Bimba.git

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package ml.adamsprogs.bimba.departures

import android.content.Context
import android.content.Intent
import android.net.ConnectivityManager
import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import android.os.Handler
import android.os.Looper
import android.util.Log
import android.view.View
import androidx.appcompat.content.res.AppCompatResources
import androidx.core.content.res.ResourcesCompat
import androidx.core.view.WindowCompat
import androidx.recyclerview.widget.LinearLayoutManager
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.MainScope
import kotlinx.coroutines.Runnable
import kotlinx.coroutines.launch
import kotlinx.coroutines.withContext
import ml.adamsprogs.bimba.R
import ml.adamsprogs.bimba.api.*
import ml.adamsprogs.bimba.databinding.ActivityDeparturesBinding
import java.io.InputStream

class DeparturesActivity : AppCompatActivity() {
	private var _binding: ActivityDeparturesBinding? = null
	private val binding get() = _binding!!

	private lateinit var adapter: BimbaDeparturesAdapter

	private val handler = Handler(Looper.getMainLooper())
	private var runnable = Runnable {}

	override fun onCreate(savedInstanceState: Bundle?) {
		super.onCreate(savedInstanceState)
		_binding = ActivityDeparturesBinding.inflate(layoutInflater)
		setContentView(binding.root)

		binding.collapsingLayout.apply {
			title = getName()
			val tf = ResourcesCompat.getFont(this@DeparturesActivity, R.font.railway)
			setCollapsedTitleTypeface(tf)
			setExpandedTitleTypeface(tf)
		}

		binding.departuresRecycler.layoutManager = LinearLayoutManager(this)
		adapter = BimbaDeparturesAdapter(layoutInflater, this, listOf()) {
			ModalBottomSheet(it).apply {
				show(supportFragmentManager, ModalBottomSheet.TAG)
			}
		}
		binding.departuresRecycler.adapter = adapter
		WindowCompat.setDecorFitsSystemWindows(window, false)

		getDepartures()
	}

	private fun getName(): String {
		return when (intent?.action) {
			Intent.ACTION_VIEW -> getCode()
			null -> intent?.extras?.getString("name") ?: ""
			else -> ""
		}
	}

	private fun getCode(): String {
		@Suppress("SpellCheckingInspection")
		return when (intent?.action) {
			Intent.ACTION_VIEW -> intent?.data?.getQueryParameter("przystanek") ?: ""
			null -> intent?.extras?.getString("code") ?: ""
			else -> ""
		}
	}

	private fun getDepartures() {
		val cm = getSystemService(Context.CONNECTIVITY_SERVICE) as ConnectivityManager
		MainScope().launch {
			val departuresResult = getDepartures(
				cm,
				Server.get(this@DeparturesActivity), getCode()
			)
			val response = if (departuresResult.stream != null) {
				unmarshallDepartureResponse(departuresResult.stream)
			} else {
				null
			}
			if (departuresResult.error != null) {
				Log.e("Departures", "$departuresResult")
				Log.e("Departures", "$response")
				showError(departuresResult.error)
			} else {
				updateItems((response as DeparturesSuccess))
			}
		}
		handler.removeCallbacks(runnable)
		runnable = Runnable { getDepartures() }
		handler.postDelayed(runnable, 30 * 1000)
	}

	private suspend fun unmarshallDepartureResponse(stream: InputStream): DeparturesResponse {
		return withContext(Dispatchers.IO) {
			DeparturesResponse.unmarshal(stream)
		}
	}

	private fun showError(error: Error) {
		binding.departuresProgress.visibility = View.GONE
		binding.departuresRecycler.visibility = View.GONE
		binding.errorImage.visibility = View.VISIBLE
		binding.errorText.visibility = View.VISIBLE

		binding.errorText.text = getString(error.stringResource)
		binding.errorImage.setImageDrawable(AppCompatResources.getDrawable(this, error.imageResource))
	}

	private fun updateItems(response: DeparturesSuccess) {
		binding.departuresProgress.visibility = View.GONE
		adapter.update(response.departures)
		binding.collapsingLayout.apply {
			title = response.stop.name
		}
		if (response.departures.isEmpty()) {
			binding.errorImage.visibility = View.VISIBLE
			binding.errorText.visibility = View.VISIBLE
			binding.departuresRecycler.visibility = View.GONE

			binding.errorText.text = getString(R.string.no_departures)
			binding.errorImage.setImageDrawable(
				AppCompatResources.getDrawable(
					this,
					R.drawable.error_search
				)
			)
		} else {
			binding.departuresOverlay.visibility = View.GONE
			binding.errorImage.visibility = View.GONE
			binding.errorText.visibility = View.GONE
			binding.departuresRecycler.visibility = View.VISIBLE
		}
		// todo alerts
		// todo stop info
	}
}