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