import React, { useEffect, useState } from "react";
import {
  Dialog,
  DialogContent,
  DialogHeader,
  DialogTitle,
} from "~/components/ui/dialog";
import {
  BarChart,
  Bar,
  XAxis,
  YAxis,
  CartesianGrid,
  Tooltip,
  ResponsiveContainer,
  LabelList,
  Cell,
} from "recharts";
import apiService from "~/lib/api";
import { Skeleton } from "~/components/ui/skeleton";
import { formatNumber } from "~/lib/utils";
import { ChartContainer } from "../ui/chart";
import { TruncatedText } from "../ui/truncatedText";

interface StrategicAlignmentData {
  strategic_theme: string;
  operational_fee_sum: number;
  percentage?: number;
}

interface StrategicAlignmentPopupProps {
  open: boolean;
  onOpenChange: (open: boolean) => void;
}

// ✅ Chart config for shadcn/ui
const chartConfig = {
  percentage: {
    label: "",
    color: "#3AEA83",
  },
};

  const maxHeight = 150; 
  const barHeights =  () => Math.floor(Math.random() * maxHeight);

const ChartSkeleton = () => (
  
  <div className="flex justify-center h-96 w-full p-4">
    {/* Chart bars */}
    <div className=" w-full flex items-end gap-10">
      {[...Array(9)].map((_, i) => (
        <div key={i} className="flex flex-col items-center gap-1">
          <Skeleton
            className="w-10 bg-gray-700 rounded-md"
            style={{ height: `${barHeights()}px` }}
          />
        </div>
      ))}
    </div>
       {/* Left space for Y-axis label */}
    <div className="flex flex-col justify-between mr-2">
      <Skeleton className="h-6 w-15 bg-gray-700 rounded" />
      <Skeleton className="h-6 w-15 bg-gray-700 rounded" />
      <Skeleton className="h-6 w-15 bg-gray-700 rounded" />
      <Skeleton className="h-6 w-15 bg-gray-700 rounded" />
      <Skeleton className="h-6 w-15 bg-gray-700 rounded" />
    </div>
  </div>
);
export function StrategicAlignmentPopup({
  open,
  onOpenChange,
}: StrategicAlignmentPopupProps) {
  const [data, setData] = useState<StrategicAlignmentData[]>([]);
  const [loading, setLoading] = useState(false);

  useEffect(() => {
    if (open) {
      fetchData();
    }
  }, [open]);

  const fetchData = async () => {
    setLoading(true);
    try {
      const response = await apiService.select({
        ProcessName: "project",
        OutputFields: [
          "strategic_theme",
          "sum(operational_fee) as operational_fee_sum",
        ],
        GroupBy: ["strategic_theme"],
      });

      const responseData =
        typeof response.data === "string"
          ? JSON.parse(response.data)
          : response.data;

      const processedData = responseData
        .map((item: any) => ({
          strategic_theme: item.strategic_theme || "N/A",
          operational_fee_sum: Math.max(0, Number(item.operational_fee_sum)),
        }))
        .filter((item: StrategicAlignmentData) => item.strategic_theme !== "");

      const total = processedData.reduce(
        (acc: number, item: StrategicAlignmentData) =>
          acc + item.operational_fee_sum,
        0
      );

      const dataWithPercentage = processedData.map(
        (item: StrategicAlignmentData) => ({
          ...item,
          percentage:
            total > 0
              ? Math.round((item.operational_fee_sum / total) * 100)
              : 0,
        })
      );
      setData(dataWithPercentage || []);
    } catch (error) {
      console.error("Error fetching strategic alignment data:", error);
    } finally {
      setLoading(false);
    }
  };

  return (
    <Dialog open={open} onOpenChange={onOpenChange}>
      <DialogContent className="w-full max-w-4xl bg-[linear-gradient(to_bottom_left,#464861,50%,#111628)] text-white border-none">
        <DialogHeader className="border-b-3 mb-10 py-2 w-full pb-4  border-b-2 border-gray-500/20">
          <DialogTitle className="ml-auto text-sm text-white ">میزان انطباق راهبردی</DialogTitle>
        </DialogHeader>

        {loading ? (
          <ChartSkeleton />
        ) : (
          <>
            <ResponsiveContainer  width="100%" height={400}>
              <ChartContainer  config={chartConfig} className="aspect-auto h-96 w-full">
                <BarChart
                  data={data}
                  margin={{ left: 12, right: 12 }}
                  barGap={15}
                  barSize={30}
                  accessibilityLayer
                >
                  <CartesianGrid vertical={false} stroke="#475569" />
               <XAxis
                    dataKey="strategic_theme"
                    tickLine={false}
                    axisLine={false}
                    tickMargin={10}
                    interval={0}
                    style={{ fill: "#94a3b8", fontSize: 14 }}
                    tick={(props) => {
                      const { x, y, payload } = props;
                      return (
                        <g transform={`translate(${x},${y})`}>
                          <foreignObject width={80} height={20} x={-45} y={0}>
                          <TruncatedText 
                    maxWords={2}
                            text={payload.value}
                            />
                            </foreignObject>
                        </g>
                      );
                    }}
                  />
                  <YAxis
                    domain={[0, 100]}
                    tickLine={false}
                    axisLine={false}
                    tickMargin={20}
                    tick={{ fill: "#94a3b8", fontSize: 12 }}
                    tickFormatter={(value) =>
                      `${formatNumber(Math.round(value))}`
                    }


                      label={{
    value: "تعداد برنامه ها" , 
    angle: -90,           
    position: "insideLeft", 
    fill: "#94a3b8",
    fontSize: 11,
    offset: 0,
    dy: 0,                
    style: { textAnchor: "middle" }, 
  }}
                  />

                  <Bar   dataKey="percentage" radius={[8, 8, 0, 0]}>
                    {data.map((entry, index) => (
                      <Cell key={`cell-${index}`} fill={chartConfig.percentage.color} />
                    ))}
                    <LabelList
                      dataKey="percentage"
                      position="top"
                            offset={15}

                      style={{
                        fill: "#ffffff",
                        fontSize: "16px",
                        fontWeight: "bold",
                      }}
                      formatter={(v: number) => `${formatNumber(Math.round(v))}`}
                    />
                    
                  </Bar>
                </BarChart>
              </ChartContainer>
            </ResponsiveContainer>
          </>
        )}
      </DialogContent>
    </Dialog>
  );
}