package com.test.hex.aroundapp.activity

import android.support.v7.app.AppCompatActivity
import android.os.Bundle
import android.view.View

import com.test.hex.aroundapp.R
import com.test.hex.aroundapp.log

class MainActivity : AppCompatActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        log(packageName, "MainActivity.onCreate()")

        findViewById<View>(R.id.btnSync).setOnClickListener {
            log(packageName, "MainActivity.onClick(btnSync)")
            if (checkWifiConnection()) {
                takeData()
            }
        }
        findViewById<View>(R.id.btnRecordVideo).setOnClickListener {
            log(packageName, "MainActivity.onClick(btnRecordVideo)")
            recordVideo()
        }
    }

    private fun recordVideo() {
        log(packageName, "MainActivity.recordVideo()")

    }

    private fun takeData() {
        log(packageName, "MainActivity.takeData()")

    }

    private fun checkWifiConnection(): Boolean {
        val result: Boolean

        result = Math.random() < 0.5

        log(packageName, "MainActivity.checkWifiConnection():$result")
        return result
    }
}
/////////////////////////////////////////
//utils.kt
package com.test.hex.aroundapp

import android.content.Context
import android.content.Context.MODE_APPEND
import android.os.Environment
import android.util.Log
import java.text.SimpleDateFormat
import java.util.*
import java.io.BufferedWriter
import java.io.OutputStreamWriter


private const val LOG_TAG = "Around"

private val sdf = SimpleDateFormat("[dd.MM.yyyy HH:mm:ss]", Locale.getDefault())

fun Context.log(vararg args: String) {
    val LOG_FILE_PATH = "${Environment.getExternalStorageDirectory()}/log.txt"

        val sb = StringBuilder(sdf.format(Date(System.currentTimeMillis())))
        for (arg in args) {
            sb.append(" {").append(arg).append("}")
        }
        sb.append(";")
        Log.d(LOG_TAG, sb.toString())

        BufferedWriter(OutputStreamWriter(
                openFileOutput(LOG_FILE_PATH, MODE_APPEND))).use {
                it.write(sb.append("\n").toString())
        }
}