import React, { useRef, useState } from "react";
import {
  CloseOutlined,
  SendOutlined,
  CaretDownOutlined,
} from "@ant-design/icons";
import { Button, Tooltip, Input, Form, Dropdown, message } from "antd";
import type { DropDownProps } from "antd";
import { useChat } from "@/hooks/useChat";
import {} from "react-markdown";

const items = [
  { key: "1", label: "流程图" },
  { key: "2", label: "泳道图" },
  { key: "3", label: "ER实体图" },
  { key: "4", label: "组织图" },
  { key: "5", label: "时序图" },
];
export default function AICreator(props: {
  type: "mindmap" | "flow";
  onClose?: () => void;
  onChange?: (data: any) => void;
  onError?: (err: Error) => void;
}) {
  const [focused, setFocused] = React.useState(false);
  const [input, setInput] = useState("");
  const [messageApi, contextHolder] = message.useMessage();
  const messageKey = "ailoading";
  const msgContent = useRef<string>("");

  const { loading, onRequest, cancel } = useChat({
    app_name: "system_design",
    onUpdate: (msg) => {
      setInput("");
      msgContent.current += msg.answer;
    },
    onSuccess: (msg) => {
      console.log("加载完毕！", msgContent.current);
      messageApi.open({
        key: messageKey,
        type: "success",
        content: "AI创作完成",
        duration: 2,
        style: {
          marginTop: 300,
        },
      });
      handleParse();
    },
    onError: (err) => {
      messageApi.open({
        key: messageKey,
        type: "error",
        content: err.message || "AI创作失败",
        duration: 2,
        style: {
          marginTop: 300,
        },
      });
    },
  });

  function regexExtractJSON(markdown: string) {
    const jsonRegex = /```(?:json)?\n([\s\S]*?)\n```/g;
    const matches = [];
    let match;

    while ((match = jsonRegex.exec(markdown)) !== null) {
      try {
        const jsonObj = JSON.parse(match[1]);
        matches.push(jsonObj);
      } catch (e) {
        console.warn("无效JSON:", match[0]);
      }
    }
    return matches;
  }

  const handleParse = () => {
    try {
      // 根据markdown格式取出json部分数据
      const md = msgContent.current;
      let json: string;
      if (md.includes("```json")) {
        json = regexExtractJSON(msgContent.current)?.[0];
      } else {
        json = JSON.parse(msgContent.current);
      }

      console.log("解析结果：", json);
      props.onChange?.(json);
    } catch (error) {
      messageApi.open({
        key: messageKey,
        type: "error",
        content: "AI创作失败",
        duration: 2,
        style: {
          marginTop: 300,
        },
      });
      console.error(error);
      props.onError?.(new Error("AI创作失败"));
    }
  };

  const [graphType, setGraphType] = useState<string>("流程图");
  const dropDownMenu: DropDownProps["menu"] = {
    items,
    onClick: (info) => {
      console.log(info);
      const type = items.find((item) => item.key === info.key);
      setGraphType(type?.label || "流程图");
    },
  };

  const handleStop = () => {
    cancel();
    messageApi.open({
      key: messageKey,
      type: "error",
      content: "AI创作已取消",
      duration: 2,
      style: {
        marginTop: 300,
      },
    });
  };

  // 处理提交
  const onSubmit = () => {
    if (input.trim()) {
      onRequest(
        `设计一个${graphType}, 返回图形json数据, 具体需求描述：${input}`,
        undefined,
        input
      );

      messageApi.open({
        key: messageKey,
        type: "loading",
        content: "AI创作中...",
        duration: 0,
        style: {
          marginTop: 300,
        },
      });
    }
  };

  React.useEffect(() => {
    return () => {
      // 取消所有进行中的请求
      const controller = new AbortController();
      controller.abort();
    };
  }, []);

  const handleList = [
    {
      key: "style",
      label: "风格美化",
      icon: "icon-yijianmeihua",
      color: "#a171f2",
    },
    {
      key: "grammar",
      label: "语法修复",
      icon: "icon-tubiao_yufajiucuo",
      color: "#00c4ad",
    },
    {
      key: "translation_en",
      label: "翻译为英文",
      icon: "icon-fanyiweiyingwen",
      color: "#8c4ff0",
    },
    {
      key: "translation_zh",
      label: "翻译为中文",
      icon: "icon-fanyiweizhongwen",
      color: "#3d72fb",
    },
  ];

  const getCurrentCells = () => {
    
  };

  // 风格美化
  const handleStyle = () => {
    onRequest('生成一个美化风格的配置', {
      onUpdate: (data) => {
        console.log('style update:', data);
      },
      onSuccess: (data) => {
        console.log(data);
      },
      onError: (err) => {
        console.error(err);
      }
    })
  };

  // 语法修复
  const handleGrammar = () => {

  };

  // 翻译
  const handleTranslation = (lang: "en" | "zh") => {
    
  };

  const handleAiFeature = (feature: string) => {
    switch (feature) {
      case "style":
        handleStyle();
        break;
      case "grammar":
        handleGrammar();
        break;
      case "translation_en":
        handleTranslation("en");
        break;
      case "translation_zh":
        handleTranslation("zh");
        break;
      default:
        break;
    }
  };

  return (
    <div className="flex-1 h-full" style={{ backgroundImage: "linear-gradient(137deg, #e5f4ff 0%, #efe7ff 100%)"}}>
      {contextHolder}
      <div className="chat-head w-full h-40px px-10px color-#333 flex items-center justify-between">
        <span className="text-14px">
          <svg className="icon h-32px w-32px" aria-hidden="true">
            <use xlinkHref="#icon-AI1"></use>
          </svg>
          <span>AI创作</span>
        </span>
        <span>
          <Button
            type="text"
            size="small"
            icon={<CloseOutlined />}
            onClick={() => props.onClose?.()}
          ></Button>
        </span>
      </div>

      <div className="text-14px pl-12px text-#333">绘制图形</div>
      <div className="chat-content px-10px overflow-y-auto mt-12px">
        <div
          style={{
            borderColor: focused ? "#1890ff" : "#ddd",
          }}
          className="chat-foot bg-#fff rounded-10px border border-solid border-1px shadow-sm"
        >
          <Dropdown menu={dropDownMenu} placement="bottomLeft">
            <div className="text-12px pl-10px pt-10px cursor-pointer">
              帮我绘制-{graphType}
              <CaretDownOutlined />
            </div>
          </Dropdown>
          <Form onFinish={onSubmit}>
            <Input.TextArea
              rows={3}
              autoSize={{ maxRows: 3, minRows: 3 }}
              placeholder="你可以这样问：用户登陆流程图"
              variant="borderless"
              onFocus={() => setFocused(true)}
              onBlur={() => setFocused(false)}
              value={input}
              onChange={(e) => setInput(e.target.value)}
              disabled={loading}
              onPressEnter={onSubmit}
            />
            <div className="text-right p-10px">
              {loading ? (
                <Tooltip title="停止生成">
                  <Button
                    type="primary"
                    shape="circle"
                    icon={<i className="iconfont icon-stopcircle" />}
                    onClick={handleStop}
                  ></Button>
                </Tooltip>
              ) : (
                <Button
                  type="text"
                  icon={<SendOutlined />}
                  disabled={!input.trim()}
                  htmlType="submit"
                ></Button>
              )}
            </div>
          </Form>
        </div>
      </div>

      <div className="text-14px pl-12px text-#333 mt-32px">图形处理</div>
      <div className="flex flex-wrap gap-10px p-10px">
        {handleList.map((item) => (
          <div
            key={item.key}
            className="flex-[40%] h-50px bg-#fff rounded-10px shadow-sm flex items-center pl-10px text-12px cursor-pointer"
            onClick={() => handleAiFeature(item.key)}
          >
            <i
              className={`iconfont ${item.icon} text-16px`}
              style={{ color: item.color }}
            ></i>
            <span className="ml-10px">{item.label}</span>
          </div>
        ))}
      </div>
    </div>
  );
}