const AccessToken = require("../src/AccessToken2").AccessToken2;
const ServiceChat = require("../src/AccessToken2").ServiceChat;

class ChatTokenBuilder {
    /**
     * Build the Chat user token.
     *
     * @param appId The App ID issued to you by Agora. Apply for a new App ID from
     * Agora Dashboard if it is missing from your kit. See Get an App ID.
     * @param appCertificate Certificate of the application that you registered in
     * the Agora Dashboard. See Get an App Certificate.
     * @param userUuid The user's id, must be unique.
     * @param expire represented by the number of seconds elapsed since now. If, for example, you want to access the
     * Agora Service within 10 minutes after the token is generated, set expireTimestamp as 600(seconds).
     * @return The chat user token.
     */
    static buildUserToken(appId, appCertificate, userUuid, expire) {
        const token = new AccessToken(appId, appCertificate, null, expire);
        const serviceChat = new ServiceChat(userUuid);
        serviceChat.add_privilege(ServiceChat.kPrivilegeUser, expire);
        token.add_service(serviceChat);
        return token.build();
    }

    /**
     * Build the Chat App token.
     *
     * @param appId The App ID issued to you by Agora. Apply for a new App ID from
     * Agora Dashboard if it is missing from your kit. See Get an App ID.
     * @param appCertificate Certificate of the application that you registered in
     * the Agora Dashboard. See Get an App Certificate.
     * @param expire represented by the number of seconds elapsed since now. If, for example, you want to access the
     * Agora Service within 10 minutes after the token is generated, set expireTimestamp as 600(seconds).
     * @return The chat App token.
     */
    static buildAppToken(appId, appCertificate, expire) {
    	const token = new AccessToken(appId, appCertificate, null, expire);
    	const serviceChat = new ServiceChat();
    	serviceChat.add_privilege(ServiceChat.kPrivilegeApp, expire);
    	token.add_service(serviceChat);
    	return token.build();
    }
}

exports.ChatTokenBuilder = ChatTokenBuilder;