90 lines
2.7 KiB
JavaScript
90 lines
2.7 KiB
JavaScript
const UserError = require('vn-loopback/util/user-error');
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const fs = require('fs-extra');
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const path = require('path');
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module.exports = Self => {
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Self.remoteMethodCtx('download', {
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description: 'Get the user image',
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accessType: 'READ',
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accepts: [
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{
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arg: 'collection',
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type: 'String',
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description: 'The image collection',
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http: {source: 'path'}
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},
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{
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arg: 'size',
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type: 'String',
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description: 'The image size',
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http: {source: 'path'}
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},
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{
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arg: 'id',
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type: 'Number',
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description: 'The user 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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{
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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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{
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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: `/:collection/:size/:id/download`,
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verb: 'GET'
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}
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});
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Self.download = async function(ctx, collection, size, id) {
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const models = Self.app.models;
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const filter = {where: {name: collection}};
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const imageCollection = await models.ImageCollection.findOne(filter);
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const entity = await models[imageCollection.model].findById(id, {
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fields: ['id', imageCollection.property]
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});
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if (!entity) return false;
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const image = await models.Image.findOne({where: {
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collectionFk: collection,
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name: entity[imageCollection.property]}
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});
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if (!image) return false;
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const hasReadRole = models.ImageCollection.hasReadRole(ctx, collection);
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if (!hasReadRole)
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throw new UserError(`You don't have enough privileges`);
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const container = await models.ImageContainer.getContainer(collection);
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const rootPath = container.client.root;
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const fileSrc = path.join(rootPath, collection, size);
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const file = {
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path: `${fileSrc}/${image.name}.png`,
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contentType: 'image/png',
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name: `${image.name}.png`
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};
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if (!fs.existsSync(file.path)) return [];
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await fs.access(file.path);
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const stream = fs.createReadStream(file.path);
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return [stream, file.contentType, `filename="${file.name}"`];
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};
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};
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