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package org.polkadot.example.rx;

import io.reactivex.Observable;
import org.polkadot.api.rx.ApiRx;
import org.polkadot.rpc.provider.ws.WsProvider;
import org.polkadot.types.Codec;
import org.polkadot.types.codec.CreateType;
import org.polkadot.types.codec.Vector;
import org.polkadot.types.type.Event;
import org.polkadot.types.type.EventRecord;

import java.util.List;

public class E08_SystemEvent {
    static String Alice = "5GrwvaEF5zXb26Fz9rcQpDWS57CtERHpNehXCPcNoHGKutQY";

    //static String endPoint = "wss://poc3-rpc.polkadot.io/";
    //static String endPoint = "wss://substrate-rpc.parity.io/";
    //static String endPoint = "ws://45.76.157.229:9944/";
    static String endPoint = "ws://127.0.0.1:9944";

    static void initEndPoint(String[] args) {
        if (args != null && args.length >= 1) {
            endPoint = args[0];
            System.out.println(" connect to endpoint [" + endPoint + "]");
        } else {
            System.out.println(" connect to default endpoint [" + endPoint + "]");
        }
    }

    public static void main(String[] args) throws InterruptedException {
        // Create an await for the API
        //Promise ready = ApiPromise.create();
        initEndPoint(args);

        WsProvider wsProvider = new WsProvider(endPoint);

        Observable apiRxObservable = ApiRx.create(wsProvider);

        apiRxObservable.flatMap((apiRx) -> {
            return apiRx.query().section("system").function("events").call();
        }).subscribe((events) -> {
            List list = (List) events;
            Vector eventRecords = ((Vector) list.get(0));
            System.out.println("events  " + eventRecords.size());

            // loop through the Vec
            for (EventRecord eventRecord : eventRecords) {
                EventRecord.Phase phase = eventRecord.getPhase();
                Event event = eventRecord.getEvent();

                List types = event.getTypeDef();

                // show what we are busy with
                System.out.println("\t" + event.getSection() + ":" + event.getMethod() + ":: (phase=" + phase.toString() + ")");
                System.out.println("\t\t" + event.getMeta().getDocumentation().toString());

                // loop through each of the parameters, displaying the type and data
                for (int index = 0; index < event.getData().size(); index++) {
                    Codec data = event.getData().get(index);
                    System.out.println("\t\t\t" + types.get(index).getType() + ": " + data.toString());
                }
            }
        });

    }
}