FossifyGallery/app/src/main/java/com/simplemobiletools/gallery/Utils.kt

package com.simplemobiletools.gallery

import android.Manifest
import android.annotation.TargetApi
import android.app.Activity
import android.content.Context
import android.content.Intent
import android.content.pm.PackageManager
import android.content.res.Resources
import android.database.Cursor
import android.net.Uri
import android.os.Build
import android.provider.MediaStore
import android.support.v4.content.ContextCompat
import android.support.v4.provider.DocumentFile
import android.support.v7.app.ActionBar
import android.util.DisplayMetrics
import android.util.TypedValue
import android.view.*
import android.webkit.MimeTypeMap
import android.widget.Toast
import com.simplemobiletools.filepicker.extensions.getSDCardPath
import com.simplemobiletools.gallery.dialogs.WritePermissionDialog
import com.simplemobiletools.gallery.models.Medium
import java.io.File

class Utils {
    companion object {
        fun getFilename(path: String): String {
            return path.substring(path.lastIndexOf("/") + 1)
        }

        fun showToast(context: Context, resId: Int) {
            Toast.makeText(context, context.resources.getString(resId), Toast.LENGTH_SHORT).show()
        }

        fun getActionBarHeight(context: Context, res: Resources): Int {
            val tv = TypedValue()
            var height = 0
            if (context.theme.resolveAttribute(android.R.attr.actionBarSize, tv, true)) {
                height = TypedValue.complexToDimensionPixelSize(tv.data, res.displayMetrics)
            }
            return height
        }

        fun getStatusBarHeight(res: Resources): Int {
            val id = res.getIdentifier("status_bar_height", "dimen", "android")
            return if (id > 0) {
                res.getDimensionPixelSize(id)
            } else
                0
        }

        fun getNavBarHeight(res: Resources): Int {
            val id = res.getIdentifier("navigation_bar_height", "dimen", "android")
            return if (id > 0) {
                res.getDimensionPixelSize(id)
            } else
                0
        }

        fun hasNavBar(act: Activity): Boolean {
            return if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
                val display = act.windowManager.defaultDisplay

                val realDisplayMetrics = DisplayMetrics()
                display.getRealMetrics(realDisplayMetrics)

                val realHeight = realDisplayMetrics.heightPixels
                val realWidth = realDisplayMetrics.widthPixels

                val displayMetrics = DisplayMetrics()
                display.getMetrics(displayMetrics)

                val displayHeight = displayMetrics.heightPixels
                val displayWidth = displayMetrics.widthPixels

                realWidth - displayWidth > 0 || realHeight - displayHeight > 0
            } else {
                val hasMenuKey = ViewConfiguration.get(act).hasPermanentMenuKey()
                val hasBackKey = KeyCharacterMap.deviceHasKey(KeyEvent.KEYCODE_BACK)
                !hasMenuKey && !hasBackKey
            }
        }

        fun hasStoragePermission(cxt: Context): Boolean {
            return ContextCompat.checkSelfPermission(cxt, Manifest.permission.WRITE_EXTERNAL_STORAGE) == PackageManager.PERMISSION_GRANTED
        }

        fun getMimeType(url: String): String {
            val extension = MimeTypeMap.getFileExtensionFromUrl(url)
            return if (extension != null) {
                MimeTypeMap.getSingleton().getMimeTypeFromExtension(extension)
            } else
                ""
        }

        fun shareMedium(medium: Medium, activity: Activity) {
            val shareTitle = activity.resources.getString(R.string.share_via)
            val intent = Intent()
            val file = File(medium.path)
            val uri = Uri.fromFile(file)
            intent.action = Intent.ACTION_SEND
            intent.putExtra(Intent.EXTRA_STREAM, uri)
            intent.type = getMimeType(medium)
            activity.startActivity(Intent.createChooser(intent, shareTitle))
        }

        fun getMimeType(medium: Medium) = if (medium.isVideo) "video/*" else "image/*"

        fun showSystemUI(actionbar: ActionBar?, window: Window) {
            actionbar?.show()

            window.decorView.systemUiVisibility = View.SYSTEM_UI_FLAG_LAYOUT_STABLE or
                    View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION or
                    View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
        }

        fun hideSystemUI(actionbar: ActionBar?, window: Window) {
            actionbar?.hide()

            window.decorView.systemUiVisibility = View.SYSTEM_UI_FLAG_LAYOUT_STABLE or
                    View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION or
                    View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN or
                    View.SYSTEM_UI_FLAG_LOW_PROFILE or
                    View.SYSTEM_UI_FLAG_FULLSCREEN or
                    View.SYSTEM_UI_FLAG_IMMERSIVE
        }

        fun getRealPathFromURI(context: Context, uri: Uri): String? {
            var cursor: Cursor? = null
            try {
                val projection = arrayOf(MediaStore.Images.Media.DATA)
                cursor = context.contentResolver.query(uri, projection, null, null, null)
                val index = cursor!!.getColumnIndexOrThrow(MediaStore.Images.Media.DATA)
                cursor.moveToFirst()
                return cursor.getString(index)
            } finally {
                cursor?.close()
            }
        }

        fun needsStupidWritePermissions(context: Context, path: String) = isPathOnSD(context, path) && isKitkat()

        fun isPathOnSD(context: Context, path: String): Boolean {
            return path.startsWith(context.getSDCardPath())
        }

        fun isKitkat() = Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.KITKAT

        fun getFileDocument(context: Context, path: String): DocumentFile {
            val relativePath = path.substring(context.getSDCardPath().length + 1)
            var document = DocumentFile.fromTreeUri(context, Uri.parse(Config.newInstance(context).treeUri))
            val parts = relativePath.split("/")
            for (part in parts) {
                val currDocument = document.findFile(part)
                if (currDocument != null)
                    document = currDocument
            }
            return document
        }

        @TargetApi(Build.VERSION_CODES.KITKAT)
        fun saveTreeUri(context: Context, resultData: Intent) {
            val treeUri = resultData.data
            Config.newInstance(context).treeUri = treeUri.toString()

            val takeFlags = Intent.FLAG_GRANT_READ_URI_PERMISSION or Intent.FLAG_GRANT_WRITE_URI_PERMISSION
            context.contentResolver.takePersistableUriPermission(treeUri, takeFlags)
        }

        fun isShowingWritePermissions(activity: Activity, file: File): Boolean {
            return if (needsStupidWritePermissions(activity, file.absolutePath) && !file.canWrite() && Config.newInstance(activity).treeUri.isEmpty()) {
                WritePermissionDialog(activity, object : WritePermissionDialog.OnWritePermissionListener {
                    override fun onConfirmed() {
                        val intent = Intent(Intent.ACTION_OPEN_DOCUMENT_TREE)
                        activity.startActivityForResult(intent, Constants.OPEN_DOCUMENT_TREE)
                    }
                })
                true
            } else {
                false
            }
        }
    }
}