package com.unity3d.player;

import android.app.Activity;
import android.util.Log;

import java.lang.reflect.Constructor;
import java.lang.reflect.Field;

public class ChannelAdapterBase implements SDKManager.IChannelSDKAdapter {
    private static final String TAG = "ChannelAdapterBase";
    protected Activity activity;
    protected String channel = "GooglePlay";

    final ChannelAdapterBase setup(Activity activity, String channel) {
        this.activity = activity;
        this.channel = channel;
        return this;
    }

    @Override
    public final SDKManager.IChannelSDKAdapter loadConfig() {
        applyConfig();
        return this;
    }

    protected void applyConfig() {
        applyConfigObject(createConfig());
    }

    @Override
    public String getChannel() {
        return channel;
    }

    @Override
    public void init() {
        SDKManager.initDefault(activity);
    }

    protected void applyConfigObject(Object source) {
        if (source == null) {
            return;
        }

        for (Field sourceField : source.getClass().getDeclaredFields()) {
            sourceField.setAccessible(true);
            try {
                Object value = sourceField.get(source);
                if (value == null) {
                    continue;
                }

                Field targetField = ConfigManager.class.getDeclaredField(sourceField.getName());
                targetField.setAccessible(true);
                targetField.set(null, value);
                Log.i(TAG, "apply config: " + sourceField.getName() + "=" + value);
            } catch (NoSuchFieldException ignored) {
                try {
                    Object value = sourceField.get(source);
                    Log.w(TAG, "ignore extra config: " + sourceField.getName() + "=" + value);
                } catch (Exception e) {
                    Log.w(TAG, "ignore extra config: " + sourceField.getName());
                }
            } catch (Exception e) {
                Log.e(TAG, "apply config failed: " + sourceField.getName(), e);
            }
        }
    }

    private Object createConfig() {
        try {
            Class<?> configClass = Class.forName(this.getClass().getName() + "$Config");
            Constructor<?> constructor = configClass.getDeclaredConstructor();
            constructor.setAccessible(true);
            return constructor.newInstance();
        } catch (ClassNotFoundException ignored) {
            return null;
        } catch (Exception e) {
            Log.e(TAG, "create config failed: " + this.getClass().getName(), e);
            return null;
        }
    }
}