leancloud node service formhelper

leancloud node service formhelper

require! \debug
require! \fs
require! \multiparty
_ = require \lodash
{isArray} = require \util

AV = require \leanengine


log = debug "carlive:formHelper"

#上传文件
saveFile = (file)->
    _p = new AV.Promise!
    log "file : #{JSON.stringify file}"
    fs.readFile file.path,(err,data)->
        if err
            error "saveFile : #{JSON.stringify err}"
            _p.reject err 
        else
            base64Data = data.toString 'base64'
            theFile = new AV.File file.originalFilename,{base64:base64Data}
            # log "savetoFile : #{base64Data}"
            theFile.save!.then ->
                log "savetoFile : #{JSON.stringify &}"
                data = {}
                key = file.fieldName        
                data[key] = {"__type":"Pointer","className":"_File","objectId":&0.id}
                _p.resolve data
                # promise.resolve.apply promise,&
            ,->
                error "savetoFile : #{JSON.stringify &}"
                _p.reject &
                # promise.reject.apply promise,& 
    _p

#表单处理
exports.FormParse = (req)->
    form = new multiparty.Form! 
    # form.on 'part', (part) ->
    #     log "multipart On part : #{part.filename}"

    getFileName = (headerString)->
        _str = headerString.split ';'
        for str in _str
            log "getfileName #{str}"

    _p = new AV.Promise!    
    body = req.body 
    form.parse req, (err, fields, files)->
        _fields = {}

        for k,v of body
            _fields[k] = v

        for key,value of fields
            _fields[key] = if value.length===1
                           then value[0] 
                           else value        
        promises = []
        for k,v of files        

            if isArray v
                for _file in v
                    disposition = _file.headers["content-disposition"]
                    getFileName disposition
                    log "content-disposition : #{disposition}"
                    # log "Ready for Upload! file : #{JSON.stringify _file}" 
                    if _file.size                        
                        promises.push saveFile _file
            else
                if v.size
                    disposition = _file.headers["content-disposition"]
                    getFileName disposition
                    log "content-disposition : #{disposition}"
                    # log "Ready for Upload! file : #{JSON.stringify v}" 
                    # p = new AV.Promise!
                    # saveFile p,_file
                    promises.push saveFile v
        log "promises : #{promises.length}"
        AV.Promise.when promises
            .then ->                
                flatten =[]
                for k,v of &
                    console.log "#k"
                    flatten.push v
                log "FormParse : #{JSON.stringify flatten}" 
                _merge = {}

                if flatten.length === 1
                    _merge = flatten[0] 
                else
                    for item in flatten
                        for k,v of item
                            console.log "item : #{k}"
                            _merge[k] = [] if !_merge[k]
                            _merge[k].push v

                formData = _.merge _fields,_merge         
                log "FormData : #{JSON.stringify formData,'','\t'}"
                _p.resolve formData,fields
            ,->
                _p.reject &
    _p