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var async = require('async');

var Common = require('common');

var needle = require('needle');

var fs = require('fs');

var Evt = require('evt_main');

function log(o) {

// console.log(o);

}

// timeout 0无限等待, 60,000 1分钟

needle.defaults({

timeout: 60000

});

// 远程数据服务

var Api = {

// 检查错误

checkError: function(error, resp) {

var me = this;

},

getUrl: function(url, param) {

var url = Evt.leanoteUrl + '/api/' + url;

var token = Evt.getToken();

param = param || {};

param.token = token;

if(param) {

var paramStr = '';

for(var i in param) {

paramStr += i + '=' + param[i] + '&';

}

}

if(url.indexOf('?') >= 0) {

url = url + '&' + paramStr;

}

url = url + '?' + paramStr;

return url;

},

getImage: function(fileId, callback) {

var me = this;

var url = me.getUrl('file/getImage', {fileId: fileId});

// console.log('getImage');

// console.log(url);

needle.get(url, function(err, resp) {

me.checkError(err, resp);

if(err) {

return callback && callback(false);

}

else if (resp.statusCode != 200) {

console.log(fileId + ' 图片返回状态错误: ' + resp.statusCode + ' ' + url);

return callback && callback(false);

}

// log(resp);

/*

{ 'accept-ranges': 'bytes',

'content-disposition': 'inline; filename="logo.png"',

'content-length': '8583',

'content-type': 'image/png',

date: 'Mon, 19 Jan 2015 15:01:47 GMT',

*/

// log(resp.headers);

else {

var typeStr = ('' + resp.headers['content-type']).toLowerCase();

if (typeStr.indexOf('image') < 0) {

console.log(fileId + ' 不是图片 ' + typeStr + ' ' + url);

return callback && callback(false);

}

var type = 'png';

if(typeStr) {

var typeArr = typeStr.split('/');

if(typeStr.length > 1) {

type = typeArr[1];

}

}

var filename = Common.uuid() + '.' + type;

var imagePath = Evt.getCurUserImagesPath();

var imagePathAll = imagePath + '/' + filename;

fs.writeFile(imagePathAll, resp.body, function(err) {

if(err) {

log(err);

log('local save image failed 本地保存失败');

callback(false);

} else {

console.log('main save image success');

callback(imagePathAll, filename);

}

});

}

});

},

};

module.exports = Api;