package com.mapbox.mapboxsdk.testapp.activity.offline

import android.os.Bundle
import android.support.v7.app.AppCompatActivity
import android.widget.Toast
import com.mapbox.mapboxsdk.Mapbox
import com.mapbox.mapboxsdk.camera.CameraUpdateFactory
import com.mapbox.mapboxsdk.constants.Style
import com.mapbox.mapboxsdk.geometry.LatLng
import com.mapbox.mapboxsdk.log.Logger
import com.mapbox.mapboxsdk.offline.OfflineManager
import com.mapbox.mapboxsdk.offline.OfflineRegion
import com.mapbox.mapboxsdk.storage.FileSource
import com.mapbox.mapboxsdk.testapp.R
import com.mapbox.mapboxsdk.testapp.utils.FileUtils
import kotlinx.android.synthetic.main.activity_merge_offline_regions.*

class MergeOfflineRegionsActivity : AppCompatActivity() {
  companion object {
    private const val LOG_TAG = "Mbgl-MergeOfflineRegionsActivity"
    private const val TEST_DB_FILE_NAME = "poznan.db"
    private const val TEST_STYLE = Style.MAPBOX_STREETS
  }

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

    // forcing offline state
//    Mapbox.setConnected(false)

//    mapView.setStyleUrl(TEST_STYLE)

    mapView.onCreate(savedInstanceState)
    load_region_btn.setOnClickListener {
      copyAsset()
    }
    mapView.getMapAsync {
      it.moveCamera(CameraUpdateFactory.newLatLngZoom(LatLng(52.402711, 16.930856), 10.0))
      it.isDebugActive = true
    }
  }

  private fun copyAsset() {
    // copy db asset to internal memory
    FileUtils.CopyFileFromAssetsTask(this, object : FileUtils.OnFileCopiedFromAssetsListener {
      override fun onFileCopiedFromAssets() {
        mergeDb()
      }

      override fun onError() {
        Toast.makeText(
          this@MergeOfflineRegionsActivity,
          String.format("Error copying DB file."),
          Toast.LENGTH_LONG).show()
      }
    }).execute(TEST_DB_FILE_NAME, FileSource.getResourcesCachePath(this))
  }

  private fun mergeDb() {
    OfflineManager.getInstance(this).mergeOfflineRegions(
      FileSource.getResourcesCachePath(this) + "/" + TEST_DB_FILE_NAME,
      object : OfflineManager.MergeOfflineRegionsCallback {
        override fun onMerge(offlineRegions: Array<OfflineRegion>) {
          mapView.setStyleUrl(TEST_STYLE)
          Toast.makeText(
            this@MergeOfflineRegionsActivity,
            String.format("Merged %d regions.", offlineRegions.size),
            Toast.LENGTH_LONG).show()
        }

        override fun onError(error: String) {
          Toast.makeText(
            this@MergeOfflineRegionsActivity,
            String.format("Offline DB merge error."),
            Toast.LENGTH_LONG).show()
          Logger.e(LOG_TAG, error)
        }
      })
  }

  override fun onStart() {
    super.onStart()
    mapView.onStart()
  }

  override fun onResume() {
    super.onResume()
    mapView.onResume()
  }

  override fun onPause() {
    super.onPause()
    mapView.onPause()
  }

  override fun onStop() {
    super.onStop()
    mapView.onStop()
  }

  override fun onLowMemory() {
    super.onLowMemory()
    mapView.onLowMemory()
  }

  override fun onDestroy() {
    super.onDestroy()
    mapView.onDestroy()

    // restoring connectivity state
//    Mapbox.setConnected(null)
  }

  override fun onSaveInstanceState(outState: Bundle) {
    super.onSaveInstanceState(outState)
    mapView.onSaveInstanceState(outState)
  }
}