db/changes/10491-august/00-zipConfig.sql

@@ -0,0 +1,9 @@
+CREATE TABLE `vn`.`zipConfig` (
+  `id` double(10,2) NOT NULL,
+  `maxSize` int(11) DEFAULT NULL COMMENT 'in MegaBytes',
+  PRIMARY KEY (`id`)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb3 COLLATE=utf8mb3_unicode_ci;
+
+INSERT INTO `salix`.`ACL` (`model`, `property`, `accessType`, `permission`, `principalType`, `principalId`)
+    VALUES
+        ('ZipConfig', '*', '*', 'ALLOW', 'ROLE', 'employee');

modules/invoiceOut/back/methods/invoiceOut/downloadZip.js

@@ -0,0 +1,55 @@
+const JSZip = require('jszip');
+const fs = require('fs-extra');
+const UserError = require('vn-loopback/util/user-error');
+
+module.exports = Self => {
+    Self.remoteMethodCtx('downloadZip', {
+        description: 'Download a zip file with multiple invoices pdfs',
+        accessType: 'READ',
+        accepts: [
+            {
+                arg: 'ids',
+                type: ['number'],
+                description: 'The invoice ids'
+            }
+        ],
+        returns: {
+            arg: 'base64',
+            type: 'string',
+            root: true
+        },
+        http: {
+            path: '/downloadZip',
+            verb: 'POST'
+        }
+    });
+
+    Self.downloadZip = async function(ctx, ids, options) {
+        const models = Self.app.models;
+        const myOptions = {};
+
+        if (typeof options == 'object')
+            Object.assign(myOptions, options);
+
+        const zip = new JSZip();
+        let totalSize = 0;
+        const zipConfig = await models.ZipConfig.findOne(null, myOptions);
+        for (let id of ids) {
+            if (zipConfig && totalSize > zipConfig.maxSize) throw new UserError('Files are too large');
+            const invoiceOutPdf = await models.InvoiceOut.download(ctx, id, myOptions);
+            const fileName = extractFileName(invoiceOutPdf[2]);
+            const body = invoiceOutPdf[0];
+            const sizeInBytes = (await fs.promises.stat(body.path)).size;
+            const sizeInMegabytes = sizeInBytes / (1024 * 1024);
+            totalSize += sizeInMegabytes;
+            zip.file(fileName, body);
+        }
+        const base64 = await zip.generateAsync({type: 'base64'});
+        return base64;
+    };
+
+    function extractFileName(str) {
+        const matches = str.match(/"(.*?)"/);
+        return matches ? matches[1] : str;
+    }
+};

modules/invoiceOut/back/methods/invoiceOut/specs/downloadZip.spec.js

@@ -0,0 +1,53 @@
+const models = require('vn-loopback/server/server').models;
+const UserError = require('vn-loopback/util/user-error');
+
+describe('InvoiceOut downloadZip()', () => {
+    const userId = 9;
+    const invoiceIds = [1, 2];
+    const ctx = {
+        req: {
+
+            accessToken: {userId: userId},
+            headers: {origin: 'http://localhost:5000'},
+        }
+    };
+
+    it('should return part of link to dowloand the zip', async() => {
+        const tx = await models.Order.beginTransaction({});
+
+        try {
+            const options = {transaction: tx};
+
+            const result = await models.InvoiceOut.downloadZip(ctx, invoiceIds, options);
+
+            expect(result).toBeDefined();
+
+            await tx.rollback();
+        } catch (e) {
+            await tx.rollback();
+            throw e;
+        }
+    });
+
+    it('should return an error if the size of the files is too large', async() => {
+        const tx = await models.Order.beginTransaction({});
+
+        let error;
+        try {
+            const options = {transaction: tx};
+            const zipConfig = {
+                maxSize: 0
+            };
+            await models.ZipConfig.create(zipConfig, options);
+
+            await models.InvoiceOut.downloadZip(ctx, invoiceIds, options);
+
+            await tx.rollback();
+        } catch (e) {
+            await tx.rollback();
+            error = e;
+        }
+
+        expect(error).toEqual(new UserError(`Files are too large`));
+    });
+});

modules/invoiceOut/back/model-config.json

@@ -22,5 +22,8 @@
     },
     "TaxType": {
         "dataSource": "vn"
+    },
+    "ZipConfig": {
+        "dataSource": "vn"
     }
 }

modules/invoiceOut/back/models/invoice-out.js

@@ -3,6 +3,7 @@ module.exports = Self => {
     require('../methods/invoiceOut/summary')(Self);
     require('../methods/invoiceOut/getTickets')(Self);
     require('../methods/invoiceOut/download')(Self);
+    require('../methods/invoiceOut/downloadZip')(Self);
     require('../methods/invoiceOut/delete')(Self);
     require('../methods/invoiceOut/book')(Self);
     require('../methods/invoiceOut/createPdf')(Self);

modules/invoiceOut/back/models/zip-config.json

@@ -0,0 +1,25 @@
+{
+    "name": "ZipConfig",
+    "base": "VnModel",
+    "options": {
+        "mysql": {
+          "table": "zipConfig"
+        }
+    },
+    "properties": {
+        "id": {
+            "type": "number",
+            "id": true,
+            "description": "Identifier"
+        },
+        "maxSize": {
+            "type": "number"
+        }
+    },
+    "acls": [{
+        "accessType": "READ",
+        "principalType": "ROLE",
+        "principalId": "$everyone",
+        "permission": "ALLOW"
+    }]
+}

modules/invoiceOut/front/index/index.html

@@ -4,10 +4,24 @@
 <vn-data-viewer
     model="model"
     class="vn-w-lg">
+    <vn-card class="vn-pa-lg">
+        <vn-button
+            disabled="$ctrl.totalChecked == 0"
+            vn-click-stop="$ctrl.openPdf()"
+            icon="cloud_download"
+            title="Download PDF"
+            vn-tooltip="Download PDF">
+        </vn-button>
+    </vn-card>
     <vn-card>
     <vn-table model="model">
         <vn-thead>
             <vn-tr>
+                <vn-th shrink>
+                    <vn-multi-check 
+                        model="model">
+                    </vn-multi-check>
+                </vn-th>
                 <vn-th field="ref">Reference</vn-th>
                 <vn-th field="issued" expand>Issued</vn-th>
                 <vn-th field="amount" number>Amount</vn-th>
@@ -23,6 +37,12 @@
             <a ng-repeat="invoiceOut in model.data"
                 class="clickable vn-tr search-result"
                 ui-sref="invoiceOut.card.summary({id: {{::invoiceOut.id}}})">
+                <vn-td>
+                    <vn-check 
+                        ng-model="invoiceOut.checked"
+                        vn-click-stop>
+                    </vn-check>
+                </vn-td>
                 <vn-td>{{::invoiceOut.ref | dashIfEmpty}}</vn-td>
                 <vn-td shrink>{{::invoiceOut.issued | date:'dd/MM/yyyy' | dashIfEmpty}}</vn-td>
                 <vn-td number>{{::invoiceOut.amount | currency: 'EUR': 2 | dashIfEmpty}}</vn-td>
@@ -36,15 +56,6 @@
                 <vn-td expand>{{::invoiceOut.created | date:'dd/MM/yyyy' | dashIfEmpty}}</vn-td>
                 <vn-td>{{::invoiceOut.companyCode | dashIfEmpty}}</vn-td>
                 <vn-td shrink>{{::invoiceOut.dued | date:'dd/MM/yyyy' | dashIfEmpty}}</vn-td>
-                <vn-td shrink>
-                    <vn-icon-button
-                        ng-show="invoiceOut.hasPdf"
-                        vn-click-stop="$ctrl.openPdf(invoiceOut.id)"
-                        icon="cloud_download"
-                        title="Download PDF"
-                        vn-tooltip="Download PDF">
-                    </vn-icon-button>
-                </vn-td>
                 <vn-td shrink>
                     <vn-icon-button
                         vn-click-stop="$ctrl.preview(invoiceOut)"

modules/invoiceOut/front/index/index.js

@@ -2,14 +2,41 @@ import ngModule from '../module';
 import Section from 'salix/components/section';
 
 export default class Controller extends Section {
+    get checked() {
+        const rows = this.$.model.data || [];
+        const checkedRows = [];
+        for (let row of rows) {
+            if (row.checked)
+                checkedRows.push(row.id);
+        }
+
+        return checkedRows;
+    }
+
+    get totalChecked() {
+        return this.checked.length;
+    }
+
     preview(invoiceOut) {
         this.selectedInvoiceOut = invoiceOut;
         this.$.summary.show();
     }
 
-    openPdf(id) {
-        let url = `api/InvoiceOuts/${id}/download?access_token=${this.vnToken.token}`;
+    openPdf() {
+        if (this.checked.length <= 1) {
+            const [invoiceOutId] = this.checked;
+            const url = `api/InvoiceOuts/${invoiceOutId}/download?access_token=${this.vnToken.token}`;
             window.open(url, '_blank');
+        } else {
+            const invoiceOutIds = this.checked;
+            const params = {
+                ids: invoiceOutIds
+            };
+            this.$http.post(`InvoiceOuts/downloadZip`, params)
+                .then(res => {
+                    location.href = 'data:application/zip;base64,' + res.data;
+                });
+        }
     }
 }
 

modules/invoiceOut/front/index/locale/es.yml

@@ -6,3 +6,4 @@ Minimum: Minimo
 Maximum: Máximo
 Global invoicing: Facturación global
 Manual invoicing: Facturación manual
+Files are too large: Los archivos son demasiado grandes