63 lines
1.8 KiB
JavaScript
63 lines
1.8 KiB
JavaScript
const UserError = require('vn-loopback/util/user-error');
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module.exports = Self => {
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Self.remoteMethodCtx('downloadFile', {
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description: 'Download a document',
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accessType: 'READ',
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accepts: [
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{
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arg: 'id',
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type: 'Number',
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description: 'The document id',
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http: {source: 'path'}
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}
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],
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returns: [
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{
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arg: 'body',
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type: 'file',
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root: true
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}, {
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arg: 'Content-Type',
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type: 'String',
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http: {target: 'header'}
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}, {
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arg: 'Content-Disposition',
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type: 'String',
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http: {target: 'header'}
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}
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],
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http: {
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path: `/:id/downloadFile`,
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verb: 'GET'
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}
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});
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Self.downloadFile = async function(ctx, id) {
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const storageConnector = Self.app.dataSources.storage.connector;
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const models = Self.app.models;
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const dms = await Self.findById(id);
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const hasReadRole = await models.DmsType.hasReadRole(ctx, dms.dmsTypeFk);
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if (!hasReadRole)
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throw new UserError(`You don't have enough privileges`);
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const pathHash = storageConnector.getPathHash(dms.id);
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try {
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await models.Container.getFile(pathHash, dms.file);
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} catch (e) {
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if (e.code != 'ENOENT')
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throw e;
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const error = new UserError(`File doesn't exists`);
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error.statusCode = 404;
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throw error;
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}
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const stream = models.Container.downloadStream(pathHash, dms.file);
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return [stream, dms.contentType, `filename="${dms.file}"`];
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};
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};
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