package com.notifyhub.viewer.ui

import android.os.Bundle
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import androidx.fragment.app.Fragment
import androidx.lifecycle.lifecycleScope
import androidx.recyclerview.widget.LinearLayoutManager
import com.notifyhub.viewer.NotizViewerApp
import com.notifyhub.viewer.R
import com.notifyhub.viewer.data.remote.MessageRow
import com.notifyhub.viewer.databinding.FragmentMessagesBinding
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.launch
import kotlinx.coroutines.withContext

class MessagesFragment : Fragment(), HomeActivity.Refreshable {
    private var _binding: FragmentMessagesBinding? = null
    private val binding get() = _binding!!
    private val app get() = (requireActivity().application as NotizViewerApp)
    private val items = mutableListOf<MessageRow>()
    private lateinit var adapter: MessageAdapter

    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View {
        _binding = FragmentMessagesBinding.inflate(inflater, container, false)
        adapter = MessageAdapter(items) { row -> openDetail(row.id) }
        binding.messagesList.layoutManager = LinearLayoutManager(requireContext())
        binding.messagesList.adapter = adapter
        binding.swipeRefresh.setOnRefreshListener { refresh() }
        return binding.root
    }

    override fun onDestroyView() {
        super.onDestroyView()
        _binding = null
    }

    override fun refresh() = load()

    override fun onResume() {
        super.onResume()
        if (items.isEmpty()) load()
    }

    private fun load() {
        lifecycleScope.launch {
            try {
                val response = withContext(Dispatchers.IO) { app.api.messages(page = 1, perPage = 50) }
                items.clear()
                response.body()?.data?.let { items.addAll(it) }
                adapter.notifyDataSetChanged()
                binding.emptyText.visibility = if (items.isEmpty()) View.VISIBLE else View.GONE
                binding.emptyText.text = getString(R.string.no_messages)
            } catch (e: Exception) {
                binding.emptyText.text = e.message ?: getString(R.string.no_messages)
                binding.emptyText.visibility = View.VISIBLE
            } finally {
                binding.swipeRefresh.isRefreshing = false
            }
        }
    }

    private fun openDetail(id: Int) {
        startActivity(android.content.Intent(requireContext(), MessageDetailActivity::class.java).apply {
            putExtra(MessageDetailActivity.EXTRA_ID, id)
        })
    }
}