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 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) {
				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)
		}
	}
}