import { useState } from "react";
import {
  AppstoreOutlined,
  CopyOutlined,
  EditOutlined,
  FileTextOutlined,
  FireOutlined,
  GlobalOutlined,
  MessageOutlined,
  SmileOutlined,
  ThunderboltOutlined,
} from "@ant-design/icons";

export type CopywritingType =
  | "self-media"
  | "universal"
  | "original"
  | "imitate"
  | "wechat"
  | "crossborder"
  | "emoji"
  | "more";

interface CopywritingTypeOption {
  key: CopywritingType;
  label: string;
  icon: React.ReactNode;
  description: string;
}

const copywritingTypes: CopywritingTypeOption[] = [
  { key: "self-media", label: "自媒体文案", icon: <MessageOutlined />, description: "小红书/抖音/公众号风格" },
  { key: "universal", label: "万能写作", icon: <EditOutlined />, description: "通用场景长文短句" },
  { key: "original", label: "一键原创", icon: <ThunderboltOutlined />, description: "快速改写去重" },
  { key: "imitate", label: "文案仿写", icon: <CopyOutlined />, description: "参照爆款风格重写" },
  { key: "wechat", label: "微信营销文案", icon: <FileTextOutlined />, description: "朋友圈/社群转化文案" },
  { key: "crossborder", label: "跨境商品文案", icon: <GlobalOutlined />, description: "Amazon/Temu 卖点描述" },
  { key: "emoji", label: "文案加Emoji", icon: <SmileOutlined />, description: "自动插入表情符号" },
  { key: "more", label: "更多场景", icon: <AppstoreOutlined />, description: "持续更新中" },
];

const wordCountOptions = ["不限", "100字", "300字", "500字", "800字"];

const exampleResults: Record<CopywritingType, Array<{ title: string; body: string; points: string[] }>> = {
  "self-media": [
    {
      title: "超值干发神器，吸水力 MAX！",
      body: "家人们，我发现了一款干发帽，双层加厚吸水力超强！而且只要个位数就能到手啊！",
      points: [
        "超强吸水力：这款干发帽采用微纤维材质，轻轻一裹，水分立马被吸走，头发快速告别湿漉漉。",
        "柔软亲肤：触感超级柔软，对皮肤和头发都是温柔的抚摸，不会有摩擦伤害哦。",
        "加厚设计：比普通干发帽更厚实，吸水效果自然更胜一筹，长发妹子的福音！",
        "方便携带：轻巧不占空间，不论是去健身房还是旅行，携带都毫无负担。",
      ],
    },
  ],
  universal: [
    {
      title: "直接抄作业！科学的减重方法必试！",
      body: "姐妹们冲鸭！有很多科学有效的方式可以帮助我们实现理想体重，今天就来分享一下必试的方法！",
      points: [
        "快乐有氧运动：科学的减重方式，通过有氧运动如慢跑、游泳等，能够促进脂肪燃烧，让身体更健康！",
        "均衡饮食规划：摄入足够的蛋白质、蔬果以及谷物，避免过多的高糖和高脂食物，帮助达到减重目标！",
        "科学计算热量：了解自己每日所需的卡路里摄入量，合理安排每餐的热量搭配，控制总摄入量。",
        "坚持低强度运动：逐渐增加日常活动量，如步行、瑜伽等，通过持续的轻度运动，加速代谢！",
        "合理休息调节：不要忽视睡眠的重要性，保证每晚充足的睡眠时间，帮助恢复体力和新陈代谢。",
      ],
    },
  ],
  original: [
    {
      title: "原创种草｜这款干发帽真的值得入！",
      body: "洗完头最烦的就是湿哒哒滴水？试试这条双层加厚干发帽，吸水速度真的惊艳到我。",
      points: [
        "加厚材质，吸水更快更彻底",
        "柔软不勒头，长发短发都能用",
        "轻便好收纳，差旅党必备",
        "性价比超高，入手不亏",
      ],
    },
  ],
  imitate: [
    {
      title: "仿写爆款｜让头发速干的小心机",
      body: "姐妹们有没有发现，最近超火的干发帽真的太好用了！轻轻一裹，几分钟头发就半干了。",
      points: [
        "双层加厚，吸水力翻倍",
        "柔软亲肤，不伤发质",
        "小巧便携，出门也能带",
        "颜值在线，多色可选",
      ],
    },
  ],
  wechat: [
    {
      title: "朋友圈文案｜个位数到手的干发神器",
      body: "今天必须给大家安利这个干发帽！双层加厚，吸水超强，个位数就能到手，真的不冲吗？",
      points: [
        "微纤维材质，轻柔速干",
        "加厚设计，吸水更彻底",
        "小巧便携，旅行出差都能带",
        "限时好价，手慢无",
      ],
    },
  ],
  crossborder: [
    {
      title: "Amazon Listing｜Super Absorbent Hair Turban",
      body: "Made with ultra-soft microfiber, this double-layer hair turban dries hair quickly while protecting delicate strands.",
      points: [
        "Double-layer microfiber for maximum absorbency",
        "Gentle on hair and skin, no frizz or breakage",
        "Lightweight and travel-friendly design",
        "Secure button closure stays in place",
      ],
    },
  ],
  emoji: [
    {
      title: "✨个位数到手的干发神器，吸水力 MAX！",
      body: "家人们👋，我发现了一款超棒的干发帽💧，双层加厚吸水力超强！而且只要个位数就能到手啊🛒！",
      points: [
        "💦 超强吸水力：微纤维材质，轻轻一裹水分吸走",
        "☁️ 柔软亲肤：触感温柔，不伤头发和皮肤",
        "🎒 方便携带：轻巧不占空间，旅行健身都能带",
        "💰 超值价格：个位数到手，性价比拉满",
      ],
    },
  ],
  more: [
    {
      title: "更多场景示例",
      body: "选择左侧具体文案类型即可生成对应场景内容，更多场景持续更新中。",
      points: ["选择合适的文案类型", "填写内容需求", "选择生成字数", "点击开始生成"],
    },
  ],
};

export interface EcommerceCopywritingPanelProps {
  onClose: () => void;
}

export default function EcommerceCopywritingPanel({ onClose }: EcommerceCopywritingPanelProps) {
  const [selectedType, setSelectedType] = useState<CopywritingType>("self-media");
  const [requirement, setRequirement] = useState("");
  const [wordCount, setWordCount] = useState("不限");
  const [loading, setLoading] = useState(false);
  const [results, setResults] = useState<typeof exampleResults["self-media"]>([]);

  const handleGenerate = () => {
    setLoading(true);
    setResults([]);
    // 模拟生成延迟
    window.setTimeout(() => {
      setResults(exampleResults[selectedType]);
      setLoading(false);
    }, 1200);
  };

  const selectedTypeLabel = copywritingTypes.find((item) => item.key === selectedType)?.label ?? "文案";

  return (
    <main className="ecom-copywriting-page ecom-tool-page-enter" aria-label="一键文案">
      <div className="ecom-copywriting-body">
        <aside className="ecom-copywriting-panel" aria-label="文案设置">
          <header className="ecom-copywriting-panel-head">
            <strong className="ecom-copywriting-page-title">一键文案</strong>
            <button type="button" className="ecom-copywriting-back" onClick={onClose}>
              首页
            </button>
            <button type="button" className="ecom-copywriting-back" onClick={onClose}>
              上一页
            </button>
          </header>

          <section className="ecom-copywriting-section">
            <strong className="ecom-copywriting-section-title">选择文案类型</strong>
            <div className="ecom-copywriting-type-grid">
              {copywritingTypes.map((item) => (
                <button
                  key={item.key}
                  type="button"
                  className={`ecom-copywriting-type-card${selectedType === item.key ? " is-active" : ""}`}
                  onClick={() => setSelectedType(item.key)}
                >
                  <span className="ecom-copywriting-type-icon" aria-hidden="true">
                    {item.icon}
                  </span>
                  <span className="ecom-copywriting-type-label">{item.label}</span>
                  <span className="ecom-copywriting-type-desc">{item.description}</span>
                </button>
              ))}
            </div>
          </section>

          <section className="ecom-copywriting-section">
            <strong className="ecom-copywriting-section-title">内容需求</strong>
            <textarea
              className="ecom-copywriting-textarea"
              value={requirement}
              onChange={(event) => setRequirement(event.target.value)}
              placeholder="例如：主题、核心卖点、适用人群、期望场景等"
              rows={5}
            />
          </section>

          <section className="ecom-copywriting-section">
            <strong className="ecom-copywriting-section-title">生成字数</strong>
            <div className="ecom-copywriting-wordcount">
              {wordCountOptions.map((item) => (
                <button
                  key={item}
                  type="button"
                  className={wordCount === item ? "is-active" : ""}
                  onClick={() => setWordCount(item)}
                >
                  {item}
                </button>
              ))}
            </div>
          </section>

          <button
            type="button"
            className="ecom-copywriting-generate"
            onClick={handleGenerate}
            disabled={loading}
          >
            {loading ? (
              <>
                <span className="ecom-copywriting-spinner" />
                生成中…
              </>
            ) : (
              <>
                <ThunderboltOutlined />
                开始生成
              </>
            )}
          </button>
        </aside>

        <section className="ecom-copywriting-stage" aria-label="生成文案预览">
          <header className="ecom-copywriting-preview-head">
            <h1>生成文案</h1>
            <p>
              基于 <span>{selectedTypeLabel}</span> 风格，AI 为你生成高转化文案。
            </p>
          </header>

          <div className="ecom-copywriting-results">
            {results.length === 0 && !loading ? (
              <div className="ecom-copywriting-empty">
                <FileTextOutlined />
                <strong>等待生成</strong>
                <em>填写需求后点击「开始生成」即可查看文案结果</em>
              </div>
            ) : null}

            {loading ? (
              <div className="ecom-copywriting-loading">
                <span className="ecom-copywriting-spinner" />
                <span>AI 正在生成文案，请稍候…</span>
              </div>
            ) : null}

            {results.map((item, index) => (
              <article key={index} className="ecom-copywriting-result-card">
                <header>
                  <span>示例 {index + 1}</span>
                  <strong>{item.title}</strong>
                </header>
                <p className="ecom-copywriting-result-body">{item.body}</p>
                <ul className="ecom-copywriting-result-points">
                  {item.points.map((point, pointIndex) => (
                    <li key={pointIndex}>
                      <span>{pointIndex + 1}</span>
                      {point}
                    </li>
                  ))}
                </ul>
              </article>
            ))}
          </div>
        </section>
      </div>
    </main>
  );
}