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var fs = require('fs')
var knox = require('knox')
var uuid = require('node-uuid')
var crypto = require('crypto')
var s3
var acceptableuploadTypes = {
'image/gif': 'gif',
'image/jpeg': 'jpg',
'image/jpg': 'jpg',
'image/png': 'png',
'application/pdf': 'pdf',
}
module.exports = {}
module.exports.init = function (opt){
if (opt.local) {
s3 = { local: opt.local }
} else {
s3 = knox.createClient({
key: opt.key,
secret: opt.secret,
bucket: opt.bucket,
})
}
}
module.exports.put = function (opt) {
var filename
var err
var now = new Date()
var file = opt.file
// console.log("Received", file.originalname, file.mimetype)
var types = opt.types || acceptableuploadTypes
var extension = types[file.mimetype]
if (opt.filename) {
filename = opt.filename
}
else if (opt.preserveFilename) {
filename = file.originalname
}
else {
filename = uuid.v1() + "." + extension;
}
var remote_path = "/" + opt.dirname + "/" + filename
if (! extension) {
err = "Unacceptable filetype."
}
else if (opt.maxSize && file.size > opt.maxSize) {
err = "File too large. Uploads can be a maximum of " + opt.maxSize + " bytes."
}
if (err) {
console.error(">>>", err)
opt.unacceptable && opt.unacceptable(err)
return
}
opt.acceptable && opt.acceptable(err)
// console.log("upload >", remote_path)
if (s3.local) {
var hash = crypto.createHash("sha256").update(filename, "utf8").digest("hex")
var hash_path = hash.substr(0, 2)
fs.mkdir(s3.local.localPath + hash_path, function(error){
if (error && error.code !== "EEXIST") {
console.error("error creating directory")
console.error(error)
opt.unacceptable && opt.unacceptable(error)
return
}
var localPath = (s3.local.localPath + hash_path + "/" + filename).replace(/\/\//g, "/")
var remotePath = (s3.local.remotePath + hash_path + "/" + filename).replace(/\/\//g, "/")
fs.writeFile(localPath, file.buffer, {}, function(error){
if (error) {
console.error("error saving file")
console.error(error)
opt.unacceptable && opt.unacceptable(error)
return
}
opt.success && opt.success(remotePath)
});
})
} else {
s3.putBuffer(file.buffer, remote_path, {
'Content-Length': file.size,
'Content-Type': file.mimetype,
'x-amz-acl': 'public-read'
}, function(err, s3res) {
if (err || s3res.statusCode !== 200) {
console.error(err);
if (s3res && s3res.resume) {
s3res.resume()
}
return;
}
var file_url = s3res.url || s3res.req.url
opt.success && opt.success(file_url)
}).on('error', function(err, s3res){
console.error(err)
s3res && s3res.resume && s3res.resume()
})
}
}
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