HackMD/lib/web/imageRouter.js

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'use strict'
var fs = require('fs')
var url = require('url')
var path = require('path')
const Router = require('express').Router
const formidable = require('formidable')
var imgur = require('imgur')
const config = require('../config')
const logger = require('../logger')
const response = require('../response')
const imageRouter = module.exports = Router()
// upload image
imageRouter.post('/uploadimage', function (req, res) {
var form = new formidable.IncomingForm()
form.keepExtensions = true
if (config.imageUploadType === 'filesystem') {
form.uploadDir = 'public/uploads'
}
form.parse(req, function (err, fields, files) {
if (err || !files.image || !files.image.path) {
response.errorForbidden(res)
} else {
if (config.debug) { logger.info('SERVER received uploadimage: ' + JSON.stringify(files.image)) }
try {
switch (config.imageUploadType) {
case 'filesystem':
res.send({
link: url.resolve(config.serverurl + '/', files.image.path.match(/^public\/(.+$)/)[1])
})
break
case 's3':
var AWS = require('aws-sdk')
var awsConfig = new AWS.Config(config.s3)
var s3 = new AWS.S3(awsConfig)
const {getImageMimeType} = require('../utils')
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fs.readFile(files.image.path, function (err, buffer) {
if (err) {
logger.error(err)
res.status(500).end('upload image error')
return
}
var params = {
Bucket: config.s3bucket,
Key: path.join('uploads', path.basename(files.image.path)),
Body: buffer
}
var mimeType = getImageMimeType(files.image.path)
if (mimeType) { params.ContentType = mimeType }
s3.putObject(params, function (err, data) {
if (err) {
logger.error(err)
res.status(500).end('upload image error')
return
}
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var s3Endpoint = 's3.amazonaws.com'
if (config.s3.region && config.s3.region !== 'us-east-1') { s3Endpoint = `s3-${config.s3.region}.amazonaws.com` }
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res.send({
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link: `https://${s3Endpoint}/${config.s3bucket}/${params.Key}`
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})
})
})
break
case 'imgur':
default:
imgur.setClientId(config.imgur.clientID)
imgur.uploadFile(files.image.path)
.then(function (json) {
if (config.debug) { logger.info('SERVER uploadimage success: ' + JSON.stringify(json)) }
res.send({
link: json.data.link.replace(/^http:\/\//i, 'https://')
})
})
.catch(function (err) {
logger.error(err)
return res.status(500).end('upload image error')
})
break
}
} catch (err) {
logger.error(err)
return res.status(500).end('upload image error')
}
}
})
})