<template>
    <div id="file-upload">
        <el-row id="el-row">
            <!--拖拽上传-->
            <el-col v-if="showDrag==true" class="withDrag">
                <el-upload
                        ref="upload"
                        drag
                        :multiple="multiple"
                        list-type="text"
                        :action="getAction()"
                        :headers="headers"
                        :file-list="uploadFileList"
                        :show-file-list="false"
                        :http-request="customUploadFile">
                    <div>
                        <i class="el-icon-upload"></i>
                        <div>
                            <span>{{$t('components.diskFileUpload.fileDrag')}}</span>
                            <span style="color:#409EFF;">{{$t('components.diskFileUpload.clickUpload')}}</span>
                        </div>
                    </div>
                </el-upload>
            </el-col>
            <!--点击上传-->
            <el-col v-else class="withoutDrag">
                <el-upload
                        ref="upload"
                        :multiple="multiple"
                        list-type="text"
                        :action="getAction()"
                        :headers="headers"
                        :file-list="uploadFileList"
                        :show-file-list="false"
                        :http-request="customUploadFile">
                    <el-button type="primary" size="small" icon="el-icon-upload">
                        {{$t('components.diskFileUpload.clickUpload')}}
                    </el-button>
                </el-upload>
            </el-col>
            <!--文件操作-->
            <el-col v-for="(item,index) in uploadFileList" :key="index" class="fileList">
                <div class="fileTitle">
                    <i class="el-icon-document"></i>
                    <span>{{item.name}}</span>
                </div>
                <div class="fileMain">
                    <el-link type="success" icon="el-icon-download" @click="onDownload(item)">
                        {{$t('components.diskFileUpload.load')}}
                    </el-link>
                    <el-link type="warning" icon="el-icon-view" v-show="showPreview" @click="onPreview(item)">
                        {{$t('components.diskFileUpload.preview')}}
                    </el-link>
                    <el-link type="primary" icon="el-icon-edit"
                             v-show="showEdit && (item.name.match(/^.+\.(doc|DOC|docx|DOCX|wps|WPS|xls|XLS|xlsx|XLSX|ppt|PPT|et|ET)$/))"
                             @click="onEdit(item)">{{$t('components.diskFileUpload.edit')}}
                    </el-link>
                    <el-link icon="el-icon-camera"
                              v-show="showOcrview && (item.name.match(/^.+\.(gif|GIF|jpg|JPG|jpeg|JPEG|png|PNG|bmp|BMP|pdf|PDF)$/))"
                             @click="onOcr(item)">OCR
                    </el-link>
                    <el-link type="danger" icon="el-icon-delete" @click="onRemove(item,index)">
                        {{$t('components.diskFileUpload.delete')}}
                    </el-link>
                </div>
            </el-col>
        </el-row>
        <!-- 自定义弹框 -->
        <div class="dialogDiv">
            <el-dialog
                    :title="dialogTitle"
                    center
                    width="70%"
                    top="5vh"
                    :visible="showDialog"
                    :close-on-click-modal="true"
                    :show-close="true"
                    :before-close="dialogClose"
                    :modal-append-to-body="false">
                <div style="height: 100%;">
                    <iframe id="fileIframe" :src="iframeUrl" frameborder="0" width="100%"></iframe>
                </div>
            </el-dialog>
        </div>
    </div>
</template>

<script lang="ts">
import {Component, Vue, Prop} from 'vue-property-decorator';
import {Message, MessageBox} from 'element-ui';
import Axios from 'axios';
import {Unsubscribable} from 'rxjs';
import { getCookie } from 'qx-util';
import { AppServiceBase, getSessionStorage } from 'ibiz-core';

@Component({})
export default class DiskFileUpload extends Vue {

    /**
     * 当前表单对象
     *
     * @type {*}
     * @memberof DiskFileUpload
     */
    @Prop() public data!: any;

    /**
     * 当前属性名
     *
     * @type {string}
     * @memberof DiskFileUpload
     */
    @Prop() public formItemName!: string;

    /**
     * 当前属性值
     *
     * @type {string}
     * @memberof DiskFileUpload
     */
    @Prop() public value!: string;

    /**
     * 是否多选
     *
     * @type {boolean}
     * @memberof AppFileUpload
     */
    @Prop({default: true}) public multiple?: boolean;

    /**
     * 当前表单状态
     *
     * @type {*}
     * @memberof DiskFileUpload
     */
    @Prop() public formState!: any;

    /**
     * 默认为当前实体名称，有指定则按表单参数
     *
     * @type {string}
     * @memberof DiskFileUpload
     */
    @Prop() public folder!: string;

    /**
     * 默认为当前实体主键id，有指定则按表单参数
     *
     * @type {string}
     * @memberof DiskFileUpload
     */
    @Prop() public ownerid!: string;

    /**
     * 默认为当前属性名，有指定则按表单参数
     *
     * @type {string}
     * @memberof DiskFileUpload
     */
    @Prop() public ownertype!: string;

    /**
     * 持久化
     *
     * @type {boolean}
     * @memberof DiskFileUpload
     */
    @Prop({default: false}) public persistence?: boolean;

    /**
     * 是否显示拖拽区域
     *
     * @type {boolean}
     * @memberof DiskFileUpload
     */
    @Prop({default: false}) public showDrag?: boolean;

    /**
     * 是否显示预览按钮
     *
     * @type {boolean}
     * @memberof DiskFileUpload
     */
    @Prop({default: false}) public showPreview?: boolean;

    /**
     * 是否显示在线编辑按钮
     *
     * @type {boolean}
     * @memberof DiskFileUpload
     */
    @Prop({default: false}) public showEdit?: boolean;

    /**
     * 是否显示OCR按钮
     *
     * @type {boolean}
     * @memberof DiskFileUpload
     */
    @Prop({default: false}) public showOcrview?: boolean;

    /**
     * 表单是否处于编辑状态（有真实主键,srfuf='1';srfuf='0'时处于新建未保存）
     *
     * @type {string}
     * @memberof DiskFileUpload
     */
    public srfuf: string = '0';


    /**
     * 文件列表
     *
     * @type {Array<any>}
     * @memberof DiskFileUpload
     */
    public uploadFileList: Array<any> = [];

    /**
     * 当前登陆人的token
     *
     * @type {string}
     * @memberof DiskFileUpload
     */
    public token: string = "Bearer " + localStorage.getItem('token');

    /**
     * 上传文件请求头
     *
     * @type {*}
     * @memberof DiskFileUpload
     */
    public headers: any = {Authorization: this.token};

    /**
     * 表单状态事件
     *
     * @type {*}
     * @memberof DiskFileUpload
     */
    public formStateEvent: any | Unsubscribable | undefined;

    /**
     * 批量更新标识，false为不更新，true才可以更新
     *
     * @type {boolean}
     * @memberof DiskFileUpload
     */
    public isUpdateBatch: boolean = true;

    /**
     * 新建状态标识,true为新建，false为编辑
     *
     * @type {boolean}
     * @memberof DiskFileUpload
     */
    public isCreate: boolean = true;

    /**
     * 自定义弹框标题
     *
     * @type {*}
     * @memberof DiskFileUpload
     */
    public dialogTitle: any = '';

    /**
     * 是否显示自定义弹框
     *
     * @type {boolean}
     * @memberof DiskFileUpload
     */
    public showDialog: boolean = false;

    /**
     * 嵌入自定义弹框中iframe的url
     *
     * @type {*}
     * @memberof DiskFileUpload
     */
    public iframeUrl: any = '';

    /**
     * 关闭自定义弹框
     *
     * @memberof DiskFileUpload
     */
    public dialogClose() {
        this.dialogTitle = '';
        this.showDialog = false;
        this.iframeUrl = '';
        let iframe: any = document.getElementById("fileIframe");
        iframe.parentNode.removeChild("fileIframe");
    }

    /**
     * 拼接上传路径
     *
     * @memberof DiskFileUpload
     */
    public getAction() {
        return '/net-disk/upload/' + this.getFolder() + '?ownertype=' + this.getOwnertype() + '&ownerid=' + this.getOwnerid();
    }

    /**
     * return folder
     *
     * @memberof DiskFileUpload
     */
    public getFolder() {
        return typeof this.folder == "string" ? this.folder : JSON.stringify(this.folder);
    }

    /**
     * return ownertype
     *
     * @memberof DiskFileUpload
     */
    public getOwnertype() {
        return typeof this.ownertype == "string" ? this.ownertype : JSON.stringify(this.ownertype);
    }

    /**
     * return ownerid
     *
     * @memberof DiskFileUpload
     */
    public getOwnerid() {
        return typeof this.ownerid == "string" ? this.ownerid : JSON.stringify(this.ownerid);
    }

    /**
     * vue创建
     *
     * @memberof DiskFileUpload
     */
    public created() {
        this.setHeaders();
        this.formStateEvent = this.formState.subscribe(($event: any) => {
            // 表单加载完成
            if (Object.is($event.type, 'load')) {
                const data = JSON.parse(JSON.stringify($event.data));
                // 编辑表单，保存时不进行批量更新
                if (data.srfuf == '1') {
                    this.isCreate = false;
                    this.isUpdateBatch = false;
                }
                // 当persistence = true时
                if (this.persistence == true) {
                    // 直接从表单的data数据里获取当前属性的值
                    if (data[this.formItemName] && this.uploadFileList.length == 0) {
                        const files = JSON.parse(data[this.formItemName]);
                        for (let i = 0; i < files.length; i++) {
                            this.uploadFileList.push(files[i]);
                        }
                    }
                } else {
                    // 发送get请求获取文件列表
                    this.getFiles();
                }
            }
            // 表单保存完成
            if (Object.is($event.type, 'save')) {
                // 批量更新文件表中的ownerid
                if (this.isUpdateBatch == true && this.uploadFileList.length > 0) {
                    this.updateFileBatch(this.uploadFileList);
                }
            }
        });
    }

    /**
     * 设置请求头
     * 
     * @memberof AppFileUpload
     */
    public setHeaders(){
        if (AppServiceBase.getInstance().getAppEnvironment().SaaSMode) {
            let activeOrgData = getSessionStorage('activeOrgData');
            this.headers['srforgid'] = activeOrgData?.orgid;
            this.headers['srfsystemid'] = activeOrgData?.systemid;
            if(getSessionStorage("srfdynaorgid")){
                this.headers['srfdynaorgid'] = getSessionStorage("srfdynaorgid");
            }
        } else {
            if(getSessionStorage("srfdynaorgid")){
                this.headers['srfdynaorgid'] = getSessionStorage("srfdynaorgid");
            }
        }
        if (getCookie('ibzuaa-token')) {
            this.headers['Authorization'] = `Bearer ${getCookie('ibzuaa-token')}`;
        } else {
            // 第三方应用打开免登
            if (sessionStorage.getItem("srftoken")) {
                const token = sessionStorage.getItem('srftoken');
                this.headers['Authorization'] = `Bearer ${token}`;
            }
        }
    }

    /**
     * 获取文件列表
     *
     * @memberof DiskFileUpload
     */
    public getFiles() {
        // 拼接url
        let _this: any = this;
        const getUrl = '/net-disk/files/' + this.getFolder();
        // 发送get请求
       this.$http.get(getUrl, {
                ownertype: this.getOwnertype(),
                ownerid: this.getOwnerid(),
        }).then((response: any) => {
            if (!response || response.status != 200) {
                this.$throw(_this.$t('components.diskFileUpload.getFileFailure') + '!','getFiles');
                return;
            }
            // 返回的是一个jsonArray
            if (response.data) {
                const files = JSON.parse(JSON.stringify(response.data));
                if (this.uploadFileList.length == 0) {
                    this.uploadFileList.push.apply(this.uploadFileList, files);
                }
            }
        }).catch((error: any) => {
            this.$throw(error,'getFiles');
        });
    }

    /**
     * 自定义上传文件
     *
     * @param 上传文件
     * @memberof DiskFileUpload
     */
    public customUploadFile(param: any) {
        // 上传的文件
        let _this: any = this;
        let file = param.file;
        // formData传参
        let formData = new FormData();
        formData.append('file', file);
        // 拼接url
        const uploadUrl = this.getAction();
        // 发送post请求
        this.$http.post(uploadUrl, formData, {timeout: 2000}).then((response: any) => {
            if (!response || response.status != 200) {
                this.$throw(_this.$t('components.diskFileUpload.loadFailure') + '!','customUploadFile');
            }
            // 返回的是一个jsonobject
            if (response.data) {
                // 新建表单上传，后续需要批量更新操作
                if (this.isCreate == true) {
                    this.isUpdateBatch = true;
                }
                // 保存到文件列表进行显示
                this.uploadFileList.push(response.data);
                // persistence=true时需要持久化表单属性
                if (this.persistence == true && this.uploadFileList.length > 0) {
                    const value = JSON.stringify(this.uploadFileList);
                    this.$emit('formitemvaluechange', {name: this.formItemName, value: value});
                }
            }
        }).catch((error: any) => {
            this.$throw(error,'customUploadFile');
        })
    }

    /**
     * 下载文件
     *
     * @param item 下载文件
     * @memberof DiskFileUpload
     */
    public onDownload(item: any) {
        // 拼接url
        let _this: any = this;
        const id = typeof item.id == "string" ? item.id : JSON.stringify(item.id);
        const name = typeof item.name == "string" ? item.name : JSON.stringify(item.filename);
        const downloadUrl = '/net-disk/download/' + this.getFolder() + '/' + id + '/' + name;
        // 发送get请求
        this.$http.get(downloadUrl, {
            'authcode': item.authcode,
            responseType: 'arraybuffer',
        }).then((response: any) => {
            if (!response || response.status != 200) {
                this.$throw(_this.$t('components.diskFileUpload.downloadFile') + '!','onDownload');
                return;
            }
            // 请求成功，后台返回的是一个文件流
            if (response.data) {
                // 获取文件名
                const disposition = response.headers['content-disposition'];
                const filename = disposition.split('filename=')[1];
                // 用blob对象获取文件流
                let blob = new Blob([response.data], {type: response.headers['content-type']});
                // 通过文件流创建下载链接
                var href = URL.createObjectURL(blob);
                // 创建一个a元素并设置相关属性
                let a = document.createElement('a');
                a.href = href;
                if (name) {
                    a.download = name;
                } else {
                    a.download = filename;
                }
                // 添加a元素到当前网页
                document.body.appendChild(a);
                // 触发a元素的点击事件，实现下载
                a.click();
                // 从当前网页移除a元素
                document.body.removeChild(a);
                // 释放blob对象
                URL.revokeObjectURL(href);
            } else {
                this.$throw(_this.$t('components.diskFileUpload.downloadFile') + '!','onDownload');
            }
        }).catch((error: any) => {
            this.$throw(error,'onDownload');
        });
    }

    /**
     * 预览文件
     *
     * @param item 预览文件
     * @memberof DiskFileUpload
     */
    public onPreview(item: any) {
        // 拼接url
        const id = typeof item.id == "string" ? item.id : JSON.stringify(item.id);
        const name = typeof item.name == "string" ? item.name : JSON.stringify(item.name);
        let previewUrl = '/net-disk/preview/' + this.getFolder() + '/' + id + '/' + name + '?authcode=' + item.authcode;
        this.$http.get(previewUrl).then((response: any) => {
            if (!response || response.status != 200) {
                return;
            }
            // 返回一个url，通过自定义弹框打开
            if (response.data) {
                this.dialogTitle = name;
                this.showDialog = true;
                this.iframeUrl = response.data;
            }
        }).catch((error: any) => {
            this.$throw(error,'onPreview');
        });
    }

    /**
     * 编辑文件
     *
     * @param item
     * @memberof DiskFileUpload
     */
    public onEdit(item: any) {
        // 拼接url
        const id = typeof item.id == "string" ? item.id : JSON.stringify(item.id);
        const name = typeof item.name == "string" ? item.name : JSON.stringify(item.name);
        const editUrl = '/net-disk/editview/' + this.getFolder() + '/' + id + '/' + name + '?authcode=' + item.authcode;
       this.$http.get(editUrl).then((response: any) => {
            if (!response || response.status != 200) {
                return;
            }
            if (response.data) {
                window.open(response.data);
            }
        }).catch((error: any) => {
           this.$throw(error,'onEdit');
        });
    }

    /**
     * ocr识别
     * @param item
     * @memberof DiskFileUpload
     */
    public onOcr(item: any) {
        // 拼接url
        const folder = typeof this.folder == "string" ? this.folder : JSON.stringify(this.folder);
        const id = typeof item.id == "string" ? item.id : JSON.stringify(item.id);
        const name = typeof item.name == "string" ? item.name : JSON.stringify(item.name);
        const ocrUrl = '/net-disk/ocrview/' + this.getFolder() + '/' + id + '/' + name + '?authcode=' + item.authcode;
        this.$http.get(ocrUrl).then((response: any) => {
            if (!response || response.status != 200) {
                return;
            }
            // 返回一个url，通过自定义弹框打开
            if (response.data) {
                this.dialogTitle = name;
                this.showDialog = true;
                this.iframeUrl = response.data;
            }
        }).catch((error: any) => {
            this.$throw(error,'onOcr');
        });
    }

    /**
     * 删除文件
     *
     * @param item
     * @param index
     * @memberof DiskFileUpload
     */
    public onRemove(item: any, index: number) {
        let _this: any = this;
        if (item) {
            MessageBox.confirm(_this.$t('components.diskFileUpload.deleteFile'), _this.$t('components.diskFileUpload.deleteFilePrompt'), {
                confirmButtonText: _this.$t('components.diskFileUpload.true'),
                cancelButtonText: _this.$t('components.diskFileUpload.false'),
                type: 'warning'
            }).then(() => {
                //　拼接url
                const deleteUrl = '/net-disk/files/' + item.id;
                // 发送delete请求
                this.$http.delete(deleteUrl).then((response: any) => {
                    if (!response || response.status != 200) {
                        this.$throw(_this.$t('components.diskFileUpload.deleteFileFailure') + '!','onRemove');
                    }
                    // 从文件列表中删除
                    this.uploadFileList.splice(index, 1);
                    // persistence=true时需要持久化表单属性
                    if (this.persistence == true) {
                        const value = JSON.stringify(this.uploadFileList);
                        this.$emit('formitemvaluechange', {name: this.formItemName, value: value});
                    }
                }).catch((error: any) => {
                    // 提示删除失败
                   this.$throw(error,'onRemove');
                });
            });
        }
    }

    /**
     * 批量更新文件表的ownerid
     *
     * @memberof DiskFileUpload
     */
    public updateFileBatch(files: any) {
        let _this: any = this;
        // 拼接url
        const updateUrl = '/net-disk/files/' + this.getFolder() + '?ownertype=' + this.getOwnertype() + "&ownerid=" + this.getOwnerid();
        // requestBody参数
        let requestBody = [];
        if (files) {
            requestBody = files;
        }
        // 发送post请求
        Axios.post(updateUrl, requestBody, {
            headers: {
                "Content-Type": "application/json;charset=UTF-8",
                ...this.headers,
            },
            timeout: 2000
        }).then((response: any) => {
            if (!response || response.status != 200) {
                this.$throw(_this.$t('components.diskFileUpload.updateFailure') + '!','updateFileBatch');
                return;
            }
        }).catch((error: any) => {
            this.$throw(error,'updateFileBatch');
        });
    }
}
</script>
<style lang="less">
#file-upload {
    width: auto;
    height: auto;
    border: 0px solid black;
}

#el-row {
    border: 0px solid red;
    width: 400px;
}

.withDrag {
    border: 0px solid grey;
    width: 400px;
}

.withoutDrag {
    border: 0px solid grey;
    width: 400px;
    text-align: left;
    padding-left: 0px;
    padding-top: 0px;
    margin-top: 0px;
}

.fileList {
    width: 400px;
    border: 0px solid grey;
    margin-top: 0px;
}

.fileTitle {
    text-align: left;
    margin-left: 0px;
}

.fileTitle i {
    margin-right: 5px;
}

.fileMain {
    text-align: left;
    margin-left: 0px;
    margin-top: -10px;
}

.fileMain .el-link:nth-child(n+2) {
    margin-left: 10px;
}

.dialogDiv {
    // el-dialog头部
    .el-dialog__header {
        height: 40px;
    }

    // el-dialog面板
    .el-dialog__wrapper {
        height: 90vh;
        overflow: visible;
        // el-dialog
        .el-dialog {
            height: 90vh;
        }
    }

    // el-dailog内容
    .el-dialog__body {
        height: inherit;
    }

    #fileIframe {
        height: calc(100% - 40px);
    }
}

</style>