"use client";

import {
  Bot,
  Boxes,
  Brain,
  Check,
  Database,
  MessageSquareText,
  MoreHorizontal,
  Pencil,
  Plus,
  Rocket,
  Search,
  Sparkles,
  Trash2,
  Workflow,
  ChevronLeft,
  ChevronRight,
  Save,
  Mic,
  Send,
  MessageCircle,
  HelpCircle,
  Waypoints,
  AudioLines,
  Square,
} from "lucide-react";

import { Button } from "@/components/ui/button";
import { Badge } from "@/components/ui/badge";
import { Input } from "@/components/ui/input";
import { Textarea } from "@/components/ui/textarea";
import { Switch } from "@/components/ui/switch";
import {
  DropdownMenu,
  DropdownMenuContent,
  DropdownMenuItem,
  DropdownMenuTrigger,
} from "@/components/ui/dropdown-menu";
import {
  Select,
  SelectContent,
  SelectItem,
  SelectTrigger,
  SelectValue,
} from "@/components/ui/select";
import {
  Popover,
  PopoverContent,
  PopoverTrigger,
} from "@/components/ui/popover";
import { VoiceVisualizer } from "@/components/ui/voice-visualizer";
import {
  Card,
  CardContent,
  CardHeader,
  CardTitle,
} from "@/components/ui/card";
import { useEffect, useRef, useState } from "react";

type RuntimeMode = "pipeline" | "realtime";

type AssistantForm = {
  name: string;
  greeting: string;
  prompt: string;
  runtimeMode: RuntimeMode;
  realtimeModel: string;
  model: string;
  asr: string;
  voice: string;
  knowledgeBase: string;
  enableInterrupt: boolean;
};

type AssistantType = "提示词" | "工作流" | "Dify" | "FastGPT";

const assistantTypes: AssistantType[] = ["提示词", "工作流", "Dify", "FastGPT"];

type AssistantTypeOption = {
  type: AssistantType;
  label: string;
  description: string;
  icon: React.ReactNode;
  /** 提示词类型已落地，其余三种暂时显示占位页 */
  available: boolean;
};

const assistantTypeOptions: AssistantTypeOption[] = [
  {
    type: "提示词",
    label: "使用提示词构建",
    description: "通过提示词、模型与语音快速搭建对话助手，适合大多数场景。",
    icon: <MessageSquareText size={20} />,
    available: true,
  },
  {
    type: "工作流",
    label: "使用工作流构建",
    description: "用可视化编排串联多个节点，适合多步骤、带分支的复杂流程。",
    icon: <Workflow size={20} />,
    available: false,
  },
  {
    type: "Dify",
    label: "使用 Dify 构建",
    description: "对接 Dify 应用，复用其编排能力与知识库配置。",
    icon: <Boxes size={20} />,
    available: false,
  },
  {
    type: "FastGPT",
    label: "使用 FastGPT 构建",
    description: "对接 FastGPT 应用，复用其知识库问答与工作流能力。",
    icon: <Database size={20} />,
    available: false,
  },
];

type AssistantListItem = {
  id: string;
  name: string;
  type: AssistantType;
  updatedAt: string;
};

const mockAssistants: AssistantListItem[] = [
  {
    id: "asst_001",
    name: "政务视频咨询助手",
    type: "提示词",
    updatedAt: "2026-06-05 18:20",
  },
  {
    id: "asst_002",
    name: "热线工单辅助助手",
    type: "工作流",
    updatedAt: "2026-06-04 15:12",
  },
  {
    id: "asst_003",
    name: "Dify 知识库问答助手",
    type: "Dify",
    updatedAt: "2026-06-02 09:48",
  },
  {
    id: "asst_004",
    name: "FastGPT 售后咨询助手",
    type: "FastGPT",
    updatedAt: "2026-05-29 11:06",
  },
  {
    id: "asst_005",
    name: "医院挂号问询助手",
    type: "提示词",
    updatedAt: "2026-05-25 14:30",
  },
  {
    id: "asst_006",
    name: "政务办事进度助手",
    type: "工作流",
    updatedAt: "2026-05-22 10:15",
  },
  {
    id: "asst_007",
    name: "Dify 智能客服助手",
    type: "Dify",
    updatedAt: "2026-05-18 09:02",
  },
  {
    id: "asst_008",
    name: "FastGPT 智能催收助手",
    type: "FastGPT",
    updatedAt: "2026-05-15 17:20",
  },
  {
    id: "asst_009",
    name: "高校课程咨询助手",
    type: "提示词",
    updatedAt: "2026-05-10 12:48",
  },
  {
    id: "asst_010",
    name: "企业入驻流程助手",
    type: "工作流",
    updatedAt: "2026-05-06 08:43",
  },
  {
    id: "asst_011",
    name: "Dify 政策助手",
    type: "Dify",
    updatedAt: "2026-05-01 16:45",
  },
  {
    id: "asst_012",
    name: "FastGPT 报修助手",
    type: "FastGPT",
    updatedAt: "2026-04-28 19:34",
  },
];

type DebugMode = "text" | "voice";

type TypeFilter = "全部" | AssistantType;

const typeFilters: TypeFilter[] = ["全部", ...assistantTypes];

export function AssistantPage() {
  const [form, setForm] = useState<AssistantForm>({
    name: "政务视频咨询助手",
    greeting: "您好，我是 AI 视频助手，请问有什么可以帮您？",
    prompt:
      "你是一名专业的政务视频咨询助手，负责为市民提供政策解读、办事指南和常见问题解答。\n\n请遵循以下原则：\n1. 回答准确、简洁，使用通俗易懂的语言\n2. 不确定的信息应明确告知，不编造政策内容\n3. 涉及具体办事流程时，引导用户前往官方渠道核实",
    runtimeMode: "pipeline",
    realtimeModel: "gpt-realtime-2",
    model: "DeepSeek-V3",
    asr: "SenseVoice",
    voice: "晓宁",
    knowledgeBase: "无",
    enableInterrupt: true,
  });
  const [view, setView] = useState<"list" | "choose" | "create" | "placeholder">(
    "list",
  );
  const [searchQuery, setSearchQuery] = useState("");
  const [typeFilter, setTypeFilter] = useState<TypeFilter>("全部");
  const [currentPage, setCurrentPage] = useState(1);
  // 右侧调试 drawer 的当前模式
  const [debugMode, setDebugMode] = useState<DebugMode>("text");
  // choose 步骤的草稿：名称与已选类型，确认后才决定进入哪个构建页
  const [draftName, setDraftName] = useState("");
  const [draftType, setDraftType] = useState<AssistantType | null>(null);

  function startCreate() {
    setDraftName("");
    setDraftType(null);
    setView("choose");
  }

  function confirmType() {
    if (!draftName.trim() || !draftType) {
      return;
    }

    if (draftType === "提示词") {
      // 提示词类型：复用现有创建表单，并把已填的名称带过去
      updateForm("name", draftName.trim());
      setView("create");
    } else {
      // 工作流 / Dify / FastGPT：暂时显示占位页
      setView("placeholder");
    }
  }

  const filteredAssistants = mockAssistants.filter((assistant) => {
    if (typeFilter !== "全部" && assistant.type !== typeFilter) {
      return false;
    }

    const keyword = searchQuery.trim().toLowerCase();

    if (!keyword) {
      return true;
    }

    return [assistant.name, assistant.id, assistant.type, assistant.updatedAt]
      .join(" ")
      .toLowerCase()
      .includes(keyword);
  });

  const pageSize = 5;
  const totalPages = Math.max(1, Math.ceil(filteredAssistants.length / pageSize));
  const safeCurrentPage = Math.min(currentPage, totalPages);
  const pageStart = (safeCurrentPage - 1) * pageSize;
  const pageEnd = pageStart + pageSize;
  const paginatedAssistants = filteredAssistants.slice(pageStart, pageEnd);

  function handleSearchChange(value: string) {
    setSearchQuery(value);
    setCurrentPage(1);
  }

  function handleFilterChange(filter: TypeFilter) {
    setTypeFilter(filter);
    setCurrentPage(1);
  }

  function updateForm<K extends keyof AssistantForm>(
    key: K,
    value: AssistantForm[K],
  ) {
    setForm((prev) => ({
      ...prev,
      [key]: value,
    }));
  }
  if (view === "list") {
    return (
      <div className="mx-auto flex w-full max-w-[1440px] flex-col gap-8">
        <div className="flex flex-col items-start justify-between gap-5 sm:flex-row sm:gap-6">
          <div>
            <h1 className="font-display display-lg text-ink">助手列表</h1>
            <p className="mt-3 max-w-2xl text-[15px] leading-7 text-muted-foreground">
              管理已有的视频助手，支持提示词、工作流、Dify 和 FastGPT 类型。
            </p>
          </div>

          <Button
            size="lg"
            className="w-full shrink-0 gap-2 sm:w-auto"
            onClick={startCreate}
          >
            <Plus size={16} />
            创建助手
          </Button>
        </div>

        <section className="rounded-2xl border border-hairline bg-card p-6 shadow-sm">
          <div className="mb-6 flex flex-col gap-4 lg:flex-row lg:items-center lg:justify-between">
            <div className="flex flex-wrap items-center gap-2">
              {typeFilters.map((filter) => (
                <Button
                  key={filter}
                  variant={filter === typeFilter ? "default" : "outline"}
                  size="sm"
                  className={
                    filter === typeFilter
                      ? "rounded-full"
                      : "rounded-full border-hairline-strong text-muted-foreground hover:text-foreground"
                  }
                  onClick={() => handleFilterChange(filter)}
                >
                  {filter}
                </Button>
              ))}
            </div>

            <div className="relative w-full lg:w-[320px]">
              <Search
                size={15}
                className="pointer-events-none absolute left-3 top-1/2 -translate-y-1/2 text-muted-soft"
              />
              <Input
                value={searchQuery}
                onChange={(event) => handleSearchChange(event.target.value)}
                className="h-10 border-hairline-strong bg-background pl-9 text-sm text-foreground placeholder:text-muted-soft"
                placeholder="搜索助手名称、类型或 ID..."
              />
            </div>
          </div>

          <div className="overflow-hidden rounded-xl border border-hairline">
            <div className="hidden items-center gap-4 bg-surface-strong/60 px-5 py-3 md:flex">
              <div className="caption-label flex-1 text-muted-soft">
                助手名称
              </div>
              <div className="caption-label w-[110px] text-muted-soft">
                助手类型
              </div>
              <div className="caption-label w-[150px] text-muted-soft">
                更新时间
              </div>
              <div className="caption-label w-[116px] text-right text-muted-soft">
                操作
              </div>
            </div>

            <div className="divide-y divide-hairline">
              {paginatedAssistants.map((assistant) => (
                <div
                  key={assistant.id}
                  className="flex flex-col gap-3 px-5 py-4 text-sm transition-colors hover:bg-surface-strong/40 md:flex-row md:items-center md:gap-4"
                >
                  <div className="min-w-0 flex-1">
                    <div className="truncate font-medium text-foreground">
                      {assistant.name}
                    </div>
                    <div className="mt-1 text-xs text-muted-soft">
                      {assistant.id}
                    </div>
                  </div>

                  <div className="md:w-[110px]">
                    <Badge
                      variant="secondary"
                      className="h-6 bg-surface-strong px-3 text-muted-foreground"
                    >
                      {assistant.type}
                    </Badge>
                  </div>

                  <div className="text-muted-foreground md:w-[150px]">
                    {assistant.updatedAt}
                  </div>

                  <div className="flex justify-end gap-2 md:w-[116px]">
                    <Button
                      variant="outline"
                      size="sm"
                      className="gap-1.5 border-hairline-strong text-xs text-muted-foreground hover:text-foreground"
                      onClick={() => setView("create")}
                    >
                      <Pencil size={14} />
                      编辑
                    </Button>

                    <DropdownMenu>
                      <DropdownMenuTrigger asChild>
                        <Button
                          variant="outline"
                          size="icon-sm"
                          className="border-hairline-strong text-muted-foreground hover:text-foreground"
                          aria-label={`${assistant.name} 更多操作`}
                        >
                          <MoreHorizontal size={15} />
                        </Button>
                      </DropdownMenuTrigger>
                      <DropdownMenuContent
                        align="end"
                        className="w-32 min-w-32 rounded-xl border border-hairline bg-popover p-1"
                      >
                        <DropdownMenuItem
                          variant="destructive"
                          className="rounded-lg"
                        >
                          <Trash2 size={14} />
                          删除
                        </DropdownMenuItem>
                      </DropdownMenuContent>
                    </DropdownMenu>
                  </div>
                </div>
              ))}

              {filteredAssistants.length === 0 && (
                <div className="px-5 py-12 text-center">
                  <div className="font-medium text-foreground">
                    未找到匹配的助手
                  </div>
                  <div className="mt-2 text-sm text-muted-foreground">
                    请调整关键词或筛选条件后再试。
                  </div>
                </div>
              )}
            </div>
          </div>

          <div className="mt-5 flex flex-col gap-3 text-sm text-muted-foreground sm:flex-row sm:items-center sm:justify-between">
            <div>
              {filteredAssistants.length === 0
                ? "没有数据"
                : `显示 ${pageStart + 1}-${Math.min(pageEnd, filteredAssistants.length)} / 共 ${filteredAssistants.length} 个助手`}
            </div>

            <div className="flex items-center gap-2">
              <Button
                variant="outline"
                size="icon-sm"
                className="border-hairline-strong text-muted-foreground hover:text-foreground"
                disabled={safeCurrentPage <= 1}
                onClick={() => setCurrentPage((page) => Math.max(1, page - 1))}
                aria-label="上一页"
              >
                <ChevronLeft size={15} />
              </Button>

              {Array.from({ length: totalPages }, (_, index) => index + 1).map(
                (page) => (
                  <Button
                    key={page}
                    variant={page === safeCurrentPage ? "default" : "outline"}
                    size="sm"
                    className={[
                      "h-8 min-w-8 px-2",
                      page === safeCurrentPage
                        ? ""
                        : "border-hairline-strong text-muted-foreground hover:text-foreground",
                    ].join(" ")}
                    onClick={() => setCurrentPage(page)}
                  >
                    {page}
                  </Button>
                ),
              )}

              <Button
                variant="outline"
                size="icon-sm"
                className="border-hairline-strong text-muted-foreground hover:text-foreground"
                disabled={safeCurrentPage >= totalPages}
                onClick={() =>
                  setCurrentPage((page) => Math.min(totalPages, page + 1))
                }
                aria-label="下一页"
              >
                <ChevronRight size={15} />
              </Button>
            </div>
          </div>
        </section>
      </div>
    );
  }

  if (view === "choose") {
    const selectedOption = assistantTypeOptions.find(
      (option) => option.type === draftType,
    );

    return (
      <div className="mx-auto flex w-full max-w-[920px] flex-col gap-8">
        <div className="flex items-start justify-between gap-6">
          <div>
            <h1 className="font-display display-lg text-ink">创建助手</h1>
            <p className="mt-3 max-w-2xl text-[15px] leading-7 text-muted-foreground">
              先为助手取个名字，再选择构建方式。不同方式将进入不同的构建流程。
            </p>
          </div>

          <Button
            variant="outline"
            size="lg"
            className="shrink-0 gap-2 border-hairline-strong text-muted-foreground hover:text-foreground"
            onClick={() => setView("list")}
          >
            <ChevronLeft size={16} />
            返回列表
          </Button>
        </div>

        <section className="rounded-2xl border border-hairline bg-card p-6 shadow-sm">
          <label className="block">
            <div className="mb-2 text-sm font-medium text-foreground">
              助手名称
            </div>
            <Input
              value={draftName}
              autoFocus
              onChange={(event) => setDraftName(event.target.value)}
              placeholder="请输入助手名称"
              className="border-hairline-strong bg-background text-foreground placeholder:text-muted-soft"
            />
          </label>
        </section>

        <section className="flex flex-col gap-4">
          <div className="text-sm font-medium text-foreground">构建方式</div>

          <div className="grid grid-cols-1 gap-4 sm:grid-cols-2">
            {assistantTypeOptions.map((option) => {
              const selected = draftType === option.type;

              return (
                <button
                  key={option.type}
                  type="button"
                  onClick={() => setDraftType(option.type)}
                  className={`group relative flex flex-col gap-4 rounded-2xl border bg-card p-5 text-left transition-colors ${
                    selected
                      ? "border-primary ring-1 ring-primary"
                      : "border-hairline hover:border-hairline-strong"
                  }`}
                >
                  <div className="flex items-center justify-between">
                    <div className="flex h-11 w-11 items-center justify-center rounded-full bg-surface-strong text-foreground">
                      {option.icon}
                    </div>

                    {selected ? (
                      <span className="flex h-6 w-6 items-center justify-center rounded-full bg-primary text-primary-foreground">
                        <Check size={14} />
                      </span>
                    ) : (
                      !option.available && (
                        <Badge
                          variant="secondary"
                          className="h-6 bg-surface-strong px-3 text-xs text-muted-foreground"
                        >
                          即将上线
                        </Badge>
                      )
                    )}
                  </div>

                  <div>
                    <div className="text-base font-medium text-foreground">
                      {option.label}
                    </div>
                    <p className="mt-1.5 text-sm leading-6 text-muted-foreground">
                      {option.description}
                    </p>
                  </div>
                </button>
              );
            })}
          </div>
        </section>

        <div className="flex items-center justify-end gap-3">
          <Button
            variant="outline"
            size="lg"
            className="border-hairline-strong text-muted-foreground hover:text-foreground"
            onClick={() => setView("list")}
          >
            取消
          </Button>
          <Button
            size="lg"
            className="gap-2"
            disabled={!draftName.trim() || !draftType}
            onClick={confirmType}
          >
            <Rocket size={16} />
            {selectedOption && !selectedOption.available
              ? "下一步"
              : "开始构建"}
          </Button>
        </div>
      </div>
    );
  }

  if (view === "placeholder") {
    return (
      <div className="mx-auto flex w-full max-w-[1180px] flex-col gap-6">
        <div className="flex items-start justify-between gap-6">
          <div>
            <h1 className="font-display display-lg text-ink">
              {draftName.trim() || "创建助手"}
            </h1>
            <p className="mt-3 max-w-2xl text-[15px] leading-7 text-muted-foreground">
              {draftType} 构建方式正在开发中，敬请期待。
            </p>
          </div>

          <Button
            variant="outline"
            size="lg"
            className="shrink-0 gap-2 border-hairline-strong text-muted-foreground hover:text-foreground"
            onClick={() => setView("list")}
          >
            <ChevronLeft size={16} />
            返回列表
          </Button>
        </div>

        <section className="relative overflow-hidden rounded-3xl border border-hairline bg-canvas-soft px-10 py-20 text-center">
          <div
            aria-hidden
            className="pointer-events-none absolute -right-24 top-0 h-72 w-72 rounded-full opacity-50 blur-3xl"
            style={{
              backgroundImage:
                "radial-gradient(circle, color-mix(in srgb, var(--gradient-sky) 50%, transparent), transparent 70%)",
            }}
          />
          <div
            aria-hidden
            className="pointer-events-none absolute -left-20 bottom-0 h-64 w-64 rounded-full opacity-45 blur-3xl"
            style={{
              backgroundImage:
                "radial-gradient(circle, color-mix(in srgb, var(--gradient-lavender) 50%, transparent), transparent 70%)",
            }}
          />
          <div className="relative">
            <div className="caption-label inline-flex rounded-full bg-surface-strong px-3 py-1 text-muted-foreground">
              建设中
            </div>
            <p className="font-display display-sm mx-auto mt-5 max-w-md text-ink">
              {draftType} 构建页面正在编写中
            </p>
            <p className="mx-auto mt-3 max-w-md text-sm leading-7 text-body">
              页面骨架与设计语言已就绪，后续将填充具体构建流程与数据。
            </p>
          </div>
        </section>
      </div>
    );
  }

  return (
    <div className="-mt-6 flex h-full flex-col gap-4">
      <div className="flex shrink-0 items-center justify-between gap-6 border-b border-hairline pb-3 pt-1">
        <div className="flex min-w-0 items-center gap-2">
          <EditableTitle
            value={form.name}
            onChange={(value) => updateForm("name", value)}
          />
        </div>

        <div className="flex shrink-0 gap-2">
          <Button
            variant="outline"
            className="gap-2 border-hairline-strong text-muted-foreground hover:text-foreground"
            onClick={() => setView("list")}
          >
            <ChevronLeft size={16} />
            返回
          </Button>

          <Button className="gap-2">
            <Save size={16} />
            保存
          </Button>
        </div>
      </div>

      <div className="flex min-h-0 flex-1 gap-6">
        <div className="min-w-0 flex-1 space-y-5 overflow-y-auto pr-1">
          <SectionCard>
            <div className="grid grid-cols-1 gap-4 md:grid-cols-2">
              <div
                role="button"
                tabIndex={0}
                onClick={() => updateForm("runtimeMode", "pipeline")}
                onKeyDown={(event) => {
                  if (event.key === "Enter" || event.key === " ") {
                    event.preventDefault();
                    updateForm("runtimeMode", "pipeline");
                  }
                }}
                className={[
                  "cursor-pointer rounded-2xl border p-5 text-left transition-colors",
                  form.runtimeMode === "pipeline"
                    ? "border-primary bg-primary/5 ring-1 ring-primary"
                    : "border-hairline bg-canvas-soft hover:border-hairline-strong",
                ].join(" ")}
              >
                <div className="flex items-center justify-between gap-3">
                  <div className="flex items-center gap-3">
                    <div className="flex h-10 w-10 shrink-0 items-center justify-center rounded-full bg-surface-strong text-foreground">
                      <Waypoints size={18} />
                    </div>
                    <div className="flex items-center gap-1.5">
                      <span className="font-medium text-foreground">Pipeline 模式</span>
                      <HelpHint text="通过 ASR、LLM 和 TTS 级联组成语音管线，灵活选配各模块。" />
                    </div>
                  </div>
                  {form.runtimeMode === "pipeline" && (
                    <span className="flex h-6 w-6 shrink-0 items-center justify-center rounded-full bg-primary text-primary-foreground">
                      <Check size={14} />
                    </span>
                  )}
                </div>
              </div>

              <div
                role="button"
                tabIndex={0}
                onClick={() => updateForm("runtimeMode", "realtime")}
                onKeyDown={(event) => {
                  if (event.key === "Enter" || event.key === " ") {
                    event.preventDefault();
                    updateForm("runtimeMode", "realtime");
                  }
                }}
                className={[
                  "cursor-pointer rounded-2xl border p-5 text-left transition-colors",
                  form.runtimeMode === "realtime"
                    ? "border-primary bg-primary/5 ring-1 ring-primary"
                    : "border-hairline bg-canvas-soft hover:border-hairline-strong",
                ].join(" ")}
              >
                <div className="flex items-center justify-between gap-3">
                  <div className="flex items-center gap-3">
                    <div className="flex h-10 w-10 shrink-0 items-center justify-center rounded-full bg-surface-strong text-foreground">
                      <AudioLines size={18} />
                    </div>
                    <div className="flex items-center gap-1.5">
                      <span className="font-medium text-foreground">Realtime 模式</span>
                      <HelpHint text="使用原生实时语音模型，模型直接处理音频输入并生成语音回复。" />
                    </div>
                  </div>
                  {form.runtimeMode === "realtime" && (
                    <span className="flex h-6 w-6 shrink-0 items-center justify-center rounded-full bg-primary text-primary-foreground">
                      <Check size={14} />
                    </span>
                  )}
                </div>
              </div>
            </div>
          </SectionCard>

          <SectionCard
            icon={<MessageSquareText size={18} />}
            title="提示词"
            description="描述助手的角色、能力和回答要求"
          >
            <TextAreaField
              value={form.prompt}
              onChange={(value) => updateForm("prompt", value)}
              placeholder="请输入提示词，描述助手的角色、能力和回答要求"
              rows={8}
            />
          </SectionCard>

          {form.runtimeMode === "pipeline" ? (
            <SectionCard
              icon={<Brain size={18} />}
              title="模型配置"
              description="配置语音管线的大语言模型、语音识别与播报音色"
            >
              <SelectField
                label="大语言模型"
                value={form.model}
                onChange={(value) => updateForm("model", value)}
                options={["DeepSeek-V3", "Qwen-Max", "Kimi-K2", "Doubao-Pro", "GPT-4o"]}
              />
              <SelectField
                label="语音识别"
                value={form.asr}
                onChange={(value) => updateForm("asr", value)}
                options={["SenseVoice", "Paraformer", "Whisper", "FunASR"]}
              />
              <SelectField
                label="播报声音"
                value={form.voice}
                onChange={(value) => updateForm("voice", value)}
                options={["晓宁", "晓美", "晓宇", "晓晨"]}
              />
            </SectionCard>
          ) : (
            <SectionCard
              icon={<Brain size={18} />}
              title="模型配置"
              description="当前模式下 ASR 与 TTS 由 Realtime 模型内置完成"
            >
              <SelectField
                value={form.realtimeModel}
                onChange={(value) => updateForm("realtimeModel", value)}
                options={["gpt-realtime-2", "gpt-realtime", "gpt-4o-realtime-preview"]}
              />
            </SectionCard>
          )}

          <SectionCard
            icon={<Bot size={18} />}
            title="开场白"
            description="助手与用户首次对话时的开场语"
          >
            <TextAreaField
              value={form.greeting}
              onChange={(value) => updateForm("greeting", value)}
              placeholder="请输入助手开场白"
            />
          </SectionCard>

          <SectionCard
            icon={<Database size={18} />}
            title="知识库配置"
            description="选择助手回答时可检索的业务知识来源"
          >
            <SelectField
              value={form.knowledgeBase}
              onChange={(value) => updateForm("knowledgeBase", value)}
              options={["无", "政务政策知识库", "售后知识库", "教育课程知识库", "医疗问答知识库"]}
            />
          </SectionCard>

          <SectionCard
            icon={<Sparkles size={18} />}
            title="交互策略"
            description="设置实时视频对话时的交互体验"
          >
            <ToggleRow
              title="允许用户打断"
              description="用户说话时，助手可以停止当前播报并重新理解用户输入"
              checked={form.enableInterrupt}
              onChange={(checked) => updateForm("enableInterrupt", checked)}
            />
          </SectionCard>
        </div>

        <DebugDrawer mode={debugMode} onModeChange={setDebugMode} />
      </div>
    </div>
  );
}

function DebugDrawer({
  mode,
  onModeChange,
}: {
  mode: DebugMode;
  onModeChange: (mode: DebugMode) => void;
}) {
  const modeTabs: { key: DebugMode; label: string; icon: React.ReactNode }[] = [
    { key: "text", label: "文字测试", icon: <MessageCircle size={15} /> },
    { key: "voice", label: "语音测试", icon: <Mic size={15} /> },
  ];

  return (
    <aside className="hidden min-w-0 flex-1 flex-col overflow-hidden rounded-2xl border border-hairline bg-card shadow-sm lg:flex">
      <div className="shrink-0 border-b border-hairline p-4">
        <div className="mb-3 text-sm font-medium text-foreground">调试与预览</div>
        <div className="flex gap-1 rounded-full bg-surface-strong p-1">
          {modeTabs.map((tab) => (
            <button
              key={tab.key}
              type="button"
              onClick={() => onModeChange(tab.key)}
              className={[
                "flex flex-1 items-center justify-center gap-1.5 rounded-full px-3 py-1.5 text-sm transition-colors",
                mode === tab.key
                  ? "bg-card text-foreground shadow-sm"
                  : "text-muted-foreground hover:text-foreground",
              ].join(" ")}
            >
              {tab.icon}
              {tab.label}
            </button>
          ))}
        </div>
      </div>

      {mode === "text" ? <DebugTextPanel /> : <DebugVoicePanel />}
    </aside>
  );
}

function DebugTextPanel() {
  return (
    <div className="flex min-h-0 flex-1 flex-col">
      <div className="flex min-h-0 flex-1 flex-col gap-4 overflow-y-auto p-4">
        <div className="flex max-w-[85%] flex-col gap-1">
          <div className="rounded-2xl rounded-tl-sm bg-surface-strong px-4 py-2.5 text-sm leading-6 text-foreground">
            您好，我是 AI 视频助手，请问有什么可以帮您？
          </div>
          <span className="px-1 text-xs text-muted-soft">助手</span>
        </div>

        <div className="flex max-w-[85%] flex-col items-end gap-1 self-end">
          <div className="rounded-2xl rounded-tr-sm bg-primary px-4 py-2.5 text-sm leading-6 text-primary-foreground">
            我想咨询一下社保卡的办理流程。
          </div>
          <span className="px-1 text-xs text-muted-soft">我</span>
        </div>

        <div className="flex max-w-[85%] flex-col gap-1">
          <div className="rounded-2xl rounded-tl-sm bg-surface-strong px-4 py-2.5 text-sm leading-6 text-foreground">
            社保卡可通过线上或线下渠道办理。线上可在政务服务 App
            提交申请，线下可前往社保经办网点……
          </div>
          <span className="px-1 text-xs text-muted-soft">助手</span>
        </div>
      </div>

      <div className="shrink-0 border-t border-hairline p-3">
        <div className="flex items-end gap-2">
          <Textarea
            rows={1}
            placeholder="输入测试消息…"
            className="max-h-28 min-h-10 flex-1 resize-none border-hairline-strong bg-background text-sm text-foreground placeholder:text-muted-soft"
          />
          <Button size="icon" className="shrink-0" aria-label="发送">
            <Send size={16} />
          </Button>
        </div>
      </div>
    </div>
  );
}

function DebugVoicePanel() {
  const [recording, setRecording] = useState(false);
  const [micError, setMicError] = useState(false);

  return (
    <div className="flex min-h-0 flex-1 flex-col items-center justify-center gap-6 p-6 text-center">
      <VoiceVisualizer
        active={recording}
        size={200}
        onError={() => {
          setMicError(true);
          setRecording(false);
        }}
      />

      <div>
        <div className="text-sm font-medium text-foreground">
          {recording ? "正在聆听…" : "点击开始语音测试"}
        </div>
        <p className="mt-1.5 text-sm leading-6 text-muted-foreground">
          {micError
            ? "无法访问麦克风，请检查浏览器权限后重试。"
            : "点击下方按钮开始录音，实时识别结果将显示在下方。"}
        </p>
      </div>

      <Button
        onClick={() => {
          setMicError(false);
          setRecording((value) => !value);
        }}
        variant={recording ? "outline" : "default"}
        className={[
          "gap-2",
          recording
            ? "border-hairline-strong text-muted-foreground hover:text-foreground"
            : "",
        ].join(" ")}
      >
        {recording ? <Square size={16} /> : <Mic size={16} />}
        {recording ? "结束录音" : "开始语音测试"}
      </Button>

      <div className="w-full rounded-xl border border-hairline bg-canvas-soft p-4 text-left">
        <div className="caption-label mb-2 text-muted-soft">实时转写</div>
        <p className="text-sm leading-6 text-muted-soft">
          {recording ? "聆听中，请开始说话…" : "等待语音输入…"}
        </p>
      </div>
    </div>
  );
}

function EditableTitle({
  value,
  onChange,
}: {
  value: string;
  onChange: (value: string) => void;
}) {
  const [editing, setEditing] = useState(false);
  const [draft, setDraft] = useState(value);
  const inputRef = useRef<HTMLInputElement>(null);

  useEffect(() => {
    if (editing) {
      inputRef.current?.focus();
      inputRef.current?.select();
    }
  }, [editing]);

  function startEdit() {
    setDraft(value);
    setEditing(true);
  }

  function commit() {
    const next = draft.trim();
    if (next) {
      onChange(next);
    }
    setEditing(false);
  }

  if (editing) {
    return (
      <input
        ref={inputRef}
        value={draft}
        onChange={(event) => setDraft(event.target.value)}
        onBlur={commit}
        onKeyDown={(event) => {
          if (event.key === "Enter") {
            event.preventDefault();
            commit();
          } else if (event.key === "Escape") {
            event.preventDefault();
            setEditing(false);
          }
        }}
        className="font-display display-sm w-[min(60vw,420px)] border-b border-primary bg-transparent text-ink outline-none"
      />
    );
  }

  return (
    <button
      type="button"
      onClick={startEdit}
      title="点击修改助手名称"
      className="group -mx-2 flex min-w-0 items-center gap-2 rounded-lg px-2 py-1 text-left transition-colors hover:bg-surface-strong"
    >
      <span className="font-display display-sm truncate text-ink">
        {value || "未命名助手"}
      </span>
      <Pencil
        size={16}
        className="shrink-0 text-muted-soft opacity-0 transition-opacity group-hover:opacity-100"
      />
    </button>
  );
}

function HelpHint({ text }: { text: string }) {
  return (
    <Popover>
      <PopoverTrigger asChild>
        <button
          type="button"
          aria-label="查看说明"
          onClick={(event) => event.stopPropagation()}
          className="flex h-5 w-5 items-center justify-center rounded-full text-muted-soft transition-colors hover:bg-surface-strong hover:text-foreground"
        >
          <HelpCircle size={14} />
        </button>
      </PopoverTrigger>
      <PopoverContent
        align="start"
        className="w-72 text-sm leading-6 text-muted-foreground"
      >
        {text}
      </PopoverContent>
    </Popover>
  );
}

function SectionCard({
  icon,
  title,
  description,
  children,
}: {
  icon?: React.ReactNode;
  title?: string;
  description?: string;
  children: React.ReactNode;
}) {
  const hasHeader = Boolean(title);

  return (
    <Card className="rounded-2xl border-hairline bg-card text-card-foreground shadow-sm">
      {hasHeader && (
        <CardHeader>
          <div className="flex items-center gap-3">
            {icon && (
              <div className="flex h-10 w-10 items-center justify-center rounded-full bg-surface-strong text-foreground">
                {icon}
              </div>
            )}

            <div className="flex items-center gap-1.5">
              <CardTitle className="text-base font-medium">{title}</CardTitle>
              {description && <HelpHint text={description} />}
            </div>
          </div>
        </CardHeader>
      )}

      <CardContent className={hasHeader ? "space-y-4" : undefined}>
        {children}
      </CardContent>
    </Card>
  );
}

function TextAreaField({
  label,
  value,
  placeholder,
  rows = 4,
  onChange,
}: {
  label?: string;
  value: string;
  placeholder?: string;
  rows?: number;
  onChange: (value: string) => void;
}) {
  return (
    <label className="block">
      {label && (
        <div className="mb-2 text-sm font-medium text-foreground">{label}</div>
      )}
      <Textarea
        value={value}
        placeholder={placeholder}
        onChange={(event) => onChange(event.target.value)}
        rows={rows}
        className="resize-none border-hairline-strong bg-background text-foreground placeholder:text-muted-soft"
      />
    </label>
  );
}

function SelectField({
  label,
  value,
  options,
  onChange,
}: {
  label?: string;
  value: string;
  options: string[];
  onChange: (value: string) => void;
}) {
  return (
    <div className="block">
      {label && (
        <div className="mb-2 text-sm font-medium text-foreground">{label}</div>
      )}

      <Select value={value} onValueChange={onChange}>
        <SelectTrigger className="w-full border-hairline-strong bg-background text-foreground">
          <SelectValue placeholder={label ? `请选择${label}` : "请选择"} />
        </SelectTrigger>

        <SelectContent className="border-hairline bg-popover text-popover-foreground">
          {options.map((item) => (
            <SelectItem key={item} value={item}>
              {item}
            </SelectItem>
          ))}
        </SelectContent>
      </Select>
    </div>
  );
}

function ToggleRow({
  title,
  description,
  checked,
  onChange,
}: {
  title: string;
  description: string;
  checked: boolean;
  onChange: (checked: boolean) => void;
}) {
  return (
    <div className="flex items-center justify-between rounded-xl border border-hairline bg-canvas-soft p-4">
      <div>
        <div className="font-medium text-foreground">{title}</div>
        <div className="mt-1 text-sm text-muted-foreground">{description}</div>
      </div>
      <Switch checked={checked} onCheckedChange={onChange} />
    </div>
  );
}