Bimba.git

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// SPDX-FileCopyrightText: Adam Evyčędo
//
// SPDX-License-Identifier: GPL-3.0-or-later

package xyz.apiote.bimba.czwek.settings.feeds

import android.content.Intent
import android.os.Bundle
import android.util.Log
import android.view.View
import androidx.appcompat.app.AppCompatActivity
import androidx.appcompat.content.res.AppCompatResources
import androidx.core.content.edit
import androidx.lifecycle.ViewModelProvider
import androidx.recyclerview.widget.LinearLayoutManager
import androidx.transition.TransitionManager
import com.google.android.material.transition.MaterialFade
import kotlinx.coroutines.MainScope
import kotlinx.coroutines.launch
import xyz.apiote.bimba.czwek.R
import xyz.apiote.bimba.czwek.api.Server
import xyz.apiote.bimba.czwek.dashboard.MainActivity
import xyz.apiote.bimba.czwek.databinding.ActivityFeedChooserBinding
import xyz.apiote.bimba.czwek.repo.FeedInfo
import xyz.apiote.bimba.czwek.repo.OfflineRepository
import xyz.apiote.bimba.czwek.repo.OnlineRepository
import xyz.apiote.bimba.czwek.repo.TrafficResponseException
import xyz.apiote.bimba.czwek.repo.join

// TODO on internet connection -> getServer
// TODO swipe to refresh?

class FeedChooserActivity : AppCompatActivity() {
	private lateinit var viewModel: FeedsViewModel
	private var _binding: ActivityFeedChooserBinding? = null
	private val binding get() = _binding!!

	private lateinit var adapter: BimbaFeedInfoAdapter

	private val feeds: MutableMap<String, FeedInfo> = mutableMapOf()

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

		viewModel = ViewModelProvider(this)[FeedsViewModel::class.java]

		migrateFeedsSettings(this)
		viewModel.loadSettings(this)

		setUpRecycler()

		getServer()

		binding.button.setOnClickListener {
			moveOn()
		}
	}

	private fun showBottomSheet(feedID: String) {
		FeedBottomSheet(
			feedID,
			feeds,
			viewModel.settings.value ?: FeedsSettings(mutableMapOf())
		) { settings ->
			if (settings != null) {
				val fade = MaterialFade().apply {
					addTarget(R.id.feed_switch_container)
					duration = 500L
				}
				TransitionManager.beginDelayedTransition(binding.root, fade)
				viewModel.setSettings(feedID, settings)
				updateItems(null, viewModel.settings.value, false)
				adapter.notifyItemChanged(adapter.getItemPosition(feedID))
			}
		}.show(supportFragmentManager, FeedBottomSheet.TAG)
	}

	private fun setUpRecycler() {
		binding.resultsRecycler.layoutManager = LinearLayoutManager(this)
		adapter =
			BimbaFeedInfoAdapter(
				layoutInflater,
				feeds.map { it.value }.sortedBy { it.name },
				viewModel.settings.value!!,
				this,
				{
					showBottomSheet(it)
				},
				{ feedID, isEnabled -> viewModel.setEnabled(feedID, isEnabled) }
			)
		binding.resultsRecycler.adapter = adapter
	}

	private fun getServer() {
		binding.progress.visibility = View.VISIBLE
		binding.resultsRecycler.visibility = View.GONE

		MainScope().launch {
			val offlineRepository = OfflineRepository()
			val offlineFeeds =
				offlineRepository.getFeeds(this@FeedChooserActivity)
			if (!offlineFeeds.isNullOrEmpty()) {
				feeds.putAll(offlineFeeds)
				updateItems(offlineFeeds.map { it.value }, null)
			}
			try {
				val repository = OnlineRepository()
				val onlineFeeds =
					repository.getFeeds(this@FeedChooserActivity)
				feeds.clear()
				joinFeeds(offlineFeeds, onlineFeeds).let { joinedFeeds ->
					feeds.putAll(joinedFeeds)
					updateItems(joinedFeeds.map { it.value }, null)
				}
			} catch (e: TrafficResponseException) {
				if (offlineFeeds.isNullOrEmpty()) {
					showError(e.error.imageResource, e.error.stringResource)
				}
				Log.e("Feeds", "$e")
			}
		}
	}

	private fun moveOn() {
		viewModel.settings.value?.save(this, Server.get(this))
		val preferences = getSharedPreferences("shp", MODE_PRIVATE)
		preferences.edit(true) {
			putBoolean("inFeedsTransaction", false)
		}
		if (preferences.getBoolean("firstRun", true)) {
			val intent = Intent(this, MainActivity::class.java)
			startActivity(intent)
		}
		finish()
	}

	private fun showError(image: Int, text: Int) {
		binding.progress.visibility = View.GONE
		binding.resultsRecycler.visibility = View.GONE
		binding.errorImage.apply {
			visibility = View.VISIBLE
			setImageDrawable(AppCompatResources.getDrawable(this@FeedChooserActivity, image))
		}
		binding.errorText.apply {
			visibility = View.VISIBLE
			setText(text)
		}

	}

	private fun joinFeeds(
		feeds1: Map<String, FeedInfo>?,
		feeds2: Map<String, FeedInfo>?
	): Map<String, FeedInfo> {
		if (feeds1.isNullOrEmpty() && feeds2.isNullOrEmpty()) {
			return emptyMap()
		}

		if (feeds1.isNullOrEmpty()) {
			return feeds2!!
		}
		if (feeds2.isNullOrEmpty()) {
			return feeds1
		}

		return feeds1.keys.union(feeds2.keys).associateWith { feeds1[it].join(feeds2[it]) }
	}

	private fun updateItems(
		feeds: List<FeedInfo>?,
		feedsSettings: FeedsSettings?,
		notify: Boolean = true
	) {
		binding.feedsOverlay.visibility = View.GONE
		binding.resultsRecycler.visibility = View.VISIBLE
		binding.button.visibility = View.VISIBLE
		adapter.update(feeds, feedsSettings, notify)
		if (feeds?.isEmpty() == true) {
			showError(R.drawable.error_search, R.string.error_404)
		}
	}
}