"use client";

import { useRef, useEffect } from "react";
import { Spin, Skeleton } from "antd";
import ReactECharts from "echarts-for-react";
import type { ECharts } from "echarts";
import { MetricToggle } from "@/components/ui/metric-toggle";
import { useTranslation } from "react-i18next";
import { BarChartOutlined } from "@ant-design/icons";
import { Card as ShadcnCard } from "@/components/ui/card";
import { motion } from "framer-motion";

interface UserUsage {
  nickname: string;
  total_cost: number;
  total_count: number;
}

interface UserRankingChartProps {
  loading: boolean;
  users: UserUsage[];
  metric: "cost" | "count";
  onMetricChange: (metric: "cost" | "count") => void;
}

const getBarOption = (
  users: UserUsage[],
  metric: "cost" | "count",
  t: (key: string) => string
) => {
  const columnData = users
    .map((item) => ({
      nickname: item.nickname,
      value: metric === "cost" ? Number(item.total_cost) : item.total_count,
    }))
    .sort((a, b) => b.value - a.value);

  const isSmallScreen = window.innerWidth < 640;

  return {
    tooltip: {
      show: false,
    },
    grid: {
      top: isSmallScreen ? "8%" : "4%",
      bottom: isSmallScreen ? "2%" : "1%",
      left: "4%",
      right: "4%",
      containLabel: true,
    },
    xAxis: {
      type: "category",
      data: columnData.map((item) =>
        item.nickname.length > 12
          ? item.nickname.slice(0, 10) + "..."
          : item.nickname
      ),
      axisLabel: {
        inside: false,
        color: "#555",
        fontSize: 12,
        rotate: 35,
        interval: 0,
        hideOverlap: true,
        padding: [0, 0, 0, 0],
        verticalAlign: "middle",
        align: "right",
        margin: 8,
      },
      axisTick: {
        show: false,
      },
      axisLine: {
        show: true,
        lineStyle: {
          color: "#eee",
          width: 2,
        },
      },
      z: 10,
    },
    yAxis: {
      type: "value",
      name: "",
      nameTextStyle: {
        color: "#666",
        fontSize: 13,
        padding: [0, 0, 0, 0],
      },
      axisLine: {
        show: true,
        lineStyle: {
          color: "#eee",
          width: 2,
        },
      },
      axisTick: {
        show: true,
        lineStyle: {
          color: "#eee",
        },
      },
      splitLine: {
        show: true,
        lineStyle: {
          color: "#f5f5f5",
          width: 2,
        },
      },
      axisLabel: {
        color: "#666",
        fontSize: 12,
        formatter: (value: number) => {
          if (metric === "cost") {
            return `¥${value.toFixed(1)}`;
          }
          return `${value}次`;
        },
      },
    },
    dataZoom: [
      {
        type: "inside",
        start: 0,
        end: Math.min(100, Math.max(100 * (15 / columnData.length), 40)),
        zoomLock: true,
        moveOnMouseMove: true,
      },
    ],
    series: [
      {
        type: "bar",
        itemStyle: {
          color: {
            type: "linear",
            x: 0,
            y: 0,
            x2: 0,
            y2: 1,
            colorStops: [
              {
                offset: 0,
                color: "rgba(99, 133, 255, 0.85)",
              },
              {
                offset: 1,
                color: "rgba(99, 133, 255, 0.4)",
              },
            ],
          },
          borderRadius: [8, 8, 0, 0],
        },
        emphasis: {
          itemStyle: {
            color: {
              type: "linear",
              x: 0,
              y: 0,
              x2: 0,
              y2: 1,
              colorStops: [
                {
                  offset: 0,
                  color: "rgba(99, 133, 255, 0.95)",
                },
                {
                  offset: 1,
                  color: "rgba(99, 133, 255, 0.5)",
                },
              ],
            },
            shadowBlur: 10,
            shadowColor: "rgba(99, 133, 255, 0.2)",
          },
        },
        barWidth: "35%",
        data: columnData.map((item) => item.value),
        showBackground: true,
        backgroundStyle: {
          color: "rgba(180, 180, 180, 0.08)",
          borderRadius: [8, 8, 0, 0],
        },
        label: {
          show: !isSmallScreen,
          position: "top",
          formatter: (params: any) => {
            return metric === "cost"
              ? `${params.value.toFixed(2)}`
              : `${params.value}`;
          },
          fontSize: 11,
          color: "#666",
          distance: 2,
          fontFamily: "monospace",
        },
      },
    ],
    animation: true,
    animationDuration: 800,
    animationEasing: "cubicOut" as const,
  };
};

export default function UserRankingChart({
  loading,
  users,
  metric,
  onMetricChange,
}: UserRankingChartProps) {
  const { t } = useTranslation("common");
  const chartRef = useRef<ECharts>();

  useEffect(() => {
    const handleResize = () => {
      if (chartRef.current) {
        chartRef.current.resize();
        chartRef.current.setOption(getBarOption(users, metric, t));
      }
    };

    window.addEventListener("resize", handleResize);
    return () => window.removeEventListener("resize", handleResize);
  }, [metric, users, t]);

  const onChartReady = (instance: ECharts) => {
    chartRef.current = instance;
    const zoomSize = 6;
    let isZoomed = false;

    instance.on("click", (params) => {
      const dataLength = users.length;

      if (!isZoomed) {
        instance.dispatchAction({
          type: "dataZoom",
          startValue:
            users[Math.max(params.dataIndex - zoomSize / 2, 0)].nickname,
          endValue:
            users[Math.min(params.dataIndex + zoomSize / 2, dataLength - 1)]
              .nickname,
        });
        isZoomed = true;
      } else {
        instance.dispatchAction({
          type: "dataZoom",
          start: 0,
          end: 100,
        });
        isZoomed = false;
      }
    });
  };

  return (
    <motion.div
      initial={{ opacity: 0, y: 20 }}
      animate={{ opacity: 1, y: 0 }}
      transition={{ delay: 0.3 }}
      className="col-span-full bg-gradient-to-br from-card to-card/95 text-card-foreground rounded-xl border shadow-sm overflow-hidden"
    >
      <div className="relative">
        <div className="absolute inset-0 bg-gradient-to-r from-primary/5 via-transparent to-primary/5 pointer-events-none" />

        <div className="relative p-6 space-y-6">
          <div className="flex flex-col sm:flex-row sm:items-center gap-3">
            <div className="flex items-center gap-3 flex-1">
              <div className="w-12 h-12 bg-gradient-to-br from-primary/10 to-primary/5 flex items-center justify-center rounded-xl shrink-0">
                <BarChartOutlined className="text-xl text-primary" />
              </div>
              <div className="space-y-1">
                <h3 className="text-2xl font-semibold bg-gradient-to-br from-foreground to-foreground/80 bg-clip-text text-transparent">
                  {t("panel.userUsageChart.title")}
                </h3>
              </div>
            </div>
            <div className="sm:ml-auto">
              <MetricToggle value={metric} onChange={onMetricChange} />
            </div>
          </div>

          {loading ? (
            <div className="h-[350px] sm:h-[450px] flex items-center justify-center">
              <Skeleton className="w-full h-full rounded-lg" />
            </div>
          ) : (
            <div className="h-[350px] sm:h-[450px] transition-all duration-300">
              <ReactECharts
                option={getBarOption(users, metric, t)}
                style={{ height: "100%", width: "100%" }}
                onChartReady={onChartReady}
                className="bar-chart"
              />
            </div>
          )}
        </div>
      </div>
    </motion.div>
  );
}