/*
 * Copyright 2016 Elvis Hew
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.elvishew.xlog.internal;

import android.annotation.SuppressLint;
import android.os.Build;

import com.elvishew.xlog.printer.AndroidPrinter;
import com.elvishew.xlog.printer.ConsolePrinter;
import com.elvishew.xlog.printer.Printer;

public class Platform {

    private static final Platform PLATFORM = findPlatform();

    public static Platform get() {
        return PLATFORM;
    }

    @SuppressLint("NewApi")
    String lineSeparator() {
        return System.lineSeparator();
    }

    Printer defaultPrinter() {
        return new ConsolePrinter();
    }

    public void warn(String msg) {
        System.out.println(msg);
    }

    private static Platform findPlatform() {
        try {
            Class.forName("android.os.Build");
            if (Build.VERSION.SDK_INT != 0) {
                return new Android();
            }
        } catch (ClassNotFoundException ignored) {
        }
        return new Platform();
    }

    static class Android extends Platform {
        @Override
        String lineSeparator() {
            if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT) {
                return "\n";
            }
            return System.lineSeparator();
        }

        @Override
        Printer defaultPrinter() {
            return new AndroidPrinter();
        }

        @Override
        public void warn(String msg) {
            android.util.Log.w("XLog", msg);
        }
    }
}
