app.use(serve(__dirname + '/public/'));

// 写入目录
const mkdirsSync = (dirname) => {
if (fs.existsSync(dirname)) {
return true
} else {
if (mkdiRSSync(path.dirname(dirname))) {
fs.mkdirSync(dirname)
return true
}
}
return false
}

function getSuffix (fileName) {
return fileName.split('.').pop()
}

// 重命名
function Rename (fileName) {
return Math.random().toString(16).substr(2) + '.' + getSuffix(fileName)
}
// 删除文件
function removeTemImage (path) {
fs.unlink(path,(err) => {
if (err) {
throw err
}
})
}
// 上传到七牛
function upToQiniu (filePath,key) {
const accessKey = qiniuConfig.accessKey // 你的七牛的accessKey
const secretKey = qiniuConfig.secretKey // 你的七牛的secretKey
const mac = new qiniu.auth.digest.Mac(accessKey,secretKey)

const options = {
scope: qiniuConfig.scope // 你的七牛存储对象
}
const putPolicy = new qiniu.rs.PutPolicy(options)
const uploadToken = putPolicy.uploadToken(mac)

const config = new qiniu.conf.Config()
// 空间对应的机房
config.zone = qiniu.zone.Zone_z2
const localFile = filePath
const formUploader = new qiniu.form_up.FormUploader(config)
const putExtra = new qiniu.form_up.PutExtra()
// 文件上传
return new Promise((resolved,reject) => {
formUploader.putFile(uploadToken,key,localFile,putExtra,function (respErr,respBody,respInfo) {
if (respErr) {
reject(respErr)
}
if (respInfo.statusCode == 200) {
resolved(respBody)
} else {
resolved(respBody)
}
})
})

}

// 上传到本地服务器
function uploadFile (ctx,options) {
const _emmiter = new Busboy({headers: ctx.req.headers})
const fileType = options.fileType
const filePath = path.join(options.path,fileType)
const confirm = mkdiRSSync(filePath)
if (!confirm) {
return
}
console.log('start uploading...')
return new Promise((resolve,reject) => {
_emmiter.on('file',function (fieldname,file,filename,encoding,mimetype) {
const fileName = Rename(filename)
const saveTo = path.join(path.join(filePath,fileName))
file.pipe(fs.createWriteStream(saveTo))
file.on('end',function () {
resolve({
imgPath: /${fileType}/${fileName},imgKey: fileName
})
})
})

_emmiter.on('finish',function () {
console.log('finished...')
})

_emmiter.on('error',function (err) {
console.log('err...')
reject(err)
})

ctx.req.pipe(_emmiter)
})
}

app.use(route.post('/upload',async function(ctx,next) {

const serverPath = path.join(__dirname,'./uploads/')
// 获取上存图片
const result = await uploadFile(ctx,{
fileType: 'album',path: serverPath
})
const imgPath = path.join(serverPath,result.imgPath)
// 上传到七牛
const qiniu = await upToQiniu(imgPath,result.imgKey)
// 上存到七牛之后 删除原来的缓存图片
removeTemImage(imgPath)
ctx.body = {
imgUrl: http://xxxxx(你的<a href="/tag/wailian/" target="_blank" class="keywords">外链</a>或者解析后<a href="/tag/qiniu/" target="_blank" class="keywords">七牛</a>的路径)/${qiniu.key}
}
}));

app.listen(3001);

console.log('listening on port 3001');