import { useAjax } from "@/Hook/useAjax"
import { txtLength } from "@/utils/utils";
import { Button, Input, InputRef, List, Popover } from "antd";
import React, { useEffect, useRef } from "react"
import { useState } from "react";
import './index.less'
import { getTextApi } from "@/services/adqV3/global";
import { SmileOutlined } from "@ant-design/icons";
import { emojiList } from "./const";


interface Props {
    value?: any,
    onChange?: (value: any) => void;
    style?: React.CSSProperties;
    placeholder?: string;
    maxTextLength?: number;
    isShowAjax?: boolean
    isSelectEmoji?: boolean
}

/**
 * 文案助手输入框
 * @param props 
 * @returns 
 */
const TextAideInput: React.FC<Props> = (props) => {

    /************************/
    const { value, onChange, style, placeholder, maxTextLength = 10, isShowAjax = true, isSelectEmoji = true } = props
    const [text, setText] = useState<any>(value)
    const [descriptionShow, setDescriptionshow] = useState(false)
    const [cursorPosition, setCursorPosition] = useState<number | null>(null);
    const inputRef = useRef<InputRef>(null);  // 获取 input DOM 元素
    const [emojiOpen, setEmojiOpen] = useState<boolean>(false)

    const getTextLsit = useAjax((params) => getTextApi(params))
    /************************/

    useEffect(() => {
        setText(value)
    }, [value])

    // 文案助手
    const textList = (keyword?: any) => {
        getTextLsit.run({ keyword, maxTextLength })
    }

    const insertTextAtCursor = (emoji: string) => {
        const inputElement = inputRef.current;
        if (inputElement) {
            if (cursorPosition !== null) {
                const newValue = text.slice(0, cursorPosition) + emoji + text.slice(cursorPosition);
                setText(newValue);
                onChange?.(newValue)
            } else {
                const newValue = text + emoji
                setText(newValue);
                onChange?.(newValue)
            }
            const newCursorPosition = (cursorPosition || text.length) + emoji.length;
            setCursorPosition(newCursorPosition);
            // 等待状态更新后再设置光标位置
            setTimeout(() => {
                inputElement.setSelectionRange(newCursorPosition, newCursorPosition);
                inputElement.focus();
            }, 0);
        }
    };

    return <div style={{ display: 'inline-flex', alignItems: 'center', columnGap: 5 }}>
        <Popover
            placement="topLeft"
            overlayClassName="textAideInputPopover"
            style={{ minWidth: 600 }}
            open={descriptionShow}
            content={<List
                loading={getTextLsit?.loading}
                size="small"
                style={{ maxHeight: 300, overflowX: 'auto', minWidth: 600 }}
                dataSource={getTextLsit?.data?.returnTexts}
                renderItem={(item: any) => <List.Item onClick={() => {
                    setText(item.text)
                    onChange && onChange(item.text)
                    setTimeout(() => { setDescriptionshow(false) }, 50)
                }}><span >{item.text}{item.tag && <span className="crt">{'CTR 高'}</span>}</span></List.Item>}
            />}
        >

            <Input.Group compact>
                <Input
                    ref={inputRef}
                    placeholder={placeholder}
                    style={style}
                    value={text}
                    onFocus={() => {
                        if (isShowAjax) {
                            setDescriptionshow(true)
                            textList(value)
                        }
                    }}
                    onBlur={(e) => {
                        setCursorPosition(e.target.selectionStart)
                        if (!emojiOpen) {
                            setTimeout(() => { setDescriptionshow(false) }, 0)
                        }
                    }}
                    onChange={(e) => {
                        let value = e.target.value
                        setText(value)
                        if (isShowAjax) {
                            textList(value)
                        }
                        onChange && onChange(value)
                    }}
                    allowClear
                />
                {isSelectEmoji && <Popover
                    placement="bottomRight"
                    overlayClassName="emoji"
                    content={<div className="emoji-list-scroll">
                        <ul className="emoji-list">{emojiList.map(item => <li key={item.text} onClick={() => insertTextAtCursor(item.text)}><img src={item.url} alt={item.text} /></li>)}</ul>
                    </div>}
                    trigger="click"
                    onOpenChange={(e) => {
                        setEmojiOpen(e)
                    }}
                >
                    <Button><SmileOutlined /></Button>
                </Popover>}
            </Input.Group>
        </Popover>
        <span>{`${txtLength(text)}/${maxTextLength}`}</span>
    </div>
}


export default React.memo(TextAideInput)