-w-0">
        <ResponsiveContainer width="100%" height="100%" minWidth={0} minHeight={0} initialDimension={INITIAL_CHART_DIMENSION}>
          <BarChart data={rows} layout="vertical" margin={{ left: 0, right: 16 }}>
            <XAxis type="number" hide domain={[0, 100]} />
            <YAxis type="category" dataKey="name" width={86} axisLine={false} tickLine={false} tick={{ fill: "currentColor", fontSize: 12 }} />
            <Tooltip cursor={{ fill: "hsl(var(--border) / 0.22)" }} formatter={(_, __, item) => [`${item.payload.value} ${item.payload.unit}`, item.payload.name]} />
            <Bar dataKey="normalized" radius={[0, 8, 8, 0]} barSize={14}>
              {rows.map((row) => <Cell fill={row.color} key={row.name} />)}
            </Bar>
          </BarChart>
        </ResponsiveContainer>
      </div>
    </Card>
  );
}