import * as React from 'react';
import { useParams, Link } from 'react-router-dom';
import { observer } from 'mobx-react';
import store from './store';
import './style.less';
import { Button, Table, TableColumnsType, Modal, TablePaginationConfig, Upload, UploadProps, message, Spin } from 'antd';
import { EditOutlined, DeleteOutlined, InboxOutlined, PlusOutlined, FileOutlined, ArrowLeftOutlined } from '@ant-design/icons';
import InfoModal from './components/InfoModal';
import InfoModalSetting from './components/InfoModalSetting';
import router from '@/router';

import { Record, RecordKonwledge } from './types';
import dayjs from 'dayjs';
import { set } from 'mobx';
import axios from 'axios';

const { Dragger } = Upload;

const KnowledgeLibInfo: React.FC = () => {

    const {
        state,
        init,
        onClickModify,
        onClickDelete,
        onChangePagination,
        onClickDocumentDetail,
        infoModalOnClickConfirm,
        infoModalOnClickCancel,
        infoModalSettingOnClickConfirm,
        infoModalSettingOnClickCancel,
        onClickSettings,
        reset
    } = store;
    const {
        knowledge_id,
        listLoading,
        page,
        list,
        infoModalOpen,
        infoModalId,
        infoModalSettingOpen,
        infoModalSettingId,
        knowledgeDetail,
    } = state;

    const [uploadLoading, setUploadLoading] = React.useState(false);

    const params = useParams();

    const [fileList, setFileList] = React.useState<any[]>([]);
    const [uploading, setUploading] = React.useState(false);

    const props: UploadProps = {
        name: 'files',
        multiple: true,
        action: '/api/deepseek/api/uploadDocument/' + params.knowledgeId,

        beforeUpload(file, fileList) {
            setUploadLoading(true);
            // const allowedExtensions = ['md', 'txt', 'pdf', 'jpg', 'png', 'jpeg', 'docx', 'xlsx', 'pptx', 'eml', 'csv', 'tar', 'gz', 'bz2', 'zip', 'rar', 'jar'];

            const allowedExtensions = ['txt', 'pdf', 'jpg', 'png', 'jpeg', 'doc', 'docx', 'ppt', 'pptx'];

            // 检查文件类型
            for (const file of fileList) {
                const fileExt = file.name.split('.').pop()?.toLowerCase();
                if (!fileExt || !allowedExtensions.includes(fileExt)) {
                    message.error(`不支持 ${fileExt} 格式的文件上传`);
                    setUploadLoading(false);
                    return Upload.LIST_IGNORE;
                }
            }

            // 检查文件大小
            let totalSize = 0;
            for (const file of fileList) {
                const fileExt = file.name.split('.').pop()?.toLowerCase();
                const fileSizeMB = file.size / 1024 / 1024;

                if (fileSizeMB > 30) {
                    message.error('单个文件不能大于30M');
                    setUploadLoading(false);
                    return Upload.LIST_IGNORE;
                }

                if (['jpg', 'png', 'jpeg'].includes(fileExt!) && fileSizeMB > 5) {
                    message.error('单张图片不能大于5M');
                    setUploadLoading(false);
                    return Upload.LIST_IGNORE;
                }

                totalSize += fileSizeMB;
            }

            if (totalSize > 125) {
                message.error('文件总大小超过125M');
                setUploadLoading(false);
                return Upload.LIST_IGNORE;
            }

        },
        onChange(info) {
            const { status } = info.file;

            if (status !== 'uploading') {
                console.log(status, 'status--uploading');
            }
            if (status === 'done') {
                console.log(status, 'status--done');
                console.info(info.file.response, 'info.file.response.data');
                if (info.file.response.code === 200 && info.file.response.data === 1) {
                    message.success(`${info.file.name} file uploaded successfully.`);
                    init(params.knowledgeId);
                }
                setUploadLoading(false);
            } else if (status === 'error') {
                console.log(status, 'status--error');
                message.error(`${info.file.name} file upload failed.`);
                setUploadLoading(false);
            }
        },
        onDrop(e) {
            console.log('Dropped files', e.dataTransfer.files);
        },
    };

    const handleUpload = async () => {
        if (fileList.length === 0) return;

        setUploading(true);
        const formData = new FormData();

        // 添加所有文件
        fileList.forEach(file => {
            if (file.originFileObj) {
                formData.append('files', file.originFileObj);
            }
        });

        try {
            const res = await axios.post('/api/deepseek/api/uploadDocument/' + params.knowledgeId, formData, {
                headers: { 'Content-Type': 'multipart/form-data' }
            });

            message.success(`${fileList.length}个文件上传成功`);
            setFileList([]);
        } catch (err) {
            message.error('上传失败');
        } finally {
            setUploading(false);
        }
    };

    React.useEffect(() => {
        init(params.knowledgeId);
        return () => reset();
    }, []);

    const columns: TableColumnsType<Record> = [
        {
            title: '序号',
            dataIndex: 'index',
            width: 80,
            render: (text, record, index) => {
                return index + 1;
            }
        },
        {
            title: '文件名',
            dataIndex: 'name',
            width: 300,
            render: (text, record) => {
                return (
                    `${text}`
                )
            }
        },
        {
            title: '文件大小',
            dataIndex: 'length',
            width: 100,
            render: (text) => {
                if (text) {
                    const size = (text / 1024 / 1024).toFixed(2);
                    return `${size} M`;
                }else{
                    return '--'
                }
            }
        },
        {
            title: '字符数量',
            dataIndex: 'wordNum',
            width: 100,
            render: (text) => {
                if (text) {
                    return `${text}`;
                }else{
                    return '--'
                }
            }
        },
        {
            title: '分段',
            dataIndex: 'sliceTotal',
            width: 100,
            render: (text) => {
                if (text) {
                    return `${text}`;
                } else {
                    return '--';
                }
            }
        },
        {
            title: '上传时间',
            dataIndex: 'createTime',
            width: 180,
            render: (text) => {
                if (text) {
                    return dayjs(text).format('YYYY-MM-DD HH:mm:ss');
                } else {
                    return '--';
                }
            }
        },
        {
            title: '更新时间',
            dataIndex: 'updateTime',
            width: 180,
            render: (text) => {
                if (text) {
                    return dayjs(text).format('YYYY-MM-DD HH:mm:ss');
                } else {
                    return '--';
                }
            }
        },
        {
            title: '操作',
            dataIndex: 'operation',
            width: 180,
            fixed: 'right',
            render: (text, record) => {
                return (
                    <>
                        <a style={{ marginRight: 16 }}
                            onClick={() => {
                                router.navigate({ pathname: '/deepseek/knowledgeLib/slice/' + record.documentId + '/' + params.knowledgeId + '/' + state.knowledgeDetail.embeddingId });
                            }}>
                            切片
                        </a>
                        <a
                            style={{ marginRight: 16 }}
                            onClick={() => {
                                onClickSettings(record.documentId);
                            }}
                        >
                            配置
                        </a>

                        <a
                            style={{ marginRight: 16 }}
                            onClick={() => {
                                onClickModify(record.documentId);
                            }}>
                            <EditOutlined />
                        </a>

                        <a
                            className='text-error'
                            onClick={() => {
                                Modal.confirm({
                                    title: '删除',
                                    content: `确定删除知识文件:${record.name}吗？`,
                                    okType: 'danger',
                                    onOk: async () => {
                                        await onClickDelete(record.documentId);
                                    }
                                });
                            }}
                        >
                            <DeleteOutlined />
                        </a>
                    </>
                )
            }
        }
    ];

    const paginationConfig: TablePaginationConfig = {
        // 显示数据总量
        showTotal: (total: number) => {
            return `共 ${total} 条`;
        },
        // 展示分页条数切换
        showSizeChanger: true,
        // 指定每页显示条数
        pageSizeOptions: ['10', '20', '50', '100'],
        // 快速跳转至某页
        showQuickJumper: true,
        current: page.page,
        pageSize: page.size,
        total: page.total,
        onChange: async (page, pageSize) => {
            await onChangePagination(page, pageSize);
        },
    };

    return (
        <div className='knowledgeLibInfo'>
            <Spin spinning={uploadLoading || listLoading}>
                <div className='knowledgeLibList-operation'>
                    {
                        page.total === 0 &&
                        <>
                        <div>
                                <Button type='primary' icon={<ArrowLeftOutlined />} onClick={() => {
                                    router.navigate(-1);
                                }}>返回</Button>
                            </div>
                            <div style={{ marginTop: 20, width: '100%', height: '200px' }}>
                                <Dragger {...props}>
                                    <p className="ant-upload-drag-icon">
                                        <InboxOutlined />
                                    </p>
                                    <p >
                                        点击上传,或拖放文件到此处
                                    </p >
                                    <p className="ant-upload-hint">
                                        支持文件格式txt, pdf, jpg, png, jpeg, doc, docx, ppt, pptx,
                                        单个文档小于30M,单张图片小于5M,文件总
                                        大小不得超过125M.
                                    </p>
                                </Dragger>
                            </div>
                        </>
                    }
                </div>
                {
                    page.total > 0 &&
                    <>
                        <div style={{ display: 'flex', justifyContent: 'space-between' }}>
                            <div>
                                <Button type='primary' icon={<ArrowLeftOutlined />} onClick={() => {
                                    router.navigate(-1);
                                }}>返回</Button>
                            </div>
                            <div>
                                <Upload {...props}>
                                    <Button type='primary' icon={<PlusOutlined />}>上传知识文件</Button>
                                </Upload>
                            </div>
                            
                        </div>
                        

                        <Table
                            scroll={{ x: 'max-content' }}
                            rowKey={(record) => record.documentId}
                            loading={listLoading}
                            columns={columns}
                            dataSource={list}
                            pagination={paginationConfig}
                        />
                        {
                            infoModalOpen &&
                            <InfoModal
                                id={infoModalId}
                                open={infoModalOpen}
                                onClickConfirm={infoModalOnClickConfirm}
                                onClickCancel={infoModalOnClickCancel}
                            />
                        }

                        {
                            infoModalSettingOpen &&
                            <InfoModalSetting
                                id={infoModalSettingId}
                                open={infoModalSettingOpen}
                                onClickConfirm={infoModalSettingOnClickConfirm}
                                onClickCancel={infoModalSettingOnClickCancel}
                            />
                        }
                    </>
                }
            </Spin>
        </div>
    );
};

export default observer(KnowledgeLibInfo);