标准化事件及应用归因签名

adTechId+ '\u2063' + campaignId+ '\u2063'  + destinationId+ '\u2063' + serviceTag+ '\u2063' + mmpIdStr + '\u2063' + nonce + '\u2063' + timestamp

mmpIdStr = mmpId1 + '\u2063' + mmpId2

import { hilog } from '@kit.PerformanceAnalysisKit';
import { BusinessError } from '@kit.BasicServicesKit';
// 具体引用方法参考本示例代码底部说明
import { AegRsaSign } from '@hw-agconnect/petal-aegis';

const TAG: string = 'SignUtil';
const SEPARATOR: string = '\u2063';

export class SignUtil {
    public static genSignContent(adTechId: string, campaignId: string, destinationId: string, mmpIds: string[],
        serviceTag: string, nonce: string, timestamp: number) {
        let content = SignUtil.addSeparator(adTechId) +
            SignUtil.addSeparator(campaignId) +
            SignUtil.addSeparator(destinationId) +
            SignUtil.addSeparator(serviceTag) +
            SignUtil.genMmpIds(mmpIds) +
            SignUtil.addSeparator(nonce) +
            timestamp;
        hilog.info(0, TAG, `content = ${JSON.stringify(content)}`);
        return content;
    }

    private static addSeparator(value: string | undefined): string {
        return value ? value + SEPARATOR : '';
    }

    private static genMmpIds(mmpIds: string[]) {
        let result: string = '';
        for (let mmpId of mmpIds) {
            if (mmpId) {
                result += SignUtil.addSeparator(mmpId);
            }
        }
        return result;
    }

    public static getSign(context: UIContext, content: string, privateKey: string): Promise<string> {
        return new Promise<string>((resolve) => {
            AegRsaSign.ohAegSignRSAWithPSSTextBase64(content, privateKey).then(async (sign: string) => {
                hilog.info(0, TAG, 'getSign success.');
                resolve(sign);
            }).catch((error: BusinessError) => {
                hilog.error(0, TAG, `getSign failed. code is ${error.code}, message is ${error.message}`);
                let msg: string | undefined =
                    context.getHostContext()?.resourceManager.getStringSync($r('app.string.gen_sign_failed').id);
                if (msg) {
                    context.getPromptAction().showToast({
                        message: msg
                    })
                }
            });
        })
    }
}