import { useState } from "react";
import {
  Box,
  CalendarClock,
  BarChart3,
  Clock3,
  Droplets,
  Eye,
  EyeOff,
  FlaskConical,
  RadioTower,
  Sparkles,
  type LucideIcon
} from "lucide-react";
import { MAP_ICON_CELL_RADIUS_CLASS_NAME } from "@/features/map/core";
import { cn } from "@/shared/ui/cn";
import type {
  WorkbenchAlert,
  WorkbenchAlertDataSource,
  WorkbenchUser
} from "../types";
import type { AnalysisArtifact, ArtifactRequestedView } from "../workspace/workspace-model";
import { AlertMenu, AnalysisViewMenu, UserMenu } from "./workbench-top-bar-menus";
import {
  compactHeaderTextClassName,
  headerControlButtonClassName,
  headerControlIconClassName
} from "./workbench-top-bar-styles";

export type WorkbenchTopBarProps = {
  dataTime: string;
  modelName: string;
  activeAnalysisArtifact: AnalysisArtifact | null;
  alerts: WorkbenchAlert[];
  alertDataSource: WorkbenchAlertDataSource;
  user: WorkbenchUser;
  conditionFeedVisible: boolean;
  timelineVisible: boolean;
  taskTickerAvailable: boolean;
  taskTickerVisible: boolean;
  analysisResultsPanelOpen: boolean;
  peripheralSamplePanelOpen: boolean;
  devPanelEnabled: boolean;
  devPanelOpen: boolean;
  onSelectAlert: (alert: WorkbenchAlert) => void;
  onToggleConditionFeed: () => void;
  onToggleTimeline: () => void;
  onToggleTaskTicker: () => void;
  onToggleAnalysisResultsPanel: () => void;
  onTogglePeripheralSamplePanel: () => void;
  onToggleDevPanel: () => void;
  onAnalyzeAlertsWithAgent: () => void | Promise<void>;
  latestAnalysisAvailable: boolean;
  analysisSplitAvailable: boolean;
  onOpenLatestAnalysis: () => void;
  onSetAnalysisView: (view: ArtifactRequestedView) => void;
  onCloseAnalysisView: () => void;
  onShowDataStatus: () => void;
  onRefreshTiles: () => void;
  onShowShortcuts: () => void;
  onExportConfig: () => void;
  onLogout?: () => Promise<void>;
};

type HeaderMenuId = "alerts" | "analysis-view" | "compact-alerts" | "user";

export function WorkbenchTopBar({
  dataTime,
  modelName,
  activeAnalysisArtifact,
  alerts,
  alertDataSource,
  user,
  conditionFeedVisible,
  timelineVisible,
  taskTickerAvailable,
  taskTickerVisible,
  analysisResultsPanelOpen,
  peripheralSamplePanelOpen,
  devPanelEnabled,
  devPanelOpen,
  onSelectAlert,
  onToggleConditionFeed,
  onToggleTimeline,
  onToggleTaskTicker,
  onToggleAnalysisResultsPanel,
  onTogglePeripheralSamplePanel,
  onToggleDevPanel,
  onAnalyzeAlertsWithAgent,
  latestAnalysisAvailable,
  analysisSplitAvailable,
  onOpenLatestAnalysis,
  onSetAnalysisView,
  onCloseAnalysisView,
  onShowDataStatus,
  onRefreshTiles,
  onShowShortcuts,
  onExportConfig,
  onLogout
}: WorkbenchTopBarProps) {
  const [openMenu, setOpenMenu] = useState<HeaderMenuId | null>(null);
  const createMenuOpenChange = (menuId: HeaderMenuId) => (open: boolean) => {
    setOpenMenu(open ? menuId : null);
  };

  return (
    <header className="acrylic-navigation pointer-events-auto absolute left-0 right-0 top-0 z-30 flex h-14 select-none items-center justify-between gap-2 border-b px-2 sm:gap-3 sm:px-4 md:px-5">
      <div className="flex min-w-0 items-center gap-2 sm:gap-2.5 lg:shrink-0">
        <div
          className={cn(
            "grid h-8 w-8 shrink-0 place-items-center bg-blue-600 text-white shadow-lg shadow-blue-600/20",
            MAP_ICON_CELL_RADIUS_CLASS_NAME
          )}
        >
          <Droplets size={18} aria-hidden="true" />
        </div>
        <div className="min-w-0">
          <h1 aria-label="供水管网智能调度系统" className="truncate text-sm font-semibold leading-5 text-slate-950">
            <span className="sm:hidden">供水</span>
            <span className="hidden sm:inline">供水管网智能调度系统</span>
          </h1>
          <p className="hidden truncate text-xs leading-4 text-slate-500 sm:block">调度工作台</p>
        </div>
      </div>

      <div className="hidden shrink-0 items-center gap-2 text-sm text-slate-700 lg:flex">
        <HeaderReadout icon={Clock3} label="数据时间" value={dataTime} />
        <div className="hidden items-center gap-2 xl:flex">
          <HeaderDivider />
          <HeaderReadout icon={Box} label="模型版本" value={modelName} />
        </div>
        <HeaderDivider />
        <TaskTickerToggle
          available={taskTickerAvailable}
          visible={taskTickerVisible}
          onToggle={onToggleTaskTicker}
        />
        {taskTickerAvailable ? <HeaderDivider /> : null}
        <ConditionFeedToggle visible={conditionFeedVisible} onToggle={onToggleConditionFeed} />
        <HeaderDivider />
        <AlertMenu
          open={openMenu === "alerts"}
          onOpenChange={createMenuOpenChange("alerts")}
          alerts={alerts}
          sourceLabel={getAlertSourceLabel(alertDataSource)}
          conditionFeedVisible={conditionFeedVisible}
          onSelectAlert={onSelectAlert}
          onToggleConditionFeed={onToggleConditionFeed}
          onAnalyzeAlertsWithAgent={onAnalyzeAlertsWithAgent}
        />
        {activeAnalysisArtifact ? (
          <>
            <HeaderDivider />
            <AnalysisViewMenu
              open={openMenu === "analysis-view"}
              onOpenChange={createMenuOpenChange("analysis-view")}
              title={activeAnalysisArtifact.title}
              subtitle={activeAnalysisArtifact.subtitle}
              sourceLabel={getAnalysisOriginLabel(activeAnalysisArtifact.origin)}
              splitAvailable={analysisSplitAvailable}
              hasSpatialView={activeAnalysisArtifact.mapRelation !== "none"}
              onShowResult={() => onSetAnalysisView("focus")}
              onShowMapSplit={() => onSetAnalysisView("map_split")}
              onShowMapOnly={() => onSetAnalysisView("map_only")}
              onClose={onCloseAnalysisView}
            />
          </>
        ) : null}
      </div>

      <div className="flex shrink-0 items-center gap-2">
        <button
          type="button"
          aria-label="项目分析成果"
          aria-pressed={analysisResultsPanelOpen}
          title="项目分析成果"
          onClick={onToggleAnalysisResultsPanel}
          className={cn("group px-2", headerControlButtonClassName)}
        >
          <span className={headerControlIconClassName}>
            <BarChart3 size={14} aria-hidden="true" />
          </span>
          <span className={cn(compactHeaderTextClassName, "hidden xl:inline")}>分析成果</span>
        </button>
        <button
          type="button"
          aria-label="外围样板管理"
          aria-pressed={peripheralSamplePanelOpen}
          title="外围样板管理"
          onClick={onTogglePeripheralSamplePanel}
          className={cn("group px-2", headerControlButtonClassName)}
        >
          <span className={headerControlIconClassName}><RadioTower size={14} aria-hidden="true" /></span>
          <span className={cn(compactHeaderTextClassName, "hidden xl:inline")}>外围样板</span>
        </button>
        <div className="lg:hidden">
          <TimelineToggle compact visible={timelineVisible} onToggle={onToggleTimeline} />
        </div>
        <div className="hidden lg:block">
          <TimelineToggle visible={timelineVisible} onToggle={onToggleTimeline} />
        </div>
        {latestAnalysisAvailable && !activeAnalysisArtifact ? (
          <div className="hidden lg:block">
            <button
              type="button"
              aria-label="打开最新后端分析成果"
              title="打开最新后端分析成果"
              data-selection-tone="soft"
              onClick={onOpenLatestAnalysis}
              className={cn("group px-2", headerControlButtonClassName)}
            >
              <span className={headerControlIconClassName}>
                <Sparkles size={14} aria-hidden="true" />
              </span>
              <span className="hidden text-sm font-semibold xl:inline">最新分析</span>
            </button>
          </div>
        ) : null}
        {devPanelEnabled ? (
          <div className="hidden lg:block">
            <button
              type="button"
              aria-label="切换地图 Dev Panel"
              aria-pressed={devPanelOpen}
              data-selection-tone="soft"
              onClick={onToggleDevPanel}
              className={cn("group px-2", headerControlButtonClassName)}
            >
              <span className={headerControlIconClassName}>
                <FlaskConical size={14} aria-hidden="true" />
              </span>
              <span className={compactHeaderTextClassName}>Dev</span>
            </button>
          </div>
        ) : null}
        <div className="lg:hidden">
          <AlertMenu
            compact
            open={openMenu === "compact-alerts"}
            onOpenChange={createMenuOpenChange("compact-alerts")}
            alerts={alerts}
            sourceLabel={getAlertSourceLabel(alertDataSource)}
            conditionFeedVisible={conditionFeedVisible}
            onSelectAlert={onSelectAlert}
            onToggleConditionFeed={onToggleConditionFeed}
            onAnalyzeAlertsWithAgent={onAnalyzeAlertsWithAgent}
          />
        </div>
        <UserMenu
          open={openMenu === "user"}
          onOpenChange={createMenuOpenChange("user")}
          user={user}
          onRefreshTiles={onRefreshTiles}
          onShowDataStatus={onShowDataStatus}
          onShowShortcuts={onShowShortcuts}
          onExportConfig={onExportConfig}
          onLogout={onLogout}
        />
      </div>
    </header>
  );
}

function getAlertSourceLabel(source: WorkbenchAlertDataSource) {
  if (source === "backend") return "后端运行态";
  if (source === "mock") return "工况演示回退";
  return "未配置告警源";
}

function getAnalysisOriginLabel(origin: AnalysisArtifact["origin"]) {
  if (origin === "backend") return "后端分析运行";
  if (origin === "demo") return "演示成果";
  return "Agent 分析";
}

function TaskTickerToggle({
  available,
  visible,
  onToggle
}: {
  available: boolean;
  visible: boolean;
  onToggle: () => void;
}) {
  const Icon = visible ? EyeOff : Eye;

  if (!available) {
    return null;
  }

  return (
    <button
      type="button"
      aria-label={visible ? "隐藏任务浮条" : "显示任务浮条"}
      aria-pressed={visible}
      data-selection-tone="soft"
      title={visible ? "隐藏任务浮条" : "显示任务浮条"}
      onClick={onToggle}
      className={cn("group px-2", headerControlButtonClassName)}
    >
      <span className={headerControlIconClassName}>
        <Icon size={14} aria-hidden="true" />
      </span>
      <span className={compactHeaderTextClassName}>任务浮条</span>
    </button>
  );
}

function ConditionFeedToggle({ visible, onToggle }: { visible: boolean; onToggle: () => void }) {
  return (
    <button
      type="button"
      aria-label="工况任务"
      aria-pressed={visible}
      data-selection-tone="soft"
      title="工况任务"
      onClick={onToggle}
      className={cn("group px-2", headerControlButtonClassName)}
    >
      <span className={headerControlIconClassName}>
        <CalendarClock size={14} aria-hidden="true" />
      </span>
      <span className={compactHeaderTextClassName}>工况任务</span>
    </button>
  );
}

function TimelineToggle({
  visible,
  compact = false,
  onToggle
}: {
  visible: boolean;
  compact?: boolean;
  onToggle: () => void;
}) {
  return (
    <button
      type="button"
      aria-label={visible ? "隐藏运行时间轴" : "显示运行时间轴"}
      aria-pressed={visible}
      data-selection-tone="soft"
      title={visible ? "隐藏运行时间轴" : "显示运行时间轴"}
      onClick={onToggle}
      className={cn("group", compact ? "px-1.5" : "px-2", headerControlButtonClassName)}
    >
      <span className={headerControlIconClassName}>
        <Clock3 size={14} aria-hidden="true" />
      </span>
      {!compact ? <span className={compactHeaderTextClassName}>时间轴</span> : null}
    </button>
  );
}

function HeaderReadout({
  icon: Icon,
  label,
  value
}: {
  icon?: LucideIcon;
  label: string;
  value: string;
}) {
  return (
    <div className="flex shrink-0 items-center gap-1.5 whitespace-nowrap">
      {Icon ? <Icon size={14} className="shrink-0 text-blue-700" aria-hidden="true" /> : null}
      <span className="sr-only">{label}</span>
      <span className="max-w-40 shrink-0 truncate text-sm font-semibold text-slate-800">
        {value}
      </span>
    </div>
  );
}

function HeaderDivider() {
  return <div className="h-5 w-px shrink-0 bg-slate-200/80" />;
}