"use client";

/**
 * DividerProperties.tsx — 구분선 컴포넌트 설정
 *
 * - section="data": 구분선은 데이터 바인딩 없으므로 null 반환
 * - section="style": StyleAccordion 패턴 (방향 & 선 스타일 + 색상)
 */

import { useState, useCallback } from "react";
import { Input } from "@/components/ui/input";
import { Label } from "@/components/ui/label";
import {
  Select,
  SelectContent,
  SelectItem,
  SelectTrigger,
  SelectValue,
} from "@/components/ui/select";
import { ChevronRight } from "lucide-react";
import { useReportDesigner } from "@/contexts/ReportDesignerContext";
import type { ComponentConfig } from "@/types/report";

interface Props {
  component: ComponentConfig;
  /** 우측 패널: "style" | 모달: "data" | 미전달: 전체 표시 (하위 호환) */
  section?: "style" | "data";
}

function StyleAccordion({
  label,
  isOpen,
  onToggle,
  children,
}: {
  label: string;
  isOpen: boolean;
  onToggle: () => void;
  children: React.ReactNode;
}) {
  return (
    <div className="border-b border-gray-100">
      <button
        onClick={onToggle}
        className={`flex h-10 w-full items-center justify-between px-3 transition-colors ${
          isOpen
            ? "bg-linear-to-r from-blue-600 to-indigo-600 text-white shadow-sm"
            : "bg-white text-gray-900 hover:bg-gray-50"
        }`}
      >
        <span className="text-xs font-bold">{label}</span>
        <ChevronRight
          className={`h-3.5 w-3.5 transition-transform ${isOpen ? "rotate-90" : "text-gray-400"}`}
        />
      </button>
      {isOpen && (
        <div className="border-t border-blue-100 bg-linear-to-b from-blue-50/30 to-white p-3">
          {children}
        </div>
      )}
    </div>
  );
}

function ColorInput({ value, onChange }: { value: string; onChange: (v: string) => void }) {
  return (
    <div className="flex items-center gap-2 rounded-lg border border-gray-200 bg-white px-2 py-1.5">
      <input
        type="color"
        value={value}
        onChange={(e) => onChange(e.target.value)}
        className="h-7 w-7 shrink-0 cursor-pointer rounded border-0 p-0"
      />
      <Input
        value={value}
        onChange={(e) => onChange(e.target.value)}
        className="h-7 border-0 bg-transparent px-1 font-mono text-xs shadow-none focus-visible:ring-0"
      />
    </div>
  );
}

export function DividerProperties({ component, section }: Props) {
  const { updateComponent } = useReportDesigner();

  const showStyle = !section || section === "style";

  if (section === "data") return null;

  const [openSections, setOpenSections] = useState<Set<string>>(new Set(["line"]));
  const toggleSection = (id: string) => {
    setOpenSections((prev) => {
      const next = new Set(prev);
      if (next.has(id)) next.delete(id);
      else next.add(id);
      return next;
    });
  };

  const update = useCallback(
    (updates: Partial<ComponentConfig>) => updateComponent(component.id, updates),
    [component.id, updateComponent],
  );

  return (
    <>
      {showStyle && (
        <div className="mt-2 overflow-hidden rounded-lg border border-gray-200">
          {/* 방향 & 선 스타일 */}
          <StyleAccordion label="방향 & 선 스타일" isOpen={openSections.has("line")} onToggle={() => toggleSection("line")}>
            <div className="space-y-3">
              <div className="grid grid-cols-2 gap-2">
                <div>
                  <Label className="mb-1.5 block text-xs text-gray-500">방향</Label>
                  <Select
                    value={component.orientation || "horizontal"}
                    onValueChange={(value) => {
                      const isToVertical = value === "vertical";
                      const currentWidth = component.width;
                      const currentHeight = component.height;
                      update({
                        orientation: value as "horizontal" | "vertical",
                        width: isToVertical ? 10 : currentWidth > 50 ? currentWidth : 300,
                        height: isToVertical ? (currentWidth > 50 ? currentWidth : 300) : 10,
                      });
                    }}
                  >
                    <SelectTrigger className="h-9 text-xs">
                      <SelectValue />
                    </SelectTrigger>
                    <SelectContent>
                      <SelectItem value="horizontal">가로</SelectItem>
                      <SelectItem value="vertical">세로</SelectItem>
                    </SelectContent>
                  </Select>
                </div>
                <div>
                  <Label className="mb-1.5 block text-xs text-gray-500">선 스타일</Label>
                  <Select
                    value={component.lineStyle || "solid"}
                    onValueChange={(value) =>
                      update({ lineStyle: value as "solid" | "dashed" | "dotted" | "double" })
                    }
                  >
                    <SelectTrigger className="h-9 text-xs">
                      <SelectValue />
                    </SelectTrigger>
                    <SelectContent>
                      <SelectItem value="solid">실선</SelectItem>
                      <SelectItem value="dashed">파선</SelectItem>
                      <SelectItem value="dotted">점선</SelectItem>
                      <SelectItem value="double">이중선</SelectItem>
                    </SelectContent>
                  </Select>
                </div>
              </div>
              <div>
                <Label className="mb-1.5 block text-xs text-gray-500">선 두께</Label>
                <Input
                  type="number"
                  min={0.5}
                  max={20}
                  step={0.5}
                  value={component.lineWidth ?? 1}
                  onChange={(e) => {
                    const val = parseFloat(e.target.value);
                    if (!isNaN(val) && val >= 0.5) {
                      update({ lineWidth: val });
                    }
                  }}
                  className="h-9 text-xs"
                />
              </div>
            </div>
          </StyleAccordion>

          {/* 색상 */}
          <StyleAccordion label="색상" isOpen={openSections.has("color")} onToggle={() => toggleSection("color")}>
            <div className="space-y-3">
              <div>
                <Label className="mb-1.5 block text-xs text-gray-500">선 색상</Label>
                <ColorInput
                  value={component.lineColor || "#000000"}
                  onChange={(v) => update({ lineColor: v })}
                />
              </div>
            </div>
          </StyleAccordion>
        </div>
      )}
    </>
  );
}