EmailUtils.kt

object EmailUtils {    
    fun getEmailIntent(context: Context): Intent {
        val intent = Intent(Intent.ACTION_SENDTO, Uri.parse("mailto:"))
        val bodyText = getEmailBody(context)
        val emailAddy = EMAIL_SUPPORT
        val subject = context.resources.getString(R.string.email_subject)
        intent.putExtra(Intent.EXTRA_EMAIL, arrayOf(emailAddy))
        intent.putExtra(Intent.EXTRA_SUBJECT, subject)
        intent.putExtra(Intent.EXTRA_TEXT, bodyText)
        return intent
    }

    private fun getEmailBody(context: Context): String {
        val appName = getAppName(context)
        val appVesion = getAppVersion(context)
        val appPackageName = getAppPackageName(context)
        val device = getDevice()
        val osVersion = getOSVersion()

        var emailBody = ""

        if (appName.isNotEmpty()) {
            emailBody += "App Name: $appName\n"
        }

        if (appVesion.isNotEmpty()) {
            emailBody += "App Version: $appVesion\n"
        }

        if (!appPackageName.isNullOrEmpty()) {
            emailBody += "App ID: $appPackageName\n"
        }

        if (!device.isNullOrEmpty()) {
            emailBody += "Device: $device\n"
        }

        if (osVersion.isNotEmpty()) {
            emailBody += "OS Version: $osVersion\n"
        }

        return emailBody
    }

    private fun getAppName(context: Context): String {
        var appName = ""
        val packageName = context.packageName
        val pm = context.packageManager
        try {
            val pi = pm.getPackageInfo(packageName, 0)
            appName = context.resources.getString(pi.applicationInfo.labelRes)
        } catch (e: Exception) {
            Timber.e(e)
        }
        return appName
    }

    private fun getAppVersion(context: Context): String {
        var version = ""
        try {
            val pInfo = context.packageManager.getPackageInfo(context.packageName, 0)
            version = pInfo.versionName + " (" + pInfo.versionCode + ")"
        } catch (e: PackageManager.NameNotFoundException) {
            e.printStackTrace()
        }
        return version
    }

    private fun getAppPackageName(context: Context) = context.packageName

    private fun getDevice() = Build.DEVICE

    private fun getOSVersion(): String = Build.VERSION.SDK_INT.toString()
}