import BaseIo, { IhttpMethods } from '../base/io';
import BaseSupport from "../base/support";
import BaseDefine from "../base/define";

interface IsignParam {
    VERB: string
}

export default class {
    static getHeader(headers, name) {
        return headers[name] || '';
    }
    static authorization(method, resource, sDate, headers) {
        var params = [
            method.toUpperCase(),

            this.getHeader(headers, 'Content-Md5'),
            this.getHeader(headers, 'Content-Type'),
            sDate
        ];

        var ossHeaders = {};
        for (var key in headers) {
            var lkey = key.toLowerCase().trim();
            if (lkey.indexOf('x-oss-') === 0) {
                ossHeaders[lkey] = ossHeaders[lkey] || [];
                ossHeaders[lkey].push(String(headers[key]).trim());
            }
        }

        var ossHeadersList = [];
        Object.keys(ossHeaders).sort().forEach(function (key) {
            ossHeadersList.push(key + ':' + ossHeaders[key].join(','));
        });

        params = params.concat(ossHeadersList);

        var resourceStr = '';
        resourceStr += resource;

        var subresList = [];
        if (subresList.length > 0) {
            resourceStr += '?' + subresList.join('&');
        }
        params.push(resourceStr);
        var stringToSign = params.join('\n');



        var auth = 'OSS ' + BaseDefine.upProjectDefine().ossAccessKeyId + ':';
        return auth + this.signature(stringToSign);
    }

    static signature(stringToSign) {
        return BaseSupport.cryptoHmacBase64(stringToSign, BaseDefine.upProjectDefine().ossAccessKeySecret);
    };

    static uploadBlob(sUrl: string, sLocalPath: string) {
        let sDate = BaseSupport.upGMT(new Date());
        let header = {
            'Authorization': '',
            'Date': sDate,
            'Content-Md5': '',
            'Content-Type': 'image/jpeg'
        };
        let sMethod: IhttpMethods = "PUT";
        let sSign = this.authorization(sMethod, '/' + BaseDefine.upProjectDefine().ossBunkId + '/' + sUrl, sDate, header);
        header.Authorization = sSign;
        return BaseIo.putFile(sMethod, BaseDefine.upProjectDefine().ossServerUrl + '/' + sUrl, header, sLocalPath);
    }


    static upServerUrl(sUrl: string) {
        return BaseDefine.upProjectDefine().ossServerUrl + "/" + sUrl;
    }


}