"use client";

import React, { useState } from "react";
import { useMonitoringSettingsAll } from "@/hooks/useMonitoringSettings";
import type {
  MonitoringTheme,
  ProductionLayout,
  RefreshInterval,
  AllMonitoringSettings,
} from "@/types/monitoringSettings";
import { Button } from "@/components/ui/button";
import { Card, CardContent, CardHeader, CardTitle, CardDescription } from "@/components/ui/card";
import { Switch } from "@/components/ui/switch";
import { Checkbox } from "@/components/ui/checkbox";
import { Label } from "@/components/ui/label";
import { Select, SelectContent, SelectItem, SelectTrigger, SelectValue } from "@/components/ui/select";
import { cn } from "@/lib/utils";
import { Settings2, Save, RotateCcw, Factory, Wrench, ClipboardCheck } from "lucide-react";

// ─── 탭 타입 ─────────────────────────────────────────────────

type MonitorTab = "production" | "equipment" | "quality";

const TABS: { key: MonitorTab; label: string; icon: React.ReactNode; desc: string }[] = [
  { key: "production", label: "생산모니터링", icon: <Factory className="h-6 w-6" />, desc: "작업지시 진행현황" },
  { key: "equipment", label: "설비운영모니터링", icon: <Wrench className="h-6 w-6" />, desc: "설비 가동 현황" },
  { key: "quality", label: "품질점검현황", icon: <ClipboardCheck className="h-6 w-6" />, desc: "검사 현황 모니터링" },
];

// ─── 필드 라벨 매핑 ──────────────────────────────────────────

const PRODUCTION_FIELD_LABELS: Record<string, string> = {
  workInstructionNo: "작업지시번호",
  itemName: "품목명",
  spec: "규격",
  customerName: "거래처",
  worker: "작업자/작업조",
  dueDate: "납기일",
  equipment: "사용설비",
  processProgress: "공정 진행현황",
  progressBar: "진행률 바",
  priority: "우선순위 표시",
  salesOrderNo: "수주번호",
  quantityInfo: "지시수량/완료수량",
};

const EQUIPMENT_FIELD_LABELS: Record<string, string> = {
  equipmentName: "설비명",
  equipmentType: "설비유형",
  equipmentLocation: "설비위치",
  operationStatus: "가동상태",
  utilizationBar: "가동률 바",
  dailyOperationTime: "금일 가동시간",
  dailyProductionQty: "금일 생산수량",
  worker: "작업자",
  currentWorkInstruction: "현재 작업지시",
  sensorData: "센서 데이터 (온도/압력/RPM)",
  cumulativeOperationTime: "누적 가동시간",
  nextInspectionDate: "다음 점검 예정일",
};

const QUALITY_COLUMN_LABELS: Record<string, string> = {
  inspectionNo: "검사번호",
  inspectionType: "검사유형",
  itemName: "품목명",
  spec: "규격",
  inspectionQty: "검사수량",
  passFailQty: "합격/불합격 수량",
  defectRate: "불량률",
  resultBar: "검사결과 바",
  judgment: "판정",
  inspector: "검사자",
  inspectedAt: "검사일시",
  inspectionCriteria: "검사기준",
};

const QUALITY_INSPECTION_LABELS: Record<string, string> = {
  incoming: "입고검사",
  process: "공정검사",
  shipping: "출하검사",
};

// ─── 메인 컴포넌트 ───────────────────────────────────────────

export default function MonitoringSettingsPage() {
  const { settings, setSettings, saveAll, resetAll, isLoaded } = useMonitoringSettingsAll();
  const [activeTab, setActiveTab] = useState<MonitorTab>("production");
  const [saved, setSaved] = useState(false);

  const handleSave = () => {
    saveAll();
    setSaved(true);
    setTimeout(() => setSaved(false), 2000);
  };

  const handleReset = () => {
    if (!window.confirm("설정을 초기화하시겠습니까?")) return;
    resetAll();
  };

  if (!isLoaded) {
    return <div className="text-muted-foreground flex h-64 items-center justify-center">설정을 불러오는 중...</div>;
  }

  return (
    <div className="bg-background flex h-full min-h-0 flex-col overflow-auto">
      <div className="mx-auto w-full max-w-[1200px] space-y-6 p-6">
        {/* 헤더 */}
        <div>
          <h1 className="text-foreground flex items-center gap-2 text-xl font-bold">
            <Settings2 className="h-5 w-5" />
            모니터링 설정
          </h1>
          <p className="text-muted-foreground mt-1 text-sm">
            각 모니터링 화면의 디자인, 레이아웃, 표시 항목을 설정할 수 있습니다.
          </p>
        </div>

        {/* 모니터링 선택 탭 */}
        <div className="grid grid-cols-3 gap-3">
          {TABS.map((tab) => (
            <button
              key={tab.key}
              onClick={() => setActiveTab(tab.key)}
              className={cn(
                "flex flex-col items-center gap-2 rounded-lg border-2 p-4 text-center transition-all",
                activeTab === tab.key ? "border-primary bg-primary/5" : "border-border hover:border-primary/50",
              )}
            >
              <div className="text-primary">{tab.icon}</div>
              <div className="text-foreground text-sm font-bold">{tab.label}</div>
              <div className="text-muted-foreground text-xs">{tab.desc}</div>
            </button>
          ))}
        </div>

        {/* 설정 내용 */}
        {activeTab === "production" && <ProductionSettings settings={settings} setSettings={setSettings} />}
        {activeTab === "equipment" && <EquipmentSettings settings={settings} setSettings={setSettings} />}
        {activeTab === "quality" && <QualitySettings settings={settings} setSettings={setSettings} />}

        {/* 하단 저장 바 */}
        <div className="bg-card border-border sticky bottom-0 flex justify-end gap-3 border-t py-4">
          <Button variant="outline" onClick={handleReset}>
            <RotateCcw className="mr-1.5 h-4 w-4" />
            초기화
          </Button>
          <Button onClick={handleSave}>
            <Save className="mr-1.5 h-4 w-4" />
            {saved ? "저장 완료!" : "설정 저장"}
          </Button>
        </div>
      </div>
    </div>
  );
}

// ─── 테마 선택기 ─────────────────────────────────────────────

function ThemeSelector({ value, onChange }: { value: MonitoringTheme; onChange: (theme: MonitoringTheme) => void }) {
  const themes: { key: MonitoringTheme; label: string; preview: string; bg: string }[] = [
    { key: "dark", label: "다크 모드", preview: "bg-gray-900", bg: "bg-gray-900" },
    { key: "blue", label: "딥 블루", preview: "bg-slate-800", bg: "bg-slate-800" },
    { key: "light", label: "라이트 모드", preview: "bg-gray-100 border border-gray-200", bg: "bg-gray-100" },
  ];

  return (
    <div className="grid grid-cols-3 gap-3">
      {themes.map((t) => (
        <button
          key={t.key}
          onClick={() => onChange(t.key)}
          className={cn(
            "rounded-lg border-2 p-4 text-center transition-all",
            value === t.key
              ? "border-primary ring-primary/15 shadow-sm ring-2"
              : "border-border hover:border-primary/50",
          )}
        >
          <div className={cn("mb-2 flex h-16 items-center justify-center rounded-md text-xl", t.preview)}>
            {t.key === "dark" ? "🌙" : t.key === "blue" ? "🌊" : "☀️"}
          </div>
          <div className="text-foreground text-xs font-bold">{t.label}</div>
        </button>
      ))}
    </div>
  );
}

// ─── 레이아웃 선택기 (생산만) ────────────────────────────────

function LayoutSelector({
  value,
  onChange,
}: {
  value: ProductionLayout;
  onChange: (layout: ProductionLayout) => void;
}) {
  const layouts: { key: ProductionLayout; label: string }[] = [
    { key: "grid", label: "그리드형" },
    { key: "list", label: "리스트형" },
    { key: "split", label: "분할형" },
  ];

  return (
    <div className="grid grid-cols-3 gap-3">
      {layouts.map((l) => (
        <button
          key={l.key}
          onClick={() => onChange(l.key)}
          className={cn(
            "rounded-lg border-2 p-3 text-center transition-all",
            value === l.key
              ? "border-primary ring-primary/15 shadow-sm ring-2"
              : "border-border hover:border-primary/50",
          )}
        >
          <div className="bg-muted mb-2 flex h-12 gap-1 rounded-md p-1.5">
            {l.key === "grid" && (
              <>
                <div className="bg-primary/20 flex-1 rounded" />
                <div className="bg-primary/20 flex-1 rounded" />
                <div className="bg-primary/20 flex-1 rounded" />
              </>
            )}
            {l.key === "list" && (
              <div className="flex w-full flex-col gap-1">
                <div className="bg-primary/20 h-3 rounded" />
                <div className="bg-primary/20 h-3 rounded" />
                <div className="bg-primary/20 h-3 rounded" />
              </div>
            )}
            {l.key === "split" && (
              <>
                <div className="bg-primary/20 w-[40%] rounded" />
                <div className="bg-primary/20 flex-1 rounded" />
              </>
            )}
          </div>
          <div className="text-foreground text-xs font-semibold">{l.label}</div>
        </button>
      ))}
    </div>
  );
}

// ─── 갱신 설정 섹션 ──────────────────────────────────────────

function RefreshSettings({
  refreshInterval,
  autoRefresh,
  soundOrAlarm,
  soundOrAlarmLabel,
  onIntervalChange,
  onAutoRefreshChange,
  onSoundOrAlarmChange,
}: {
  refreshInterval: RefreshInterval;
  autoRefresh: boolean;
  soundOrAlarm: boolean;
  soundOrAlarmLabel: string;
  onIntervalChange: (v: RefreshInterval) => void;
  onAutoRefreshChange: (v: boolean) => void;
  onSoundOrAlarmChange: (v: boolean) => void;
}) {
  return (
    <div className="grid grid-cols-3 gap-4">
      <div className="space-y-2">
        <Label>자동 갱신 주기</Label>
        <Select value={String(refreshInterval)} onValueChange={(v) => onIntervalChange(Number(v) as RefreshInterval)}>
          <SelectTrigger>
            <SelectValue />
          </SelectTrigger>
          <SelectContent>
            <SelectItem value="10">10초</SelectItem>
            <SelectItem value="30">30초</SelectItem>
            <SelectItem value="60">1분</SelectItem>
            <SelectItem value="300">5분</SelectItem>
          </SelectContent>
        </Select>
      </div>
      <div className="space-y-2">
        <Label>자동 갱신</Label>
        <div className="flex items-center gap-2 pt-1">
          <Switch checked={autoRefresh} onCheckedChange={onAutoRefreshChange} />
          <span className="text-muted-foreground text-sm">{autoRefresh ? "사용" : "사용안함"}</span>
        </div>
      </div>
      <div className="space-y-2">
        <Label>{soundOrAlarmLabel}</Label>
        <div className="flex items-center gap-2 pt-1">
          <Switch checked={soundOrAlarm} onCheckedChange={onSoundOrAlarmChange} />
          <span className="text-muted-foreground text-sm">{soundOrAlarm ? "사용" : "사용안함"}</span>
        </div>
      </div>
    </div>
  );
}

// ─── 체크박스 그리드 ─────────────────────────────────────────

function FieldCheckboxGrid({
  fields,
  labels,
  onChange,
}: {
  fields: Record<string, boolean>;
  labels: Record<string, string>;
  onChange: (key: string, checked: boolean) => void;
}) {
  const allChecked = Object.values(fields).every(Boolean);
  const noneChecked = Object.values(fields).every((v) => !v);

  return (
    <div className="space-y-3">
      <div className="flex gap-2">
        <Button
          variant="outline"
          size="sm"
          onClick={() => Object.keys(fields).forEach((k) => onChange(k, true))}
          disabled={allChecked}
        >
          전체선택
        </Button>
        <Button
          variant="outline"
          size="sm"
          onClick={() => Object.keys(fields).forEach((k) => onChange(k, false))}
          disabled={noneChecked}
        >
          전체해제
        </Button>
      </div>
      <div className="grid grid-cols-2 gap-2 sm:grid-cols-3 lg:grid-cols-4">
        {Object.entries(fields).map(([key, checked]) => (
          <label
            key={key}
            className={cn(
              "flex cursor-pointer items-center gap-2 rounded-md border px-3 py-2.5 transition-all select-none",
              checked ? "bg-primary/5 border-primary/30" : "bg-background border-border hover:border-primary/30",
            )}
          >
            <Checkbox checked={checked} onCheckedChange={(v) => onChange(key, v === true)} />
            <span className="text-foreground text-sm font-medium">{labels[key] || key}</span>
          </label>
        ))}
      </div>
    </div>
  );
}

// ─── 생산모니터링 설정 ───────────────────────────────────────

function ProductionSettings({
  settings,
  setSettings,
}: {
  settings: AllMonitoringSettings;
  setSettings: React.Dispatch<React.SetStateAction<AllMonitoringSettings>>;
}) {
  const prod = settings.production;

  const update = (partial: Partial<typeof prod>) => {
    setSettings((prev) => ({
      ...prev,
      production: { ...prev.production, ...partial },
    }));
  };

  return (
    <div className="space-y-4">
      <Card>
        <CardHeader>
          <CardTitle className="text-base">테마 설정</CardTitle>
          <CardDescription>모니터링 화면의 배경 테마를 선택합니다</CardDescription>
        </CardHeader>
        <CardContent>
          <ThemeSelector value={prod.theme} onChange={(theme) => update({ theme })} />
        </CardContent>
      </Card>

      <Card>
        <CardHeader>
          <CardTitle className="text-base">레이아웃</CardTitle>
          <CardDescription>카드 배치 방식을 선택합니다</CardDescription>
        </CardHeader>
        <CardContent>
          <LayoutSelector value={prod.layout} onChange={(layout) => update({ layout })} />
        </CardContent>
      </Card>

      <Card>
        <CardHeader>
          <CardTitle className="text-base">갱신 설정</CardTitle>
        </CardHeader>
        <CardContent>
          <RefreshSettings
            refreshInterval={prod.refreshInterval}
            autoRefresh={prod.autoRefresh}
            soundOrAlarm={prod.soundEnabled}
            soundOrAlarmLabel="알림음"
            onIntervalChange={(refreshInterval) => update({ refreshInterval })}
            onAutoRefreshChange={(autoRefresh) => update({ autoRefresh })}
            onSoundOrAlarmChange={(soundEnabled) => update({ soundEnabled })}
          />
        </CardContent>
      </Card>

      <Card>
        <CardHeader>
          <CardTitle className="text-base">표시 항목</CardTitle>
          <CardDescription>작업 카드에 표시할 정보를 선택합니다</CardDescription>
        </CardHeader>
        <CardContent>
          <FieldCheckboxGrid
            fields={prod.displayFields}
            labels={PRODUCTION_FIELD_LABELS}
            onChange={(key, checked) =>
              update({
                displayFields: { ...prod.displayFields, [key]: checked },
              })
            }
          />
        </CardContent>
      </Card>
    </div>
  );
}

// ─── 설비모니터링 설정 ───────────────────────────────────────

function EquipmentSettings({
  settings,
  setSettings,
}: {
  settings: AllMonitoringSettings;
  setSettings: React.Dispatch<React.SetStateAction<AllMonitoringSettings>>;
}) {
  const equip = settings.equipment;

  const update = (partial: Partial<typeof equip>) => {
    setSettings((prev) => ({
      ...prev,
      equipment: { ...prev.equipment, ...partial },
    }));
  };

  return (
    <div className="space-y-4">
      <Card>
        <CardHeader>
          <CardTitle className="text-base">테마 설정</CardTitle>
          <CardDescription>모니터링 화면의 배경 테마를 선택합니다</CardDescription>
        </CardHeader>
        <CardContent>
          <ThemeSelector value={equip.theme} onChange={(theme) => update({ theme })} />
        </CardContent>
      </Card>

      <Card>
        <CardHeader>
          <CardTitle className="text-base">갱신 설정</CardTitle>
        </CardHeader>
        <CardContent>
          <RefreshSettings
            refreshInterval={equip.refreshInterval}
            autoRefresh={equip.autoRefresh}
            soundOrAlarm={equip.alarmEnabled}
            soundOrAlarmLabel="이상 알림"
            onIntervalChange={(refreshInterval) => update({ refreshInterval })}
            onAutoRefreshChange={(autoRefresh) => update({ autoRefresh })}
            onSoundOrAlarmChange={(alarmEnabled) => update({ alarmEnabled })}
          />
        </CardContent>
      </Card>

      <Card>
        <CardHeader>
          <CardTitle className="text-base">표시 항목</CardTitle>
          <CardDescription>설비 카드에 표시할 정보를 선택합니다</CardDescription>
        </CardHeader>
        <CardContent>
          <FieldCheckboxGrid
            fields={equip.displayFields}
            labels={EQUIPMENT_FIELD_LABELS}
            onChange={(key, checked) =>
              update({
                displayFields: { ...equip.displayFields, [key]: checked },
              })
            }
          />
        </CardContent>
      </Card>
    </div>
  );
}

// ─── 품질모니터링 설정 ───────────────────────────────────────

function QualitySettings({
  settings,
  setSettings,
}: {
  settings: AllMonitoringSettings;
  setSettings: React.Dispatch<React.SetStateAction<AllMonitoringSettings>>;
}) {
  const qual = settings.quality;

  const update = (partial: Partial<typeof qual>) => {
    setSettings((prev) => ({
      ...prev,
      quality: { ...prev.quality, ...partial },
    }));
  };

  return (
    <div className="space-y-4">
      <Card>
        <CardHeader>
          <CardTitle className="text-base">테마 설정</CardTitle>
          <CardDescription>모니터링 화면의 배경 테마를 선택합니다</CardDescription>
        </CardHeader>
        <CardContent>
          <ThemeSelector value={qual.theme} onChange={(theme) => update({ theme })} />
        </CardContent>
      </Card>

      <Card>
        <CardHeader>
          <CardTitle className="text-base">갱신 설정</CardTitle>
        </CardHeader>
        <CardContent>
          <RefreshSettings
            refreshInterval={qual.refreshInterval}
            autoRefresh={qual.autoRefresh}
            soundOrAlarm={qual.alarmEnabled}
            soundOrAlarmLabel="불합격 알림"
            onIntervalChange={(refreshInterval) => update({ refreshInterval })}
            onAutoRefreshChange={(autoRefresh) => update({ autoRefresh })}
            onSoundOrAlarmChange={(alarmEnabled) => update({ alarmEnabled })}
          />
        </CardContent>
      </Card>

      <Card>
        <CardHeader>
          <CardTitle className="text-base">검사유형 표시</CardTitle>
          <CardDescription>모니터링에 표시할 검사유형을 선택합니다</CardDescription>
        </CardHeader>
        <CardContent>
          <div className="grid grid-cols-3 gap-2">
            {Object.entries(qual.inspectionTypes).map(([key, checked]) => (
              <label
                key={key}
                className={cn(
                  "flex cursor-pointer items-center gap-2 rounded-md border px-3 py-2.5 transition-all select-none",
                  checked ? "bg-primary/5 border-primary/30" : "bg-background border-border hover:border-primary/30",
                )}
              >
                <Checkbox
                  checked={checked}
                  onCheckedChange={(v) =>
                    update({
                      inspectionTypes: { ...qual.inspectionTypes, [key]: v === true },
                    })
                  }
                />
                <span className="text-foreground text-sm font-medium">{QUALITY_INSPECTION_LABELS[key] || key}</span>
              </label>
            ))}
          </div>
        </CardContent>
      </Card>

      <Card>
        <CardHeader>
          <CardTitle className="text-base">테이블 컬럼</CardTitle>
          <CardDescription>검사 테이블에 표시할 컬럼을 선택합니다</CardDescription>
        </CardHeader>
        <CardContent>
          <FieldCheckboxGrid
            fields={qual.tableColumns}
            labels={QUALITY_COLUMN_LABELS}
            onChange={(key, checked) =>
              update({
                tableColumns: { ...qual.tableColumns, [key]: checked },
              })
            }
          />
        </CardContent>
      </Card>
    </div>
  );
}