<template>
    <div class="table-info-vue">
        <el-card style="margin: 10px;">
            <div slot="header" class="clearfix">
                表信息
                <span style="float: right;margin-top: -5px;">
                    <el-button class="search-submit" size="small" type="primary" icon="el-icon-search" @click="previewTableData">表数据预览</el-button>
                </span>
            </div>
            <el-row class="status-info-row">
                <el-col :span="24"><span class="label">数据源：</span>{{vueQueryParam.host}}</el-col>
            </el-row>
            <el-row class="status-info-row">
                <el-col :span="6"><span class="label">数据库：</span>{{vueQueryParam.dbName}}</el-col>
                <el-col :span="6"><span class="label">数据表：</span>{{tableStatusInfo.name}}</el-col>
                <el-col :span="6"><span class="label">引擎：</span>{{tableStatusInfo.engine}}</el-col>
            </el-row>
            <el-row class="status-info-row">
                <el-col :span="6"><span class="label">行数：</span>{{tableStatusInfo.rows||0}}</el-col>
                <el-col :span="6"><span class="label">自动递增：</span>{{tableStatusInfo.avgRowLength||0}}</el-col>
                <el-col :span="6"><span class="label">行格式：</span>{{tableStatusInfo.rowFormat}}</el-col>
                <el-col :span="6"><span class="label">排序规则：</span>{{tableStatusInfo.collation}}</el-col>
            </el-row>
            <el-row class="status-info-row">
                <el-col :span="6"><span class="label">索引长度：</span>{{getBytesSize(tableStatusInfo.indexLength)}}</el-col>
                <el-col :span="6"><span class="label">数据长度：</span>{{getBytesSize(tableStatusInfo.dataLength)}}</el-col>
                <el-col :span="6"><span class="label">最大长度：</span>{{getBytesSize(tableStatusInfo.maxDataLength)}}</el-col>
                <el-col :span="6"><span class="label">可用空间：</span>{{getBytesSize(tableStatusInfo.dataFree)}}</el-col>
            </el-row>
            <el-row class="status-info-row">
                <el-col :span="6"><span class="label">创建时间：</span>{{tableStatusInfo.createTime}}</el-col>
                <el-col :span="6"><span class="label">修改时间：</span>{{tableStatusInfo.updateTime}}</el-col>
                <el-col :span="6"><span class="label">检查时间：</span>{{tableStatusInfo.checkTime}}</el-col>
                <el-col :span="6"><span class="label">创建选项：</span>{{tableStatusInfo.createOptions}}</el-col>
            </el-row>
            <el-row class="status-info-row">
                <el-col :span="24">
                    <span class="label">表注释：</span>
                    <span v-if="tableInfo.inEdit == 1">
                        <el-input v-model="tableInfo.newDesc" placeholder="输入表注释" @keyup.enter="saveTableDescription" v-on:blur="saveTableDescription" style="width: 500px;"></el-input>
                    </span>
                    <span v-else>{{tableInfo.description || '暂无注释'}} <i class="el-icon-edit edit-table-desc" v-on:click="tableInfo.inEdit = 1"></i></span>
                </el-col>
            </el-row>
        </el-card>
        <el-card style="margin: 10px;">
            <div slot="header" class="clearfix">
                字段信息
                <el-tooltip effect="dark" content="点击注释列可编辑字段注释" placement="top">
                    <i class="el-icon-info" style="color: #999;"></i>
                </el-tooltip>
                <span style="float: right;margin-top: -5px;">
                    <el-button size="small" @click="showCreateTableDdl">DDL</el-button>
                </span>
            </div>
            <div style="padding: 10px;" v-loading="columnListLoading">
                <el-table :data="columnList" stripe border style="width: 100%; margin-bottom: 5px;">
                    <el-table-column prop="name" label="字段名" width="200"></el-table-column>
                    <el-table-column label="自增" width="50">
                        <template slot-scope="scope">{{scope.row.isidentity ? '是' : '否'}}</template>
                    </el-table-column>
                    <el-table-column prop="type" label="类型" width="150"></el-table-column>
                    <el-table-column prop="length" label="长度" width="80"></el-table-column>
                    <el-table-column prop="nullable" label="空值" width="80"></el-table-column>
                    <el-table-column label="主键" width="50">
                        <template slot-scope="scope">{{scope.row.ispramary ? '是' : '否'}}</template>
                    </el-table-column>
                    <el-table-column label="注释">
                        <template slot-scope="scope">
                            <div v-if="scope.row.inEdit == 1">
                                <el-input v-model="scope.row.newDesc" placeholder="输入字段注释" @keyup.enter="saveColumnDescription(scope.row)" v-on:blur="saveColumnDescription(scope.row)"></el-input>
                            </div>
                            <div v-else class="description" v-on:click="descBoxClick(scope.row)">{{scope.row.description}}</div>
                        </template>
                    </el-table-column>
                </el-table>
            </div>
        </el-card>
        <!--增加数据源弹窗-->
        <el-dialog :visible.sync="tableDDLInfoDialogVisible" :footer="null" width="760px">
			<div slot="title">
				<span style="margin-right: 15px;">DDL</span>
				<el-button size="small" icon="el-icon-document-copy" v-clipboard:copy="tableDDLInfo" v-clipboard:success="onCopySuccess" v-clipboard:error="onCopyError">复制</el-button>
			</div>
            <div v-highlight>
                <pre><code v-html="tableDDLInfo"></code></pre>
            </div>
        </el-dialog>
    </div>
</template>

<script>
    import datasourceApi from '../../common/api/datasource'

    export default {
        data() {
            return {
                columnListLoading: false,
                vueQueryParam: {},
                tableStatusInfo: {},
                columnList: [],
                tableInfo: {},
                nowExecutorId: 1,
                tableDDLInfo: '',
                tableDDLInfoDialogVisible: false,
            };
        },
		mounted: function () {
			// 延迟设置展开的目录，edit比app先初始化
			setTimeout(() => {
				this.$emit('initLoadDataList', {
					sourceId: this.vueQueryParam.sourceId,
					host: this.vueQueryParam.host,
					dbName: this.vueQueryParam.dbName
				});
			}, 500);
		},
		activated: function () {
			this.initQueryParam(this.$route);
		},
        methods: {
            initQueryParam(to) {
                if (this.columnListLoading) {
                    return;
                }
                this.columnListLoading = true;
                this.vueQueryParam = to.query;
                datasourceApi.tableColumnList(this.vueQueryParam).then(json => {
                    let columnList = json.data.columnList || [];
                    for (let i = 0; i < columnList.length; i++) {
                        columnList[i].inEdit = 0;
                        columnList[i].newDesc = columnList[i].description;
                    }
                    this.columnList = columnList;
                    let tableInfo = json.data.tableInfo || {};
                    tableInfo.inEdit = 0;
                    tableInfo.newDesc = tableInfo.description;
                    this.tableInfo = tableInfo;
                    let newName = {key: this.$route.fullPath, val: '表-' + tableInfo.tableName};
                    this.$store.commit('global/addTableName', newName);
                    this.columnListLoading = false;
                });
                datasourceApi.tableStatus(this.vueQueryParam).then(json => {
                    this.tableStatusInfo = json.data || {};
                });
            },
			onCopySuccess(e) {
				this.$message.success("内容已复制到剪切板！");
			},
			onCopyError(e) {
				this.$message.error("抱歉，复制失败！");
			},
            showCreateTableDdl() {
                this.tableDDLInfo = '';
                let param = {
                    sourceId: this.vueQueryParam.sourceId,
                    dbName: this.vueQueryParam.dbName,
                    tableName: this.vueQueryParam.tableName,
                };
				let loading = this.$loading({
					lock: true,
					text: '加载中...',
					spinner: 'el-icon-loading',
					background: 'rgba(0, 0, 0, 0.7)'
				});
				this.tableDDLInfoDialogVisible = false;
				datasourceApi.queryTableDdl(param).then(res => {
					loading.close();
					this.tableDDLInfo = res.data || '获取失败';
					setTimeout(() => this.tableDDLInfoDialogVisible = true, 0);
				}).catch(() => {
					loading.close();
				});
            },
            descBoxClick(row) {
                // row.newDesc = row.description;
                row.inEdit = 1;
            },
            previewTableData() {
                let previewParam = {
                    sourceId: this.vueQueryParam.sourceId,
                    dbName: this.vueQueryParam.dbName,
                    tableName: this.vueQueryParam.tableName,
                    host: this.vueQueryParam.host,
                    dbType: this.tableStatusInfo.dbType,
                };
                this.$router.push({path: '/data/dataPreview', query: previewParam});
            },
            getBytesSize(size) {
                if (!size) return "0 bytes";
                var num = 1024.00;
                if (size < num) return size + " bytes";
                if (size < Math.pow(num, 2)) return (size / num).toFixed(2) + "KB";
                if (size < Math.pow(num, 3)) return (size / Math.pow(num, 2)).toFixed(2) + "MB";
                if (size < Math.pow(num, 4)) return (size / Math.pow(num, 3)).toFixed(2) + "GB";
                return (size / Math.pow(num, 4)).toFixed(2) + "TB";
            },
            saveColumnDescription(row) {
                if (row.inEdit == 0 || row.description == row.newDesc) {
                    row.inEdit = 0;
                    return;
                }
                row.inEdit = 0;
                this.vueQueryParam.columnName = row.name;
                this.vueQueryParam.newDesc = row.newDesc;
                datasourceApi.updateTableColumnDesc(this.vueQueryParam).then(() => {
                    row.description = row.newDesc;
                    this.$message.success("修改成功");
                });
            },
            saveTableDescription() {
                if (this.tableInfo.inEdit == 0 || this.tableInfo.description == this.tableInfo.newDesc) {
                    this.tableInfo.inEdit = 0;
                    return;
                }
                this.tableInfo.inEdit = 0;
                this.vueQueryParam.newDesc = this.tableInfo.newDesc;
                datasourceApi.updateTableDesc(this.vueQueryParam).then(() => {
                    this.tableInfo.description = this.tableInfo.newDesc;
                    this.$message.success("修改成功");
                });
            },
        }
    }
</script>
<style>
    .table-info-vue .el-dialog__body{padding: 0 20px 10px;}
    .table-info-vue .el-form-item{margin-bottom: 5px;}
    .table-info-vue .edit-table-desc{cursor: pointer; color: #409EFF;}
    .table-info-vue .description{cursor: pointer;min-height: 23px;}
    .table-info-vue .el-table td, .table-info-vue .el-table th{padding: 5px 0;}
    .table-info-vue .status-info-row{padding: 8px 0;}
    .table-info-vue .status-info-row .label{width: 80px;display: inline-block;text-align: right;color: #606266;}
</style>

