import { registerPlugin } from '@capacitor/core'

interface EchoPlugin {
  echo(options: { value: string }): Promise<{ value: string }>
}

export const Echo = registerPlugin<EchoPlugin>('Echo')

import { ref } from 'vue'
import { Echo } from '@/plugins'

const test = ref("yet")
Echo.echo({value: "native hello"}).then((ret) => {
  test.value = ret.value
  console.log("Done")
})

import com.getcapacitor.JSObject;
import com.getcapacitor.Plugin;
import com.getcapacitor.PluginCall;
import com.getcapacitor.PluginMethod;
import com.getcapacitor.annotation.CapacitorPlugin;

@CapacitorPlugin(name = "Echo")
public class Echo extends Plugin {

    @PluginMethod
    public void echo(PluginCall call) {
        String value = call.getString("value");

        JSObject ret = new JSObject();
        ret.put("value", value + " from android");
        call.resolve(ret);
    }
}

import android.os.Bundle;
import com.getcapacitor.BridgeActivity;

public class MainActivity extends BridgeActivity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        this.registerPlugin(Echo.class); // 先に登録
        // ドキュメントだとここの上下が逆で動かなくてブチ切れたので注意
        super.onCreate(savedInstanceState);
    }
}